./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 TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/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 TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 13:58:50,701 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 13:58:50,704 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 13:58:50,733 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 13:58:50,734 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 13:58:50,737 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 13:58:50,739 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 13:58:50,742 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 13:58:50,744 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 13:58:50,748 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 13:58:50,749 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 13:58:50,752 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 13:58:50,752 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 13:58:50,754 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 13:58:50,755 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 13:58:50,759 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 13:58:50,760 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 13:58:50,761 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 13:58:50,762 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 13:58:50,766 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 13:58:50,770 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 13:58:50,776 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 13:58:50,777 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 13:58:50,778 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 13:58:50,785 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 13:58:50,787 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 13:58:50,787 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 13:58:50,788 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 13:58:50,789 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 13:58:50,790 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 13:58:50,790 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 13:58:50,792 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 13:58:50,793 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 13:58:50,794 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 13:58:50,795 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 13:58:50,795 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 13:58:50,796 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 13:58:50,796 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 13:58:50,796 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 13:58:50,797 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 13:58:50,797 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 13:58:50,799 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 13:58:50,833 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 13:58:50,833 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 13:58:50,834 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 13:58:50,834 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 13:58:50,835 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 13:58:50,835 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 13:58:50,836 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 13:58:50,836 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 13:58:50,836 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 13:58:50,836 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 13:58:50,837 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 13:58:50,837 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 13:58:50,838 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 13:58:50,838 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 13:58:50,838 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 13:58:50,838 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 13:58:50,838 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 13:58:50,839 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 13:58:50,839 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 13:58:50,839 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 13:58:50,839 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 13:58:50,839 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 13:58:50,839 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 13:58:50,840 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 13:58:50,840 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 13:58:50,840 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 13:58:50,840 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 13:58:50,841 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 13:58:50,841 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 13:58:50,841 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 13:58:50,841 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 13:58:50,841 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 13:58:50,842 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 13:58:50,842 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 13:58:50,842 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 13:58:50,842 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 13:58:50,842 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 13:58:50,843 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6aeaf730cbe4eb831d189bfd9925d1660c7714b9e685f389bc2495c0943d6472 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 13:58:51,122 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 13:58:51,139 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 13:58:51,141 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 13:58:51,143 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 13:58:51,143 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 13:58:51,144 INFO L432 ainManager$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 13:58:52,223 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 13:58:52,512 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 13:58:52,514 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 13:58:52,532 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56c7a3668/7e386860d693433f8ddb5e63d5235337/FLAG6bbe2711c [2023-08-30 13:58:52,546 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56c7a3668/7e386860d693433f8ddb5e63d5235337 [2023-08-30 13:58:52,548 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 13:58:52,549 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 13:58:52,550 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 13:58:52,550 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 13:58:52,553 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 13:58:52,553 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 01:58:52" (1/1) ... [2023-08-30 13:58:52,554 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@645520a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:58:52, skipping insertion in model container [2023-08-30 13:58:52,555 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 01:58:52" (1/1) ... [2023-08-30 13:58:52,560 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 13:58:52,596 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 13:58:52,715 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 13:58:52,829 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 13:58:52,839 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 13:58:52,849 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 13:58:52,876 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 13:58:52,905 INFO L208 MainTranslator]: Completed translation [2023-08-30 13:58:52,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:58:52 WrapperNode [2023-08-30 13:58:52,906 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 13:58:52,907 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 13:58:52,907 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 13:58:52,907 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 13:58:52,913 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:58:52" (1/1) ... [2023-08-30 13:58:52,926 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:58:52" (1/1) ... [2023-08-30 13:58:52,946 INFO L138 Inliner]: procedures = 165, calls = 35, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 124 [2023-08-30 13:58:52,947 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 13:58:52,948 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 13:58:52,948 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 13:58:52,948 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 13:58:52,955 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:58:52" (1/1) ... [2023-08-30 13:58:52,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:58:52" (1/1) ... [2023-08-30 13:58:52,959 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:58:52" (1/1) ... [2023-08-30 13:58:52,959 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:58:52" (1/1) ... [2023-08-30 13:58:52,965 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:58:52" (1/1) ... [2023-08-30 13:58:52,969 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:58:52" (1/1) ... [2023-08-30 13:58:52,970 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:58:52" (1/1) ... [2023-08-30 13:58:52,972 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:58:52" (1/1) ... [2023-08-30 13:58:52,974 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 13:58:52,975 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 13:58:52,975 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 13:58:52,975 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 13:58:52,976 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:58:52" (1/1) ... [2023-08-30 13:58:52,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 13:58:52,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:58:53,006 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 13:58:53,039 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 13:58:53,051 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 13:58:53,052 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2023-08-30 13:58:53,053 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2023-08-30 13:58:53,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 13:58:53,053 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 13:58:53,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 13:58:53,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 13:58:53,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 13:58:53,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 13:58:53,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 13:58:53,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 13:58:53,055 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 13:58:53,193 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 13:58:53,195 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 13:58:53,416 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 13:58:53,425 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 13:58:53,425 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-30 13:58:53,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 01:58:53 BoogieIcfgContainer [2023-08-30 13:58:53,427 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 13:58:53,429 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 13:58:53,432 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 13:58:53,436 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 13:58:53,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 01:58:52" (1/3) ... [2023-08-30 13:58:53,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@518d6c44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 01:58:53, skipping insertion in model container [2023-08-30 13:58:53,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:58:52" (2/3) ... [2023-08-30 13:58:53,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@518d6c44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 01:58:53, skipping insertion in model container [2023-08-30 13:58:53,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 01:58:53" (3/3) ... [2023-08-30 13:58:53,439 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2023-08-30 13:58:53,445 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 13:58:53,454 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 13:58:53,454 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-08-30 13:58:53,454 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 13:58:53,565 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 13:58:53,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 132 places, 138 transitions, 281 flow [2023-08-30 13:58:53,704 INFO L130 PetriNetUnfolder]: 10/137 cut-off events. [2023-08-30 13:58:53,704 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 13:58:53,710 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 13:58:53,711 INFO L82 GeneralOperation]: Start removeDead. Operand has 132 places, 138 transitions, 281 flow [2023-08-30 13:58:53,720 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 131 places, 137 transitions, 277 flow [2023-08-30 13:58:53,725 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 13:58:53,745 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 131 places, 137 transitions, 277 flow [2023-08-30 13:58:53,751 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 131 places, 137 transitions, 277 flow [2023-08-30 13:58:53,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 131 places, 137 transitions, 277 flow [2023-08-30 13:58:53,798 INFO L130 PetriNetUnfolder]: 10/137 cut-off events. [2023-08-30 13:58:53,798 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 13:58:53,801 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 13:58:53,805 INFO L119 LiptonReduction]: Number of co-enabled transitions 4988 [2023-08-30 13:58:57,714 INFO L134 LiptonReduction]: Checked pairs total: 7411 [2023-08-30 13:58:57,714 INFO L136 LiptonReduction]: Total number of compositions: 133 [2023-08-30 13:58:57,728 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 13:58:57,733 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;@150984d1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 13:58:57,734 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-08-30 13:58:57,739 INFO L130 PetriNetUnfolder]: 4/21 cut-off events. [2023-08-30 13:58:57,739 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 13:58:57,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:58:57,740 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 13:58:57,740 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 13:58:57,745 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:58:57,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1151992810, now seen corresponding path program 1 times [2023-08-30 13:58:57,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:58:57,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720892894] [2023-08-30 13:58:57,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:58:57,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:58:57,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:58:58,075 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 13:58:58,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:58:58,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720892894] [2023-08-30 13:58:58,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720892894] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:58:58,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:58:58,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 13:58:58,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920793671] [2023-08-30 13:58:58,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:58:58,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 13:58:58,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:58:58,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 13:58:58,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 13:58:58,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 271 [2023-08-30 13:58:58,166 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 13:58:58,166 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:58:58,166 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 271 [2023-08-30 13:58:58,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:58:58,314 INFO L130 PetriNetUnfolder]: 218/399 cut-off events. [2023-08-30 13:58:58,314 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 13:58:58,317 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 13:58:58,321 INFO L137 encePairwiseOnDemand]: 264/271 looper letters, 40 selfloop transitions, 4 changer transitions 0/46 dead transitions. [2023-08-30 13:58:58,322 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 46 transitions, 183 flow [2023-08-30 13:58:58,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 13:58:58,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 13:58:58,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 421 transitions. [2023-08-30 13:58:58,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5178351783517835 [2023-08-30 13:58:58,342 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 421 transitions. [2023-08-30 13:58:58,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 421 transitions. [2023-08-30 13:58:58,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:58:58,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 421 transitions. [2023-08-30 13:58:58,354 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 13:58:58,359 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 13:58:58,360 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 13:58:58,362 INFO L175 Difference]: Start difference. First operand has 30 places, 32 transitions, 67 flow. Second operand 3 states and 421 transitions. [2023-08-30 13:58:58,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 46 transitions, 183 flow [2023-08-30 13:58:58,365 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 13:58:58,368 INFO L231 Difference]: Finished difference. Result has 32 places, 33 transitions, 92 flow [2023-08-30 13:58:58,370 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 13:58:58,375 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 2 predicate places. [2023-08-30 13:58:58,375 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 33 transitions, 92 flow [2023-08-30 13:58:58,375 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 13:58:58,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:58:58,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 13:58:58,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 13:58:58,376 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 13:58:58,385 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:58:58,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1151992811, now seen corresponding path program 1 times [2023-08-30 13:58:58,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:58:58,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354868243] [2023-08-30 13:58:58,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:58:58,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:58:58,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:58:58,687 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 13:58:58,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:58:58,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354868243] [2023-08-30 13:58:58,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354868243] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:58:58,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:58:58,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 13:58:58,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25266582] [2023-08-30 13:58:58,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:58:58,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 13:58:58,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:58:58,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 13:58:58,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 13:58:58,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 271 [2023-08-30 13:58:58,764 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 13:58:58,765 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:58:58,765 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 271 [2023-08-30 13:58:58,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:58:58,909 INFO L130 PetriNetUnfolder]: 295/549 cut-off events. [2023-08-30 13:58:58,910 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2023-08-30 13:58:58,911 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 13:58:58,913 INFO L137 encePairwiseOnDemand]: 265/271 looper letters, 56 selfloop transitions, 6 changer transitions 0/64 dead transitions. [2023-08-30 13:58:58,913 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 64 transitions, 294 flow [2023-08-30 13:58:58,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 13:58:58,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 13:58:58,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 548 transitions. [2023-08-30 13:58:58,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5055350553505535 [2023-08-30 13:58:58,916 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 548 transitions. [2023-08-30 13:58:58,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 548 transitions. [2023-08-30 13:58:58,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:58:58,917 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 548 transitions. [2023-08-30 13:58:58,918 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 13:58:58,920 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 13:58:58,921 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 13:58:58,921 INFO L175 Difference]: Start difference. First operand has 32 places, 33 transitions, 92 flow. Second operand 4 states and 548 transitions. [2023-08-30 13:58:58,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 64 transitions, 294 flow [2023-08-30 13:58:58,923 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 13:58:58,924 INFO L231 Difference]: Finished difference. Result has 35 places, 38 transitions, 133 flow [2023-08-30 13:58:58,925 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 13:58:58,925 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2023-08-30 13:58:58,925 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 38 transitions, 133 flow [2023-08-30 13:58:58,926 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 13:58:58,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:58:58,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 13:58:58,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 13:58:58,927 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 13:58:58,934 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:58:58,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1614499698, now seen corresponding path program 1 times [2023-08-30 13:58:58,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:58:58,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613193234] [2023-08-30 13:58:58,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:58:58,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:58:58,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:58:59,010 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 13:58:59,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:58:59,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613193234] [2023-08-30 13:58:59,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613193234] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:58:59,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:58:59,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 13:58:59,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045175908] [2023-08-30 13:58:59,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:58:59,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 13:58:59,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:58:59,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 13:58:59,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 13:58:59,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 271 [2023-08-30 13:58:59,044 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 13:58:59,045 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:58:59,045 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 271 [2023-08-30 13:58:59,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:58:59,157 INFO L130 PetriNetUnfolder]: 312/586 cut-off events. [2023-08-30 13:58:59,158 INFO L131 PetriNetUnfolder]: For 184/184 co-relation queries the response was YES. [2023-08-30 13:58:59,159 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 13:58:59,161 INFO L137 encePairwiseOnDemand]: 264/271 looper letters, 48 selfloop transitions, 11 changer transitions 0/61 dead transitions. [2023-08-30 13:58:59,161 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 61 transitions, 334 flow [2023-08-30 13:58:59,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 13:58:59,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 13:58:59,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 417 transitions. [2023-08-30 13:58:59,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5129151291512916 [2023-08-30 13:58:59,163 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 417 transitions. [2023-08-30 13:58:59,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 417 transitions. [2023-08-30 13:58:59,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:58:59,164 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 417 transitions. [2023-08-30 13:58:59,165 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 13:58:59,166 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 13:58:59,167 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 13:58:59,167 INFO L175 Difference]: Start difference. First operand has 35 places, 38 transitions, 133 flow. Second operand 3 states and 417 transitions. [2023-08-30 13:58:59,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 61 transitions, 334 flow [2023-08-30 13:58:59,168 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 13:58:59,169 INFO L231 Difference]: Finished difference. Result has 39 places, 45 transitions, 226 flow [2023-08-30 13:58:59,169 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 13:58:59,170 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 9 predicate places. [2023-08-30 13:58:59,170 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 45 transitions, 226 flow [2023-08-30 13:58:59,170 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 13:58:59,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:58:59,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 13:58:59,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 13:58:59,171 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 13:58:59,171 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:58:59,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1614499699, now seen corresponding path program 1 times [2023-08-30 13:58:59,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:58:59,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162941434] [2023-08-30 13:58:59,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:58:59,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:58:59,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:58:59,314 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 13:58:59,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:58:59,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162941434] [2023-08-30 13:58:59,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162941434] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:58:59,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:58:59,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 13:58:59,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669658250] [2023-08-30 13:58:59,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:58:59,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 13:58:59,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:58:59,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 13:58:59,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 13:58:59,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 271 [2023-08-30 13:58:59,391 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 13:58:59,391 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:58:59,391 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 271 [2023-08-30 13:58:59,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:58:59,543 INFO L130 PetriNetUnfolder]: 296/558 cut-off events. [2023-08-30 13:58:59,543 INFO L131 PetriNetUnfolder]: For 472/472 co-relation queries the response was YES. [2023-08-30 13:58:59,544 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 13:58:59,547 INFO L137 encePairwiseOnDemand]: 266/271 looper letters, 57 selfloop transitions, 7 changer transitions 3/69 dead transitions. [2023-08-30 13:58:59,547 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 69 transitions, 413 flow [2023-08-30 13:58:59,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 13:58:59,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 13:58:59,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 668 transitions. [2023-08-30 13:58:59,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4929889298892989 [2023-08-30 13:58:59,550 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 668 transitions. [2023-08-30 13:58:59,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 668 transitions. [2023-08-30 13:58:59,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:58:59,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 668 transitions. [2023-08-30 13:58:59,552 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 13:58:59,554 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 13:58:59,555 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 13:58:59,555 INFO L175 Difference]: Start difference. First operand has 39 places, 45 transitions, 226 flow. Second operand 5 states and 668 transitions. [2023-08-30 13:58:59,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 69 transitions, 413 flow [2023-08-30 13:58:59,558 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 13:58:59,559 INFO L231 Difference]: Finished difference. Result has 44 places, 46 transitions, 226 flow [2023-08-30 13:58:59,559 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 13:58:59,560 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 14 predicate places. [2023-08-30 13:58:59,560 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 46 transitions, 226 flow [2023-08-30 13:58:59,561 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 13:58:59,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:58:59,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 13:58:59,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 13:58:59,561 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 13:58:59,562 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:58:59,562 INFO L85 PathProgramCache]: Analyzing trace with hash 2065148656, now seen corresponding path program 1 times [2023-08-30 13:58:59,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:58:59,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570438409] [2023-08-30 13:58:59,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:58:59,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:58:59,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:58:59,599 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 13:58:59,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:58:59,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570438409] [2023-08-30 13:58:59,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570438409] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:58:59,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:58:59,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 13:58:59,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921767116] [2023-08-30 13:58:59,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:58:59,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 13:58:59,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:58:59,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 13:58:59,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 13:58:59,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 271 [2023-08-30 13:58:59,612 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 13:58:59,612 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:58:59,613 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 271 [2023-08-30 13:58:59,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:58:59,762 INFO L130 PetriNetUnfolder]: 343/640 cut-off events. [2023-08-30 13:58:59,762 INFO L131 PetriNetUnfolder]: For 497/497 co-relation queries the response was YES. [2023-08-30 13:58:59,763 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 13:58:59,765 INFO L137 encePairwiseOnDemand]: 266/271 looper letters, 69 selfloop transitions, 3 changer transitions 1/74 dead transitions. [2023-08-30 13:58:59,766 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 74 transitions, 478 flow [2023-08-30 13:58:59,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 13:58:59,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 13:58:59,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 546 transitions. [2023-08-30 13:58:59,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.503690036900369 [2023-08-30 13:58:59,768 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 546 transitions. [2023-08-30 13:58:59,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 546 transitions. [2023-08-30 13:58:59,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:58:59,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 546 transitions. [2023-08-30 13:58:59,769 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 13:58:59,771 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 13:58:59,772 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 13:58:59,772 INFO L175 Difference]: Start difference. First operand has 44 places, 46 transitions, 226 flow. Second operand 4 states and 546 transitions. [2023-08-30 13:58:59,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 74 transitions, 478 flow [2023-08-30 13:58:59,775 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 13:58:59,777 INFO L231 Difference]: Finished difference. Result has 49 places, 48 transitions, 244 flow [2023-08-30 13:58:59,777 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 13:58:59,779 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 19 predicate places. [2023-08-30 13:58:59,779 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 48 transitions, 244 flow [2023-08-30 13:58:59,780 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 13:58:59,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:58:59,780 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 13:58:59,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 13:58:59,780 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 13:58:59,780 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:58:59,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1739948279, now seen corresponding path program 1 times [2023-08-30 13:58:59,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:58:59,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865500719] [2023-08-30 13:58:59,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:58:59,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:58:59,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:58:59,950 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 13:58:59,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:58:59,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865500719] [2023-08-30 13:58:59,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865500719] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 13:58:59,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910485656] [2023-08-30 13:58:59,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:58:59,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:58:59,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:58:59,958 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 13:58:59,982 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 13:59:00,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:59:00,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-30 13:59:00,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:59:00,290 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 13:59:00,371 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 13:59:00,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 13:59:00,436 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 13:59:00,458 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 13:59:00,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [910485656] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 13:59:00,458 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 13:59:00,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 11 [2023-08-30 13:59:00,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556002712] [2023-08-30 13:59:00,458 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 13:59:00,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 13:59:00,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:59:00,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 13:59:00,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-08-30 13:59:00,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 271 [2023-08-30 13:59:00,752 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 13:59:00,752 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:59:00,752 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 271 [2023-08-30 13:59:00,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:59:00,870 INFO L130 PetriNetUnfolder]: 289/550 cut-off events. [2023-08-30 13:59:00,871 INFO L131 PetriNetUnfolder]: For 507/511 co-relation queries the response was YES. [2023-08-30 13:59:00,872 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 13:59:00,874 INFO L137 encePairwiseOnDemand]: 268/271 looper letters, 45 selfloop transitions, 2 changer transitions 1/50 dead transitions. [2023-08-30 13:59:00,875 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 50 transitions, 344 flow [2023-08-30 13:59:00,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 13:59:00,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 13:59:00,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 521 transitions. [2023-08-30 13:59:00,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4806273062730627 [2023-08-30 13:59:00,877 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 521 transitions. [2023-08-30 13:59:00,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 521 transitions. [2023-08-30 13:59:00,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:59:00,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 521 transitions. [2023-08-30 13:59:00,878 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 13:59:00,880 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 13:59:00,880 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 13:59:00,880 INFO L175 Difference]: Start difference. First operand has 49 places, 48 transitions, 244 flow. Second operand 4 states and 521 transitions. [2023-08-30 13:59:00,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 50 transitions, 344 flow [2023-08-30 13:59:00,882 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 13:59:00,883 INFO L231 Difference]: Finished difference. Result has 50 places, 46 transitions, 236 flow [2023-08-30 13:59:00,883 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 13:59:00,884 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 20 predicate places. [2023-08-30 13:59:00,884 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 46 transitions, 236 flow [2023-08-30 13:59:00,889 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 13:59:00,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:59:00,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 13:59:00,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 13:59:01,095 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 13:59:01,095 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 13:59:01,096 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:59:01,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1050746213, now seen corresponding path program 1 times [2023-08-30 13:59:01,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:59:01,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393979074] [2023-08-30 13:59:01,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:59:01,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:59:01,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:59:01,226 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 13:59:01,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:59:01,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393979074] [2023-08-30 13:59:01,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393979074] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:59:01,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:59:01,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 13:59:01,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326079881] [2023-08-30 13:59:01,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:59:01,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 13:59:01,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:59:01,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 13:59:01,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 13:59:01,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 271 [2023-08-30 13:59:01,337 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 13:59:01,337 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:59:01,337 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 271 [2023-08-30 13:59:01,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:59:01,633 INFO L130 PetriNetUnfolder]: 690/1305 cut-off events. [2023-08-30 13:59:01,634 INFO L131 PetriNetUnfolder]: For 1077/1094 co-relation queries the response was YES. [2023-08-30 13:59:01,636 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 13:59:01,642 INFO L137 encePairwiseOnDemand]: 263/271 looper letters, 122 selfloop transitions, 18 changer transitions 0/142 dead transitions. [2023-08-30 13:59:01,642 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 142 transitions, 958 flow [2023-08-30 13:59:01,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 13:59:01,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 13:59:01,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 819 transitions. [2023-08-30 13:59:01,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.503690036900369 [2023-08-30 13:59:01,645 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 819 transitions. [2023-08-30 13:59:01,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 819 transitions. [2023-08-30 13:59:01,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:59:01,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 819 transitions. [2023-08-30 13:59:01,647 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 13:59:01,649 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 13:59:01,650 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 13:59:01,650 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 236 flow. Second operand 6 states and 819 transitions. [2023-08-30 13:59:01,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 142 transitions, 958 flow [2023-08-30 13:59:01,654 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 13:59:01,656 INFO L231 Difference]: Finished difference. Result has 58 places, 63 transitions, 427 flow [2023-08-30 13:59:01,656 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 13:59:01,657 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 28 predicate places. [2023-08-30 13:59:01,657 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 63 transitions, 427 flow [2023-08-30 13:59:01,658 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 13:59:01,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:59:01,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 13:59:01,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 13:59:01,658 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 13:59:01,659 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:59:01,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1732615525, now seen corresponding path program 2 times [2023-08-30 13:59:01,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:59:01,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715339954] [2023-08-30 13:59:01,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:59:01,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:59:01,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:59:01,812 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 13:59:01,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:59:01,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715339954] [2023-08-30 13:59:01,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715339954] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:59:01,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:59:01,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 13:59:01,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672090197] [2023-08-30 13:59:01,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:59:01,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 13:59:01,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:59:01,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 13:59:01,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 13:59:01,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 271 [2023-08-30 13:59:01,900 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 13:59:01,900 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:59:01,900 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 271 [2023-08-30 13:59:01,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:59:02,271 INFO L130 PetriNetUnfolder]: 1202/2259 cut-off events. [2023-08-30 13:59:02,271 INFO L131 PetriNetUnfolder]: For 4127/4153 co-relation queries the response was YES. [2023-08-30 13:59:02,276 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 13:59:02,286 INFO L137 encePairwiseOnDemand]: 262/271 looper letters, 128 selfloop transitions, 30 changer transitions 2/162 dead transitions. [2023-08-30 13:59:02,287 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 162 transitions, 1331 flow [2023-08-30 13:59:02,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 13:59:02,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 13:59:02,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 943 transitions. [2023-08-30 13:59:02,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49710068529256723 [2023-08-30 13:59:02,290 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 943 transitions. [2023-08-30 13:59:02,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 943 transitions. [2023-08-30 13:59:02,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:59:02,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 943 transitions. [2023-08-30 13:59:02,292 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 13:59:02,295 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 13:59:02,295 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 13:59:02,295 INFO L175 Difference]: Start difference. First operand has 58 places, 63 transitions, 427 flow. Second operand 7 states and 943 transitions. [2023-08-30 13:59:02,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 162 transitions, 1331 flow [2023-08-30 13:59:02,302 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 13:59:02,305 INFO L231 Difference]: Finished difference. Result has 68 places, 88 transitions, 788 flow [2023-08-30 13:59:02,305 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 13:59:02,306 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 38 predicate places. [2023-08-30 13:59:02,306 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 88 transitions, 788 flow [2023-08-30 13:59:02,306 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 13:59:02,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:59:02,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 13:59:02,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 13:59:02,307 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 13:59:02,307 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:59:02,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1850682349, now seen corresponding path program 3 times [2023-08-30 13:59:02,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:59:02,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101963041] [2023-08-30 13:59:02,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:59:02,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:59:02,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:59:02,423 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 13:59:02,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:59:02,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101963041] [2023-08-30 13:59:02,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101963041] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:59:02,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:59:02,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 13:59:02,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514134103] [2023-08-30 13:59:02,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:59:02,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 13:59:02,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:59:02,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 13:59:02,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 13:59:02,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 271 [2023-08-30 13:59:02,524 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 13:59:02,524 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:59:02,524 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 271 [2023-08-30 13:59:02,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:59:02,869 INFO L130 PetriNetUnfolder]: 1181/2194 cut-off events. [2023-08-30 13:59:02,869 INFO L131 PetriNetUnfolder]: For 6729/6754 co-relation queries the response was YES. [2023-08-30 13:59:02,876 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 13:59:02,887 INFO L137 encePairwiseOnDemand]: 267/271 looper letters, 92 selfloop transitions, 7 changer transitions 3/104 dead transitions. [2023-08-30 13:59:02,887 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 104 transitions, 1064 flow [2023-08-30 13:59:02,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 13:59:02,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 13:59:02,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 766 transitions. [2023-08-30 13:59:02,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4710947109471095 [2023-08-30 13:59:02,889 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 766 transitions. [2023-08-30 13:59:02,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 766 transitions. [2023-08-30 13:59:02,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:59:02,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 766 transitions. [2023-08-30 13:59:02,891 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 13:59:02,893 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 13:59:02,894 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 13:59:02,894 INFO L175 Difference]: Start difference. First operand has 68 places, 88 transitions, 788 flow. Second operand 6 states and 766 transitions. [2023-08-30 13:59:02,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 104 transitions, 1064 flow [2023-08-30 13:59:02,909 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 13:59:02,913 INFO L231 Difference]: Finished difference. Result has 70 places, 87 transitions, 763 flow [2023-08-30 13:59:02,913 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 13:59:02,915 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 40 predicate places. [2023-08-30 13:59:02,915 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 87 transitions, 763 flow [2023-08-30 13:59:02,915 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 13:59:02,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:59:02,915 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 13:59:02,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 13:59:02,916 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 13:59:02,916 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:59:02,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1896177130, now seen corresponding path program 1 times [2023-08-30 13:59:02,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:59:02,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034182972] [2023-08-30 13:59:02,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:59:02,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:59:02,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:59:02,978 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 13:59:02,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:59:02,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034182972] [2023-08-30 13:59:02,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034182972] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 13:59:02,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451471196] [2023-08-30 13:59:02,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:59:02,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:59:02,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:59:02,981 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 13:59:02,993 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 13:59:03,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:59:03,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 13:59:03,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:59:03,100 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 13:59:03,101 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 13:59:03,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [451471196] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:59:03,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 13:59:03,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-08-30 13:59:03,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132886565] [2023-08-30 13:59:03,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:59:03,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 13:59:03,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:59:03,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 13:59:03,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-08-30 13:59:03,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 271 [2023-08-30 13:59:03,122 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 13:59:03,122 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:59:03,122 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 271 [2023-08-30 13:59:03,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:59:03,440 INFO L130 PetriNetUnfolder]: 1181/2128 cut-off events. [2023-08-30 13:59:03,440 INFO L131 PetriNetUnfolder]: For 6365/6365 co-relation queries the response was YES. [2023-08-30 13:59:03,446 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 13:59:03,456 INFO L137 encePairwiseOnDemand]: 266/271 looper letters, 165 selfloop transitions, 6 changer transitions 1/173 dead transitions. [2023-08-30 13:59:03,456 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 173 transitions, 1824 flow [2023-08-30 13:59:03,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 13:59:03,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 13:59:03,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 799 transitions. [2023-08-30 13:59:03,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.491389913899139 [2023-08-30 13:59:03,459 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 799 transitions. [2023-08-30 13:59:03,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 799 transitions. [2023-08-30 13:59:03,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:59:03,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 799 transitions. [2023-08-30 13:59:03,461 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 13:59:03,463 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 13:59:03,463 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 13:59:03,464 INFO L175 Difference]: Start difference. First operand has 70 places, 87 transitions, 763 flow. Second operand 6 states and 799 transitions. [2023-08-30 13:59:03,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 173 transitions, 1824 flow [2023-08-30 13:59:03,471 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 13:59:03,473 INFO L231 Difference]: Finished difference. Result has 71 places, 86 transitions, 759 flow [2023-08-30 13:59:03,473 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 13:59:03,474 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 41 predicate places. [2023-08-30 13:59:03,474 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 86 transitions, 759 flow [2023-08-30 13:59:03,475 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 13:59:03,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:59:03,475 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 13:59:03,481 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 13:59:03,681 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 13:59:03,681 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 13:59:03,681 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:59:03,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1896176952, now seen corresponding path program 1 times [2023-08-30 13:59:03,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:59:03,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458177832] [2023-08-30 13:59:03,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:59:03,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:59:03,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:59:03,741 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 13:59:03,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:59:03,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458177832] [2023-08-30 13:59:03,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458177832] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 13:59:03,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854479021] [2023-08-30 13:59:03,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:59:03,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:59:03,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:59:03,743 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 13:59:03,768 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 13:59:03,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:59:03,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 13:59:03,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:59:03,861 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 13:59:03,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 13:59:03,894 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 13:59:03,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854479021] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 13:59:03,895 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 13:59:03,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-08-30 13:59:03,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058827899] [2023-08-30 13:59:03,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 13:59:03,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 13:59:03,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:59:03,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 13:59:03,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-08-30 13:59:03,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 271 [2023-08-30 13:59:03,932 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 13:59:03,933 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:59:03,933 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 271 [2023-08-30 13:59:03,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:59:04,951 INFO L130 PetriNetUnfolder]: 3709/6643 cut-off events. [2023-08-30 13:59:04,951 INFO L131 PetriNetUnfolder]: For 20038/20038 co-relation queries the response was YES. [2023-08-30 13:59:04,971 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 13:59:05,000 INFO L137 encePairwiseOnDemand]: 266/271 looper letters, 431 selfloop transitions, 12 changer transitions 2/446 dead transitions. [2023-08-30 13:59:05,001 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 446 transitions, 4739 flow [2023-08-30 13:59:05,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 13:59:05,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 13:59:05,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1366 transitions. [2023-08-30 13:59:05,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5040590405904058 [2023-08-30 13:59:05,004 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1366 transitions. [2023-08-30 13:59:05,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1366 transitions. [2023-08-30 13:59:05,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:59:05,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1366 transitions. [2023-08-30 13:59:05,008 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 13:59:05,011 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 13:59:05,012 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 13:59:05,012 INFO L175 Difference]: Start difference. First operand has 71 places, 86 transitions, 759 flow. Second operand 10 states and 1366 transitions. [2023-08-30 13:59:05,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 446 transitions, 4739 flow [2023-08-30 13:59:05,046 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 13:59:05,050 INFO L231 Difference]: Finished difference. Result has 79 places, 95 transitions, 837 flow [2023-08-30 13:59:05,051 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 13:59:05,051 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 49 predicate places. [2023-08-30 13:59:05,051 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 95 transitions, 837 flow [2023-08-30 13:59:05,052 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 13:59:05,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:59:05,052 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 13:59:05,063 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 13:59:05,258 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 13:59:05,259 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 13:59:05,259 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:59:05,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1150288132, now seen corresponding path program 1 times [2023-08-30 13:59:05,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:59:05,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062544783] [2023-08-30 13:59:05,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:59:05,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:59:05,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:59:05,439 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 13:59:05,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:59:05,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062544783] [2023-08-30 13:59:05,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062544783] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 13:59:05,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546483346] [2023-08-30 13:59:05,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:59:05,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:59:05,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:59:05,441 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 13:59:05,450 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 13:59:05,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:59:05,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 40 conjunts are in the unsatisfiable core [2023-08-30 13:59:05,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:59:05,667 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 13:59:05,860 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 13:59:05,876 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 13:59:05,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 13:59:06,049 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 13:59:06,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546483346] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-30 13:59:06,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-30 13:59:06,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 7] total 17 [2023-08-30 13:59:06,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153963669] [2023-08-30 13:59:06,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:59:06,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 13:59:06,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:59:06,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 13:59:06,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2023-08-30 13:59:06,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 271 [2023-08-30 13:59:06,444 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 13:59:06,444 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:59:06,444 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 271 [2023-08-30 13:59:06,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:59:07,633 INFO L130 PetriNetUnfolder]: 5432/9774 cut-off events. [2023-08-30 13:59:07,633 INFO L131 PetriNetUnfolder]: For 35594/35594 co-relation queries the response was YES. [2023-08-30 13:59:07,682 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 13:59:07,729 INFO L137 encePairwiseOnDemand]: 261/271 looper letters, 139 selfloop transitions, 63 changer transitions 1/204 dead transitions. [2023-08-30 13:59:07,729 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 204 transitions, 2112 flow [2023-08-30 13:59:07,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 13:59:07,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 13:59:07,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 657 transitions. [2023-08-30 13:59:07,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48487084870848707 [2023-08-30 13:59:07,731 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 657 transitions. [2023-08-30 13:59:07,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 657 transitions. [2023-08-30 13:59:07,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:59:07,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 657 transitions. [2023-08-30 13:59:07,733 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 13:59:07,735 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 13:59:07,735 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 13:59:07,736 INFO L175 Difference]: Start difference. First operand has 79 places, 95 transitions, 837 flow. Second operand 5 states and 657 transitions. [2023-08-30 13:59:07,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 204 transitions, 2112 flow [2023-08-30 13:59:07,779 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 13:59:07,782 INFO L231 Difference]: Finished difference. Result has 85 places, 139 transitions, 1540 flow [2023-08-30 13:59:07,782 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 13:59:07,782 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 55 predicate places. [2023-08-30 13:59:07,783 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 139 transitions, 1540 flow [2023-08-30 13:59:07,783 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 13:59:07,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:59:07,783 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 13:59:07,789 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-30 13:59:07,989 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 13:59:07,990 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 13:59:07,990 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:59:07,990 INFO L85 PathProgramCache]: Analyzing trace with hash -908990522, now seen corresponding path program 2 times [2023-08-30 13:59:07,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:59:07,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85262378] [2023-08-30 13:59:07,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:59:07,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:59:08,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:59:08,258 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 13:59:08,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:59:08,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85262378] [2023-08-30 13:59:08,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85262378] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:59:08,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:59:08,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 13:59:08,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637950506] [2023-08-30 13:59:08,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:59:08,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 13:59:08,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:59:08,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 13:59:08,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-30 13:59:08,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 271 [2023-08-30 13:59:08,463 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 13:59:08,463 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:59:08,463 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 271 [2023-08-30 13:59:08,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:59:09,954 INFO L130 PetriNetUnfolder]: 6748/12584 cut-off events. [2023-08-30 13:59:09,954 INFO L131 PetriNetUnfolder]: For 72870/72870 co-relation queries the response was YES. [2023-08-30 13:59:10,018 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 13:59:10,093 INFO L137 encePairwiseOnDemand]: 260/271 looper letters, 184 selfloop transitions, 98 changer transitions 2/285 dead transitions. [2023-08-30 13:59:10,093 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 285 transitions, 3586 flow [2023-08-30 13:59:10,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 13:59:10,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 13:59:10,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1139 transitions. [2023-08-30 13:59:10,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46699466994669947 [2023-08-30 13:59:10,097 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1139 transitions. [2023-08-30 13:59:10,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1139 transitions. [2023-08-30 13:59:10,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:59:10,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1139 transitions. [2023-08-30 13:59:10,100 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 13:59:10,103 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 13:59:10,104 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 13:59:10,104 INFO L175 Difference]: Start difference. First operand has 85 places, 139 transitions, 1540 flow. Second operand 9 states and 1139 transitions. [2023-08-30 13:59:10,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 285 transitions, 3586 flow [2023-08-30 13:59:10,274 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 13:59:10,281 INFO L231 Difference]: Finished difference. Result has 97 places, 204 transitions, 2788 flow [2023-08-30 13:59:10,281 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 13:59:10,283 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 67 predicate places. [2023-08-30 13:59:10,283 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 204 transitions, 2788 flow [2023-08-30 13:59:10,284 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 13:59:10,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:59:10,284 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 13:59:10,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 13:59:10,284 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 13:59:10,285 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:59:10,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1773811512, now seen corresponding path program 3 times [2023-08-30 13:59:10,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:59:10,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105712828] [2023-08-30 13:59:10,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:59:10,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:59:10,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:59:10,509 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 13:59:10,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:59:10,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105712828] [2023-08-30 13:59:10,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105712828] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:59:10,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:59:10,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 13:59:10,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266940309] [2023-08-30 13:59:10,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:59:10,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 13:59:10,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:59:10,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 13:59:10,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 13:59:10,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 271 [2023-08-30 13:59:10,685 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 13:59:10,685 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:59:10,685 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 271 [2023-08-30 13:59:10,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:59:12,785 INFO L130 PetriNetUnfolder]: 8704/16732 cut-off events. [2023-08-30 13:59:12,786 INFO L131 PetriNetUnfolder]: For 126685/126685 co-relation queries the response was YES. [2023-08-30 13:59:12,858 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 13:59:13,101 INFO L137 encePairwiseOnDemand]: 258/271 looper letters, 282 selfloop transitions, 148 changer transitions 1/432 dead transitions. [2023-08-30 13:59:13,101 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 432 transitions, 6332 flow [2023-08-30 13:59:13,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 13:59:13,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 13:59:13,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1160 transitions. [2023-08-30 13:59:13,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4756047560475605 [2023-08-30 13:59:13,109 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1160 transitions. [2023-08-30 13:59:13,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1160 transitions. [2023-08-30 13:59:13,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:59:13,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1160 transitions. [2023-08-30 13:59:13,115 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 13:59:13,120 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 13:59:13,121 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 13:59:13,121 INFO L175 Difference]: Start difference. First operand has 97 places, 204 transitions, 2788 flow. Second operand 9 states and 1160 transitions. [2023-08-30 13:59:13,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 432 transitions, 6332 flow [2023-08-30 13:59:13,366 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 13:59:13,370 INFO L231 Difference]: Finished difference. Result has 109 places, 300 transitions, 4858 flow [2023-08-30 13:59:13,371 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 13:59:13,371 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 79 predicate places. [2023-08-30 13:59:13,371 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 300 transitions, 4858 flow [2023-08-30 13:59:13,372 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 13:59:13,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:59:13,372 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 13:59:13,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 13:59:13,372 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 13:59:13,372 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:59:13,372 INFO L85 PathProgramCache]: Analyzing trace with hash 986208303, now seen corresponding path program 1 times [2023-08-30 13:59:13,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:59:13,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708718015] [2023-08-30 13:59:13,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:59:13,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:59:13,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:59:13,568 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 13:59:13,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:59:13,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708718015] [2023-08-30 13:59:13,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708718015] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:59:13,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:59:13,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 13:59:13,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129726382] [2023-08-30 13:59:13,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:59:13,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 13:59:13,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:59:13,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 13:59:13,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-30 13:59:13,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 271 [2023-08-30 13:59:13,762 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 13:59:13,762 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:59:13,762 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 271 [2023-08-30 13:59:13,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:59:17,065 INFO L130 PetriNetUnfolder]: 10488/20155 cut-off events. [2023-08-30 13:59:17,065 INFO L131 PetriNetUnfolder]: For 209914/209914 co-relation queries the response was YES. [2023-08-30 13:59:17,157 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 13:59:17,241 INFO L137 encePairwiseOnDemand]: 262/271 looper letters, 291 selfloop transitions, 253 changer transitions 4/549 dead transitions. [2023-08-30 13:59:17,241 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 549 transitions, 9470 flow [2023-08-30 13:59:17,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 13:59:17,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 13:59:17,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1139 transitions. [2023-08-30 13:59:17,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46699466994669947 [2023-08-30 13:59:17,248 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1139 transitions. [2023-08-30 13:59:17,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1139 transitions. [2023-08-30 13:59:17,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:59:17,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1139 transitions. [2023-08-30 13:59:17,257 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 13:59:17,261 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 13:59:17,262 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 13:59:17,262 INFO L175 Difference]: Start difference. First operand has 109 places, 300 transitions, 4858 flow. Second operand 9 states and 1139 transitions. [2023-08-30 13:59:17,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 549 transitions, 9470 flow [2023-08-30 13:59:17,818 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 13:59:17,826 INFO L231 Difference]: Finished difference. Result has 122 places, 434 transitions, 8178 flow [2023-08-30 13:59:17,826 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 13:59:17,826 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 92 predicate places. [2023-08-30 13:59:17,827 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 434 transitions, 8178 flow [2023-08-30 13:59:17,827 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 13:59:17,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:59:17,827 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 13:59:17,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 13:59:17,828 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 13:59:17,828 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:59:17,828 INFO L85 PathProgramCache]: Analyzing trace with hash -224897961, now seen corresponding path program 2 times [2023-08-30 13:59:17,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:59:17,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924315585] [2023-08-30 13:59:17,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:59:17,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:59:17,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:59:18,087 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 13:59:18,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:59:18,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924315585] [2023-08-30 13:59:18,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924315585] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 13:59:18,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755636115] [2023-08-30 13:59:18,088 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 13:59:18,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:59:18,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:59:18,093 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 13:59:18,096 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 13:59:18,179 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 13:59:18,179 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 13:59:18,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 13:59:18,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:59:18,239 INFO L321 Elim1Store]: treesize reduction 16, result has 63.6 percent of original size [2023-08-30 13:59:18,239 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 13:59:18,418 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 13:59:18,418 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 13:59:18,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755636115] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:59:18,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 13:59:18,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2023-08-30 13:59:18,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684113238] [2023-08-30 13:59:18,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:59:18,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 13:59:18,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:59:18,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 13:59:18,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-08-30 13:59:18,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 271 [2023-08-30 13:59:18,477 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 13:59:18,477 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:59:18,477 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 271 [2023-08-30 13:59:18,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:59:22,371 INFO L130 PetriNetUnfolder]: 11578/22112 cut-off events. [2023-08-30 13:59:22,371 INFO L131 PetriNetUnfolder]: For 304304/304304 co-relation queries the response was YES. [2023-08-30 13:59:22,641 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 13:59:22,713 INFO L137 encePairwiseOnDemand]: 265/271 looper letters, 264 selfloop transitions, 409 changer transitions 0/674 dead transitions. [2023-08-30 13:59:22,713 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 674 transitions, 13677 flow [2023-08-30 13:59:22,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 13:59:22,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 13:59:22,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 652 transitions. [2023-08-30 13:59:22,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48118081180811806 [2023-08-30 13:59:22,715 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 652 transitions. [2023-08-30 13:59:22,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 652 transitions. [2023-08-30 13:59:22,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:59:22,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 652 transitions. [2023-08-30 13:59:22,718 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 13:59:22,719 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 13:59:22,720 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 13:59:22,720 INFO L175 Difference]: Start difference. First operand has 122 places, 434 transitions, 8178 flow. Second operand 5 states and 652 transitions. [2023-08-30 13:59:22,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 674 transitions, 13677 flow [2023-08-30 13:59:23,797 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 13:59:23,807 INFO L231 Difference]: Finished difference. Result has 128 places, 608 transitions, 12952 flow [2023-08-30 13:59:23,807 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 13:59:23,808 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 98 predicate places. [2023-08-30 13:59:23,808 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 608 transitions, 12952 flow [2023-08-30 13:59:23,808 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 13:59:23,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:59:23,809 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 13:59:23,821 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 13:59:24,016 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 13:59:24,017 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 13:59:24,017 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:59:24,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1391139318, now seen corresponding path program 4 times [2023-08-30 13:59:24,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:59:24,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164692440] [2023-08-30 13:59:24,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:59:24,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:59:24,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:59:24,185 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 13:59:24,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:59:24,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164692440] [2023-08-30 13:59:24,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164692440] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 13:59:24,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863048504] [2023-08-30 13:59:24,186 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 13:59:24,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:59:24,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:59:24,187 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 13:59:24,190 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 13:59:24,265 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 13:59:24,265 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 13:59:24,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-30 13:59:24,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:59:24,274 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 13:59:24,288 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 13:59:24,289 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 13:59:24,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863048504] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:59:24,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 13:59:24,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2023-08-30 13:59:24,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046489398] [2023-08-30 13:59:24,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:59:24,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 13:59:24,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:59:24,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 13:59:24,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-30 13:59:24,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 271 [2023-08-30 13:59:24,317 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 13:59:24,317 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:59:24,317 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 271 [2023-08-30 13:59:24,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:59:24,679 INFO L130 PetriNetUnfolder]: 364/837 cut-off events. [2023-08-30 13:59:24,679 INFO L131 PetriNetUnfolder]: For 10106/10106 co-relation queries the response was YES. [2023-08-30 13:59:24,684 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 13:59:24,686 INFO L137 encePairwiseOnDemand]: 266/271 looper letters, 36 selfloop transitions, 15 changer transitions 6/58 dead transitions. [2023-08-30 13:59:24,686 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 58 transitions, 716 flow [2023-08-30 13:59:24,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 13:59:24,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 13:59:24,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 400 transitions. [2023-08-30 13:59:24,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4920049200492005 [2023-08-30 13:59:24,689 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 400 transitions. [2023-08-30 13:59:24,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 400 transitions. [2023-08-30 13:59:24,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:59:24,689 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 400 transitions. [2023-08-30 13:59:24,690 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 13:59:24,691 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 13:59:24,691 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 13:59:24,691 INFO L175 Difference]: Start difference. First operand has 128 places, 608 transitions, 12952 flow. Second operand 3 states and 400 transitions. [2023-08-30 13:59:24,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 58 transitions, 716 flow [2023-08-30 13:59:24,708 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 13:59:24,709 INFO L231 Difference]: Finished difference. Result has 79 places, 46 transitions, 347 flow [2023-08-30 13:59:24,709 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 13:59:24,710 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 49 predicate places. [2023-08-30 13:59:24,710 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 46 transitions, 347 flow [2023-08-30 13:59:24,710 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 13:59:24,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:59:24,710 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 13:59:24,719 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 13:59:24,917 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 13:59:24,917 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 13:59:24,917 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:59:24,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1151240646, now seen corresponding path program 2 times [2023-08-30 13:59:24,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:59:24,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841232069] [2023-08-30 13:59:24,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:59:24,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:59:24,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:59:25,073 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 13:59:25,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:59:25,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841232069] [2023-08-30 13:59:25,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841232069] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 13:59:25,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216995150] [2023-08-30 13:59:25,074 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 13:59:25,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:59:25,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:59:25,076 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 13:59:25,079 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 13:59:25,186 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 13:59:25,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 13:59:25,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 13:59:25,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:59:25,233 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 13:59:25,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 13:59:25,365 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 13:59:25,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216995150] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 13:59:25,366 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 13:59:25,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2023-08-30 13:59:25,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291868737] [2023-08-30 13:59:25,366 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 13:59:25,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-30 13:59:25,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:59:25,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-30 13:59:25,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2023-08-30 13:59:25,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 271 [2023-08-30 13:59:25,430 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 13:59:25,430 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:59:25,430 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 271 [2023-08-30 13:59:25,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:59:26,010 INFO L130 PetriNetUnfolder]: 500/1316 cut-off events. [2023-08-30 13:59:26,010 INFO L131 PetriNetUnfolder]: For 7372/7372 co-relation queries the response was YES. [2023-08-30 13:59:26,016 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 13:59:26,019 INFO L137 encePairwiseOnDemand]: 266/271 looper letters, 320 selfloop transitions, 30 changer transitions 76/427 dead transitions. [2023-08-30 13:59:26,019 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 427 transitions, 4135 flow [2023-08-30 13:59:26,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-30 13:59:26,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-30 13:59:26,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2938 transitions. [2023-08-30 13:59:26,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49278765514927875 [2023-08-30 13:59:26,025 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2938 transitions. [2023-08-30 13:59:26,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2938 transitions. [2023-08-30 13:59:26,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:59:26,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2938 transitions. [2023-08-30 13:59:26,032 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 13:59:26,039 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 13:59:26,040 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 13:59:26,040 INFO L175 Difference]: Start difference. First operand has 79 places, 46 transitions, 347 flow. Second operand 22 states and 2938 transitions. [2023-08-30 13:59:26,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 427 transitions, 4135 flow [2023-08-30 13:59:26,051 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 13:59:26,054 INFO L231 Difference]: Finished difference. Result has 94 places, 64 transitions, 524 flow [2023-08-30 13:59:26,055 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 13:59:26,055 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 64 predicate places. [2023-08-30 13:59:26,055 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 64 transitions, 524 flow [2023-08-30 13:59:26,056 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 13:59:26,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:59:26,056 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 13:59:26,064 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 13:59:26,262 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 13:59:26,263 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 13:59:26,263 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:59:26,263 INFO L85 PathProgramCache]: Analyzing trace with hash 987548702, now seen corresponding path program 3 times [2023-08-30 13:59:26,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:59:26,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400157408] [2023-08-30 13:59:26,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:59:26,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:59:26,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:59:26,699 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 13:59:26,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:59:26,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400157408] [2023-08-30 13:59:26,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400157408] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 13:59:26,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103987092] [2023-08-30 13:59:26,699 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 13:59:26,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:59:26,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:59:26,701 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 13:59:26,706 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 13:59:26,830 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-30 13:59:26,830 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 13:59:26,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 42 conjunts are in the unsatisfiable core [2023-08-30 13:59:26,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:59:26,858 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 13:59:26,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 13:59:26,865 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 13:59:26,976 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 13:59:27,171 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 13:59:27,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 13:59:27,365 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 13:59:27,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [103987092] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 13:59:27,365 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 13:59:27,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 6, 6] total 34 [2023-08-30 13:59:27,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810555867] [2023-08-30 13:59:27,365 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 13:59:27,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-08-30 13:59:27,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:59:27,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-08-30 13:59:27,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=920, Unknown=0, NotChecked=0, Total=1122 [2023-08-30 13:59:28,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 271 [2023-08-30 13:59:28,344 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 13:59:28,344 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:59:28,344 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 271 [2023-08-30 13:59:28,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:59:29,463 INFO L130 PetriNetUnfolder]: 549/1453 cut-off events. [2023-08-30 13:59:29,463 INFO L131 PetriNetUnfolder]: For 8313/8313 co-relation queries the response was YES. [2023-08-30 13:59:29,470 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 13:59:29,474 INFO L137 encePairwiseOnDemand]: 259/271 looper letters, 317 selfloop transitions, 88 changer transitions 96/502 dead transitions. [2023-08-30 13:59:29,474 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 502 transitions, 4092 flow [2023-08-30 13:59:29,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-08-30 13:59:29,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2023-08-30 13:59:29,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 5337 transitions. [2023-08-30 13:59:29,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43763837638376385 [2023-08-30 13:59:29,482 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 5337 transitions. [2023-08-30 13:59:29,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 5337 transitions. [2023-08-30 13:59:29,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:59:29,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 5337 transitions. [2023-08-30 13:59:29,491 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 13:59:29,504 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 13:59:29,508 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 13:59:29,508 INFO L175 Difference]: Start difference. First operand has 94 places, 64 transitions, 524 flow. Second operand 45 states and 5337 transitions. [2023-08-30 13:59:29,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 502 transitions, 4092 flow [2023-08-30 13:59:29,525 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 13:59:29,529 INFO L231 Difference]: Finished difference. Result has 136 places, 118 transitions, 973 flow [2023-08-30 13:59:29,530 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 13:59:29,530 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 106 predicate places. [2023-08-30 13:59:29,530 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 118 transitions, 973 flow [2023-08-30 13:59:29,531 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 13:59:29,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:59:29,531 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1] [2023-08-30 13:59:29,545 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 13:59:29,737 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 13:59:29,737 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 13:59:29,738 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:59:29,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1777636148, now seen corresponding path program 4 times [2023-08-30 13:59:29,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:59:29,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664917977] [2023-08-30 13:59:29,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:59:29,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:59:29,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:59:30,223 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 13:59:30,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:59:30,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664917977] [2023-08-30 13:59:30,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664917977] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 13:59:30,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457752883] [2023-08-30 13:59:30,223 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 13:59:30,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:59:30,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:59:30,225 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 13:59:30,228 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 13:59:30,411 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 13:59:30,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 13:59:30,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-30 13:59:30,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:59:30,504 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 13:59:30,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 13:59:31,040 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 13:59:31,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457752883] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 13:59:31,041 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 13:59:31,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 51 [2023-08-30 13:59:31,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727583829] [2023-08-30 13:59:31,041 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 13:59:31,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-08-30 13:59:31,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:59:31,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-08-30 13:59:31,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=701, Invalid=1951, Unknown=0, NotChecked=0, Total=2652 [2023-08-30 13:59:31,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 271 [2023-08-30 13:59:31,165 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 13:59:31,165 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:59:31,165 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 271 [2023-08-30 13:59:31,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:59:32,692 INFO L130 PetriNetUnfolder]: 1134/3052 cut-off events. [2023-08-30 13:59:32,692 INFO L131 PetriNetUnfolder]: For 40415/40415 co-relation queries the response was YES. [2023-08-30 13:59:32,702 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 13:59:32,708 INFO L137 encePairwiseOnDemand]: 266/271 looper letters, 755 selfloop transitions, 75 changer transitions 188/1019 dead transitions. [2023-08-30 13:59:32,708 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 1019 transitions, 9068 flow [2023-08-30 13:59:32,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-08-30 13:59:32,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2023-08-30 13:59:32,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 6697 transitions. [2023-08-30 13:59:32,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49424354243542434 [2023-08-30 13:59:32,716 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 6697 transitions. [2023-08-30 13:59:32,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 6697 transitions. [2023-08-30 13:59:32,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:59:32,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 6697 transitions. [2023-08-30 13:59:32,726 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 13:59:32,739 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 13:59:32,742 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 13:59:32,742 INFO L175 Difference]: Start difference. First operand has 136 places, 118 transitions, 973 flow. Second operand 50 states and 6697 transitions. [2023-08-30 13:59:32,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 1019 transitions, 9068 flow [2023-08-30 13:59:32,773 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 13:59:32,780 INFO L231 Difference]: Finished difference. Result has 175 places, 157 transitions, 1454 flow [2023-08-30 13:59:32,780 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 13:59:32,781 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 145 predicate places. [2023-08-30 13:59:32,781 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 157 transitions, 1454 flow [2023-08-30 13:59:32,782 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 13:59:32,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:59:32,783 INFO L208 CegarLoopForPetriNet]: trace histogram [25, 24, 22, 22, 3, 3, 3, 3, 1, 1, 1, 1] [2023-08-30 13:59:32,790 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-08-30 13:59:32,988 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 13:59:32,989 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 13:59:32,989 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:59:32,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1160580830, now seen corresponding path program 5 times [2023-08-30 13:59:32,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:59:32,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164724646] [2023-08-30 13:59:32,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:59:32,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:59:33,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:59:34,514 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 13:59:34,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:59:34,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164724646] [2023-08-30 13:59:34,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164724646] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 13:59:34,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484699885] [2023-08-30 13:59:34,515 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 13:59:34,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:59:34,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:59:34,516 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 13:59:34,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-30 13:59:35,022 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2023-08-30 13:59:35,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 13:59:35,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 933 conjuncts, 51 conjunts are in the unsatisfiable core [2023-08-30 13:59:35,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:59:35,193 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 13:59:35,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 13:59:37,115 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 13:59:37,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484699885] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 13:59:37,116 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 13:59:37,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 103 [2023-08-30 13:59:37,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346740880] [2023-08-30 13:59:37,116 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 13:59:37,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2023-08-30 13:59:37,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:59:37,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2023-08-30 13:59:37,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2755, Invalid=7957, Unknown=0, NotChecked=0, Total=10712 [2023-08-30 13:59:37,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 271 [2023-08-30 13:59:37,357 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 13:59:37,358 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:59:37,358 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 271 [2023-08-30 13:59:37,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:59:42,850 INFO L130 PetriNetUnfolder]: 2304/6250 cut-off events. [2023-08-30 13:59:42,850 INFO L131 PetriNetUnfolder]: For 288184/288184 co-relation queries the response was YES. [2023-08-30 13:59:42,895 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 13:59:42,913 INFO L137 encePairwiseOnDemand]: 266/271 looper letters, 1561 selfloop transitions, 153 changer transitions 396/2111 dead transitions. [2023-08-30 13:59:42,913 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 2111 transitions, 18961 flow [2023-08-30 13:59:42,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2023-08-30 13:59:42,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2023-08-30 13:59:42,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 13678 transitions. [2023-08-30 13:59:42,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49482671297301206 [2023-08-30 13:59:42,933 INFO L72 ComplementDD]: Start complementDD. Operand 102 states and 13678 transitions. [2023-08-30 13:59:42,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 102 states and 13678 transitions. [2023-08-30 13:59:42,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:59:42,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 102 states and 13678 transitions. [2023-08-30 13:59:42,957 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 13:59:42,983 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 13:59:42,988 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 13:59:42,988 INFO L175 Difference]: Start difference. First operand has 175 places, 157 transitions, 1454 flow. Second operand 102 states and 13678 transitions. [2023-08-30 13:59:42,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 2111 transitions, 18961 flow [2023-08-30 13:59:43,181 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 13:59:43,194 INFO L231 Difference]: Finished difference. Result has 278 places, 235 transitions, 2249 flow [2023-08-30 13:59:43,194 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 13:59:43,194 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 248 predicate places. [2023-08-30 13:59:43,194 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 235 transitions, 2249 flow [2023-08-30 13:59:43,196 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 13:59:43,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:59:43,196 INFO L208 CegarLoopForPetriNet]: trace histogram [51, 50, 48, 48, 3, 3, 3, 3, 1, 1, 1, 1] [2023-08-30 13:59:43,203 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 13:59:43,397 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 13:59:43,397 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 13:59:43,397 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:59:43,397 INFO L85 PathProgramCache]: Analyzing trace with hash -789791746, now seen corresponding path program 6 times [2023-08-30 13:59:43,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:59:43,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192842669] [2023-08-30 13:59:43,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:59:43,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:59:43,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:59:49,243 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 13:59:49,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:59:49,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192842669] [2023-08-30 13:59:49,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192842669] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 13:59:49,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138210714] [2023-08-30 13:59:49,244 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 13:59:49,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:59:49,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:59:49,247 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 13:59:49,248 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 13:59:49,609 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2023-08-30 13:59:49,609 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 13:59:49,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 72 conjunts are in the unsatisfiable core [2023-08-30 13:59:49,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:59:49,642 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 13:59:49,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 13:59:49,649 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 13:59:49,872 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 13:59:50,066 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 13:59:50,251 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 13:59:51,166 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 13:59:51,167 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 13:59:52,187 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 13:59:52,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138210714] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 13:59:52,188 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 13:59:52,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 12, 12] total 126 [2023-08-30 13:59:52,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082446572] [2023-08-30 13:59:52,188 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 13:59:52,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 126 states [2023-08-30 13:59:52,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:59:52,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2023-08-30 13:59:52,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2951, Invalid=12799, Unknown=0, NotChecked=0, Total=15750 [2023-08-30 13:59:54,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 271 [2023-08-30 13:59:54,768 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 13:59:54,768 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:59:54,768 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 271 [2023-08-30 13:59:54,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:00:04,215 INFO L130 PetriNetUnfolder]: 2357/6401 cut-off events. [2023-08-30 14:00:04,215 INFO L131 PetriNetUnfolder]: For 109617/109617 co-relation queries the response was YES. [2023-08-30 14:00:04,274 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 14:00:04,293 INFO L137 encePairwiseOnDemand]: 259/271 looper letters, 1423 selfloop transitions, 390 changer transitions 440/2254 dead transitions. [2023-08-30 14:00:04,293 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 2254 transitions, 19922 flow [2023-08-30 14:00:04,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2023-08-30 14:00:04,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2023-08-30 14:00:04,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 21602 transitions. [2023-08-30 14:00:04,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43558566733208315 [2023-08-30 14:00:04,323 INFO L72 ComplementDD]: Start complementDD. Operand 183 states and 21602 transitions. [2023-08-30 14:00:04,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 183 states and 21602 transitions. [2023-08-30 14:00:04,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:00:04,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 183 states and 21602 transitions. [2023-08-30 14:00:04,365 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 14:00:04,405 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 14:00:04,414 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 14:00:04,414 INFO L175 Difference]: Start difference. First operand has 278 places, 235 transitions, 2249 flow. Second operand 183 states and 21602 transitions. [2023-08-30 14:00:04,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 2254 transitions, 19922 flow [2023-08-30 14:00:04,606 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 14:00:04,619 INFO L231 Difference]: Finished difference. Result has 428 places, 424 transitions, 4101 flow [2023-08-30 14:00:04,620 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 14:00:04,620 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 398 predicate places. [2023-08-30 14:00:04,620 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 424 transitions, 4101 flow [2023-08-30 14:00:04,622 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 14:00:04,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:00:04,622 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 14:00:04,630 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 14:00:04,822 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 14:00:04,822 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 14:00:04,823 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:00:04,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1584149825, now seen corresponding path program 1 times [2023-08-30 14:00:04,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:00:04,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907964719] [2023-08-30 14:00:04,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:00:04,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:00:04,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:00:06,048 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 14:00:06,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:00:06,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907964719] [2023-08-30 14:00:06,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907964719] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:00:06,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089700919] [2023-08-30 14:00:06,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:00:06,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:00:06,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:00:06,050 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 14:00:06,057 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 14:00:06,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:00:06,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 1828 conjuncts, 105 conjunts are in the unsatisfiable core [2023-08-30 14:00:06,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:00:09,583 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 14:00:09,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:00:16,810 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 14:00:16,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089700919] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:00:16,810 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:00:16,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 105, 105] total 220 [2023-08-30 14:00:16,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453872174] [2023-08-30 14:00:16,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:00:16,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 220 states [2023-08-30 14:00:16,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:00:16,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 220 interpolants. [2023-08-30 14:00:16,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11162, Invalid=37018, Unknown=0, NotChecked=0, Total=48180 [2023-08-30 14:00:21,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 271 [2023-08-30 14:00:21,790 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 14:00:21,790 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:00:21,790 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 271 [2023-08-30 14:00:21,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:03:09,389 INFO L130 PetriNetUnfolder]: 5674/15186 cut-off events. [2023-08-30 14:03:09,389 INFO L131 PetriNetUnfolder]: For 2800099/2800099 co-relation queries the response was YES. [2023-08-30 14:03:09,538 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 14:03:09,579 INFO L137 encePairwiseOnDemand]: 256/271 looper letters, 2710 selfloop transitions, 3220 changer transitions 1039/6970 dead transitions. [2023-08-30 14:03:09,580 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1786 places, 6970 transitions, 68752 flow [2023-08-30 14:03:09,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1359 states. [2023-08-30 14:03:09,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1359 states. [2023-08-30 14:03:09,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1359 states to 1359 states and 147425 transitions. [2023-08-30 14:03:09,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40029704932810917 [2023-08-30 14:03:09,701 INFO L72 ComplementDD]: Start complementDD. Operand 1359 states and 147425 transitions. [2023-08-30 14:03:09,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1359 states and 147425 transitions. [2023-08-30 14:03:09,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:03:09,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 1359 states and 147425 transitions. [2023-08-30 14:03:09,881 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 14:03:10,131 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 14:03:10,185 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 14:03:10,185 INFO L175 Difference]: Start difference. First operand has 428 places, 424 transitions, 4101 flow. Second operand 1359 states and 147425 transitions. [2023-08-30 14:03:10,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1786 places, 6970 transitions, 68752 flow [2023-08-30 14:03:11,203 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 14:03:11,263 INFO L231 Difference]: Finished difference. Result has 2192 places, 3351 transitions, 41531 flow [2023-08-30 14:03:11,264 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 14:03:11,264 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 2162 predicate places. [2023-08-30 14:03:11,264 INFO L495 AbstractCegarLoop]: Abstraction has has 2192 places, 3351 transitions, 41531 flow [2023-08-30 14:03:11,267 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 14:03:11,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:03:11,267 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 14:03:11,274 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-08-30 14:03:11,467 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 14:03:11,468 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 14:03:11,468 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:03:11,468 INFO L85 PathProgramCache]: Analyzing trace with hash -199603345, now seen corresponding path program 2 times [2023-08-30 14:03:11,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:03:11,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665967010] [2023-08-30 14:03:11,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:03:11,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:03:11,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:03:30,654 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 14:03:30,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:03:30,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665967010] [2023-08-30 14:03:30,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665967010] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:03:30,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803907471] [2023-08-30 14:03:30,655 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 14:03:30,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:03:30,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:03:30,656 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 14:03:30,657 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 14:03:31,288 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 14:03:31,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 14:03:31,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 3534 conjuncts, 211 conjunts are in the unsatisfiable core [2023-08-30 14:03:31,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:03:31,843 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 14:03:31,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:03:58,763 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 14:03:58,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1803907471] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:03:58,764 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:03:58,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [211, 211, 211] total 423 [2023-08-30 14:03:58,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202283277] [2023-08-30 14:03:58,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:03:58,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 424 states [2023-08-30 14:03:58,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:03:58,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 424 interpolants. [2023-08-30 14:03:58,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45155, Invalid=134197, Unknown=0, NotChecked=0, Total=179352 [2023-08-30 14:04:02,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 271 [2023-08-30 14:04:02,958 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 14:04:02,958 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:04:02,958 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 271 [2023-08-30 14:04:02,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:08:53,733 INFO L130 PetriNetUnfolder]: 10968/30090 cut-off events. [2023-08-30 14:08:53,734 INFO L131 PetriNetUnfolder]: For 236427145/236427145 co-relation queries the response was YES. [2023-08-30 14:08:59,334 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 14:08:59,447 INFO L137 encePairwiseOnDemand]: 266/271 looper letters, 7779 selfloop transitions, 1891 changer transitions 1681/11352 dead transitions. [2023-08-30 14:08:59,448 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2613 places, 11352 transitions, 349947 flow [2023-08-30 14:08:59,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 422 states. [2023-08-30 14:08:59,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 422 states. [2023-08-30 14:08:59,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 56636 transitions. [2023-08-30 14:08:59,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.495234431017296 [2023-08-30 14:08:59,491 INFO L72 ComplementDD]: Start complementDD. Operand 422 states and 56636 transitions. [2023-08-30 14:08:59,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 422 states and 56636 transitions. [2023-08-30 14:08:59,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:08:59,667 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 422 states and 56636 transitions. [2023-08-30 14:08:59,712 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 14:08:59,797 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 14:08:59,817 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 14:08:59,818 INFO L175 Difference]: Start difference. First operand has 2192 places, 3351 transitions, 41531 flow. Second operand 422 states and 56636 transitions. [2023-08-30 14:08:59,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 2613 places, 11352 transitions, 349947 flow Killed by 15