./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/pthread-ext/26_stack_cas_longer-2.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread-ext/26_stack_cas_longer-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cb8c1938cc441082517c5681097f5f6483a36107a8ec46d723b101297930909d --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 08:28:31,847 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 08:28:31,849 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 08:28:31,894 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 08:28:31,896 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 08:28:31,899 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 08:28:31,900 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 08:28:31,903 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 08:28:31,905 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 08:28:31,909 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 08:28:31,910 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 08:28:31,913 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 08:28:31,913 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 08:28:31,915 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 08:28:31,916 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 08:28:31,919 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 08:28:31,921 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 08:28:31,922 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 08:28:31,923 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 08:28:31,928 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 08:28:31,936 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 08:28:31,938 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 08:28:31,939 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 08:28:31,940 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 08:28:31,946 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 08:28:31,946 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 08:28:31,947 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 08:28:31,948 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 08:28:31,949 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 08:28:31,949 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 08:28:31,950 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 08:28:31,955 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 08:28:31,956 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 08:28:31,957 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 08:28:31,958 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 08:28:31,958 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 08:28:31,959 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 08:28:31,959 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 08:28:31,959 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 08:28:31,960 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 08:28:31,961 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 08:28:31,962 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 08:28:31,994 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 08:28:31,995 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 08:28:31,996 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 08:28:31,996 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 08:28:31,997 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 08:28:31,997 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 08:28:31,998 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 08:28:31,998 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 08:28:31,998 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 08:28:31,998 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 08:28:31,999 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 08:28:31,999 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 08:28:31,999 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 08:28:32,000 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 08:28:32,000 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 08:28:32,000 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 08:28:32,000 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 08:28:32,000 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 08:28:32,001 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 08:28:32,001 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 08:28:32,001 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 08:28:32,001 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 08:28:32,001 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 08:28:32,001 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 08:28:32,002 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 08:28:32,002 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 08:28:32,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 08:28:32,002 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 08:28:32,002 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 08:28:32,003 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 08:28:32,003 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 08:28:32,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 08:28:32,003 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 08:28:32,004 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 08:28:32,004 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 08:28:32,004 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 08:28:32,004 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 08:28:32,004 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb8c1938cc441082517c5681097f5f6483a36107a8ec46d723b101297930909d Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 08:28:32,320 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 08:28:32,344 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 08:28:32,347 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 08:28:32,348 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 08:28:32,348 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 08:28:32,349 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/26_stack_cas_longer-2.i [2023-08-30 08:28:33,522 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 08:28:33,802 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 08:28:33,803 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/26_stack_cas_longer-2.i [2023-08-30 08:28:33,816 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2067b673/cc95b5b2ed1344e2bfa335184a100ce0/FLAGb51a1e881 [2023-08-30 08:28:34,105 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2067b673/cc95b5b2ed1344e2bfa335184a100ce0 [2023-08-30 08:28:34,107 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 08:28:34,108 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 08:28:34,109 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 08:28:34,109 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 08:28:34,112 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 08:28:34,112 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 08:28:34" (1/1) ... [2023-08-30 08:28:34,113 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43a45ce5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:28:34, skipping insertion in model container [2023-08-30 08:28:34,114 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 08:28:34" (1/1) ... [2023-08-30 08:28:34,119 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 08:28:34,159 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 08:28:34,442 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/26_stack_cas_longer-2.i[31163,31176] [2023-08-30 08:28:34,456 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 08:28:34,470 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 08:28:34,524 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/26_stack_cas_longer-2.i[31163,31176] [2023-08-30 08:28:34,533 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 08:28:34,599 INFO L208 MainTranslator]: Completed translation [2023-08-30 08:28:34,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:28:34 WrapperNode [2023-08-30 08:28:34,600 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 08:28:34,601 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 08:28:34,602 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 08:28:34,602 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 08:28:34,607 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:28:34" (1/1) ... [2023-08-30 08:28:34,634 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:28:34" (1/1) ... [2023-08-30 08:28:34,661 INFO L138 Inliner]: procedures = 177, calls = 47, calls flagged for inlining = 16, calls inlined = 19, statements flattened = 198 [2023-08-30 08:28:34,661 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 08:28:34,662 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 08:28:34,662 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 08:28:34,662 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 08:28:34,670 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:28:34" (1/1) ... [2023-08-30 08:28:34,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:28:34" (1/1) ... [2023-08-30 08:28:34,673 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:28:34" (1/1) ... [2023-08-30 08:28:34,673 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:28:34" (1/1) ... [2023-08-30 08:28:34,679 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:28:34" (1/1) ... [2023-08-30 08:28:34,682 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:28:34" (1/1) ... [2023-08-30 08:28:34,684 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:28:34" (1/1) ... [2023-08-30 08:28:34,686 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:28:34" (1/1) ... [2023-08-30 08:28:34,688 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 08:28:34,689 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 08:28:34,689 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 08:28:34,689 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 08:28:34,690 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:28:34" (1/1) ... [2023-08-30 08:28:34,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 08:28:34,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:28:34,730 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 08:28:34,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 08:28:34,772 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 08:28:34,772 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-30 08:28:34,774 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-30 08:28:34,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 08:28:34,774 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 08:28:34,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 08:28:34,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 08:28:34,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 08:28:34,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 08:28:34,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 08:28:34,777 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 08:28:34,911 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 08:28:34,913 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 08:28:35,180 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 08:28:35,347 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 08:28:35,348 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-30 08:28:35,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 08:28:35 BoogieIcfgContainer [2023-08-30 08:28:35,351 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 08:28:35,352 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 08:28:35,353 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 08:28:35,356 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 08:28:35,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 08:28:34" (1/3) ... [2023-08-30 08:28:35,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a807693 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 08:28:35, skipping insertion in model container [2023-08-30 08:28:35,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:28:34" (2/3) ... [2023-08-30 08:28:35,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a807693 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 08:28:35, skipping insertion in model container [2023-08-30 08:28:35,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 08:28:35" (3/3) ... [2023-08-30 08:28:35,359 INFO L112 eAbstractionObserver]: Analyzing ICFG 26_stack_cas_longer-2.i [2023-08-30 08:28:35,366 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 08:28:35,375 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 08:28:35,375 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-08-30 08:28:35,375 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 08:28:35,469 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 08:28:35,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 126 places, 133 transitions, 271 flow [2023-08-30 08:28:35,604 INFO L130 PetriNetUnfolder]: 11/143 cut-off events. [2023-08-30 08:28:35,604 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 08:28:35,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 143 events. 11/143 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 136 event pairs, 0 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 109. Up to 4 conditions per place. [2023-08-30 08:28:35,610 INFO L82 GeneralOperation]: Start removeDead. Operand has 126 places, 133 transitions, 271 flow [2023-08-30 08:28:35,621 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 126 places, 133 transitions, 271 flow [2023-08-30 08:28:35,624 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 08:28:35,640 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 126 places, 133 transitions, 271 flow [2023-08-30 08:28:35,643 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 126 places, 133 transitions, 271 flow [2023-08-30 08:28:35,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 126 places, 133 transitions, 271 flow [2023-08-30 08:28:35,673 INFO L130 PetriNetUnfolder]: 11/143 cut-off events. [2023-08-30 08:28:35,673 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 08:28:35,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 143 events. 11/143 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 136 event pairs, 0 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 109. Up to 4 conditions per place. [2023-08-30 08:28:35,676 INFO L119 LiptonReduction]: Number of co-enabled transitions 2522 [2023-08-30 08:28:40,506 INFO L134 LiptonReduction]: Checked pairs total: 3076 [2023-08-30 08:28:40,507 INFO L136 LiptonReduction]: Total number of compositions: 136 [2023-08-30 08:28:40,525 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 08:28:40,534 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;@4686841f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 08:28:40,535 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-08-30 08:28:40,542 INFO L130 PetriNetUnfolder]: 2/16 cut-off events. [2023-08-30 08:28:40,543 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 08:28:40,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:28:40,544 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:28:40,545 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 08:28:40,549 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:28:40,550 INFO L85 PathProgramCache]: Analyzing trace with hash 288098820, now seen corresponding path program 1 times [2023-08-30 08:28:40,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:28:40,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593178453] [2023-08-30 08:28:40,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:28:40,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:28:40,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:28:40,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:28:40,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:28:40,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593178453] [2023-08-30 08:28:40,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593178453] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:28:40,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:28:40,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:28:40,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080050841] [2023-08-30 08:28:40,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:28:40,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:28:40,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:28:40,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:28:40,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:28:40,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 269 [2023-08-30 08:28:40,878 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 38 transitions, 81 flow. Second operand has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:40,879 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:28:40,879 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 269 [2023-08-30 08:28:40,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:28:40,984 INFO L130 PetriNetUnfolder]: 52/119 cut-off events. [2023-08-30 08:28:40,985 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 08:28:40,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 243 conditions, 119 events. 52/119 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 301 event pairs, 2 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 228. Up to 108 conditions per place. [2023-08-30 08:28:40,990 INFO L137 encePairwiseOnDemand]: 258/269 looper letters, 27 selfloop transitions, 2 changer transitions 1/31 dead transitions. [2023-08-30 08:28:40,990 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 31 transitions, 127 flow [2023-08-30 08:28:40,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:28:40,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:28:41,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 391 transitions. [2023-08-30 08:28:41,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48451053283767037 [2023-08-30 08:28:41,012 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 391 transitions. [2023-08-30 08:28:41,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 391 transitions. [2023-08-30 08:28:41,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:28:41,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 391 transitions. [2023-08-30 08:28:41,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:41,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:41,030 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:41,032 INFO L175 Difference]: Start difference. First operand has 34 places, 38 transitions, 81 flow. Second operand 3 states and 391 transitions. [2023-08-30 08:28:41,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 31 transitions, 127 flow [2023-08-30 08:28:41,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 31 transitions, 127 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 08:28:41,036 INFO L231 Difference]: Finished difference. Result has 30 places, 28 transitions, 65 flow [2023-08-30 08:28:41,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=65, PETRI_PLACES=30, PETRI_TRANSITIONS=28} [2023-08-30 08:28:41,042 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -4 predicate places. [2023-08-30 08:28:41,042 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 28 transitions, 65 flow [2023-08-30 08:28:41,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:41,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:28:41,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:28:41,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 08:28:41,043 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 08:28:41,045 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:28:41,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1508206433, now seen corresponding path program 1 times [2023-08-30 08:28:41,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:28:41,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777466545] [2023-08-30 08:28:41,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:28:41,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:28:41,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:28:41,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:28:41,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:28:41,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777466545] [2023-08-30 08:28:41,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777466545] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:28:41,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:28:41,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 08:28:41,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674803055] [2023-08-30 08:28:41,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:28:41,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:28:41,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:28:41,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:28:41,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:28:41,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 269 [2023-08-30 08:28:41,253 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 28 transitions, 65 flow. Second operand has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:41,254 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:28:41,254 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 269 [2023-08-30 08:28:41,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:28:41,345 INFO L130 PetriNetUnfolder]: 58/134 cut-off events. [2023-08-30 08:28:41,346 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 08:28:41,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 278 conditions, 134 events. 58/134 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 350 event pairs, 12 based on Foata normal form. 3/110 useless extension candidates. Maximal degree in co-relation 261. Up to 98 conditions per place. [2023-08-30 08:28:41,349 INFO L137 encePairwiseOnDemand]: 263/269 looper letters, 30 selfloop transitions, 2 changer transitions 1/34 dead transitions. [2023-08-30 08:28:41,349 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 34 transitions, 143 flow [2023-08-30 08:28:41,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:28:41,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:28:41,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 367 transitions. [2023-08-30 08:28:41,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4547707558859975 [2023-08-30 08:28:41,351 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 367 transitions. [2023-08-30 08:28:41,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 367 transitions. [2023-08-30 08:28:41,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:28:41,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 367 transitions. [2023-08-30 08:28:41,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:41,355 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:41,356 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:41,356 INFO L175 Difference]: Start difference. First operand has 30 places, 28 transitions, 65 flow. Second operand 3 states and 367 transitions. [2023-08-30 08:28:41,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 34 transitions, 143 flow [2023-08-30 08:28:41,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 34 transitions, 139 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 08:28:41,358 INFO L231 Difference]: Finished difference. Result has 30 places, 29 transitions, 79 flow [2023-08-30 08:28:41,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=61, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=79, PETRI_PLACES=30, PETRI_TRANSITIONS=29} [2023-08-30 08:28:41,359 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -4 predicate places. [2023-08-30 08:28:41,359 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 29 transitions, 79 flow [2023-08-30 08:28:41,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:41,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:28:41,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:28:41,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 08:28:41,360 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 08:28:41,362 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:28:41,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1328372441, now seen corresponding path program 1 times [2023-08-30 08:28:41,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:28:41,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702344386] [2023-08-30 08:28:41,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:28:41,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:28:41,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:28:41,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:28:41,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:28:41,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702344386] [2023-08-30 08:28:41,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702344386] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:28:41,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:28:41,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 08:28:41,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992147380] [2023-08-30 08:28:41,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:28:41,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 08:28:41,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:28:41,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 08:28:41,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-30 08:28:41,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 269 [2023-08-30 08:28:41,620 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 29 transitions, 79 flow. Second operand has 6 states, 6 states have (on average 98.0) internal successors, (588), 6 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:41,621 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:28:41,621 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 269 [2023-08-30 08:28:41,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:28:41,776 INFO L130 PetriNetUnfolder]: 81/187 cut-off events. [2023-08-30 08:28:41,777 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 08:28:41,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 403 conditions, 187 events. 81/187 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 439 event pairs, 12 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 385. Up to 93 conditions per place. [2023-08-30 08:28:41,781 INFO L137 encePairwiseOnDemand]: 260/269 looper letters, 44 selfloop transitions, 7 changer transitions 1/53 dead transitions. [2023-08-30 08:28:41,781 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 53 transitions, 231 flow [2023-08-30 08:28:41,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 08:28:41,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 08:28:41,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 726 transitions. [2023-08-30 08:28:41,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.385554965480616 [2023-08-30 08:28:41,784 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 726 transitions. [2023-08-30 08:28:41,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 726 transitions. [2023-08-30 08:28:41,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:28:41,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 726 transitions. [2023-08-30 08:28:41,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 103.71428571428571) internal successors, (726), 7 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:41,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 269.0) internal successors, (2152), 8 states have internal predecessors, (2152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:41,790 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 269.0) internal successors, (2152), 8 states have internal predecessors, (2152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:41,790 INFO L175 Difference]: Start difference. First operand has 30 places, 29 transitions, 79 flow. Second operand 7 states and 726 transitions. [2023-08-30 08:28:41,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 53 transitions, 231 flow [2023-08-30 08:28:41,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 53 transitions, 229 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:28:41,793 INFO L231 Difference]: Finished difference. Result has 39 places, 34 transitions, 126 flow [2023-08-30 08:28:41,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=126, PETRI_PLACES=39, PETRI_TRANSITIONS=34} [2023-08-30 08:28:41,795 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 5 predicate places. [2023-08-30 08:28:41,795 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 34 transitions, 126 flow [2023-08-30 08:28:41,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 98.0) internal successors, (588), 6 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:41,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:28:41,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:28:41,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 08:28:41,796 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 08:28:41,797 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:28:41,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1328372440, now seen corresponding path program 1 times [2023-08-30 08:28:41,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:28:41,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799085524] [2023-08-30 08:28:41,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:28:41,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:28:41,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:28:41,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:28:41,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:28:41,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799085524] [2023-08-30 08:28:41,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799085524] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:28:41,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:28:41,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 08:28:41,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333981352] [2023-08-30 08:28:41,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:28:41,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 08:28:41,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:28:41,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 08:28:41,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-30 08:28:42,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 269 [2023-08-30 08:28:42,047 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 34 transitions, 126 flow. Second operand has 6 states, 6 states have (on average 98.0) internal successors, (588), 6 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:42,047 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:28:42,047 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 269 [2023-08-30 08:28:42,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:28:42,168 INFO L130 PetriNetUnfolder]: 81/187 cut-off events. [2023-08-30 08:28:42,169 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 08:28:42,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 465 conditions, 187 events. 81/187 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 427 event pairs, 6 based on Foata normal form. 3/172 useless extension candidates. Maximal degree in co-relation 442. Up to 64 conditions per place. [2023-08-30 08:28:42,170 INFO L137 encePairwiseOnDemand]: 261/269 looper letters, 42 selfloop transitions, 9 changer transitions 1/53 dead transitions. [2023-08-30 08:28:42,170 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 53 transitions, 272 flow [2023-08-30 08:28:42,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 08:28:42,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 08:28:42,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 725 transitions. [2023-08-30 08:28:42,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38502389803505044 [2023-08-30 08:28:42,173 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 725 transitions. [2023-08-30 08:28:42,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 725 transitions. [2023-08-30 08:28:42,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:28:42,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 725 transitions. [2023-08-30 08:28:42,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 103.57142857142857) internal successors, (725), 7 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:42,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 269.0) internal successors, (2152), 8 states have internal predecessors, (2152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:42,180 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 269.0) internal successors, (2152), 8 states have internal predecessors, (2152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:42,180 INFO L175 Difference]: Start difference. First operand has 39 places, 34 transitions, 126 flow. Second operand 7 states and 725 transitions. [2023-08-30 08:28:42,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 53 transitions, 272 flow [2023-08-30 08:28:42,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 53 transitions, 267 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 08:28:42,182 INFO L231 Difference]: Finished difference. Result has 43 places, 35 transitions, 145 flow [2023-08-30 08:28:42,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=145, PETRI_PLACES=43, PETRI_TRANSITIONS=35} [2023-08-30 08:28:42,183 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 9 predicate places. [2023-08-30 08:28:42,183 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 35 transitions, 145 flow [2023-08-30 08:28:42,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 98.0) internal successors, (588), 6 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:42,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:28:42,184 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 08:28:42,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 08:28:42,185 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 08:28:42,185 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:28:42,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1980265492, now seen corresponding path program 1 times [2023-08-30 08:28:42,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:28:42,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291511857] [2023-08-30 08:28:42,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:28:42,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:28:42,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:28:42,255 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 08:28:42,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:28:42,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291511857] [2023-08-30 08:28:42,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291511857] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:28:42,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696405205] [2023-08-30 08:28:42,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:28:42,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:28:42,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:28:42,265 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:28:42,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 08:28:42,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:28:42,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 08:28:42,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:28:42,463 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 08:28:42,463 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 08:28:42,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696405205] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:28:42,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 08:28:42,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-30 08:28:42,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316477795] [2023-08-30 08:28:42,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:28:42,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 08:28:42,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:28:42,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 08:28:42,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 08:28:42,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 269 [2023-08-30 08:28:42,516 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 35 transitions, 145 flow. Second operand has 4 states, 4 states have (on average 114.75) internal successors, (459), 4 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:42,516 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:28:42,516 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 269 [2023-08-30 08:28:42,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:28:42,638 INFO L130 PetriNetUnfolder]: 77/177 cut-off events. [2023-08-30 08:28:42,639 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-08-30 08:28:42,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 463 conditions, 177 events. 77/177 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 382 event pairs, 12 based on Foata normal form. 0/168 useless extension candidates. Maximal degree in co-relation 440. Up to 140 conditions per place. [2023-08-30 08:28:42,640 INFO L137 encePairwiseOnDemand]: 265/269 looper letters, 33 selfloop transitions, 2 changer transitions 1/37 dead transitions. [2023-08-30 08:28:42,640 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 37 transitions, 219 flow [2023-08-30 08:28:42,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 08:28:42,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 08:28:42,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 473 transitions. [2023-08-30 08:28:42,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4395910780669145 [2023-08-30 08:28:42,642 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 473 transitions. [2023-08-30 08:28:42,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 473 transitions. [2023-08-30 08:28:42,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:28:42,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 473 transitions. [2023-08-30 08:28:42,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 118.25) internal successors, (473), 4 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:42,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 269.0) internal successors, (1345), 5 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:42,646 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 269.0) internal successors, (1345), 5 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:42,646 INFO L175 Difference]: Start difference. First operand has 43 places, 35 transitions, 145 flow. Second operand 4 states and 473 transitions. [2023-08-30 08:28:42,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 37 transitions, 219 flow [2023-08-30 08:28:42,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 37 transitions, 201 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-08-30 08:28:42,649 INFO L231 Difference]: Finished difference. Result has 40 places, 33 transitions, 123 flow [2023-08-30 08:28:42,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=123, PETRI_PLACES=40, PETRI_TRANSITIONS=33} [2023-08-30 08:28:42,650 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 6 predicate places. [2023-08-30 08:28:42,650 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 33 transitions, 123 flow [2023-08-30 08:28:42,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 114.75) internal successors, (459), 4 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:42,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:28:42,651 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 08:28:42,661 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-30 08:28:42,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:28:42,857 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 08:28:42,857 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:28:42,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1980265468, now seen corresponding path program 1 times [2023-08-30 08:28:42,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:28:42,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010096655] [2023-08-30 08:28:42,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:28:42,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:28:42,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:28:42,939 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 08:28:42,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:28:42,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010096655] [2023-08-30 08:28:42,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010096655] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:28:42,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008606663] [2023-08-30 08:28:42,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:28:42,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:28:42,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:28:42,942 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:28:42,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 08:28:43,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:28:43,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 08:28:43,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:28:43,107 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 08:28:43,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:28:43,153 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 08:28:43,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008606663] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:28:43,153 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:28:43,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 08:28:43,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651293499] [2023-08-30 08:28:43,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:28:43,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 08:28:43,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:28:43,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 08:28:43,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 08:28:43,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 269 [2023-08-30 08:28:43,202 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 33 transitions, 123 flow. Second operand has 7 states, 7 states have (on average 113.71428571428571) internal successors, (796), 7 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:43,202 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:28:43,202 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 269 [2023-08-30 08:28:43,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:28:43,297 INFO L130 PetriNetUnfolder]: 79/182 cut-off events. [2023-08-30 08:28:43,298 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2023-08-30 08:28:43,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 452 conditions, 182 events. 79/182 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 406 event pairs, 12 based on Foata normal form. 3/179 useless extension candidates. Maximal degree in co-relation 429. Up to 87 conditions per place. [2023-08-30 08:28:43,299 INFO L137 encePairwiseOnDemand]: 265/269 looper letters, 40 selfloop transitions, 3 changer transitions 2/46 dead transitions. [2023-08-30 08:28:43,299 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 46 transitions, 241 flow [2023-08-30 08:28:43,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 08:28:43,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 08:28:43,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 582 transitions. [2023-08-30 08:28:43,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43271375464684014 [2023-08-30 08:28:43,302 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 582 transitions. [2023-08-30 08:28:43,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 582 transitions. [2023-08-30 08:28:43,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:28:43,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 582 transitions. [2023-08-30 08:28:43,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 116.4) internal successors, (582), 5 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:43,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:43,306 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:43,306 INFO L175 Difference]: Start difference. First operand has 40 places, 33 transitions, 123 flow. Second operand 5 states and 582 transitions. [2023-08-30 08:28:43,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 46 transitions, 241 flow [2023-08-30 08:28:43,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 46 transitions, 238 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 08:28:43,308 INFO L231 Difference]: Finished difference. Result has 42 places, 33 transitions, 132 flow [2023-08-30 08:28:43,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=132, PETRI_PLACES=42, PETRI_TRANSITIONS=33} [2023-08-30 08:28:43,309 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 8 predicate places. [2023-08-30 08:28:43,309 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 33 transitions, 132 flow [2023-08-30 08:28:43,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 113.71428571428571) internal successors, (796), 7 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:43,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:28:43,310 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:28:43,319 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 08:28:43,516 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,SelfDestructingSolverStorable5 [2023-08-30 08:28:43,517 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 08:28:43,517 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:28:43,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1584916078, now seen corresponding path program 1 times [2023-08-30 08:28:43,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:28:43,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985811503] [2023-08-30 08:28:43,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:28:43,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:28:43,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:28:43,596 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-30 08:28:43,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:28:43,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985811503] [2023-08-30 08:28:43,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985811503] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:28:43,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:28:43,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:28:43,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144062400] [2023-08-30 08:28:43,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:28:43,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:28:43,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:28:43,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:28:43,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:28:43,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 269 [2023-08-30 08:28:43,616 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 33 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:43,616 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:28:43,617 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 269 [2023-08-30 08:28:43,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:28:43,671 INFO L130 PetriNetUnfolder]: 77/177 cut-off events. [2023-08-30 08:28:43,672 INFO L131 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2023-08-30 08:28:43,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 455 conditions, 177 events. 77/177 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 377 event pairs, 6 based on Foata normal form. 3/174 useless extension candidates. Maximal degree in co-relation 431. Up to 155 conditions per place. [2023-08-30 08:28:43,673 INFO L137 encePairwiseOnDemand]: 267/269 looper letters, 32 selfloop transitions, 1 changer transitions 0/34 dead transitions. [2023-08-30 08:28:43,674 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 34 transitions, 198 flow [2023-08-30 08:28:43,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:28:43,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:28:43,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 357 transitions. [2023-08-30 08:28:43,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4423791821561338 [2023-08-30 08:28:43,676 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 357 transitions. [2023-08-30 08:28:43,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 357 transitions. [2023-08-30 08:28:43,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:28:43,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 357 transitions. [2023-08-30 08:28:43,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:43,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:43,679 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:43,679 INFO L175 Difference]: Start difference. First operand has 42 places, 33 transitions, 132 flow. Second operand 3 states and 357 transitions. [2023-08-30 08:28:43,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 34 transitions, 198 flow [2023-08-30 08:28:43,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 34 transitions, 193 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-30 08:28:43,683 INFO L231 Difference]: Finished difference. Result has 41 places, 32 transitions, 125 flow [2023-08-30 08:28:43,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=125, PETRI_PLACES=41, PETRI_TRANSITIONS=32} [2023-08-30 08:28:43,684 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 7 predicate places. [2023-08-30 08:28:43,684 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 32 transitions, 125 flow [2023-08-30 08:28:43,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:43,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:28:43,684 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:28:43,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 08:28:43,685 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 08:28:43,685 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:28:43,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1584916077, now seen corresponding path program 1 times [2023-08-30 08:28:43,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:28:43,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941799197] [2023-08-30 08:28:43,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:28:43,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:28:43,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:28:43,858 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:28:43,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:28:43,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941799197] [2023-08-30 08:28:43,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941799197] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:28:43,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534796125] [2023-08-30 08:28:43,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:28:43,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:28:43,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:28:43,861 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:28:43,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 08:28:43,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:28:44,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 08:28:44,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:28:44,049 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:28:44,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:28:44,115 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:28:44,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534796125] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:28:44,118 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:28:44,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-08-30 08:28:44,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439975711] [2023-08-30 08:28:44,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:28:44,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 08:28:44,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:28:44,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 08:28:44,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-08-30 08:28:44,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 269 [2023-08-30 08:28:44,278 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 32 transitions, 125 flow. Second operand has 13 states, 13 states have (on average 95.07692307692308) internal successors, (1236), 13 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:44,278 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:28:44,278 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 269 [2023-08-30 08:28:44,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:28:44,508 INFO L130 PetriNetUnfolder]: 103/233 cut-off events. [2023-08-30 08:28:44,508 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2023-08-30 08:28:44,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 584 conditions, 233 events. 103/233 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 527 event pairs, 6 based on Foata normal form. 6/230 useless extension candidates. Maximal degree in co-relation 561. Up to 69 conditions per place. [2023-08-30 08:28:44,509 INFO L137 encePairwiseOnDemand]: 260/269 looper letters, 0 selfloop transitions, 0 changer transitions 71/71 dead transitions. [2023-08-30 08:28:44,509 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 71 transitions, 357 flow [2023-08-30 08:28:44,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 08:28:44,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 08:28:44,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1163 transitions. [2023-08-30 08:28:44,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36028500619578685 [2023-08-30 08:28:44,513 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1163 transitions. [2023-08-30 08:28:44,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1163 transitions. [2023-08-30 08:28:44,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:28:44,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1163 transitions. [2023-08-30 08:28:44,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 96.91666666666667) internal successors, (1163), 12 states have internal predecessors, (1163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:44,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 269.0) internal successors, (3497), 13 states have internal predecessors, (3497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:44,522 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 269.0) internal successors, (3497), 13 states have internal predecessors, (3497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:44,522 INFO L175 Difference]: Start difference. First operand has 41 places, 32 transitions, 125 flow. Second operand 12 states and 1163 transitions. [2023-08-30 08:28:44,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 71 transitions, 357 flow [2023-08-30 08:28:44,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 71 transitions, 354 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 08:28:44,526 INFO L231 Difference]: Finished difference. Result has 48 places, 0 transitions, 0 flow [2023-08-30 08:28:44,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=48, PETRI_TRANSITIONS=0} [2023-08-30 08:28:44,529 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 14 predicate places. [2023-08-30 08:28:44,529 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 0 transitions, 0 flow [2023-08-30 08:28:44,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 95.07692307692308) internal successors, (1236), 13 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:44,533 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 20 remaining) [2023-08-30 08:28:44,534 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 20 remaining) [2023-08-30 08:28:44,534 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 20 remaining) [2023-08-30 08:28:44,534 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 20 remaining) [2023-08-30 08:28:44,534 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 20 remaining) [2023-08-30 08:28:44,534 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 20 remaining) [2023-08-30 08:28:44,534 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 20 remaining) [2023-08-30 08:28:44,535 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 20 remaining) [2023-08-30 08:28:44,535 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 20 remaining) [2023-08-30 08:28:44,535 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 20 remaining) [2023-08-30 08:28:44,535 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 20 remaining) [2023-08-30 08:28:44,535 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 20 remaining) [2023-08-30 08:28:44,535 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 20 remaining) [2023-08-30 08:28:44,536 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 20 remaining) [2023-08-30 08:28:44,537 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 20 remaining) [2023-08-30 08:28:44,537 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 20 remaining) [2023-08-30 08:28:44,537 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 20 remaining) [2023-08-30 08:28:44,537 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 20 remaining) [2023-08-30 08:28:44,537 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 20 remaining) [2023-08-30 08:28:44,538 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 20 remaining) [2023-08-30 08:28:44,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 08:28:44,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:28:44,745 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:28:44,747 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-30 08:28:44,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 126 places, 133 transitions, 271 flow [2023-08-30 08:28:44,763 INFO L130 PetriNetUnfolder]: 11/143 cut-off events. [2023-08-30 08:28:44,764 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 08:28:44,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 143 events. 11/143 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 136 event pairs, 0 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 109. Up to 4 conditions per place. [2023-08-30 08:28:44,764 INFO L82 GeneralOperation]: Start removeDead. Operand has 126 places, 133 transitions, 271 flow [2023-08-30 08:28:44,765 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 126 places, 133 transitions, 271 flow [2023-08-30 08:28:44,766 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 08:28:44,766 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 126 places, 133 transitions, 271 flow [2023-08-30 08:28:44,766 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 126 places, 133 transitions, 271 flow [2023-08-30 08:28:44,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 126 places, 133 transitions, 271 flow [2023-08-30 08:28:44,776 INFO L130 PetriNetUnfolder]: 11/143 cut-off events. [2023-08-30 08:28:44,776 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 08:28:44,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 143 events. 11/143 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 136 event pairs, 0 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 109. Up to 4 conditions per place. [2023-08-30 08:28:44,778 INFO L119 LiptonReduction]: Number of co-enabled transitions 2522 [2023-08-30 08:28:48,914 INFO L134 LiptonReduction]: Checked pairs total: 2879 [2023-08-30 08:28:48,915 INFO L136 LiptonReduction]: Total number of compositions: 136 [2023-08-30 08:28:48,916 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-30 08:28:48,916 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;@4686841f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 08:28:48,917 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-30 08:28:48,918 INFO L130 PetriNetUnfolder]: 2/13 cut-off events. [2023-08-30 08:28:48,919 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 08:28:48,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:28:48,919 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-30 08:28:48,919 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 08:28:48,919 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:28:48,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1827183085, now seen corresponding path program 1 times [2023-08-30 08:28:48,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:28:48,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837957472] [2023-08-30 08:28:48,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:28:48,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:28:48,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 08:28:48,932 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 08:28:48,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 08:28:48,958 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 08:28:48,959 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 08:28:48,959 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-30 08:28:48,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 08:28:48,959 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-30 08:28:48,960 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-30 08:28:48,961 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 08:28:48,961 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-30 08:28:49,002 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 08:28:49,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 217 places, 231 transitions, 474 flow [2023-08-30 08:28:49,042 INFO L130 PetriNetUnfolder]: 21/253 cut-off events. [2023-08-30 08:28:49,043 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 08:28:49,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 253 events. 21/253 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 535 event pairs, 0 based on Foata normal form. 0/209 useless extension candidates. Maximal degree in co-relation 206. Up to 6 conditions per place. [2023-08-30 08:28:49,044 INFO L82 GeneralOperation]: Start removeDead. Operand has 217 places, 231 transitions, 474 flow [2023-08-30 08:28:49,047 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 217 places, 231 transitions, 474 flow [2023-08-30 08:28:49,047 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 08:28:49,047 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 217 places, 231 transitions, 474 flow [2023-08-30 08:28:49,047 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 217 places, 231 transitions, 474 flow [2023-08-30 08:28:49,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 217 places, 231 transitions, 474 flow [2023-08-30 08:28:49,074 INFO L130 PetriNetUnfolder]: 21/253 cut-off events. [2023-08-30 08:28:49,074 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 08:28:49,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 253 events. 21/253 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 535 event pairs, 0 based on Foata normal form. 0/209 useless extension candidates. Maximal degree in co-relation 206. Up to 6 conditions per place. [2023-08-30 08:28:49,085 INFO L119 LiptonReduction]: Number of co-enabled transitions 24056 [2023-08-30 08:28:53,721 INFO L134 LiptonReduction]: Checked pairs total: 72746 [2023-08-30 08:28:53,722 INFO L136 LiptonReduction]: Total number of compositions: 179 [2023-08-30 08:28:53,723 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 08:28:53,723 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;@4686841f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 08:28:53,724 INFO L358 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2023-08-30 08:28:53,727 INFO L130 PetriNetUnfolder]: 4/35 cut-off events. [2023-08-30 08:28:53,727 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 08:28:53,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:28:53,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:28:53,728 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:28:53,728 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:28:53,728 INFO L85 PathProgramCache]: Analyzing trace with hash -104723753, now seen corresponding path program 1 times [2023-08-30 08:28:53,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:28:53,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146682004] [2023-08-30 08:28:53,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:28:53,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:28:53,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:28:53,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:28:53,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:28:53,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146682004] [2023-08-30 08:28:53,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146682004] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:28:53,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:28:53,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 08:28:53,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786296119] [2023-08-30 08:28:53,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:28:53,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 08:28:53,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:28:53,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 08:28:53,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 08:28:53,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 410 [2023-08-30 08:28:53,790 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 100 transitions, 212 flow. Second operand has 4 states, 4 states have (on average 198.5) internal successors, (794), 4 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:53,790 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:28:53,791 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 410 [2023-08-30 08:28:53,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:28:54,282 INFO L130 PetriNetUnfolder]: 1931/3617 cut-off events. [2023-08-30 08:28:54,282 INFO L131 PetriNetUnfolder]: For 63/63 co-relation queries the response was YES. [2023-08-30 08:28:54,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6689 conditions, 3617 events. 1931/3617 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 23884 event pairs, 689 based on Foata normal form. 0/2596 useless extension candidates. Maximal degree in co-relation 6132. Up to 2397 conditions per place. [2023-08-30 08:28:54,303 INFO L137 encePairwiseOnDemand]: 395/410 looper letters, 105 selfloop transitions, 8 changer transitions 0/151 dead transitions. [2023-08-30 08:28:54,303 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 151 transitions, 550 flow [2023-08-30 08:28:54,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 08:28:54,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 08:28:54,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1111 transitions. [2023-08-30 08:28:54,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5419512195121952 [2023-08-30 08:28:54,307 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1111 transitions. [2023-08-30 08:28:54,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1111 transitions. [2023-08-30 08:28:54,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:28:54,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1111 transitions. [2023-08-30 08:28:54,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 222.2) internal successors, (1111), 5 states have internal predecessors, (1111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:54,312 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 410.0) internal successors, (2460), 6 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:54,313 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 410.0) internal successors, (2460), 6 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:54,313 INFO L175 Difference]: Start difference. First operand has 91 places, 100 transitions, 212 flow. Second operand 5 states and 1111 transitions. [2023-08-30 08:28:54,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 151 transitions, 550 flow [2023-08-30 08:28:54,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 151 transitions, 548 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-30 08:28:54,317 INFO L231 Difference]: Finished difference. Result has 96 places, 100 transitions, 266 flow [2023-08-30 08:28:54,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=266, PETRI_PLACES=96, PETRI_TRANSITIONS=100} [2023-08-30 08:28:54,318 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 5 predicate places. [2023-08-30 08:28:54,318 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 100 transitions, 266 flow [2023-08-30 08:28:54,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 198.5) internal successors, (794), 4 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:54,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:28:54,320 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:28:54,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 08:28:54,320 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:28:54,321 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:28:54,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1121630105, now seen corresponding path program 1 times [2023-08-30 08:28:54,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:28:54,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974228146] [2023-08-30 08:28:54,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:28:54,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:28:54,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:28:54,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:28:54,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:28:54,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974228146] [2023-08-30 08:28:54,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974228146] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:28:54,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:28:54,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 08:28:54,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883472450] [2023-08-30 08:28:54,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:28:54,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:28:54,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:28:54,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:28:54,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:28:54,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 410 [2023-08-30 08:28:54,396 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 100 transitions, 266 flow. Second operand has 3 states, 3 states have (on average 193.33333333333334) internal successors, (580), 3 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:54,396 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:28:54,396 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 410 [2023-08-30 08:28:54,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:28:54,877 INFO L130 PetriNetUnfolder]: 2391/4277 cut-off events. [2023-08-30 08:28:54,877 INFO L131 PetriNetUnfolder]: For 925/935 co-relation queries the response was YES. [2023-08-30 08:28:54,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8829 conditions, 4277 events. 2391/4277 cut-off events. For 925/935 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 29528 event pairs, 1859 based on Foata normal form. 302/3767 useless extension candidates. Maximal degree in co-relation 6144. Up to 3787 conditions per place. [2023-08-30 08:28:54,902 INFO L137 encePairwiseOnDemand]: 403/410 looper letters, 62 selfloop transitions, 1 changer transitions 0/94 dead transitions. [2023-08-30 08:28:54,902 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 94 transitions, 380 flow [2023-08-30 08:28:54,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:28:54,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:28:54,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 636 transitions. [2023-08-30 08:28:54,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5170731707317073 [2023-08-30 08:28:54,904 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 636 transitions. [2023-08-30 08:28:54,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 636 transitions. [2023-08-30 08:28:54,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:28:54,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 636 transitions. [2023-08-30 08:28:54,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 212.0) internal successors, (636), 3 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:54,908 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:54,908 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:54,908 INFO L175 Difference]: Start difference. First operand has 96 places, 100 transitions, 266 flow. Second operand 3 states and 636 transitions. [2023-08-30 08:28:54,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 94 transitions, 380 flow [2023-08-30 08:28:54,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 94 transitions, 380 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 08:28:54,913 INFO L231 Difference]: Finished difference. Result has 92 places, 94 transitions, 256 flow [2023-08-30 08:28:54,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=256, PETRI_PLACES=92, PETRI_TRANSITIONS=94} [2023-08-30 08:28:54,914 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 1 predicate places. [2023-08-30 08:28:54,914 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 94 transitions, 256 flow [2023-08-30 08:28:54,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 193.33333333333334) internal successors, (580), 3 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:54,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:28:54,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:28:54,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 08:28:54,915 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:28:54,916 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:28:54,916 INFO L85 PathProgramCache]: Analyzing trace with hash -410793662, now seen corresponding path program 1 times [2023-08-30 08:28:54,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:28:54,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264765938] [2023-08-30 08:28:54,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:28:54,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:28:54,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:28:54,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:28:54,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:28:54,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264765938] [2023-08-30 08:28:54,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264765938] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:28:54,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:28:54,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 08:28:54,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333989327] [2023-08-30 08:28:54,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:28:54,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:28:54,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:28:54,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:28:54,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:28:55,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 410 [2023-08-30 08:28:55,005 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 94 transitions, 256 flow. Second operand has 3 states, 3 states have (on average 191.33333333333334) internal successors, (574), 3 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:55,005 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:28:55,005 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 410 [2023-08-30 08:28:55,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:28:55,591 INFO L130 PetriNetUnfolder]: 2769/5103 cut-off events. [2023-08-30 08:28:55,591 INFO L131 PetriNetUnfolder]: For 1140/1150 co-relation queries the response was YES. [2023-08-30 08:28:55,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10444 conditions, 5103 events. 2769/5103 cut-off events. For 1140/1150 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 36391 event pairs, 755 based on Foata normal form. 170/4507 useless extension candidates. Maximal degree in co-relation 10430. Up to 3993 conditions per place. [2023-08-30 08:28:55,621 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 84 selfloop transitions, 3 changer transitions 0/116 dead transitions. [2023-08-30 08:28:55,622 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 116 transitions, 507 flow [2023-08-30 08:28:55,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:28:55,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:28:55,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 654 transitions. [2023-08-30 08:28:55,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5317073170731708 [2023-08-30 08:28:55,624 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 654 transitions. [2023-08-30 08:28:55,624 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 654 transitions. [2023-08-30 08:28:55,625 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:28:55,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 654 transitions. [2023-08-30 08:28:55,626 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 218.0) internal successors, (654), 3 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:55,628 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:55,629 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:55,629 INFO L175 Difference]: Start difference. First operand has 92 places, 94 transitions, 256 flow. Second operand 3 states and 654 transitions. [2023-08-30 08:28:55,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 116 transitions, 507 flow [2023-08-30 08:28:55,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 116 transitions, 506 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:28:55,632 INFO L231 Difference]: Finished difference. Result has 94 places, 96 transitions, 288 flow [2023-08-30 08:28:55,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=288, PETRI_PLACES=94, PETRI_TRANSITIONS=96} [2023-08-30 08:28:55,632 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 3 predicate places. [2023-08-30 08:28:55,633 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 96 transitions, 288 flow [2023-08-30 08:28:55,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 191.33333333333334) internal successors, (574), 3 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:55,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:28:55,633 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:28:55,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 08:28:55,634 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:28:55,634 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:28:55,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1240478144, now seen corresponding path program 1 times [2023-08-30 08:28:55,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:28:55,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168281317] [2023-08-30 08:28:55,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:28:55,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:28:55,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:28:55,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:28:55,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:28:55,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168281317] [2023-08-30 08:28:55,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168281317] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:28:55,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:28:55,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:28:55,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417412606] [2023-08-30 08:28:55,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:28:55,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:28:55,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:28:55,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:28:55,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:28:55,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 410 [2023-08-30 08:28:55,678 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 96 transitions, 288 flow. Second operand has 3 states, 3 states have (on average 204.66666666666666) internal successors, (614), 3 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:55,678 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:28:55,678 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 410 [2023-08-30 08:28:55,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:28:56,168 INFO L130 PetriNetUnfolder]: 2080/4294 cut-off events. [2023-08-30 08:28:56,169 INFO L131 PetriNetUnfolder]: For 910/920 co-relation queries the response was YES. [2023-08-30 08:28:56,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8668 conditions, 4294 events. 2080/4294 cut-off events. For 910/920 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 31085 event pairs, 1449 based on Foata normal form. 10/3598 useless extension candidates. Maximal degree in co-relation 8652. Up to 3022 conditions per place. [2023-08-30 08:28:56,200 INFO L137 encePairwiseOnDemand]: 404/410 looper letters, 75 selfloop transitions, 5 changer transitions 0/121 dead transitions. [2023-08-30 08:28:56,201 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 121 transitions, 511 flow [2023-08-30 08:28:56,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:28:56,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:28:56,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 681 transitions. [2023-08-30 08:28:56,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5536585365853659 [2023-08-30 08:28:56,204 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 681 transitions. [2023-08-30 08:28:56,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 681 transitions. [2023-08-30 08:28:56,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:28:56,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 681 transitions. [2023-08-30 08:28:56,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.0) internal successors, (681), 3 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:56,208 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:56,209 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:56,209 INFO L175 Difference]: Start difference. First operand has 94 places, 96 transitions, 288 flow. Second operand 3 states and 681 transitions. [2023-08-30 08:28:56,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 121 transitions, 511 flow [2023-08-30 08:28:56,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 121 transitions, 508 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:28:56,212 INFO L231 Difference]: Finished difference. Result has 94 places, 95 transitions, 293 flow [2023-08-30 08:28:56,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=293, PETRI_PLACES=94, PETRI_TRANSITIONS=95} [2023-08-30 08:28:56,213 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 3 predicate places. [2023-08-30 08:28:56,214 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 95 transitions, 293 flow [2023-08-30 08:28:56,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 204.66666666666666) internal successors, (614), 3 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:56,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:28:56,214 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:28:56,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 08:28:56,215 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:28:56,215 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:28:56,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1240478172, now seen corresponding path program 1 times [2023-08-30 08:28:56,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:28:56,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167703199] [2023-08-30 08:28:56,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:28:56,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:28:56,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:28:56,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:28:56,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:28:56,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167703199] [2023-08-30 08:28:56,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167703199] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:28:56,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:28:56,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:28:56,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116502754] [2023-08-30 08:28:56,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:28:56,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:28:56,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:28:56,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:28:56,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:28:56,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 410 [2023-08-30 08:28:56,269 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 95 transitions, 293 flow. Second operand has 3 states, 3 states have (on average 204.66666666666666) internal successors, (614), 3 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:56,269 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:28:56,269 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 410 [2023-08-30 08:28:56,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:28:56,811 INFO L130 PetriNetUnfolder]: 2005/4147 cut-off events. [2023-08-30 08:28:56,811 INFO L131 PetriNetUnfolder]: For 1019/1029 co-relation queries the response was YES. [2023-08-30 08:28:56,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8561 conditions, 4147 events. 2005/4147 cut-off events. For 1019/1029 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 29806 event pairs, 1384 based on Foata normal form. 10/3513 useless extension candidates. Maximal degree in co-relation 8545. Up to 2901 conditions per place. [2023-08-30 08:28:56,838 INFO L137 encePairwiseOnDemand]: 405/410 looper letters, 75 selfloop transitions, 4 changer transitions 0/120 dead transitions. [2023-08-30 08:28:56,839 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 120 transitions, 512 flow [2023-08-30 08:28:56,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:28:56,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:28:56,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 680 transitions. [2023-08-30 08:28:56,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5528455284552846 [2023-08-30 08:28:56,841 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 680 transitions. [2023-08-30 08:28:56,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 680 transitions. [2023-08-30 08:28:56,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:28:56,842 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 680 transitions. [2023-08-30 08:28:56,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 226.66666666666666) internal successors, (680), 3 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:56,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:56,846 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:56,846 INFO L175 Difference]: Start difference. First operand has 94 places, 95 transitions, 293 flow. Second operand 3 states and 680 transitions. [2023-08-30 08:28:56,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 120 transitions, 512 flow [2023-08-30 08:28:56,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 120 transitions, 504 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 08:28:56,851 INFO L231 Difference]: Finished difference. Result has 93 places, 94 transitions, 289 flow [2023-08-30 08:28:56,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=289, PETRI_PLACES=93, PETRI_TRANSITIONS=94} [2023-08-30 08:28:56,852 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 2 predicate places. [2023-08-30 08:28:56,852 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 94 transitions, 289 flow [2023-08-30 08:28:56,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 204.66666666666666) internal successors, (614), 3 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:56,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:28:56,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:28:56,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 08:28:56,853 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:28:56,854 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:28:56,854 INFO L85 PathProgramCache]: Analyzing trace with hash 199884839, now seen corresponding path program 1 times [2023-08-30 08:28:56,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:28:56,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738964832] [2023-08-30 08:28:56,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:28:56,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:28:56,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:28:56,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:28:56,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:28:56,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738964832] [2023-08-30 08:28:56,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738964832] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:28:56,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:28:56,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 08:28:56,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800550391] [2023-08-30 08:28:56,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:28:56,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 08:28:56,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:28:56,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 08:28:56,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-30 08:28:57,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 410 [2023-08-30 08:28:57,069 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 94 transitions, 289 flow. Second operand has 6 states, 6 states have (on average 176.33333333333334) internal successors, (1058), 6 states have internal predecessors, (1058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:57,069 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:28:57,069 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 410 [2023-08-30 08:28:57,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:28:57,963 INFO L130 PetriNetUnfolder]: 4089/7201 cut-off events. [2023-08-30 08:28:57,963 INFO L131 PetriNetUnfolder]: For 2141/2175 co-relation queries the response was YES. [2023-08-30 08:28:57,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16003 conditions, 7201 events. 4089/7201 cut-off events. For 2141/2175 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 51374 event pairs, 863 based on Foata normal form. 10/6198 useless extension candidates. Maximal degree in co-relation 15987. Up to 2650 conditions per place. [2023-08-30 08:28:58,005 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 203 selfloop transitions, 16 changer transitions 0/247 dead transitions. [2023-08-30 08:28:58,006 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 247 transitions, 1175 flow [2023-08-30 08:28:58,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 08:28:58,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 08:28:58,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1607 transitions. [2023-08-30 08:28:58,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4899390243902439 [2023-08-30 08:28:58,010 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1607 transitions. [2023-08-30 08:28:58,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1607 transitions. [2023-08-30 08:28:58,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:28:58,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1607 transitions. [2023-08-30 08:28:58,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 200.875) internal successors, (1607), 8 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:58,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 410.0) internal successors, (3690), 9 states have internal predecessors, (3690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:58,021 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 410.0) internal successors, (3690), 9 states have internal predecessors, (3690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:58,021 INFO L175 Difference]: Start difference. First operand has 93 places, 94 transitions, 289 flow. Second operand 8 states and 1607 transitions. [2023-08-30 08:28:58,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 247 transitions, 1175 flow [2023-08-30 08:28:58,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 247 transitions, 1161 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 08:28:58,028 INFO L231 Difference]: Finished difference. Result has 102 places, 105 transitions, 375 flow [2023-08-30 08:28:58,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=375, PETRI_PLACES=102, PETRI_TRANSITIONS=105} [2023-08-30 08:28:58,028 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 11 predicate places. [2023-08-30 08:28:58,029 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 105 transitions, 375 flow [2023-08-30 08:28:58,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 176.33333333333334) internal successors, (1058), 6 states have internal predecessors, (1058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:58,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:28:58,029 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:28:58,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 08:28:58,030 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:28:58,030 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:28:58,030 INFO L85 PathProgramCache]: Analyzing trace with hash 199884838, now seen corresponding path program 1 times [2023-08-30 08:28:58,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:28:58,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446182119] [2023-08-30 08:28:58,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:28:58,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:28:58,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:28:58,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:28:58,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:28:58,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446182119] [2023-08-30 08:28:58,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446182119] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:28:58,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:28:58,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:28:58,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022544322] [2023-08-30 08:28:58,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:28:58,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:28:58,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:28:58,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:28:58,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:28:58,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 410 [2023-08-30 08:28:58,081 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 105 transitions, 375 flow. Second operand has 3 states, 3 states have (on average 200.0) internal successors, (600), 3 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:58,081 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:28:58,081 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 410 [2023-08-30 08:28:58,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:28:58,664 INFO L130 PetriNetUnfolder]: 2892/5574 cut-off events. [2023-08-30 08:28:58,664 INFO L131 PetriNetUnfolder]: For 1987/1997 co-relation queries the response was YES. [2023-08-30 08:28:58,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12500 conditions, 5574 events. 2892/5574 cut-off events. For 1987/1997 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 40451 event pairs, 991 based on Foata normal form. 106/4903 useless extension candidates. Maximal degree in co-relation 12479. Up to 3501 conditions per place. [2023-08-30 08:28:58,699 INFO L137 encePairwiseOnDemand]: 408/410 looper letters, 84 selfloop transitions, 2 changer transitions 0/130 dead transitions. [2023-08-30 08:28:58,699 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 130 transitions, 608 flow [2023-08-30 08:28:58,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:28:58,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:28:58,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 665 transitions. [2023-08-30 08:28:58,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.540650406504065 [2023-08-30 08:28:58,701 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 665 transitions. [2023-08-30 08:28:58,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 665 transitions. [2023-08-30 08:28:58,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:28:58,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 665 transitions. [2023-08-30 08:28:58,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 221.66666666666666) internal successors, (665), 3 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:58,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:58,706 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:58,706 INFO L175 Difference]: Start difference. First operand has 102 places, 105 transitions, 375 flow. Second operand 3 states and 665 transitions. [2023-08-30 08:28:58,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 130 transitions, 608 flow [2023-08-30 08:28:58,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 130 transitions, 603 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:28:58,713 INFO L231 Difference]: Finished difference. Result has 103 places, 104 transitions, 374 flow [2023-08-30 08:28:58,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=374, PETRI_PLACES=103, PETRI_TRANSITIONS=104} [2023-08-30 08:28:58,714 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 12 predicate places. [2023-08-30 08:28:58,714 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 104 transitions, 374 flow [2023-08-30 08:28:58,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 200.0) internal successors, (600), 3 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:58,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:28:58,715 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:28:58,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 08:28:58,715 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:28:58,715 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:28:58,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1635002933, now seen corresponding path program 1 times [2023-08-30 08:28:58,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:28:58,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283326345] [2023-08-30 08:28:58,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:28:58,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:28:58,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:28:58,756 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 08:28:58,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:28:58,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283326345] [2023-08-30 08:28:58,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283326345] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:28:58,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:28:58,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:28:58,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375318233] [2023-08-30 08:28:58,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:28:58,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:28:58,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:28:58,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:28:58,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:28:58,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 410 [2023-08-30 08:28:58,766 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 104 transitions, 374 flow. Second operand has 3 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:58,766 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:28:58,766 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 410 [2023-08-30 08:28:58,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:28:59,417 INFO L130 PetriNetUnfolder]: 2873/5599 cut-off events. [2023-08-30 08:28:59,418 INFO L131 PetriNetUnfolder]: For 2085/2095 co-relation queries the response was YES. [2023-08-30 08:28:59,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12688 conditions, 5599 events. 2873/5599 cut-off events. For 2085/2095 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 40802 event pairs, 1950 based on Foata normal form. 10/4879 useless extension candidates. Maximal degree in co-relation 12667. Up to 4197 conditions per place. [2023-08-30 08:28:59,461 INFO L137 encePairwiseOnDemand]: 404/410 looper letters, 84 selfloop transitions, 5 changer transitions 0/133 dead transitions. [2023-08-30 08:28:59,462 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 133 transitions, 675 flow [2023-08-30 08:28:59,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:28:59,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:28:59,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 674 transitions. [2023-08-30 08:28:59,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5479674796747968 [2023-08-30 08:28:59,465 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 674 transitions. [2023-08-30 08:28:59,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 674 transitions. [2023-08-30 08:28:59,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:28:59,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 674 transitions. [2023-08-30 08:28:59,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 224.66666666666666) internal successors, (674), 3 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:59,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:59,470 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:59,470 INFO L175 Difference]: Start difference. First operand has 103 places, 104 transitions, 374 flow. Second operand 3 states and 674 transitions. [2023-08-30 08:28:59,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 133 transitions, 675 flow [2023-08-30 08:28:59,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 133 transitions, 675 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 08:28:59,479 INFO L231 Difference]: Finished difference. Result has 104 places, 103 transitions, 382 flow [2023-08-30 08:28:59,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=382, PETRI_PLACES=104, PETRI_TRANSITIONS=103} [2023-08-30 08:28:59,480 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 13 predicate places. [2023-08-30 08:28:59,480 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 103 transitions, 382 flow [2023-08-30 08:28:59,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:59,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:28:59,481 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:28:59,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-30 08:28:59,482 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:28:59,482 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:28:59,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1635002935, now seen corresponding path program 1 times [2023-08-30 08:28:59,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:28:59,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40694668] [2023-08-30 08:28:59,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:28:59,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:28:59,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:28:59,537 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 08:28:59,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:28:59,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40694668] [2023-08-30 08:28:59,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40694668] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:28:59,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:28:59,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:28:59,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612416140] [2023-08-30 08:28:59,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:28:59,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:28:59,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:28:59,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:28:59,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:28:59,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 410 [2023-08-30 08:28:59,546 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 103 transitions, 382 flow. Second operand has 3 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:59,546 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:28:59,546 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 410 [2023-08-30 08:28:59,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:29:00,178 INFO L130 PetriNetUnfolder]: 2754/5402 cut-off events. [2023-08-30 08:29:00,178 INFO L131 PetriNetUnfolder]: For 2149/2159 co-relation queries the response was YES. [2023-08-30 08:29:00,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12521 conditions, 5402 events. 2754/5402 cut-off events. For 2149/2159 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 39150 event pairs, 1857 based on Foata normal form. 10/4770 useless extension candidates. Maximal degree in co-relation 12499. Up to 4000 conditions per place. [2023-08-30 08:29:00,204 INFO L137 encePairwiseOnDemand]: 405/410 looper letters, 84 selfloop transitions, 4 changer transitions 0/132 dead transitions. [2023-08-30 08:29:00,204 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 132 transitions, 679 flow [2023-08-30 08:29:00,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:29:00,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:29:00,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 673 transitions. [2023-08-30 08:29:00,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5471544715447154 [2023-08-30 08:29:00,207 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 673 transitions. [2023-08-30 08:29:00,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 673 transitions. [2023-08-30 08:29:00,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:29:00,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 673 transitions. [2023-08-30 08:29:00,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 224.33333333333334) internal successors, (673), 3 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:00,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:00,211 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:00,211 INFO L175 Difference]: Start difference. First operand has 104 places, 103 transitions, 382 flow. Second operand 3 states and 673 transitions. [2023-08-30 08:29:00,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 132 transitions, 679 flow [2023-08-30 08:29:00,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 132 transitions, 671 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 08:29:00,219 INFO L231 Difference]: Finished difference. Result has 103 places, 102 transitions, 378 flow [2023-08-30 08:29:00,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=378, PETRI_PLACES=103, PETRI_TRANSITIONS=102} [2023-08-30 08:29:00,219 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 12 predicate places. [2023-08-30 08:29:00,220 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 102 transitions, 378 flow [2023-08-30 08:29:00,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:00,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:29:00,220 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:29:00,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-30 08:29:00,221 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:29:00,221 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:29:00,221 INFO L85 PathProgramCache]: Analyzing trace with hash 854518012, now seen corresponding path program 1 times [2023-08-30 08:29:00,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:29:00,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866806543] [2023-08-30 08:29:00,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:29:00,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:29:00,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:29:00,289 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 08:29:00,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:29:00,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866806543] [2023-08-30 08:29:00,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866806543] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:29:00,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:29:00,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 08:29:00,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901408154] [2023-08-30 08:29:00,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:29:00,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 08:29:00,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:29:00,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 08:29:00,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-30 08:29:00,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 410 [2023-08-30 08:29:00,417 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 102 transitions, 378 flow. Second operand has 6 states, 6 states have (on average 176.5) internal successors, (1059), 6 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:00,417 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:29:00,417 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 410 [2023-08-30 08:29:00,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:29:01,448 INFO L130 PetriNetUnfolder]: 5826/10024 cut-off events. [2023-08-30 08:29:01,449 INFO L131 PetriNetUnfolder]: For 4507/4543 co-relation queries the response was YES. [2023-08-30 08:29:01,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24509 conditions, 10024 events. 5826/10024 cut-off events. For 4507/4543 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 72007 event pairs, 1536 based on Foata normal form. 10/9014 useless extension candidates. Maximal degree in co-relation 24487. Up to 3870 conditions per place. [2023-08-30 08:29:01,500 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 220 selfloop transitions, 18 changer transitions 0/267 dead transitions. [2023-08-30 08:29:01,500 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 267 transitions, 1516 flow [2023-08-30 08:29:01,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 08:29:01,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 08:29:01,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1590 transitions. [2023-08-30 08:29:01,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4847560975609756 [2023-08-30 08:29:01,505 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1590 transitions. [2023-08-30 08:29:01,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1590 transitions. [2023-08-30 08:29:01,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:29:01,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1590 transitions. [2023-08-30 08:29:01,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 198.75) internal successors, (1590), 8 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:01,514 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 410.0) internal successors, (3690), 9 states have internal predecessors, (3690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:01,515 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 410.0) internal successors, (3690), 9 states have internal predecessors, (3690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:01,515 INFO L175 Difference]: Start difference. First operand has 103 places, 102 transitions, 378 flow. Second operand 8 states and 1590 transitions. [2023-08-30 08:29:01,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 267 transitions, 1516 flow [2023-08-30 08:29:01,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 267 transitions, 1502 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 08:29:01,528 INFO L231 Difference]: Finished difference. Result has 112 places, 113 transitions, 474 flow [2023-08-30 08:29:01,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=474, PETRI_PLACES=112, PETRI_TRANSITIONS=113} [2023-08-30 08:29:01,529 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 21 predicate places. [2023-08-30 08:29:01,529 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 113 transitions, 474 flow [2023-08-30 08:29:01,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 176.5) internal successors, (1059), 6 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:01,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:29:01,530 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:29:01,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-30 08:29:01,530 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:29:01,531 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:29:01,531 INFO L85 PathProgramCache]: Analyzing trace with hash 854518013, now seen corresponding path program 1 times [2023-08-30 08:29:01,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:29:01,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023954204] [2023-08-30 08:29:01,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:29:01,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:29:01,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:29:01,565 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 08:29:01,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:29:01,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023954204] [2023-08-30 08:29:01,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023954204] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:29:01,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:29:01,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:29:01,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883147960] [2023-08-30 08:29:01,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:29:01,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:29:01,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:29:01,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:29:01,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:29:01,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 410 [2023-08-30 08:29:01,584 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 113 transitions, 474 flow. Second operand has 3 states, 3 states have (on average 200.33333333333334) internal successors, (601), 3 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:01,584 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:29:01,584 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 410 [2023-08-30 08:29:01,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:29:02,279 INFO L130 PetriNetUnfolder]: 4161/7847 cut-off events. [2023-08-30 08:29:02,279 INFO L131 PetriNetUnfolder]: For 4337/4349 co-relation queries the response was YES. [2023-08-30 08:29:02,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19478 conditions, 7847 events. 4161/7847 cut-off events. For 4337/4349 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 56785 event pairs, 1340 based on Foata normal form. 148/7309 useless extension candidates. Maximal degree in co-relation 19451. Up to 5149 conditions per place. [2023-08-30 08:29:02,319 INFO L137 encePairwiseOnDemand]: 408/410 looper letters, 94 selfloop transitions, 2 changer transitions 0/143 dead transitions. [2023-08-30 08:29:02,319 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 143 transitions, 791 flow [2023-08-30 08:29:02,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:29:02,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:29:02,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 658 transitions. [2023-08-30 08:29:02,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5349593495934959 [2023-08-30 08:29:02,322 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 658 transitions. [2023-08-30 08:29:02,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 658 transitions. [2023-08-30 08:29:02,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:29:02,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 658 transitions. [2023-08-30 08:29:02,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 219.33333333333334) internal successors, (658), 3 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:02,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:02,326 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:02,326 INFO L175 Difference]: Start difference. First operand has 112 places, 113 transitions, 474 flow. Second operand 3 states and 658 transitions. [2023-08-30 08:29:02,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 143 transitions, 791 flow [2023-08-30 08:29:02,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 143 transitions, 791 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 08:29:02,340 INFO L231 Difference]: Finished difference. Result has 114 places, 112 transitions, 478 flow [2023-08-30 08:29:02,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=465, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=478, PETRI_PLACES=114, PETRI_TRANSITIONS=112} [2023-08-30 08:29:02,341 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 23 predicate places. [2023-08-30 08:29:02,341 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 112 transitions, 478 flow [2023-08-30 08:29:02,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 200.33333333333334) internal successors, (601), 3 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:02,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:29:02,342 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:29:02,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-30 08:29:02,342 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:29:02,342 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:29:02,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1293225098, now seen corresponding path program 1 times [2023-08-30 08:29:02,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:29:02,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692315704] [2023-08-30 08:29:02,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:29:02,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:29:02,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:29:02,407 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:29:02,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:29:02,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692315704] [2023-08-30 08:29:02,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692315704] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:29:02,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058827353] [2023-08-30 08:29:02,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:29:02,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:29:02,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:29:02,410 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:29:02,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 08:29:02,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:29:02,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 08:29:02,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:29:02,584 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:29:02,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:29:02,627 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:29:02,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058827353] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:29:02,627 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:29:02,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2023-08-30 08:29:02,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889480261] [2023-08-30 08:29:02,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:29:02,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 08:29:02,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:29:02,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 08:29:02,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-30 08:29:02,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 410 [2023-08-30 08:29:02,691 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 112 transitions, 478 flow. Second operand has 6 states, 6 states have (on average 188.66666666666666) internal successors, (1132), 6 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:02,691 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:29:02,691 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 410 [2023-08-30 08:29:02,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:29:05,346 INFO L130 PetriNetUnfolder]: 15115/25247 cut-off events. [2023-08-30 08:29:05,347 INFO L131 PetriNetUnfolder]: For 14072/14144 co-relation queries the response was YES. [2023-08-30 08:29:05,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64534 conditions, 25247 events. 15115/25247 cut-off events. For 14072/14144 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 185005 event pairs, 681 based on Foata normal form. 1660/25285 useless extension candidates. Maximal degree in co-relation 64506. Up to 8274 conditions per place. [2023-08-30 08:29:05,490 INFO L137 encePairwiseOnDemand]: 395/410 looper letters, 259 selfloop transitions, 19 changer transitions 0/303 dead transitions. [2023-08-30 08:29:05,490 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 303 transitions, 1749 flow [2023-08-30 08:29:05,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 08:29:05,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 08:29:05,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1339 transitions. [2023-08-30 08:29:05,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5443089430894309 [2023-08-30 08:29:05,494 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1339 transitions. [2023-08-30 08:29:05,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1339 transitions. [2023-08-30 08:29:05,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:29:05,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1339 transitions. [2023-08-30 08:29:05,498 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 223.16666666666666) internal successors, (1339), 6 states have internal predecessors, (1339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:05,501 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 410.0) internal successors, (2870), 7 states have internal predecessors, (2870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:05,501 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 410.0) internal successors, (2870), 7 states have internal predecessors, (2870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:05,501 INFO L175 Difference]: Start difference. First operand has 114 places, 112 transitions, 478 flow. Second operand 6 states and 1339 transitions. [2023-08-30 08:29:05,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 303 transitions, 1749 flow [2023-08-30 08:29:05,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 303 transitions, 1749 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 08:29:05,561 INFO L231 Difference]: Finished difference. Result has 121 places, 120 transitions, 607 flow [2023-08-30 08:29:05,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=470, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=607, PETRI_PLACES=121, PETRI_TRANSITIONS=120} [2023-08-30 08:29:05,561 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 30 predicate places. [2023-08-30 08:29:05,561 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 120 transitions, 607 flow [2023-08-30 08:29:05,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 188.66666666666666) internal successors, (1132), 6 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:05,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:29:05,562 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:29:05,568 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 08:29:05,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:29:05,768 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:29:05,768 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:29:05,768 INFO L85 PathProgramCache]: Analyzing trace with hash 727042415, now seen corresponding path program 1 times [2023-08-30 08:29:05,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:29:05,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981570751] [2023-08-30 08:29:05,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:29:05,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:29:05,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:29:05,894 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:29:05,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:29:05,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981570751] [2023-08-30 08:29:05,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981570751] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:29:05,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:29:05,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 08:29:05,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958094906] [2023-08-30 08:29:05,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:29:05,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 08:29:05,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:29:05,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 08:29:05,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 08:29:05,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 410 [2023-08-30 08:29:05,965 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 120 transitions, 607 flow. Second operand has 5 states, 5 states have (on average 187.0) internal successors, (935), 5 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:05,965 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:29:05,965 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 410 [2023-08-30 08:29:05,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:29:08,774 INFO L130 PetriNetUnfolder]: 14018/24610 cut-off events. [2023-08-30 08:29:08,774 INFO L131 PetriNetUnfolder]: For 17219/17383 co-relation queries the response was YES. [2023-08-30 08:29:08,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64543 conditions, 24610 events. 14018/24610 cut-off events. For 17219/17383 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 187080 event pairs, 6560 based on Foata normal form. 308/23058 useless extension candidates. Maximal degree in co-relation 64509. Up to 11792 conditions per place. [2023-08-30 08:29:08,903 INFO L137 encePairwiseOnDemand]: 404/410 looper letters, 140 selfloop transitions, 9 changer transitions 0/196 dead transitions. [2023-08-30 08:29:08,903 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 196 transitions, 1232 flow [2023-08-30 08:29:08,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 08:29:08,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 08:29:08,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1031 transitions. [2023-08-30 08:29:08,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5029268292682927 [2023-08-30 08:29:08,906 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1031 transitions. [2023-08-30 08:29:08,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1031 transitions. [2023-08-30 08:29:08,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:29:08,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1031 transitions. [2023-08-30 08:29:08,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 206.2) internal successors, (1031), 5 states have internal predecessors, (1031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:08,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 410.0) internal successors, (2460), 6 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:08,912 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 410.0) internal successors, (2460), 6 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:08,913 INFO L175 Difference]: Start difference. First operand has 121 places, 120 transitions, 607 flow. Second operand 5 states and 1031 transitions. [2023-08-30 08:29:08,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 196 transitions, 1232 flow [2023-08-30 08:29:08,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 196 transitions, 1216 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-30 08:29:08,958 INFO L231 Difference]: Finished difference. Result has 125 places, 122 transitions, 640 flow [2023-08-30 08:29:08,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=588, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=640, PETRI_PLACES=125, PETRI_TRANSITIONS=122} [2023-08-30 08:29:08,958 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 34 predicate places. [2023-08-30 08:29:08,959 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 122 transitions, 640 flow [2023-08-30 08:29:08,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 187.0) internal successors, (935), 5 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:08,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:29:08,959 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:29:08,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-30 08:29:08,959 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:29:08,960 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:29:08,960 INFO L85 PathProgramCache]: Analyzing trace with hash -573214515, now seen corresponding path program 1 times [2023-08-30 08:29:08,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:29:08,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434606474] [2023-08-30 08:29:08,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:29:08,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:29:08,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:29:09,062 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 08:29:09,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:29:09,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434606474] [2023-08-30 08:29:09,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434606474] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:29:09,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:29:09,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 08:29:09,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250572537] [2023-08-30 08:29:09,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:29:09,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 08:29:09,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:29:09,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 08:29:09,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 08:29:09,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 410 [2023-08-30 08:29:09,152 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 122 transitions, 640 flow. Second operand has 5 states, 5 states have (on average 187.2) internal successors, (936), 5 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:09,152 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:29:09,152 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 410 [2023-08-30 08:29:09,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:29:12,634 INFO L130 PetriNetUnfolder]: 15367/26995 cut-off events. [2023-08-30 08:29:12,634 INFO L131 PetriNetUnfolder]: For 22426/22572 co-relation queries the response was YES. [2023-08-30 08:29:12,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72760 conditions, 26995 events. 15367/26995 cut-off events. For 22426/22572 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 202947 event pairs, 7556 based on Foata normal form. 324/25259 useless extension candidates. Maximal degree in co-relation 72724. Up to 12636 conditions per place. [2023-08-30 08:29:12,760 INFO L137 encePairwiseOnDemand]: 404/410 looper letters, 148 selfloop transitions, 9 changer transitions 0/204 dead transitions. [2023-08-30 08:29:12,760 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 204 transitions, 1371 flow [2023-08-30 08:29:12,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 08:29:12,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 08:29:12,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1029 transitions. [2023-08-30 08:29:12,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5019512195121951 [2023-08-30 08:29:12,763 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1029 transitions. [2023-08-30 08:29:12,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1029 transitions. [2023-08-30 08:29:12,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:29:12,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1029 transitions. [2023-08-30 08:29:12,765 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 205.8) internal successors, (1029), 5 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:12,768 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 410.0) internal successors, (2460), 6 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:12,768 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 410.0) internal successors, (2460), 6 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:12,768 INFO L175 Difference]: Start difference. First operand has 125 places, 122 transitions, 640 flow. Second operand 5 states and 1029 transitions. [2023-08-30 08:29:12,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 204 transitions, 1371 flow [2023-08-30 08:29:12,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 204 transitions, 1335 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 08:29:12,844 INFO L231 Difference]: Finished difference. Result has 127 places, 124 transitions, 671 flow [2023-08-30 08:29:12,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=619, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=671, PETRI_PLACES=127, PETRI_TRANSITIONS=124} [2023-08-30 08:29:12,845 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 36 predicate places. [2023-08-30 08:29:12,845 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 124 transitions, 671 flow [2023-08-30 08:29:12,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 187.2) internal successors, (936), 5 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:12,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:29:12,846 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:29:12,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-30 08:29:12,846 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:29:12,846 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:29:12,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1799240676, now seen corresponding path program 1 times [2023-08-30 08:29:12,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:29:12,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738945051] [2023-08-30 08:29:12,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:29:12,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:29:12,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:29:12,959 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 08:29:12,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:29:12,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738945051] [2023-08-30 08:29:12,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738945051] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:29:12,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:29:12,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 08:29:12,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310995956] [2023-08-30 08:29:12,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:29:12,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 08:29:12,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:29:12,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 08:29:12,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-30 08:29:13,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 410 [2023-08-30 08:29:13,115 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 124 transitions, 671 flow. Second operand has 7 states, 7 states have (on average 177.14285714285714) internal successors, (1240), 7 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:13,115 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:29:13,115 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 410 [2023-08-30 08:29:13,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:29:17,135 INFO L130 PetriNetUnfolder]: 18568/32076 cut-off events. [2023-08-30 08:29:17,135 INFO L131 PetriNetUnfolder]: For 32369/32561 co-relation queries the response was YES. [2023-08-30 08:29:17,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89874 conditions, 32076 events. 18568/32076 cut-off events. For 32369/32561 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 247186 event pairs, 3886 based on Foata normal form. 304/30058 useless extension candidates. Maximal degree in co-relation 89837. Up to 18466 conditions per place. [2023-08-30 08:29:17,302 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 303 selfloop transitions, 31 changer transitions 0/369 dead transitions. [2023-08-30 08:29:17,303 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 369 transitions, 2501 flow [2023-08-30 08:29:17,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 08:29:17,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 08:29:17,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2354 transitions. [2023-08-30 08:29:17,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47845528455284553 [2023-08-30 08:29:17,306 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2354 transitions. [2023-08-30 08:29:17,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2354 transitions. [2023-08-30 08:29:17,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:29:17,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2354 transitions. [2023-08-30 08:29:17,311 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 196.16666666666666) internal successors, (2354), 12 states have internal predecessors, (2354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:17,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:17,316 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:17,317 INFO L175 Difference]: Start difference. First operand has 127 places, 124 transitions, 671 flow. Second operand 12 states and 2354 transitions. [2023-08-30 08:29:17,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 369 transitions, 2501 flow [2023-08-30 08:29:17,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 369 transitions, 2481 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 08:29:17,437 INFO L231 Difference]: Finished difference. Result has 138 places, 136 transitions, 839 flow [2023-08-30 08:29:17,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=658, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=839, PETRI_PLACES=138, PETRI_TRANSITIONS=136} [2023-08-30 08:29:17,437 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 47 predicate places. [2023-08-30 08:29:17,437 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 136 transitions, 839 flow [2023-08-30 08:29:17,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 177.14285714285714) internal successors, (1240), 7 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:17,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:29:17,438 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:29:17,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-30 08:29:17,439 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:29:17,439 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:29:17,439 INFO L85 PathProgramCache]: Analyzing trace with hash -304450102, now seen corresponding path program 1 times [2023-08-30 08:29:17,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:29:17,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23825598] [2023-08-30 08:29:17,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:29:17,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:29:17,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:29:17,536 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 08:29:17,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:29:17,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23825598] [2023-08-30 08:29:17,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23825598] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:29:17,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:29:17,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 08:29:17,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478986568] [2023-08-30 08:29:17,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:29:17,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 08:29:17,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:29:17,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 08:29:17,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-30 08:29:17,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 410 [2023-08-30 08:29:17,689 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 136 transitions, 839 flow. Second operand has 7 states, 7 states have (on average 177.14285714285714) internal successors, (1240), 7 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:17,689 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:29:17,689 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 410 [2023-08-30 08:29:17,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:29:22,407 INFO L130 PetriNetUnfolder]: 21173/36309 cut-off events. [2023-08-30 08:29:22,407 INFO L131 PetriNetUnfolder]: For 50675/50923 co-relation queries the response was YES. [2023-08-30 08:29:22,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105759 conditions, 36309 events. 21173/36309 cut-off events. For 50675/50923 co-relation queries the response was YES. Maximal size of possible extension queue 677. Compared 285936 event pairs, 4921 based on Foata normal form. 340/33984 useless extension candidates. Maximal degree in co-relation 105719. Up to 20935 conditions per place. [2023-08-30 08:29:22,630 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 313 selfloop transitions, 34 changer transitions 0/383 dead transitions. [2023-08-30 08:29:22,630 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 383 transitions, 2866 flow [2023-08-30 08:29:22,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 08:29:22,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 08:29:22,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2360 transitions. [2023-08-30 08:29:22,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4796747967479675 [2023-08-30 08:29:22,633 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2360 transitions. [2023-08-30 08:29:22,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2360 transitions. [2023-08-30 08:29:22,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:29:22,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2360 transitions. [2023-08-30 08:29:22,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 196.66666666666666) internal successors, (2360), 12 states have internal predecessors, (2360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:22,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:22,642 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:22,643 INFO L175 Difference]: Start difference. First operand has 138 places, 136 transitions, 839 flow. Second operand 12 states and 2360 transitions. [2023-08-30 08:29:22,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 383 transitions, 2866 flow [2023-08-30 08:29:22,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 383 transitions, 2829 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-08-30 08:29:22,768 INFO L231 Difference]: Finished difference. Result has 148 places, 148 transitions, 1011 flow [2023-08-30 08:29:22,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=815, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1011, PETRI_PLACES=148, PETRI_TRANSITIONS=148} [2023-08-30 08:29:22,768 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 57 predicate places. [2023-08-30 08:29:22,769 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 148 transitions, 1011 flow [2023-08-30 08:29:22,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 177.14285714285714) internal successors, (1240), 7 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:22,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:29:22,769 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:29:22,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-30 08:29:22,769 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:29:22,770 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:29:22,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1009499629, now seen corresponding path program 1 times [2023-08-30 08:29:22,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:29:22,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045773015] [2023-08-30 08:29:22,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:29:22,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:29:22,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:29:22,900 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 08:29:22,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:29:22,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045773015] [2023-08-30 08:29:22,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045773015] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:29:22,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132793714] [2023-08-30 08:29:22,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:29:22,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:29:22,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:29:22,905 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:29:22,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 08:29:23,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:29:23,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 08:29:23,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:29:23,153 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 08:29:23,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:29:23,261 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 08:29:23,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1132793714] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:29:23,261 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:29:23,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 08:29:23,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570781861] [2023-08-30 08:29:23,261 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:29:23,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 08:29:23,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:29:23,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 08:29:23,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-08-30 08:29:23,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 410 [2023-08-30 08:29:23,482 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 148 transitions, 1011 flow. Second operand has 14 states, 14 states have (on average 171.71428571428572) internal successors, (2404), 14 states have internal predecessors, (2404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:23,483 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:29:23,483 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 410 [2023-08-30 08:29:23,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:29:33,945 INFO L130 PetriNetUnfolder]: 44583/73155 cut-off events. [2023-08-30 08:29:33,946 INFO L131 PetriNetUnfolder]: For 124577/124587 co-relation queries the response was YES. [2023-08-30 08:29:34,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222445 conditions, 73155 events. 44583/73155 cut-off events. For 124577/124587 co-relation queries the response was YES. Maximal size of possible extension queue 1091. Compared 584295 event pairs, 3299 based on Foata normal form. 1354/69542 useless extension candidates. Maximal degree in co-relation 222401. Up to 17742 conditions per place. [2023-08-30 08:29:34,517 INFO L137 encePairwiseOnDemand]: 391/410 looper letters, 937 selfloop transitions, 123 changer transitions 14/1096 dead transitions. [2023-08-30 08:29:34,517 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 1096 transitions, 8383 flow [2023-08-30 08:29:34,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-08-30 08:29:34,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-08-30 08:29:34,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 6130 transitions. [2023-08-30 08:29:34,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46722560975609756 [2023-08-30 08:29:34,522 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 6130 transitions. [2023-08-30 08:29:34,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 6130 transitions. [2023-08-30 08:29:34,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:29:34,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 6130 transitions. [2023-08-30 08:29:34,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 191.5625) internal successors, (6130), 32 states have internal predecessors, (6130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:34,544 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 410.0) internal successors, (13530), 33 states have internal predecessors, (13530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:34,546 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 410.0) internal successors, (13530), 33 states have internal predecessors, (13530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:34,546 INFO L175 Difference]: Start difference. First operand has 148 places, 148 transitions, 1011 flow. Second operand 32 states and 6130 transitions. [2023-08-30 08:29:34,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 1096 transitions, 8383 flow [2023-08-30 08:29:35,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 1096 transitions, 8370 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-30 08:29:35,057 INFO L231 Difference]: Finished difference. Result has 186 places, 234 transitions, 2134 flow [2023-08-30 08:29:35,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=972, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=2134, PETRI_PLACES=186, PETRI_TRANSITIONS=234} [2023-08-30 08:29:35,057 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 95 predicate places. [2023-08-30 08:29:35,058 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 234 transitions, 2134 flow [2023-08-30 08:29:35,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 171.71428571428572) internal successors, (2404), 14 states have internal predecessors, (2404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:35,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:29:35,059 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:29:35,065 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-30 08:29:35,264 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,SelfDestructingSolverStorable25 [2023-08-30 08:29:35,265 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:29:35,265 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:29:35,265 INFO L85 PathProgramCache]: Analyzing trace with hash -694326327, now seen corresponding path program 1 times [2023-08-30 08:29:35,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:29:35,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453312817] [2023-08-30 08:29:35,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:29:35,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:29:35,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:29:35,564 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 08:29:35,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:29:35,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453312817] [2023-08-30 08:29:35,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453312817] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:29:35,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041868706] [2023-08-30 08:29:35,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:29:35,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:29:35,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:29:35,567 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:29:35,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 08:29:35,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:29:35,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 08:29:35,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:29:35,832 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 08:29:35,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:29:35,952 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 08:29:35,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041868706] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:29:35,952 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:29:35,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 08:29:35,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284041427] [2023-08-30 08:29:35,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:29:35,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 08:29:35,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:29:35,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 08:29:35,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-08-30 08:29:36,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 410 [2023-08-30 08:29:36,208 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 234 transitions, 2134 flow. Second operand has 14 states, 14 states have (on average 171.57142857142858) internal successors, (2402), 14 states have internal predecessors, (2402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:36,208 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:29:36,208 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 410 [2023-08-30 08:29:36,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:29:49,385 INFO L130 PetriNetUnfolder]: 48430/79310 cut-off events. [2023-08-30 08:29:49,385 INFO L131 PetriNetUnfolder]: For 201083/201093 co-relation queries the response was YES. [2023-08-30 08:29:49,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261195 conditions, 79310 events. 48430/79310 cut-off events. For 201083/201093 co-relation queries the response was YES. Maximal size of possible extension queue 1242. Compared 642135 event pairs, 3532 based on Foata normal form. 750/74612 useless extension candidates. Maximal degree in co-relation 261137. Up to 20713 conditions per place. [2023-08-30 08:29:50,175 INFO L137 encePairwiseOnDemand]: 397/410 looper letters, 977 selfloop transitions, 170 changer transitions 19/1190 dead transitions. [2023-08-30 08:29:50,175 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 1190 transitions, 10776 flow [2023-08-30 08:29:50,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-08-30 08:29:50,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-08-30 08:29:50,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 6080 transitions. [2023-08-30 08:29:50,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4634146341463415 [2023-08-30 08:29:50,181 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 6080 transitions. [2023-08-30 08:29:50,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 6080 transitions. [2023-08-30 08:29:50,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:29:50,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 6080 transitions. [2023-08-30 08:29:50,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 190.0) internal successors, (6080), 32 states have internal predecessors, (6080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:50,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 410.0) internal successors, (13530), 33 states have internal predecessors, (13530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:50,196 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 410.0) internal successors, (13530), 33 states have internal predecessors, (13530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:50,196 INFO L175 Difference]: Start difference. First operand has 186 places, 234 transitions, 2134 flow. Second operand 32 states and 6080 transitions. [2023-08-30 08:29:50,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 1190 transitions, 10776 flow [2023-08-30 08:29:51,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 1190 transitions, 10583 flow, removed 62 selfloop flow, removed 9 redundant places. [2023-08-30 08:29:51,888 INFO L231 Difference]: Finished difference. Result has 213 places, 319 transitions, 3373 flow [2023-08-30 08:29:51,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=2051, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=3373, PETRI_PLACES=213, PETRI_TRANSITIONS=319} [2023-08-30 08:29:51,888 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 122 predicate places. [2023-08-30 08:29:51,888 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 319 transitions, 3373 flow [2023-08-30 08:29:51,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 171.57142857142858) internal successors, (2402), 14 states have internal predecessors, (2402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:51,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:29:51,889 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:29:51,894 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 08:29:52,089 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,SelfDestructingSolverStorable26 [2023-08-30 08:29:52,090 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:29:52,090 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:29:52,090 INFO L85 PathProgramCache]: Analyzing trace with hash 54498219, now seen corresponding path program 1 times [2023-08-30 08:29:52,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:29:52,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600327736] [2023-08-30 08:29:52,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:29:52,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:29:52,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:29:52,293 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 08:29:52,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:29:52,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600327736] [2023-08-30 08:29:52,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600327736] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:29:52,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660110650] [2023-08-30 08:29:52,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:29:52,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:29:52,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:29:52,297 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:29:52,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 08:29:52,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:29:52,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 882 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 08:29:52,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:29:52,697 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 08:29:52,697 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:29:52,884 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 08:29:52,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660110650] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:29:52,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:29:52,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 08:29:52,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505971178] [2023-08-30 08:29:52,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:29:52,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 08:29:52,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:29:52,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 08:29:52,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2023-08-30 08:29:53,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 410 [2023-08-30 08:29:53,024 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 319 transitions, 3373 flow. Second operand has 14 states, 14 states have (on average 193.57142857142858) internal successors, (2710), 14 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 08:29:53,024 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:29:53,024 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 410 [2023-08-30 08:29:53,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:30:20,752 INFO L130 PetriNetUnfolder]: 85206/143294 cut-off events. [2023-08-30 08:30:20,752 INFO L131 PetriNetUnfolder]: For 501563/502381 co-relation queries the response was YES. [2023-08-30 08:30:21,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 492634 conditions, 143294 events. 85206/143294 cut-off events. For 501563/502381 co-relation queries the response was YES. Maximal size of possible extension queue 1881. Compared 1227455 event pairs, 9162 based on Foata normal form. 2684/136298 useless extension candidates. Maximal degree in co-relation 492571. Up to 36470 conditions per place. [2023-08-30 08:30:22,023 INFO L137 encePairwiseOnDemand]: 401/410 looper letters, 0 selfloop transitions, 0 changer transitions 1079/1079 dead transitions. [2023-08-30 08:30:22,023 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 1079 transitions, 12474 flow [2023-08-30 08:30:22,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 08:30:22,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 08:30:22,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2397 transitions. [2023-08-30 08:30:22,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5314855875831486 [2023-08-30 08:30:22,027 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2397 transitions. [2023-08-30 08:30:22,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2397 transitions. [2023-08-30 08:30:22,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:30:22,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2397 transitions. [2023-08-30 08:30:22,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 217.9090909090909) internal successors, (2397), 11 states have internal predecessors, (2397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:30:22,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 410.0) internal successors, (4920), 12 states have internal predecessors, (4920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:30:22,034 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 410.0) internal successors, (4920), 12 states have internal predecessors, (4920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:30:22,034 INFO L175 Difference]: Start difference. First operand has 213 places, 319 transitions, 3373 flow. Second operand 11 states and 2397 transitions. [2023-08-30 08:30:22,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 1079 transitions, 12474 flow [2023-08-30 08:30:27,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 1079 transitions, 11847 flow, removed 76 selfloop flow, removed 13 redundant places. [2023-08-30 08:30:27,204 INFO L231 Difference]: Finished difference. Result has 207 places, 0 transitions, 0 flow [2023-08-30 08:30:27,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=3106, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=207, PETRI_TRANSITIONS=0} [2023-08-30 08:30:27,205 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 116 predicate places. [2023-08-30 08:30:27,205 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 0 transitions, 0 flow [2023-08-30 08:30:27,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 193.57142857142858) internal successors, (2710), 14 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 08:30:27,206 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 30 remaining) [2023-08-30 08:30:27,206 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 30 remaining) [2023-08-30 08:30:27,206 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 30 remaining) [2023-08-30 08:30:27,206 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 30 remaining) [2023-08-30 08:30:27,206 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 30 remaining) [2023-08-30 08:30:27,206 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 30 remaining) [2023-08-30 08:30:27,206 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 30 remaining) [2023-08-30 08:30:27,206 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 30 remaining) [2023-08-30 08:30:27,207 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 30 remaining) [2023-08-30 08:30:27,207 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 30 remaining) [2023-08-30 08:30:27,207 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 30 remaining) [2023-08-30 08:30:27,207 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 30 remaining) [2023-08-30 08:30:27,207 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 30 remaining) [2023-08-30 08:30:27,207 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 30 remaining) [2023-08-30 08:30:27,207 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 30 remaining) [2023-08-30 08:30:27,207 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 30 remaining) [2023-08-30 08:30:27,207 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 30 remaining) [2023-08-30 08:30:27,207 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 30 remaining) [2023-08-30 08:30:27,207 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 30 remaining) [2023-08-30 08:30:27,207 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 30 remaining) [2023-08-30 08:30:27,207 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 30 remaining) [2023-08-30 08:30:27,208 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 30 remaining) [2023-08-30 08:30:27,208 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 30 remaining) [2023-08-30 08:30:27,208 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 30 remaining) [2023-08-30 08:30:27,208 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 30 remaining) [2023-08-30 08:30:27,208 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 30 remaining) [2023-08-30 08:30:27,208 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 30 remaining) [2023-08-30 08:30:27,208 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 30 remaining) [2023-08-30 08:30:27,208 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 30 remaining) [2023-08-30 08:30:27,208 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 30 remaining) [2023-08-30 08:30:27,215 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 08:30:27,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:30:27,416 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:30:27,416 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-30 08:30:27,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 217 places, 231 transitions, 474 flow [2023-08-30 08:30:27,457 INFO L130 PetriNetUnfolder]: 21/253 cut-off events. [2023-08-30 08:30:27,457 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 08:30:27,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 253 events. 21/253 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 535 event pairs, 0 based on Foata normal form. 0/209 useless extension candidates. Maximal degree in co-relation 206. Up to 6 conditions per place. [2023-08-30 08:30:27,459 INFO L82 GeneralOperation]: Start removeDead. Operand has 217 places, 231 transitions, 474 flow [2023-08-30 08:30:27,460 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 217 places, 231 transitions, 474 flow [2023-08-30 08:30:27,461 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 08:30:27,461 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 217 places, 231 transitions, 474 flow [2023-08-30 08:30:27,461 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 217 places, 231 transitions, 474 flow [2023-08-30 08:30:27,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 217 places, 231 transitions, 474 flow [2023-08-30 08:30:27,483 INFO L130 PetriNetUnfolder]: 21/253 cut-off events. [2023-08-30 08:30:27,483 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 08:30:27,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 253 events. 21/253 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 535 event pairs, 0 based on Foata normal form. 0/209 useless extension candidates. Maximal degree in co-relation 206. Up to 6 conditions per place. [2023-08-30 08:30:27,495 INFO L119 LiptonReduction]: Number of co-enabled transitions 24056 [2023-08-30 08:30:32,119 INFO L134 LiptonReduction]: Checked pairs total: 72968 [2023-08-30 08:30:32,120 INFO L136 LiptonReduction]: Total number of compositions: 181 [2023-08-30 08:30:32,121 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-30 08:30:32,121 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;@4686841f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 08:30:32,121 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-30 08:30:32,125 INFO L130 PetriNetUnfolder]: 3/31 cut-off events. [2023-08-30 08:30:32,125 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 08:30:32,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:30:32,125 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-30 08:30:32,125 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 08:30:32,126 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:30:32,126 INFO L85 PathProgramCache]: Analyzing trace with hash -574457129, now seen corresponding path program 1 times [2023-08-30 08:30:32,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:30:32,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099777367] [2023-08-30 08:30:32,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:30:32,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:30:32,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 08:30:32,135 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 08:30:32,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 08:30:32,146 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 08:30:32,146 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 08:30:32,146 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-30 08:30:32,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-08-30 08:30:32,147 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-30 08:30:32,147 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-30 08:30:32,147 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 08:30:32,148 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-30 08:30:32,190 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 08:30:32,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 308 places, 329 transitions, 679 flow [2023-08-30 08:30:32,237 INFO L130 PetriNetUnfolder]: 31/363 cut-off events. [2023-08-30 08:30:32,237 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-30 08:30:32,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 379 conditions, 363 events. 31/363 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1085 event pairs, 0 based on Foata normal form. 0/298 useless extension candidates. Maximal degree in co-relation 303. Up to 8 conditions per place. [2023-08-30 08:30:32,242 INFO L82 GeneralOperation]: Start removeDead. Operand has 308 places, 329 transitions, 679 flow [2023-08-30 08:30:32,245 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 308 places, 329 transitions, 679 flow [2023-08-30 08:30:32,245 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 08:30:32,245 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 308 places, 329 transitions, 679 flow [2023-08-30 08:30:32,246 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 308 places, 329 transitions, 679 flow [2023-08-30 08:30:32,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 308 places, 329 transitions, 679 flow [2023-08-30 08:30:32,289 INFO L130 PetriNetUnfolder]: 31/363 cut-off events. [2023-08-30 08:30:32,289 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-30 08:30:32,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 379 conditions, 363 events. 31/363 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1085 event pairs, 0 based on Foata normal form. 0/298 useless extension candidates. Maximal degree in co-relation 303. Up to 8 conditions per place. [2023-08-30 08:30:32,309 INFO L119 LiptonReduction]: Number of co-enabled transitions 64602 [2023-08-30 08:30:38,115 INFO L134 LiptonReduction]: Checked pairs total: 173976 [2023-08-30 08:30:38,115 INFO L136 LiptonReduction]: Total number of compositions: 249 [2023-08-30 08:30:38,116 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 08:30:38,117 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;@4686841f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 08:30:38,117 INFO L358 AbstractCegarLoop]: Starting to check reachability of 40 error locations. [2023-08-30 08:30:38,120 INFO L130 PetriNetUnfolder]: 4/35 cut-off events. [2023-08-30 08:30:38,120 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 08:30:38,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:30:38,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:30:38,121 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-30 08:30:38,121 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:30:38,121 INFO L85 PathProgramCache]: Analyzing trace with hash 738447711, now seen corresponding path program 1 times [2023-08-30 08:30:38,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:30:38,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020781106] [2023-08-30 08:30:38,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:30:38,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:30:38,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:30:38,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:30:38,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:30:38,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020781106] [2023-08-30 08:30:38,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020781106] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:30:38,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:30:38,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 08:30:38,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461620813] [2023-08-30 08:30:38,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:30:38,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 08:30:38,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:30:38,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 08:30:38,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 08:30:38,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 578 [2023-08-30 08:30:38,173 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 144 transitions, 309 flow. Second operand has 4 states, 4 states have (on average 283.5) internal successors, (1134), 4 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:30:38,173 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:30:38,173 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 578 [2023-08-30 08:30:38,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:30:45,592 INFO L130 PetriNetUnfolder]: 75621/123101 cut-off events. [2023-08-30 08:30:45,592 INFO L131 PetriNetUnfolder]: For 3415/3415 co-relation queries the response was YES. [2023-08-30 08:30:45,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225968 conditions, 123101 events. 75621/123101 cut-off events. For 3415/3415 co-relation queries the response was YES. Maximal size of possible extension queue 3231. Compared 1149690 event pairs, 5649 based on Foata normal form. 0/85858 useless extension candidates. Maximal degree in co-relation 126578. Up to 72729 conditions per place. [2023-08-30 08:30:46,209 INFO L137 encePairwiseOnDemand]: 562/578 looper letters, 228 selfloop transitions, 9 changer transitions 0/293 dead transitions. [2023-08-30 08:30:46,210 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 293 transitions, 1112 flow [2023-08-30 08:30:46,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 08:30:46,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 08:30:46,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1667 transitions. [2023-08-30 08:30:46,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5768166089965397 [2023-08-30 08:30:46,211 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1667 transitions. [2023-08-30 08:30:46,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1667 transitions. [2023-08-30 08:30:46,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:30:46,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1667 transitions. [2023-08-30 08:30:46,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 333.4) internal successors, (1667), 5 states have internal predecessors, (1667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:30:46,216 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 578.0) internal successors, (3468), 6 states have internal predecessors, (3468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:30:46,216 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 578.0) internal successors, (3468), 6 states have internal predecessors, (3468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:30:46,216 INFO L175 Difference]: Start difference. First operand has 130 places, 144 transitions, 309 flow. Second operand 5 states and 1667 transitions. [2023-08-30 08:30:46,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 293 transitions, 1112 flow [2023-08-30 08:30:46,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 293 transitions, 1100 flow, removed 6 selfloop flow, removed 0 redundant places. [2023-08-30 08:30:46,221 INFO L231 Difference]: Finished difference. Result has 135 places, 143 transitions, 359 flow [2023-08-30 08:30:46,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=578, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=359, PETRI_PLACES=135, PETRI_TRANSITIONS=143} [2023-08-30 08:30:46,222 INFO L281 CegarLoopForPetriNet]: 130 programPoint places, 5 predicate places. [2023-08-30 08:30:46,222 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 143 transitions, 359 flow [2023-08-30 08:30:46,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 283.5) internal successors, (1134), 4 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:30:46,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:30:46,222 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:30:46,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-08-30 08:30:46,223 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-30 08:30:46,223 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:30:46,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1549207263, now seen corresponding path program 1 times [2023-08-30 08:30:46,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:30:46,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944062441] [2023-08-30 08:30:46,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:30:46,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:30:46,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:30:46,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:30:46,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:30:46,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944062441] [2023-08-30 08:30:46,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944062441] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:30:46,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:30:46,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 08:30:46,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829318192] [2023-08-30 08:30:46,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:30:46,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:30:46,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:30:46,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:30:46,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:30:46,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 578 [2023-08-30 08:30:46,309 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 143 transitions, 359 flow. Second operand has 3 states, 3 states have (on average 269.3333333333333) internal successors, (808), 3 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:30:46,309 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:30:46,309 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 578 [2023-08-30 08:30:46,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:31:03,141 INFO L130 PetriNetUnfolder]: 168734/238074 cut-off events. [2023-08-30 08:31:03,141 INFO L131 PetriNetUnfolder]: For 30640/34486 co-relation queries the response was YES. [2023-08-30 08:31:03,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 490787 conditions, 238074 events. 168734/238074 cut-off events. For 30640/34486 co-relation queries the response was YES. Maximal size of possible extension queue 10899. Compared 1967601 event pairs, 57704 based on Foata normal form. 7655/198537 useless extension candidates. Maximal degree in co-relation 363510. Up to 220588 conditions per place. [2023-08-30 08:31:04,600 INFO L137 encePairwiseOnDemand]: 553/578 looper letters, 129 selfloop transitions, 4 changer transitions 0/175 dead transitions. [2023-08-30 08:31:04,600 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 175 transitions, 717 flow [2023-08-30 08:31:04,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:31:04,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:31:04,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 948 transitions. [2023-08-30 08:31:04,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5467128027681661 [2023-08-30 08:31:04,601 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 948 transitions. [2023-08-30 08:31:04,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 948 transitions. [2023-08-30 08:31:04,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:31:04,602 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 948 transitions. [2023-08-30 08:31:04,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 316.0) internal successors, (948), 3 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:31:04,604 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 578.0) internal successors, (2312), 4 states have internal predecessors, (2312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:31:04,604 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 578.0) internal successors, (2312), 4 states have internal predecessors, (2312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:31:04,604 INFO L175 Difference]: Start difference. First operand has 135 places, 143 transitions, 359 flow. Second operand 3 states and 948 transitions. [2023-08-30 08:31:04,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 175 transitions, 717 flow [2023-08-30 08:31:04,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 175 transitions, 717 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 08:31:04,632 INFO L231 Difference]: Finished difference. Result has 138 places, 146 transitions, 425 flow [2023-08-30 08:31:04,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=578, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=425, PETRI_PLACES=138, PETRI_TRANSITIONS=146} [2023-08-30 08:31:04,637 INFO L281 CegarLoopForPetriNet]: 130 programPoint places, 8 predicate places. [2023-08-30 08:31:04,637 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 146 transitions, 425 flow [2023-08-30 08:31:04,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 269.3333333333333) internal successors, (808), 3 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:31:04,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:31:04,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:31:04,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-08-30 08:31:04,638 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-30 08:31:04,638 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:31:04,638 INFO L85 PathProgramCache]: Analyzing trace with hash 928305410, now seen corresponding path program 1 times [2023-08-30 08:31:04,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:31:04,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773949400] [2023-08-30 08:31:04,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:31:04,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:31:04,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:31:04,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:31:04,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:31:04,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773949400] [2023-08-30 08:31:04,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773949400] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:31:04,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:31:04,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 08:31:04,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568439552] [2023-08-30 08:31:04,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:31:04,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 08:31:04,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:31:04,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 08:31:04,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 08:31:04,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 578 [2023-08-30 08:31:04,779 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 146 transitions, 425 flow. Second operand has 5 states, 5 states have (on average 261.6) internal successors, (1308), 5 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:31:04,780 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:31:04,780 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 578 [2023-08-30 08:31:04,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:31:32,764 INFO L130 PetriNetUnfolder]: 245412/346044 cut-off events. [2023-08-30 08:31:32,765 INFO L131 PetriNetUnfolder]: For 79160/104150 co-relation queries the response was YES. [2023-08-30 08:31:33,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 772224 conditions, 346044 events. 245412/346044 cut-off events. For 79160/104150 co-relation queries the response was YES. Maximal size of possible extension queue 14037. Compared 2979735 event pairs, 91900 based on Foata normal form. 3391/279911 useless extension candidates. Maximal degree in co-relation 622234. Up to 228538 conditions per place. [2023-08-30 08:31:35,043 INFO L137 encePairwiseOnDemand]: 567/578 looper letters, 292 selfloop transitions, 10 changer transitions 0/343 dead transitions. [2023-08-30 08:31:35,043 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 343 transitions, 1557 flow [2023-08-30 08:31:35,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 08:31:35,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 08:31:35,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1855 transitions. [2023-08-30 08:31:35,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5348904267589388 [2023-08-30 08:31:35,046 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1855 transitions. [2023-08-30 08:31:35,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1855 transitions. [2023-08-30 08:31:35,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:31:35,046 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1855 transitions. [2023-08-30 08:31:35,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 309.1666666666667) internal successors, (1855), 6 states have internal predecessors, (1855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:31:35,051 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 578.0) internal successors, (4046), 7 states have internal predecessors, (4046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:31:35,051 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 578.0) internal successors, (4046), 7 states have internal predecessors, (4046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:31:35,051 INFO L175 Difference]: Start difference. First operand has 138 places, 146 transitions, 425 flow. Second operand 6 states and 1855 transitions. [2023-08-30 08:31:35,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 343 transitions, 1557 flow [2023-08-30 08:31:35,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 343 transitions, 1551 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:31:35,130 INFO L231 Difference]: Finished difference. Result has 145 places, 152 transitions, 483 flow [2023-08-30 08:31:35,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=578, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=483, PETRI_PLACES=145, PETRI_TRANSITIONS=152} [2023-08-30 08:31:35,130 INFO L281 CegarLoopForPetriNet]: 130 programPoint places, 15 predicate places. [2023-08-30 08:31:35,130 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 152 transitions, 483 flow [2023-08-30 08:31:35,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 261.6) internal successors, (1308), 5 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:31:35,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:31:35,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:31:35,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-08-30 08:31:35,131 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-30 08:31:35,132 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:31:35,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1287301109, now seen corresponding path program 1 times [2023-08-30 08:31:35,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:31:35,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828011136] [2023-08-30 08:31:35,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:31:35,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:31:35,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:31:35,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:31:35,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:31:35,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828011136] [2023-08-30 08:31:35,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828011136] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:31:35,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:31:35,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 08:31:35,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956059648] [2023-08-30 08:31:35,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:31:35,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 08:31:35,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:31:35,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 08:31:35,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-30 08:31:35,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 578 [2023-08-30 08:31:35,367 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 152 transitions, 483 flow. Second operand has 6 states, 6 states have (on average 254.33333333333334) internal successors, (1526), 6 states have internal predecessors, (1526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:31:35,367 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:31:35,367 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 578 [2023-08-30 08:31:35,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:32:03,808 INFO L130 PetriNetUnfolder]: 245388/347240 cut-off events. [2023-08-30 08:32:03,809 INFO L131 PetriNetUnfolder]: For 95898/110572 co-relation queries the response was YES. [2023-08-30 08:32:04,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 797218 conditions, 347240 events. 245388/347240 cut-off events. For 95898/110572 co-relation queries the response was YES. Maximal size of possible extension queue 13491. Compared 3004869 event pairs, 85059 based on Foata normal form. 3391/282462 useless extension candidates. Maximal degree in co-relation 645208. Up to 120312 conditions per place. [2023-08-30 08:32:06,339 INFO L137 encePairwiseOnDemand]: 566/578 looper letters, 371 selfloop transitions, 17 changer transitions 0/429 dead transitions. [2023-08-30 08:32:06,339 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 429 transitions, 2005 flow [2023-08-30 08:32:06,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 08:32:06,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 08:32:06,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2401 transitions. [2023-08-30 08:32:06,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5192474048442907 [2023-08-30 08:32:06,342 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2401 transitions. [2023-08-30 08:32:06,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2401 transitions. [2023-08-30 08:32:06,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:32:06,343 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2401 transitions. [2023-08-30 08:32:06,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 300.125) internal successors, (2401), 8 states have internal predecessors, (2401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:32:06,349 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 578.0) internal successors, (5202), 9 states have internal predecessors, (5202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:32:06,349 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 578.0) internal successors, (5202), 9 states have internal predecessors, (5202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:32:06,350 INFO L175 Difference]: Start difference. First operand has 145 places, 152 transitions, 483 flow. Second operand 8 states and 2401 transitions. [2023-08-30 08:32:06,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 429 transitions, 2005 flow [2023-08-30 08:32:07,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 429 transitions, 1991 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 08:32:07,074 INFO L231 Difference]: Finished difference. Result has 153 places, 157 transitions, 548 flow [2023-08-30 08:32:07,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=578, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=548, PETRI_PLACES=153, PETRI_TRANSITIONS=157} [2023-08-30 08:32:07,075 INFO L281 CegarLoopForPetriNet]: 130 programPoint places, 23 predicate places. [2023-08-30 08:32:07,075 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 157 transitions, 548 flow [2023-08-30 08:32:07,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 254.33333333333334) internal successors, (1526), 6 states have internal predecessors, (1526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:32:07,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:32:07,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:32:07,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-08-30 08:32:07,075 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-30 08:32:07,076 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:32:07,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1287301134, now seen corresponding path program 1 times [2023-08-30 08:32:07,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:32:07,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322897045] [2023-08-30 08:32:07,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:32:07,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:32:07,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:32:07,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:32:07,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:32:07,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322897045] [2023-08-30 08:32:07,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322897045] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:32:07,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:32:07,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:32:07,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44577633] [2023-08-30 08:32:07,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:32:07,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:32:07,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:32:07,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:32:07,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:32:07,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 282 out of 578 [2023-08-30 08:32:07,131 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 157 transitions, 548 flow. Second operand has 3 states, 3 states have (on average 286.0) internal successors, (858), 3 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:32:07,131 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:32:07,131 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 282 of 578 [2023-08-30 08:32:07,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:32:27,994 INFO L130 PetriNetUnfolder]: 152822/241120 cut-off events. [2023-08-30 08:32:27,995 INFO L131 PetriNetUnfolder]: For 63728/66326 co-relation queries the response was YES. [2023-08-30 08:32:28,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 521471 conditions, 241120 events. 152822/241120 cut-off events. For 63728/66326 co-relation queries the response was YES. Maximal size of possible extension queue 7152. Compared 2284524 event pairs, 70083 based on Foata normal form. 5075/191345 useless extension candidates. Maximal degree in co-relation 419729. Up to 142804 conditions per place. [2023-08-30 08:32:29,877 INFO L137 encePairwiseOnDemand]: 575/578 looper letters, 128 selfloop transitions, 3 changer transitions 0/205 dead transitions. [2023-08-30 08:32:29,877 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 205 transitions, 914 flow [2023-08-30 08:32:29,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:32:29,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:32:29,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 971 transitions. [2023-08-30 08:32:29,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5599769319492502 [2023-08-30 08:32:29,879 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 971 transitions. [2023-08-30 08:32:29,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 971 transitions. [2023-08-30 08:32:29,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:32:29,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 971 transitions. [2023-08-30 08:32:29,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 323.6666666666667) internal successors, (971), 3 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:32:29,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 578.0) internal successors, (2312), 4 states have internal predecessors, (2312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:32:29,881 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 578.0) internal successors, (2312), 4 states have internal predecessors, (2312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:32:29,881 INFO L175 Difference]: Start difference. First operand has 153 places, 157 transitions, 548 flow. Second operand 3 states and 971 transitions. [2023-08-30 08:32:29,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 205 transitions, 914 flow [2023-08-30 08:32:30,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 205 transitions, 896 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 08:32:30,902 INFO L231 Difference]: Finished difference. Result has 151 places, 156 transitions, 537 flow [2023-08-30 08:32:30,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=578, PETRI_DIFFERENCE_MINUEND_FLOW=521, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=537, PETRI_PLACES=151, PETRI_TRANSITIONS=156} [2023-08-30 08:32:30,903 INFO L281 CegarLoopForPetriNet]: 130 programPoint places, 21 predicate places. [2023-08-30 08:32:30,903 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 156 transitions, 537 flow [2023-08-30 08:32:30,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 286.0) internal successors, (858), 3 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:32:30,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:32:30,903 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:32:30,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-08-30 08:32:30,904 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-30 08:32:30,904 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:32:30,904 INFO L85 PathProgramCache]: Analyzing trace with hash 262559347, now seen corresponding path program 1 times [2023-08-30 08:32:30,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:32:30,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425755469] [2023-08-30 08:32:30,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:32:30,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:32:30,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:32:30,938 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 08:32:30,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:32:30,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425755469] [2023-08-30 08:32:30,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425755469] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:32:30,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:32:30,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 08:32:30,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984876201] [2023-08-30 08:32:30,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:32:30,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 08:32:30,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:32:30,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 08:32:30,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 08:32:30,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 578 [2023-08-30 08:32:30,955 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 156 transitions, 537 flow. Second operand has 4 states, 4 states have (on average 284.25) internal successors, (1137), 4 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:32:30,955 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:32:30,955 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 578 [2023-08-30 08:32:30,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:32:53,613 INFO L130 PetriNetUnfolder]: 159738/253560 cut-off events. [2023-08-30 08:32:53,613 INFO L131 PetriNetUnfolder]: For 72666/73064 co-relation queries the response was YES. [2023-08-30 08:32:54,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 555999 conditions, 253560 events. 159738/253560 cut-off events. For 72666/73064 co-relation queries the response was YES. Maximal size of possible extension queue 8021. Compared 2454201 event pairs, 46129 based on Foata normal form. 268/201530 useless extension candidates. Maximal degree in co-relation 441136. Up to 166910 conditions per place. [2023-08-30 08:32:55,698 INFO L137 encePairwiseOnDemand]: 569/578 looper letters, 200 selfloop transitions, 12 changer transitions 0/277 dead transitions. [2023-08-30 08:32:55,698 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 277 transitions, 1321 flow [2023-08-30 08:32:55,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 08:32:55,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 08:32:55,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1601 transitions. [2023-08-30 08:32:55,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5539792387543253 [2023-08-30 08:32:55,700 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1601 transitions. [2023-08-30 08:32:55,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1601 transitions. [2023-08-30 08:32:55,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:32:55,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1601 transitions. [2023-08-30 08:32:55,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 320.2) internal successors, (1601), 5 states have internal predecessors, (1601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:32:55,705 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 578.0) internal successors, (3468), 6 states have internal predecessors, (3468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:32:55,706 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 578.0) internal successors, (3468), 6 states have internal predecessors, (3468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:32:55,706 INFO L175 Difference]: Start difference. First operand has 151 places, 156 transitions, 537 flow. Second operand 5 states and 1601 transitions. [2023-08-30 08:32:55,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 277 transitions, 1321 flow [2023-08-30 08:32:57,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 277 transitions, 1315 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:32:57,265 INFO L231 Difference]: Finished difference. Result has 158 places, 162 transitions, 618 flow [2023-08-30 08:32:57,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=578, PETRI_DIFFERENCE_MINUEND_FLOW=534, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=618, PETRI_PLACES=158, PETRI_TRANSITIONS=162} [2023-08-30 08:32:57,265 INFO L281 CegarLoopForPetriNet]: 130 programPoint places, 28 predicate places. [2023-08-30 08:32:57,265 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 162 transitions, 618 flow [2023-08-30 08:32:57,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 284.25) internal successors, (1137), 4 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:32:57,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:32:57,266 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:32:57,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-08-30 08:32:57,266 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-30 08:32:57,267 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:32:57,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1918490113, now seen corresponding path program 1 times [2023-08-30 08:32:57,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:32:57,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247465195] [2023-08-30 08:32:57,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:32:57,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:32:57,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:32:57,323 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 08:32:57,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:32:57,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247465195] [2023-08-30 08:32:57,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247465195] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:32:57,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:32:57,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 08:32:57,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708453380] [2023-08-30 08:32:57,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:32:57,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 08:32:57,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:32:57,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 08:32:57,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 08:32:57,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 578 [2023-08-30 08:32:57,423 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 162 transitions, 618 flow. Second operand has 5 states, 5 states have (on average 261.8) internal successors, (1309), 5 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:32:57,423 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:32:57,423 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 578 [2023-08-30 08:32:57,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:33:46,240 INFO L130 PetriNetUnfolder]: 365516/509885 cut-off events. [2023-08-30 08:33:46,241 INFO L131 PetriNetUnfolder]: For 231153/286328 co-relation queries the response was YES. [2023-08-30 08:33:48,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1249927 conditions, 509885 events. 365516/509885 cut-off events. For 231153/286328 co-relation queries the response was YES. Maximal size of possible extension queue 19506. Compared 4463358 event pairs, 148220 based on Foata normal form. 653/432615 useless extension candidates. Maximal degree in co-relation 1030767. Up to 324690 conditions per place. [2023-08-30 08:33:50,300 INFO L137 encePairwiseOnDemand]: 567/578 looper letters, 314 selfloop transitions, 16 changer transitions 0/376 dead transitions. [2023-08-30 08:33:50,300 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 376 transitions, 2020 flow [2023-08-30 08:33:50,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 08:33:50,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 08:33:50,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1852 transitions. [2023-08-30 08:33:50,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5340253748558247 [2023-08-30 08:33:50,302 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1852 transitions. [2023-08-30 08:33:50,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1852 transitions. [2023-08-30 08:33:50,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:33:50,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1852 transitions. [2023-08-30 08:33:50,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 308.6666666666667) internal successors, (1852), 6 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:33:50,307 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 578.0) internal successors, (4046), 7 states have internal predecessors, (4046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:33:50,307 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 578.0) internal successors, (4046), 7 states have internal predecessors, (4046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:33:50,307 INFO L175 Difference]: Start difference. First operand has 158 places, 162 transitions, 618 flow. Second operand 6 states and 1852 transitions. [2023-08-30 08:33:50,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 376 transitions, 2020 flow [2023-08-30 08:34:06,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 376 transitions, 2020 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 08:34:06,828 INFO L231 Difference]: Finished difference. Result has 166 places, 170 transitions, 718 flow [2023-08-30 08:34:06,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=578, PETRI_DIFFERENCE_MINUEND_FLOW=618, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=718, PETRI_PLACES=166, PETRI_TRANSITIONS=170} [2023-08-30 08:34:06,828 INFO L281 CegarLoopForPetriNet]: 130 programPoint places, 36 predicate places. [2023-08-30 08:34:06,829 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 170 transitions, 718 flow [2023-08-30 08:34:06,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 261.8) internal successors, (1309), 5 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:34:06,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:34:06,829 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:34:06,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-08-30 08:34:06,829 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-30 08:34:06,829 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:34:06,829 INFO L85 PathProgramCache]: Analyzing trace with hash 656351385, now seen corresponding path program 1 times [2023-08-30 08:34:06,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:34:06,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201194533] [2023-08-30 08:34:06,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:34:06,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:34:06,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:34:06,859 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 08:34:06,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:34:06,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201194533] [2023-08-30 08:34:06,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201194533] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:34:06,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:34:06,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:34:06,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142897792] [2023-08-30 08:34:06,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:34:06,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:34:06,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:34:06,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:34:06,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:34:06,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 282 out of 578 [2023-08-30 08:34:06,877 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 170 transitions, 718 flow. Second operand has 3 states, 3 states have (on average 286.3333333333333) internal successors, (859), 3 states have internal predecessors, (859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:34:06,877 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:34:06,877 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 282 of 578 [2023-08-30 08:34:06,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:34:42,714 INFO L130 PetriNetUnfolder]: 210451/337770 cut-off events. [2023-08-30 08:34:42,714 INFO L131 PetriNetUnfolder]: For 123210/124225 co-relation queries the response was YES. [2023-08-30 08:34:44,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 774681 conditions, 337770 events. 210451/337770 cut-off events. For 123210/124225 co-relation queries the response was YES. Maximal size of possible extension queue 10547. Compared 3430001 event pairs, 75573 based on Foata normal form. 493/277740 useless extension candidates. Maximal degree in co-relation 636506. Up to 202687 conditions per place. [2023-08-30 08:34:45,595 INFO L137 encePairwiseOnDemand]: 575/578 looper letters, 141 selfloop transitions, 2 changer transitions 0/226 dead transitions. [2023-08-30 08:34:45,595 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 226 transitions, 1194 flow [2023-08-30 08:34:45,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:34:45,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:34:45,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 969 transitions. [2023-08-30 08:34:45,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5588235294117647 [2023-08-30 08:34:45,596 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 969 transitions. [2023-08-30 08:34:45,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 969 transitions. [2023-08-30 08:34:45,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:34:45,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 969 transitions. [2023-08-30 08:34:45,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 323.0) internal successors, (969), 3 states have internal predecessors, (969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:34:45,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 578.0) internal successors, (2312), 4 states have internal predecessors, (2312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:34:45,599 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 578.0) internal successors, (2312), 4 states have internal predecessors, (2312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:34:45,599 INFO L175 Difference]: Start difference. First operand has 166 places, 170 transitions, 718 flow. Second operand 3 states and 969 transitions. [2023-08-30 08:34:45,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 226 transitions, 1194 flow [2023-08-30 08:34:53,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 226 transitions, 1188 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:34:53,104 INFO L231 Difference]: Finished difference. Result has 167 places, 170 transitions, 720 flow [2023-08-30 08:34:53,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=578, PETRI_DIFFERENCE_MINUEND_FLOW=710, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=720, PETRI_PLACES=167, PETRI_TRANSITIONS=170} [2023-08-30 08:34:53,105 INFO L281 CegarLoopForPetriNet]: 130 programPoint places, 37 predicate places. [2023-08-30 08:34:53,105 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 170 transitions, 720 flow [2023-08-30 08:34:53,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 286.3333333333333) internal successors, (859), 3 states have internal predecessors, (859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:34:53,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:34:53,105 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:34:53,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-08-30 08:34:53,105 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-30 08:34:53,105 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:34:53,105 INFO L85 PathProgramCache]: Analyzing trace with hash 656351422, now seen corresponding path program 1 times [2023-08-30 08:34:53,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:34:53,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063276387] [2023-08-30 08:34:53,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:34:53,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:34:53,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:34:53,167 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 08:34:53,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:34:53,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063276387] [2023-08-30 08:34:53,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063276387] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:34:53,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:34:53,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 08:34:53,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975526112] [2023-08-30 08:34:53,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:34:53,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 08:34:53,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:34:53,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 08:34:53,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-30 08:34:53,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 578 [2023-08-30 08:34:53,342 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 170 transitions, 720 flow. Second operand has 6 states, 6 states have (on average 254.5) internal successors, (1527), 6 states have internal predecessors, (1527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:34:53,342 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:34:53,342 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 578 [2023-08-30 08:34:53,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:35:47,812 INFO L130 PetriNetUnfolder]: 365113/512206 cut-off events. [2023-08-30 08:35:47,812 INFO L131 PetriNetUnfolder]: For 275466/297909 co-relation queries the response was YES. [2023-08-30 08:35:50,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1302903 conditions, 512206 events. 365113/512206 cut-off events. For 275466/297909 co-relation queries the response was YES. Maximal size of possible extension queue 18587. Compared 4525647 event pairs, 142095 based on Foata normal form. 653/445412 useless extension candidates. Maximal degree in co-relation 1076387. Up to 174612 conditions per place.