./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/chl-node-subst.wvr.c --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/weaver/chl-node-subst.wvr.c -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 97832baecac12bd55b66fbc3c6c38a25db85e9dc70cfa8f34b5e7a9e59086f06 --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 10:59:49,138 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 10:59:49,140 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 10:59:49,170 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 10:59:49,170 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 10:59:49,171 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 10:59:49,172 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 10:59:49,173 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 10:59:49,175 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 10:59:49,175 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 10:59:49,176 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 10:59:49,177 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 10:59:49,177 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 10:59:49,184 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 10:59:49,185 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 10:59:49,187 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 10:59:49,188 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 10:59:49,189 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 10:59:49,191 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 10:59:49,193 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 10:59:49,196 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 10:59:49,201 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 10:59:49,202 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 10:59:49,209 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 10:59:49,212 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 10:59:49,215 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 10:59:49,216 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 10:59:49,217 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 10:59:49,218 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 10:59:49,220 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 10:59:49,220 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 10:59:49,221 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 10:59:49,222 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 10:59:49,223 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 10:59:49,224 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 10:59:49,225 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 10:59:49,225 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 10:59:49,226 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 10:59:49,226 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 10:59:49,226 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 10:59:49,227 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 10:59:49,228 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 10:59:49,262 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 10:59:49,262 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 10:59:49,263 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 10:59:49,263 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 10:59:49,264 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 10:59:49,264 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 10:59:49,265 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 10:59:49,265 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 10:59:49,265 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 10:59:49,266 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 10:59:49,266 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 10:59:49,266 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 10:59:49,267 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 10:59:49,267 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 10:59:49,267 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 10:59:49,267 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 10:59:49,267 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 10:59:49,268 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 10:59:49,268 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 10:59:49,268 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 10:59:49,268 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 10:59:49,268 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 10:59:49,269 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 10:59:49,269 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 10:59:49,269 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 10:59:49,269 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 10:59:49,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 10:59:49,270 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 10:59:49,270 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 10:59:49,270 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 10:59:49,270 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 10:59:49,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 10:59:49,271 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 10:59:49,271 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 10:59:49,271 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 10:59:49,271 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 10:59:49,271 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 10:59:49,272 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97832baecac12bd55b66fbc3c6c38a25db85e9dc70cfa8f34b5e7a9e59086f06 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 10:59:49,581 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 10:59:49,601 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 10:59:49,603 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 10:59:49,604 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 10:59:49,604 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 10:59:49,606 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-node-subst.wvr.c [2023-08-30 10:59:51,219 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 10:59:51,421 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 10:59:51,422 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-subst.wvr.c [2023-08-30 10:59:51,428 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71639a274/52c018e14cad4db99d22f8dff89d32b9/FLAG5d246817a [2023-08-30 10:59:51,441 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71639a274/52c018e14cad4db99d22f8dff89d32b9 [2023-08-30 10:59:51,443 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 10:59:51,444 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 10:59:51,445 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 10:59:51,445 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 10:59:51,448 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 10:59:51,448 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:59:51" (1/1) ... [2023-08-30 10:59:51,449 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e7064f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:59:51, skipping insertion in model container [2023-08-30 10:59:51,449 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:59:51" (1/1) ... [2023-08-30 10:59:51,455 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 10:59:51,473 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 10:59:51,668 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-subst.wvr.c[3996,4009] [2023-08-30 10:59:51,697 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 10:59:51,710 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 10:59:51,747 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-subst.wvr.c[3996,4009] [2023-08-30 10:59:51,764 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 10:59:51,782 INFO L208 MainTranslator]: Completed translation [2023-08-30 10:59:51,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:59:51 WrapperNode [2023-08-30 10:59:51,783 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 10:59:51,784 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 10:59:51,785 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 10:59:51,785 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 10:59:51,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:59:51" (1/1) ... [2023-08-30 10:59:51,813 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:59:51" (1/1) ... [2023-08-30 10:59:51,875 INFO L138 Inliner]: procedures = 27, calls = 66, calls flagged for inlining = 22, calls inlined = 34, statements flattened = 497 [2023-08-30 10:59:51,876 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 10:59:51,877 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 10:59:51,877 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 10:59:51,877 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 10:59:51,884 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:59:51" (1/1) ... [2023-08-30 10:59:51,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:59:51" (1/1) ... [2023-08-30 10:59:51,898 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:59:51" (1/1) ... [2023-08-30 10:59:51,900 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:59:51" (1/1) ... [2023-08-30 10:59:51,922 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:59:51" (1/1) ... [2023-08-30 10:59:51,926 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:59:51" (1/1) ... [2023-08-30 10:59:51,928 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:59:51" (1/1) ... [2023-08-30 10:59:51,930 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:59:51" (1/1) ... [2023-08-30 10:59:51,933 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 10:59:51,934 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 10:59:51,934 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 10:59:51,935 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 10:59:51,935 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:59:51" (1/1) ... [2023-08-30 10:59:51,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 10:59:51,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:59:51,966 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 10:59:51,997 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 10:59:52,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 10:59:52,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 10:59:52,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 10:59:52,014 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 10:59:52,014 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 10:59:52,014 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 10:59:52,015 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 10:59:52,015 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 10:59:52,015 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 10:59:52,015 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 10:59:52,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 10:59:52,015 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 10:59:52,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 10:59:52,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 10:59:52,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 10:59:52,017 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 10:59:52,202 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 10:59:52,204 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 10:59:52,839 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 10:59:52,863 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 10:59:52,867 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-30 10:59:52,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:59:52 BoogieIcfgContainer [2023-08-30 10:59:52,870 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 10:59:52,871 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 10:59:52,872 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 10:59:52,874 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 10:59:52,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 10:59:51" (1/3) ... [2023-08-30 10:59:52,875 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@684b74ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:59:52, skipping insertion in model container [2023-08-30 10:59:52,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:59:51" (2/3) ... [2023-08-30 10:59:52,875 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@684b74ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:59:52, skipping insertion in model container [2023-08-30 10:59:52,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:59:52" (3/3) ... [2023-08-30 10:59:52,876 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-subst.wvr.c [2023-08-30 10:59:52,882 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 10:59:52,889 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 10:59:52,889 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2023-08-30 10:59:52,889 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 10:59:53,050 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 10:59:53,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 577 places, 614 transitions, 1252 flow [2023-08-30 10:59:53,289 INFO L130 PetriNetUnfolder]: 47/611 cut-off events. [2023-08-30 10:59:53,290 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 10:59:53,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 624 conditions, 611 events. 47/611 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1065 event pairs, 0 based on Foata normal form. 0/522 useless extension candidates. Maximal degree in co-relation 517. Up to 2 conditions per place. [2023-08-30 10:59:53,300 INFO L82 GeneralOperation]: Start removeDead. Operand has 577 places, 614 transitions, 1252 flow [2023-08-30 10:59:53,314 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 557 places, 593 transitions, 1201 flow [2023-08-30 10:59:53,321 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:59:53,333 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 557 places, 593 transitions, 1201 flow [2023-08-30 10:59:53,339 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 557 places, 593 transitions, 1201 flow [2023-08-30 10:59:53,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 557 places, 593 transitions, 1201 flow [2023-08-30 10:59:53,483 INFO L130 PetriNetUnfolder]: 46/593 cut-off events. [2023-08-30 10:59:53,483 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 10:59:53,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 605 conditions, 593 events. 46/593 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1064 event pairs, 0 based on Foata normal form. 0/505 useless extension candidates. Maximal degree in co-relation 517. Up to 2 conditions per place. [2023-08-30 10:59:53,503 INFO L119 LiptonReduction]: Number of co-enabled transitions 34440 [2023-08-30 11:00:19,867 INFO L134 LiptonReduction]: Checked pairs total: 44964 [2023-08-30 11:00:19,868 INFO L136 LiptonReduction]: Total number of compositions: 761 [2023-08-30 11:00:19,902 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 11:00:19,907 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;@1a9b27a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 11:00:19,907 INFO L358 AbstractCegarLoop]: Starting to check reachability of 63 error locations. [2023-08-30 11:00:19,909 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-30 11:00:19,909 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 11:00:19,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:00:19,910 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 11:00:19,910 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-08-30 11:00:19,914 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:00:19,929 INFO L85 PathProgramCache]: Analyzing trace with hash 2435, now seen corresponding path program 1 times [2023-08-30 11:00:19,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:00:19,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590116169] [2023-08-30 11:00:19,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:00:19,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:00:20,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:00:20,056 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 11:00:20,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:00:20,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590116169] [2023-08-30 11:00:20,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590116169] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:00:20,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:00:20,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 11:00:20,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562485956] [2023-08-30 11:00:20,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:00:20,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 11:00:20,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:00:20,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 11:00:20,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 11:00:20,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 578 out of 1375 [2023-08-30 11:00:20,109 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 81 transitions, 177 flow. Second operand has 2 states, 2 states have (on average 578.5) internal successors, (1157), 2 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:20,110 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:00:20,110 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 578 of 1375 [2023-08-30 11:00:20,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:00:21,161 INFO L130 PetriNetUnfolder]: 4309/6198 cut-off events. [2023-08-30 11:00:21,162 INFO L131 PetriNetUnfolder]: For 296/296 co-relation queries the response was YES. [2023-08-30 11:00:21,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12739 conditions, 6198 events. 4309/6198 cut-off events. For 296/296 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 29847 event pairs, 3825 based on Foata normal form. 0/3340 useless extension candidates. Maximal degree in co-relation 11796. Up to 6199 conditions per place. [2023-08-30 11:00:21,194 INFO L137 encePairwiseOnDemand]: 1367/1375 looper letters, 73 selfloop transitions, 0 changer transitions 0/73 dead transitions. [2023-08-30 11:00:21,194 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 73 transitions, 307 flow [2023-08-30 11:00:21,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 11:00:21,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 11:00:21,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1237 transitions. [2023-08-30 11:00:21,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44981818181818184 [2023-08-30 11:00:21,217 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1237 transitions. [2023-08-30 11:00:21,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1237 transitions. [2023-08-30 11:00:21,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:00:21,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1237 transitions. [2023-08-30 11:00:21,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 618.5) internal successors, (1237), 2 states have internal predecessors, (1237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:21,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 1375.0) internal successors, (4125), 3 states have internal predecessors, (4125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:21,241 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 1375.0) internal successors, (4125), 3 states have internal predecessors, (4125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:21,242 INFO L175 Difference]: Start difference. First operand has 82 places, 81 transitions, 177 flow. Second operand 2 states and 1237 transitions. [2023-08-30 11:00:21,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 73 transitions, 307 flow [2023-08-30 11:00:21,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 73 transitions, 298 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 11:00:21,261 INFO L231 Difference]: Finished difference. Result has 70 places, 73 transitions, 152 flow [2023-08-30 11:00:21,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1375, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=152, PETRI_PLACES=70, PETRI_TRANSITIONS=73} [2023-08-30 11:00:21,266 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -12 predicate places. [2023-08-30 11:00:21,267 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 73 transitions, 152 flow [2023-08-30 11:00:21,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 578.5) internal successors, (1157), 2 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:21,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:00:21,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 11:00:21,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 11:00:21,272 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-08-30 11:00:21,280 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:00:21,280 INFO L85 PathProgramCache]: Analyzing trace with hash 77732, now seen corresponding path program 1 times [2023-08-30 11:00:21,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:00:21,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195067676] [2023-08-30 11:00:21,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:00:21,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:00:21,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:00:21,449 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 11:00:21,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:00:21,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195067676] [2023-08-30 11:00:21,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195067676] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:00:21,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:00:21,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:00:21,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251681894] [2023-08-30 11:00:21,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:00:21,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:00:21,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:00:21,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:00:21,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:00:21,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 570 out of 1375 [2023-08-30 11:00:21,485 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 73 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 570.6666666666666) internal successors, (1712), 3 states have internal predecessors, (1712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:21,485 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:00:21,485 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 570 of 1375 [2023-08-30 11:00:21,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:00:22,462 INFO L130 PetriNetUnfolder]: 4309/6196 cut-off events. [2023-08-30 11:00:22,462 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-30 11:00:22,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12649 conditions, 6196 events. 4309/6196 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 29844 event pairs, 3825 based on Foata normal form. 0/3340 useless extension candidates. Maximal degree in co-relation 12646. Up to 6196 conditions per place. [2023-08-30 11:00:22,496 INFO L137 encePairwiseOnDemand]: 1372/1375 looper letters, 70 selfloop transitions, 1 changer transitions 0/71 dead transitions. [2023-08-30 11:00:22,496 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 71 transitions, 290 flow [2023-08-30 11:00:22,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:00:22,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:00:22,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1783 transitions. [2023-08-30 11:00:22,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43224242424242426 [2023-08-30 11:00:22,502 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1783 transitions. [2023-08-30 11:00:22,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1783 transitions. [2023-08-30 11:00:22,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:00:22,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1783 transitions. [2023-08-30 11:00:22,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 594.3333333333334) internal successors, (1783), 3 states have internal predecessors, (1783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:22,514 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:22,516 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:22,517 INFO L175 Difference]: Start difference. First operand has 70 places, 73 transitions, 152 flow. Second operand 3 states and 1783 transitions. [2023-08-30 11:00:22,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 71 transitions, 290 flow [2023-08-30 11:00:22,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 71 transitions, 290 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 11:00:22,520 INFO L231 Difference]: Finished difference. Result has 70 places, 71 transitions, 150 flow [2023-08-30 11:00:22,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1375, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=70, PETRI_TRANSITIONS=71} [2023-08-30 11:00:22,521 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -12 predicate places. [2023-08-30 11:00:22,521 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 71 transitions, 150 flow [2023-08-30 11:00:22,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 570.6666666666666) internal successors, (1712), 3 states have internal predecessors, (1712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:22,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:00:22,522 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 11:00:22,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 11:00:22,523 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-08-30 11:00:22,525 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:00:22,525 INFO L85 PathProgramCache]: Analyzing trace with hash 77731, now seen corresponding path program 1 times [2023-08-30 11:00:22,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:00:22,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264765938] [2023-08-30 11:00:22,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:00:22,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:00:22,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:00:22,664 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 11:00:22,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:00:22,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264765938] [2023-08-30 11:00:22,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264765938] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:00:22,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:00:22,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:00:22,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005015708] [2023-08-30 11:00:22,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:00:22,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:00:22,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:00:22,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:00:22,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:00:22,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 572 out of 1375 [2023-08-30 11:00:22,695 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 71 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 572.6666666666666) internal successors, (1718), 3 states have internal predecessors, (1718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:22,695 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:00:22,695 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 572 of 1375 [2023-08-30 11:00:22,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:00:23,686 INFO L130 PetriNetUnfolder]: 4309/6194 cut-off events. [2023-08-30 11:00:23,686 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-30 11:00:23,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12647 conditions, 6194 events. 4309/6194 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 29840 event pairs, 3825 based on Foata normal form. 0/3340 useless extension candidates. Maximal degree in co-relation 12643. Up to 6194 conditions per place. [2023-08-30 11:00:23,716 INFO L137 encePairwiseOnDemand]: 1372/1375 looper letters, 68 selfloop transitions, 1 changer transitions 0/69 dead transitions. [2023-08-30 11:00:23,717 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 69 transitions, 284 flow [2023-08-30 11:00:23,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:00:23,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:00:23,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1787 transitions. [2023-08-30 11:00:23,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4332121212121212 [2023-08-30 11:00:23,722 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1787 transitions. [2023-08-30 11:00:23,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1787 transitions. [2023-08-30 11:00:23,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:00:23,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1787 transitions. [2023-08-30 11:00:23,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 595.6666666666666) internal successors, (1787), 3 states have internal predecessors, (1787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:23,734 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:23,737 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:23,737 INFO L175 Difference]: Start difference. First operand has 70 places, 71 transitions, 150 flow. Second operand 3 states and 1787 transitions. [2023-08-30 11:00:23,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 69 transitions, 284 flow [2023-08-30 11:00:23,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 69 transitions, 283 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:00:23,739 INFO L231 Difference]: Finished difference. Result has 69 places, 69 transitions, 147 flow [2023-08-30 11:00:23,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1375, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=147, PETRI_PLACES=69, PETRI_TRANSITIONS=69} [2023-08-30 11:00:23,741 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -13 predicate places. [2023-08-30 11:00:23,745 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 69 transitions, 147 flow [2023-08-30 11:00:23,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 572.6666666666666) internal successors, (1718), 3 states have internal predecessors, (1718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:23,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:00:23,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 11:00:23,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 11:00:23,748 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-08-30 11:00:23,748 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:00:23,748 INFO L85 PathProgramCache]: Analyzing trace with hash 77639, now seen corresponding path program 1 times [2023-08-30 11:00:23,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:00:23,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691600851] [2023-08-30 11:00:23,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:00:23,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:00:23,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:00:23,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:00:23,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:00:23,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691600851] [2023-08-30 11:00:23,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691600851] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:00:23,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:00:23,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:00:23,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884992466] [2023-08-30 11:00:23,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:00:23,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:00:23,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:00:23,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:00:23,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:00:23,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 569 out of 1375 [2023-08-30 11:00:23,848 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 69 transitions, 147 flow. Second operand has 3 states, 3 states have (on average 569.6666666666666) internal successors, (1709), 3 states have internal predecessors, (1709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:23,848 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:00:23,849 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 569 of 1375 [2023-08-30 11:00:23,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:00:25,253 INFO L130 PetriNetUnfolder]: 8617/12381 cut-off events. [2023-08-30 11:00:25,254 INFO L131 PetriNetUnfolder]: For 96/96 co-relation queries the response was YES. [2023-08-30 11:00:25,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25276 conditions, 12381 events. 8617/12381 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 66718 event pairs, 7650 based on Foata normal form. 0/6679 useless extension candidates. Maximal degree in co-relation 25272. Up to 6195 conditions per place. [2023-08-30 11:00:25,302 INFO L137 encePairwiseOnDemand]: 1363/1375 looper letters, 125 selfloop transitions, 6 changer transitions 0/131 dead transitions. [2023-08-30 11:00:25,302 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 131 transitions, 539 flow [2023-08-30 11:00:25,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:00:25,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:00:25,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1844 transitions. [2023-08-30 11:00:25,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44703030303030306 [2023-08-30 11:00:25,311 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1844 transitions. [2023-08-30 11:00:25,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1844 transitions. [2023-08-30 11:00:25,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:00:25,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1844 transitions. [2023-08-30 11:00:25,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 614.6666666666666) internal successors, (1844), 3 states have internal predecessors, (1844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:25,323 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:25,326 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:25,326 INFO L175 Difference]: Start difference. First operand has 69 places, 69 transitions, 147 flow. Second operand 3 states and 1844 transitions. [2023-08-30 11:00:25,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 131 transitions, 539 flow [2023-08-30 11:00:25,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 131 transitions, 538 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:00:25,332 INFO L231 Difference]: Finished difference. Result has 72 places, 74 transitions, 202 flow [2023-08-30 11:00:25,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1375, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=202, PETRI_PLACES=72, PETRI_TRANSITIONS=74} [2023-08-30 11:00:25,334 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -10 predicate places. [2023-08-30 11:00:25,334 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 74 transitions, 202 flow [2023-08-30 11:00:25,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 569.6666666666666) internal successors, (1709), 3 states have internal predecessors, (1709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:25,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:00:25,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 11:00:25,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 11:00:25,338 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-08-30 11:00:25,338 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:00:25,338 INFO L85 PathProgramCache]: Analyzing trace with hash 2412280, now seen corresponding path program 1 times [2023-08-30 11:00:25,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:00:25,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433176921] [2023-08-30 11:00:25,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:00:25,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:00:25,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:00:25,403 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:00:25,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:00:25,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433176921] [2023-08-30 11:00:25,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433176921] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:00:25,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:00:25,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:00:25,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834584653] [2023-08-30 11:00:25,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:00:25,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:00:25,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:00:25,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:00:25,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:00:25,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 569 out of 1375 [2023-08-30 11:00:25,432 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 74 transitions, 202 flow. Second operand has 3 states, 3 states have (on average 570.0) internal successors, (1710), 3 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:25,433 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:00:25,433 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 569 of 1375 [2023-08-30 11:00:25,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:00:27,031 INFO L130 PetriNetUnfolder]: 8617/12378 cut-off events. [2023-08-30 11:00:27,031 INFO L131 PetriNetUnfolder]: For 96/96 co-relation queries the response was YES. [2023-08-30 11:00:27,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25291 conditions, 12378 events. 8617/12378 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 66615 event pairs, 7650 based on Foata normal form. 0/6687 useless extension candidates. Maximal degree in co-relation 25286. Up to 12378 conditions per place. [2023-08-30 11:00:27,085 INFO L137 encePairwiseOnDemand]: 1371/1375 looper letters, 70 selfloop transitions, 1 changer transitions 0/71 dead transitions. [2023-08-30 11:00:27,086 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 71 transitions, 332 flow [2023-08-30 11:00:27,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:00:27,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:00:27,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1776 transitions. [2023-08-30 11:00:27,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43054545454545456 [2023-08-30 11:00:27,091 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1776 transitions. [2023-08-30 11:00:27,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1776 transitions. [2023-08-30 11:00:27,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:00:27,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1776 transitions. [2023-08-30 11:00:27,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 592.0) internal successors, (1776), 3 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:27,102 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:27,104 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:27,104 INFO L175 Difference]: Start difference. First operand has 72 places, 74 transitions, 202 flow. Second operand 3 states and 1776 transitions. [2023-08-30 11:00:27,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 71 transitions, 332 flow [2023-08-30 11:00:27,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 71 transitions, 320 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:00:27,106 INFO L231 Difference]: Finished difference. Result has 69 places, 71 transitions, 180 flow [2023-08-30 11:00:27,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1375, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=69, PETRI_TRANSITIONS=71} [2023-08-30 11:00:27,109 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -13 predicate places. [2023-08-30 11:00:27,110 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 71 transitions, 180 flow [2023-08-30 11:00:27,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 570.0) internal successors, (1710), 3 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:27,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:00:27,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 11:00:27,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 11:00:27,111 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-08-30 11:00:27,111 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:00:27,112 INFO L85 PathProgramCache]: Analyzing trace with hash 2414611, now seen corresponding path program 1 times [2023-08-30 11:00:27,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:00:27,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792062827] [2023-08-30 11:00:27,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:00:27,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:00:27,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:00:27,167 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 11:00:27,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:00:27,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792062827] [2023-08-30 11:00:27,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792062827] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:00:27,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:00:27,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:00:27,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849683787] [2023-08-30 11:00:27,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:00:27,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:00:27,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:00:27,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:00:27,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:00:27,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 572 out of 1375 [2023-08-30 11:00:27,199 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 71 transitions, 180 flow. Second operand has 3 states, 3 states have (on average 573.0) internal successors, (1719), 3 states have internal predecessors, (1719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:27,199 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:00:27,199 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 572 of 1375 [2023-08-30 11:00:27,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:00:28,401 INFO L130 PetriNetUnfolder]: 8617/12374 cut-off events. [2023-08-30 11:00:28,401 INFO L131 PetriNetUnfolder]: For 96/96 co-relation queries the response was YES. [2023-08-30 11:00:28,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25278 conditions, 12374 events. 8617/12374 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 66587 event pairs, 7650 based on Foata normal form. 0/6683 useless extension candidates. Maximal degree in co-relation 25273. Up to 12374 conditions per place. [2023-08-30 11:00:28,450 INFO L137 encePairwiseOnDemand]: 1372/1375 looper letters, 68 selfloop transitions, 1 changer transitions 0/69 dead transitions. [2023-08-30 11:00:28,451 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 69 transitions, 314 flow [2023-08-30 11:00:28,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:00:28,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:00:28,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1782 transitions. [2023-08-30 11:00:28,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.432 [2023-08-30 11:00:28,456 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1782 transitions. [2023-08-30 11:00:28,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1782 transitions. [2023-08-30 11:00:28,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:00:28,458 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1782 transitions. [2023-08-30 11:00:28,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 594.0) internal successors, (1782), 3 states have internal predecessors, (1782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:28,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:28,467 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:28,468 INFO L175 Difference]: Start difference. First operand has 69 places, 71 transitions, 180 flow. Second operand 3 states and 1782 transitions. [2023-08-30 11:00:28,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 69 transitions, 314 flow [2023-08-30 11:00:28,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 69 transitions, 313 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:00:28,469 INFO L231 Difference]: Finished difference. Result has 68 places, 69 transitions, 177 flow [2023-08-30 11:00:28,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1375, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=177, PETRI_PLACES=68, PETRI_TRANSITIONS=69} [2023-08-30 11:00:28,470 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -14 predicate places. [2023-08-30 11:00:28,471 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 69 transitions, 177 flow [2023-08-30 11:00:28,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 573.0) internal successors, (1719), 3 states have internal predecessors, (1719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:28,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:00:28,472 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 11:00:28,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 11:00:28,472 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-08-30 11:00:28,472 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:00:28,472 INFO L85 PathProgramCache]: Analyzing trace with hash 2414678, now seen corresponding path program 1 times [2023-08-30 11:00:28,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:00:28,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627567879] [2023-08-30 11:00:28,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:00:28,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:00:28,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:00:28,508 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 11:00:28,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:00:28,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627567879] [2023-08-30 11:00:28,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627567879] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:00:28,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:00:28,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:00:28,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159152394] [2023-08-30 11:00:28,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:00:28,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:00:28,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:00:28,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:00:28,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:00:28,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 570 out of 1375 [2023-08-30 11:00:28,540 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 69 transitions, 177 flow. Second operand has 3 states, 3 states have (on average 571.0) internal successors, (1713), 3 states have internal predecessors, (1713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:28,541 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:00:28,541 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 570 of 1375 [2023-08-30 11:00:28,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:00:29,937 INFO L130 PetriNetUnfolder]: 8617/12370 cut-off events. [2023-08-30 11:00:29,937 INFO L131 PetriNetUnfolder]: For 96/96 co-relation queries the response was YES. [2023-08-30 11:00:29,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25271 conditions, 12370 events. 8617/12370 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 66550 event pairs, 7650 based on Foata normal form. 2/6683 useless extension candidates. Maximal degree in co-relation 25266. Up to 12370 conditions per place. [2023-08-30 11:00:29,998 INFO L137 encePairwiseOnDemand]: 1372/1375 looper letters, 66 selfloop transitions, 1 changer transitions 0/67 dead transitions. [2023-08-30 11:00:29,999 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 67 transitions, 307 flow [2023-08-30 11:00:29,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:00:29,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:00:30,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1774 transitions. [2023-08-30 11:00:30,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4300606060606061 [2023-08-30 11:00:30,005 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1774 transitions. [2023-08-30 11:00:30,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1774 transitions. [2023-08-30 11:00:30,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:00:30,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1774 transitions. [2023-08-30 11:00:30,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 591.3333333333334) internal successors, (1774), 3 states have internal predecessors, (1774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:30,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:30,017 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:30,017 INFO L175 Difference]: Start difference. First operand has 68 places, 69 transitions, 177 flow. Second operand 3 states and 1774 transitions. [2023-08-30 11:00:30,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 67 transitions, 307 flow [2023-08-30 11:00:30,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 67 transitions, 306 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:00:30,020 INFO L231 Difference]: Finished difference. Result has 67 places, 67 transitions, 174 flow [2023-08-30 11:00:30,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1375, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=67, PETRI_TRANSITIONS=67} [2023-08-30 11:00:30,020 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -15 predicate places. [2023-08-30 11:00:30,021 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 67 transitions, 174 flow [2023-08-30 11:00:30,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 571.0) internal successors, (1713), 3 states have internal predecessors, (1713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:30,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:00:30,022 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 11:00:30,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 11:00:30,022 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-08-30 11:00:30,022 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:00:30,023 INFO L85 PathProgramCache]: Analyzing trace with hash 2412279, now seen corresponding path program 1 times [2023-08-30 11:00:30,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:00:30,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427729878] [2023-08-30 11:00:30,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:00:30,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:00:30,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:00:30,091 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:00:30,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:00:30,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427729878] [2023-08-30 11:00:30,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427729878] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:00:30,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529800446] [2023-08-30 11:00:30,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:00:30,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:00:30,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:00:30,101 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 11:00:30,102 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 11:00:30,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:00:30,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:00:30,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:00:30,274 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:00:30,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:00:30,289 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:00:30,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [529800446] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:00:30,290 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:00:30,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 11:00:30,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114106601] [2023-08-30 11:00:30,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:00:30,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 11:00:30,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:00:30,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 11:00:30,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 11:00:30,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 569 out of 1375 [2023-08-30 11:00:30,385 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 67 transitions, 174 flow. Second operand has 7 states, 7 states have (on average 570.1428571428571) internal successors, (3991), 7 states have internal predecessors, (3991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:30,385 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:00:30,386 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 569 of 1375 [2023-08-30 11:00:30,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:00:33,791 INFO L130 PetriNetUnfolder]: 21541/30919 cut-off events. [2023-08-30 11:00:33,791 INFO L131 PetriNetUnfolder]: For 240/240 co-relation queries the response was YES. [2023-08-30 11:00:33,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63147 conditions, 30919 events. 21541/30919 cut-off events. For 240/240 co-relation queries the response was YES. Maximal size of possible extension queue 1104. Compared 186755 event pairs, 19125 based on Foata normal form. 0/16701 useless extension candidates. Maximal degree in co-relation 63142. Up to 6189 conditions per place. [2023-08-30 11:00:33,944 INFO L137 encePairwiseOnDemand]: 1366/1375 looper letters, 273 selfloop transitions, 21 changer transitions 0/294 dead transitions. [2023-08-30 11:00:33,945 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 294 transitions, 1270 flow [2023-08-30 11:00:33,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 11:00:33,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 11:00:33,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3717 transitions. [2023-08-30 11:00:33,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4505454545454545 [2023-08-30 11:00:33,954 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3717 transitions. [2023-08-30 11:00:33,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3717 transitions. [2023-08-30 11:00:33,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:00:33,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3717 transitions. [2023-08-30 11:00:33,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 619.5) internal successors, (3717), 6 states have internal predecessors, (3717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:33,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1375.0) internal successors, (9625), 7 states have internal predecessors, (9625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:33,974 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1375.0) internal successors, (9625), 7 states have internal predecessors, (9625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:33,974 INFO L175 Difference]: Start difference. First operand has 67 places, 67 transitions, 174 flow. Second operand 6 states and 3717 transitions. [2023-08-30 11:00:33,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 294 transitions, 1270 flow [2023-08-30 11:00:33,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 294 transitions, 1269 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:00:33,979 INFO L231 Difference]: Finished difference. Result has 74 places, 82 transitions, 323 flow [2023-08-30 11:00:33,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1375, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=323, PETRI_PLACES=74, PETRI_TRANSITIONS=82} [2023-08-30 11:00:33,980 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -8 predicate places. [2023-08-30 11:00:33,980 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 82 transitions, 323 flow [2023-08-30 11:00:33,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 570.1428571428571) internal successors, (3991), 7 states have internal predecessors, (3991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:33,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:00:33,981 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 11:00:33,987 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 11:00:34,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:00:34,187 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-08-30 11:00:34,188 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:00:34,188 INFO L85 PathProgramCache]: Analyzing trace with hash 74862323, now seen corresponding path program 1 times [2023-08-30 11:00:34,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:00:34,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214398766] [2023-08-30 11:00:34,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:00:34,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:00:34,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:00:34,233 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 11:00:34,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:00:34,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214398766] [2023-08-30 11:00:34,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214398766] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:00:34,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:00:34,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:00:34,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820571] [2023-08-30 11:00:34,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:00:34,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:00:34,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:00:34,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:00:34,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:00:34,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 572 out of 1375 [2023-08-30 11:00:34,261 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 82 transitions, 323 flow. Second operand has 3 states, 3 states have (on average 573.3333333333334) internal successors, (1720), 3 states have internal predecessors, (1720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:34,261 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:00:34,261 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 572 of 1375 [2023-08-30 11:00:34,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:00:37,513 INFO L130 PetriNetUnfolder]: 21541/30914 cut-off events. [2023-08-30 11:00:37,513 INFO L131 PetriNetUnfolder]: For 245/245 co-relation queries the response was YES. [2023-08-30 11:00:37,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63188 conditions, 30914 events. 21541/30914 cut-off events. For 245/245 co-relation queries the response was YES. Maximal size of possible extension queue 1129. Compared 188536 event pairs, 19125 based on Foata normal form. 0/16710 useless extension candidates. Maximal degree in co-relation 63180. Up to 30914 conditions per place. [2023-08-30 11:00:37,689 INFO L137 encePairwiseOnDemand]: 1373/1375 looper letters, 80 selfloop transitions, 1 changer transitions 0/81 dead transitions. [2023-08-30 11:00:37,689 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 81 transitions, 483 flow [2023-08-30 11:00:37,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:00:37,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:00:37,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1778 transitions. [2023-08-30 11:00:37,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43103030303030304 [2023-08-30 11:00:37,694 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1778 transitions. [2023-08-30 11:00:37,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1778 transitions. [2023-08-30 11:00:37,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:00:37,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1778 transitions. [2023-08-30 11:00:37,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 592.6666666666666) internal successors, (1778), 3 states have internal predecessors, (1778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:37,704 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:37,705 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:37,705 INFO L175 Difference]: Start difference. First operand has 74 places, 82 transitions, 323 flow. Second operand 3 states and 1778 transitions. [2023-08-30 11:00:37,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 81 transitions, 483 flow [2023-08-30 11:00:37,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 81 transitions, 453 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-08-30 11:00:37,708 INFO L231 Difference]: Finished difference. Result has 74 places, 81 transitions, 293 flow [2023-08-30 11:00:37,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1375, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=293, PETRI_PLACES=74, PETRI_TRANSITIONS=81} [2023-08-30 11:00:37,709 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -8 predicate places. [2023-08-30 11:00:37,709 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 81 transitions, 293 flow [2023-08-30 11:00:37,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 573.3333333333334) internal successors, (1720), 3 states have internal predecessors, (1720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:37,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:00:37,710 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 11:00:37,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 11:00:37,710 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-08-30 11:00:37,711 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:00:37,711 INFO L85 PathProgramCache]: Analyzing trace with hash 74862322, now seen corresponding path program 1 times [2023-08-30 11:00:37,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:00:37,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28839291] [2023-08-30 11:00:37,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:00:37,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:00:37,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:00:37,751 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 11:00:37,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:00:37,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28839291] [2023-08-30 11:00:37,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28839291] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:00:37,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:00:37,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:00:37,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210404965] [2023-08-30 11:00:37,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:00:37,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:00:37,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:00:37,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:00:37,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:00:37,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 570 out of 1375 [2023-08-30 11:00:37,780 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 81 transitions, 293 flow. Second operand has 3 states, 3 states have (on average 571.3333333333334) internal successors, (1714), 3 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:37,780 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:00:37,780 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 570 of 1375 [2023-08-30 11:00:37,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:00:40,849 INFO L130 PetriNetUnfolder]: 21541/30909 cut-off events. [2023-08-30 11:00:40,849 INFO L131 PetriNetUnfolder]: For 249/249 co-relation queries the response was YES. [2023-08-30 11:00:40,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63162 conditions, 30909 events. 21541/30909 cut-off events. For 249/249 co-relation queries the response was YES. Maximal size of possible extension queue 1129. Compared 188538 event pairs, 19125 based on Foata normal form. 0/16712 useless extension candidates. Maximal degree in co-relation 63153. Up to 30909 conditions per place. [2023-08-30 11:00:40,990 INFO L137 encePairwiseOnDemand]: 1373/1375 looper letters, 79 selfloop transitions, 1 changer transitions 0/80 dead transitions. [2023-08-30 11:00:40,990 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 80 transitions, 451 flow [2023-08-30 11:00:40,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:00:40,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:00:40,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1771 transitions. [2023-08-30 11:00:40,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42933333333333334 [2023-08-30 11:00:40,994 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1771 transitions. [2023-08-30 11:00:40,994 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1771 transitions. [2023-08-30 11:00:40,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:00:40,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1771 transitions. [2023-08-30 11:00:40,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 590.3333333333334) internal successors, (1771), 3 states have internal predecessors, (1771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:41,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:41,003 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:41,004 INFO L175 Difference]: Start difference. First operand has 74 places, 81 transitions, 293 flow. Second operand 3 states and 1771 transitions. [2023-08-30 11:00:41,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 80 transitions, 451 flow [2023-08-30 11:00:41,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 80 transitions, 450 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:00:41,006 INFO L231 Difference]: Finished difference. Result has 74 places, 80 transitions, 292 flow [2023-08-30 11:00:41,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1375, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=292, PETRI_PLACES=74, PETRI_TRANSITIONS=80} [2023-08-30 11:00:41,007 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -8 predicate places. [2023-08-30 11:00:41,007 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 80 transitions, 292 flow [2023-08-30 11:00:41,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 571.3333333333334) internal successors, (1714), 3 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:41,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:00:41,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 11:00:41,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 11:00:41,008 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-08-30 11:00:41,009 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:00:41,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1974230638, now seen corresponding path program 1 times [2023-08-30 11:00:41,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:00:41,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338236570] [2023-08-30 11:00:41,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:00:41,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:00:41,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:00:41,051 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 11:00:41,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:00:41,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338236570] [2023-08-30 11:00:41,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338236570] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:00:41,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:00:41,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:00:41,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398742692] [2023-08-30 11:00:41,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:00:41,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:00:41,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:00:41,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:00:41,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:00:41,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 569 out of 1375 [2023-08-30 11:00:41,083 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 80 transitions, 292 flow. Second operand has 3 states, 3 states have (on average 570.6666666666666) internal successors, (1712), 3 states have internal predecessors, (1712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:41,083 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:00:41,083 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 569 of 1375 [2023-08-30 11:00:41,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:00:47,419 INFO L130 PetriNetUnfolder]: 43066/61754 cut-off events. [2023-08-30 11:00:47,419 INFO L131 PetriNetUnfolder]: For 489/489 co-relation queries the response was YES. [2023-08-30 11:00:47,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126123 conditions, 61754 events. 43066/61754 cut-off events. For 489/489 co-relation queries the response was YES. Maximal size of possible extension queue 2201. Compared 412742 event pairs, 38250 based on Foata normal form. 0/33392 useless extension candidates. Maximal degree in co-relation 126114. Up to 30910 conditions per place. [2023-08-30 11:00:47,717 INFO L137 encePairwiseOnDemand]: 1363/1375 looper letters, 118 selfloop transitions, 6 changer transitions 0/124 dead transitions. [2023-08-30 11:00:47,717 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 124 transitions, 634 flow [2023-08-30 11:00:47,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:00:47,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:00:47,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1817 transitions. [2023-08-30 11:00:47,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4404848484848485 [2023-08-30 11:00:47,722 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1817 transitions. [2023-08-30 11:00:47,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1817 transitions. [2023-08-30 11:00:47,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:00:47,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1817 transitions. [2023-08-30 11:00:47,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 605.6666666666666) internal successors, (1817), 3 states have internal predecessors, (1817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:47,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:47,733 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:47,733 INFO L175 Difference]: Start difference. First operand has 74 places, 80 transitions, 292 flow. Second operand 3 states and 1817 transitions. [2023-08-30 11:00:47,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 124 transitions, 634 flow [2023-08-30 11:00:47,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 124 transitions, 633 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:00:47,736 INFO L231 Difference]: Finished difference. Result has 77 places, 85 transitions, 347 flow [2023-08-30 11:00:47,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1375, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=347, PETRI_PLACES=77, PETRI_TRANSITIONS=85} [2023-08-30 11:00:47,736 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -5 predicate places. [2023-08-30 11:00:47,736 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 85 transitions, 347 flow [2023-08-30 11:00:47,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 570.6666666666666) internal successors, (1712), 3 states have internal predecessors, (1712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:47,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:00:47,737 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 11:00:47,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 11:00:47,737 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-08-30 11:00:47,737 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:00:47,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1071601384, now seen corresponding path program 1 times [2023-08-30 11:00:47,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:00:47,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067269229] [2023-08-30 11:00:47,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:00:47,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:00:47,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:00:47,798 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:00:47,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:00:47,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067269229] [2023-08-30 11:00:47,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067269229] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:00:47,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405899253] [2023-08-30 11:00:47,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:00:47,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:00:47,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:00:47,801 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 11:00:47,830 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 11:00:47,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:00:47,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 11:00:47,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:00:47,944 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:00:47,944 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:00:47,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405899253] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:00:47,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:00:47,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-30 11:00:47,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073980838] [2023-08-30 11:00:47,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:00:47,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:00:47,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:00:47,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:00:47,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 11:00:47,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 566 out of 1375 [2023-08-30 11:00:47,986 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 85 transitions, 347 flow. Second operand has 3 states, 3 states have (on average 568.0) internal successors, (1704), 3 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:47,987 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:00:47,987 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 566 of 1375 [2023-08-30 11:00:47,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:00:54,952 INFO L130 PetriNetUnfolder]: 43065/61753 cut-off events. [2023-08-30 11:00:54,952 INFO L131 PetriNetUnfolder]: For 494/494 co-relation queries the response was YES. [2023-08-30 11:00:55,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126236 conditions, 61753 events. 43065/61753 cut-off events. For 494/494 co-relation queries the response was YES. Maximal size of possible extension queue 2201. Compared 412740 event pairs, 38250 based on Foata normal form. 1/33422 useless extension candidates. Maximal degree in co-relation 126226. Up to 61753 conditions per place. [2023-08-30 11:00:55,263 INFO L137 encePairwiseOnDemand]: 1372/1375 looper letters, 82 selfloop transitions, 2 changer transitions 0/84 dead transitions. [2023-08-30 11:00:55,263 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 84 transitions, 511 flow [2023-08-30 11:00:55,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:00:55,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:00:55,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1760 transitions. [2023-08-30 11:00:55,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4266666666666667 [2023-08-30 11:00:55,267 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1760 transitions. [2023-08-30 11:00:55,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1760 transitions. [2023-08-30 11:00:55,268 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:00:55,268 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1760 transitions. [2023-08-30 11:00:55,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 586.6666666666666) internal successors, (1760), 3 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:55,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:55,275 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:55,275 INFO L175 Difference]: Start difference. First operand has 77 places, 85 transitions, 347 flow. Second operand 3 states and 1760 transitions. [2023-08-30 11:00:55,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 84 transitions, 511 flow [2023-08-30 11:00:55,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 84 transitions, 499 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:00:55,278 INFO L231 Difference]: Finished difference. Result has 77 places, 84 transitions, 335 flow [2023-08-30 11:00:55,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1375, PETRI_DIFFERENCE_MINUEND_FLOW=331, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=335, PETRI_PLACES=77, PETRI_TRANSITIONS=84} [2023-08-30 11:00:55,278 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -5 predicate places. [2023-08-30 11:00:55,279 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 84 transitions, 335 flow [2023-08-30 11:00:55,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 568.0) internal successors, (1704), 3 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:55,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:00:55,279 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 11:00:55,288 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 11:00:55,484 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,SelfDestructingSolverStorable11 [2023-08-30 11:00:55,484 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-08-30 11:00:55,485 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:00:55,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1144777850, now seen corresponding path program 2 times [2023-08-30 11:00:55,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:00:55,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465513707] [2023-08-30 11:00:55,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:00:55,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:00:55,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:00:55,565 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:00:55,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:00:55,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465513707] [2023-08-30 11:00:55,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465513707] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:00:55,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570720452] [2023-08-30 11:00:55,566 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 11:00:55,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:00:55,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:00:55,567 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 11:00:55,570 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 11:00:55,685 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 11:00:55,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 11:00:55,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 11:00:55,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:00:55,708 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 11:00:55,708 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:00:55,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570720452] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:00:55,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:00:55,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 11:00:55,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554832968] [2023-08-30 11:00:55,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:00:55,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:00:55,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:00:55,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:00:55,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 11:00:55,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 572 out of 1375 [2023-08-30 11:00:55,741 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 84 transitions, 335 flow. Second operand has 3 states, 3 states have (on average 573.0) internal successors, (1719), 3 states have internal predecessors, (1719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:00:55,742 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:00:55,742 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 572 of 1375 [2023-08-30 11:00:55,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:01:02,711 INFO L130 PetriNetUnfolder]: 43065/61750 cut-off events. [2023-08-30 11:01:02,711 INFO L131 PetriNetUnfolder]: For 489/489 co-relation queries the response was YES. [2023-08-30 11:01:02,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126190 conditions, 61750 events. 43065/61750 cut-off events. For 489/489 co-relation queries the response was YES. Maximal size of possible extension queue 2201. Compared 412746 event pairs, 38250 based on Foata normal form. 3/33401 useless extension candidates. Maximal degree in co-relation 126180. Up to 61750 conditions per place. [2023-08-30 11:01:03,061 INFO L137 encePairwiseOnDemand]: 1371/1375 looper letters, 80 selfloop transitions, 1 changer transitions 0/81 dead transitions. [2023-08-30 11:01:03,061 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 81 transitions, 467 flow [2023-08-30 11:01:03,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:01:03,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:01:03,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1776 transitions. [2023-08-30 11:01:03,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43054545454545456 [2023-08-30 11:01:03,065 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1776 transitions. [2023-08-30 11:01:03,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1776 transitions. [2023-08-30 11:01:03,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:01:03,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1776 transitions. [2023-08-30 11:01:03,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 592.0) internal successors, (1776), 3 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:01:03,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:01:03,073 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:01:03,073 INFO L175 Difference]: Start difference. First operand has 77 places, 84 transitions, 335 flow. Second operand 3 states and 1776 transitions. [2023-08-30 11:01:03,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 81 transitions, 467 flow [2023-08-30 11:01:03,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 81 transitions, 421 flow, removed 4 selfloop flow, removed 5 redundant places. [2023-08-30 11:01:03,076 INFO L231 Difference]: Finished difference. Result has 71 places, 81 transitions, 261 flow [2023-08-30 11:01:03,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1375, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=261, PETRI_PLACES=71, PETRI_TRANSITIONS=81} [2023-08-30 11:01:03,076 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -11 predicate places. [2023-08-30 11:01:03,076 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 81 transitions, 261 flow [2023-08-30 11:01:03,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 573.0) internal successors, (1719), 3 states have internal predecessors, (1719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:01:03,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:01:03,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:01:03,085 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 11:01:03,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:01:03,282 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-08-30 11:01:03,283 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:01:03,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1055193015, now seen corresponding path program 1 times [2023-08-30 11:01:03,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:01:03,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049823504] [2023-08-30 11:01:03,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:01:03,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:01:03,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:01:03,352 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:01:03,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:01:03,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049823504] [2023-08-30 11:01:03,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049823504] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:01:03,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934409949] [2023-08-30 11:01:03,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:01:03,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:01:03,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:01:03,354 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 11:01:03,357 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 11:01:03,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:01:03,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 11:01:03,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:01:03,500 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 11:01:03,500 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:01:03,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934409949] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:01:03,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:01:03,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 6 [2023-08-30 11:01:03,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930079572] [2023-08-30 11:01:03,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:01:03,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:01:03,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:01:03,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:01:03,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 11:01:03,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 560 out of 1375 [2023-08-30 11:01:03,613 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 81 transitions, 261 flow. Second operand has 4 states, 4 states have (on average 561.75) internal successors, (2247), 4 states have internal predecessors, (2247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:01:03,613 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:01:03,613 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 560 of 1375 [2023-08-30 11:01:03,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:01:09,983 INFO L130 PetriNetUnfolder]: 43064/61749 cut-off events. [2023-08-30 11:01:09,983 INFO L131 PetriNetUnfolder]: For 480/480 co-relation queries the response was YES. [2023-08-30 11:01:10,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126161 conditions, 61749 events. 43064/61749 cut-off events. For 480/480 co-relation queries the response was YES. Maximal size of possible extension queue 2201. Compared 412772 event pairs, 38250 based on Foata normal form. 0/33391 useless extension candidates. Maximal degree in co-relation 126155. Up to 61744 conditions per place. [2023-08-30 11:01:10,487 INFO L137 encePairwiseOnDemand]: 1370/1375 looper letters, 73 selfloop transitions, 7 changer transitions 0/80 dead transitions. [2023-08-30 11:01:10,487 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 80 transitions, 417 flow [2023-08-30 11:01:10,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 11:01:10,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 11:01:10,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2300 transitions. [2023-08-30 11:01:10,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41818181818181815 [2023-08-30 11:01:10,491 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2300 transitions. [2023-08-30 11:01:10,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2300 transitions. [2023-08-30 11:01:10,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:01:10,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2300 transitions. [2023-08-30 11:01:10,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 575.0) internal successors, (2300), 4 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:01:10,500 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1375.0) internal successors, (6875), 5 states have internal predecessors, (6875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:01:10,501 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1375.0) internal successors, (6875), 5 states have internal predecessors, (6875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:01:10,501 INFO L175 Difference]: Start difference. First operand has 71 places, 81 transitions, 261 flow. Second operand 4 states and 2300 transitions. [2023-08-30 11:01:10,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 80 transitions, 417 flow [2023-08-30 11:01:10,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 80 transitions, 416 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:01:10,503 INFO L231 Difference]: Finished difference. Result has 73 places, 80 transitions, 270 flow [2023-08-30 11:01:10,503 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1375, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=270, PETRI_PLACES=73, PETRI_TRANSITIONS=80} [2023-08-30 11:01:10,504 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -9 predicate places. [2023-08-30 11:01:10,504 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 80 transitions, 270 flow [2023-08-30 11:01:10,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 561.75) internal successors, (2247), 4 states have internal predecessors, (2247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:01:10,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:01:10,505 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:01:10,515 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 11:01:10,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:01:10,715 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-08-30 11:01:10,716 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:01:10,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1536929800, now seen corresponding path program 1 times [2023-08-30 11:01:10,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:01:10,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148429507] [2023-08-30 11:01:10,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:01:10,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:01:10,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:01:10,802 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 11:01:10,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:01:10,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148429507] [2023-08-30 11:01:10,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148429507] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:01:10,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118852142] [2023-08-30 11:01:10,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:01:10,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:01:10,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:01:10,804 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 11:01:10,807 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 11:01:10,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:01:10,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 11:01:10,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:01:10,972 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 11:01:10,972 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:01:10,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118852142] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:01:10,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:01:10,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 6 [2023-08-30 11:01:10,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090869272] [2023-08-30 11:01:10,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:01:10,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:01:10,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:01:10,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:01:10,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 11:01:11,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 560 out of 1375 [2023-08-30 11:01:11,075 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 80 transitions, 270 flow. Second operand has 4 states, 4 states have (on average 562.0) internal successors, (2248), 4 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:01:11,075 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:01:11,075 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 560 of 1375 [2023-08-30 11:01:11,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:01:16,336 INFO L130 PetriNetUnfolder]: 34453/49404 cut-off events. [2023-08-30 11:01:16,337 INFO L131 PetriNetUnfolder]: For 384/384 co-relation queries the response was YES. [2023-08-30 11:01:16,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100953 conditions, 49404 events. 34453/49404 cut-off events. For 384/384 co-relation queries the response was YES. Maximal size of possible extension queue 1786. Compared 322680 event pairs, 30600 based on Foata normal form. 1/26721 useless extension candidates. Maximal degree in co-relation 100947. Up to 49399 conditions per place. [2023-08-30 11:01:16,548 INFO L137 encePairwiseOnDemand]: 1370/1375 looper letters, 73 selfloop transitions, 7 changer transitions 0/80 dead transitions. [2023-08-30 11:01:16,548 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 80 transitions, 430 flow [2023-08-30 11:01:16,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 11:01:16,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 11:01:16,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2300 transitions. [2023-08-30 11:01:16,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41818181818181815 [2023-08-30 11:01:16,552 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2300 transitions. [2023-08-30 11:01:16,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2300 transitions. [2023-08-30 11:01:16,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:01:16,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2300 transitions. [2023-08-30 11:01:16,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 575.0) internal successors, (2300), 4 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:01:16,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1375.0) internal successors, (6875), 5 states have internal predecessors, (6875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:01:16,558 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1375.0) internal successors, (6875), 5 states have internal predecessors, (6875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:01:16,558 INFO L175 Difference]: Start difference. First operand has 73 places, 80 transitions, 270 flow. Second operand 4 states and 2300 transitions. [2023-08-30 11:01:16,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 80 transitions, 430 flow [2023-08-30 11:01:16,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 80 transitions, 429 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:01:16,560 INFO L231 Difference]: Finished difference. Result has 76 places, 80 transitions, 292 flow [2023-08-30 11:01:16,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1375, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=292, PETRI_PLACES=76, PETRI_TRANSITIONS=80} [2023-08-30 11:01:16,561 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -6 predicate places. [2023-08-30 11:01:16,561 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 80 transitions, 292 flow [2023-08-30 11:01:16,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 562.0) internal successors, (2248), 4 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:01:16,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:01:16,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:01:16,568 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 11:01:16,767 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,SelfDestructingSolverStorable14 [2023-08-30 11:01:16,768 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-08-30 11:01:16,768 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:01:16,768 INFO L85 PathProgramCache]: Analyzing trace with hash 396618935, now seen corresponding path program 1 times [2023-08-30 11:01:16,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:01:16,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011143857] [2023-08-30 11:01:16,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:01:16,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:01:16,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:01:16,833 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 11:01:16,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:01:16,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011143857] [2023-08-30 11:01:16,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011143857] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:01:16,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715282985] [2023-08-30 11:01:16,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:01:16,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:01:16,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:01:16,835 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 11:01:16,861 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 11:01:16,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:01:16,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:01:16,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:01:16,984 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 11:01:16,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:01:16,996 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 11:01:16,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715282985] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:01:16,997 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:01:16,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 11:01:16,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314600851] [2023-08-30 11:01:16,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:01:16,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 11:01:16,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:01:16,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 11:01:17,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 11:01:17,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 569 out of 1375 [2023-08-30 11:01:17,069 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 80 transitions, 292 flow. Second operand has 7 states, 7 states have (on average 571.0) internal successors, (3997), 7 states have internal predecessors, (3997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:01:17,069 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:01:17,069 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 569 of 1375 [2023-08-30 11:01:17,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:01:30,427 INFO L130 PetriNetUnfolder]: 86149/123468 cut-off events. [2023-08-30 11:01:30,428 INFO L131 PetriNetUnfolder]: For 967/967 co-relation queries the response was YES. [2023-08-30 11:01:30,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252239 conditions, 123468 events. 86149/123468 cut-off events. For 967/967 co-relation queries the response was YES. Maximal size of possible extension queue 4209. Compared 892226 event pairs, 76500 based on Foata normal form. 0/66768 useless extension candidates. Maximal degree in co-relation 252232. Up to 24717 conditions per place. [2023-08-30 11:01:31,139 INFO L137 encePairwiseOnDemand]: 1363/1375 looper letters, 227 selfloop transitions, 33 changer transitions 0/260 dead transitions. [2023-08-30 11:01:31,139 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 260 transitions, 1244 flow [2023-08-30 11:01:31,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 11:01:31,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 11:01:31,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4234 transitions. [2023-08-30 11:01:31,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398961038961039 [2023-08-30 11:01:31,144 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4234 transitions. [2023-08-30 11:01:31,144 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4234 transitions. [2023-08-30 11:01:31,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:01:31,146 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4234 transitions. [2023-08-30 11:01:31,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 604.8571428571429) internal successors, (4234), 7 states have internal predecessors, (4234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:01:31,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1375.0) internal successors, (11000), 8 states have internal predecessors, (11000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:01:31,156 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1375.0) internal successors, (11000), 8 states have internal predecessors, (11000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:01:31,157 INFO L175 Difference]: Start difference. First operand has 76 places, 80 transitions, 292 flow. Second operand 7 states and 4234 transitions. [2023-08-30 11:01:31,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 260 transitions, 1244 flow [2023-08-30 11:01:31,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 260 transitions, 1225 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 11:01:31,160 INFO L231 Difference]: Finished difference. Result has 82 places, 104 transitions, 492 flow [2023-08-30 11:01:31,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1375, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=492, PETRI_PLACES=82, PETRI_TRANSITIONS=104} [2023-08-30 11:01:31,161 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, 0 predicate places. [2023-08-30 11:01:31,161 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 104 transitions, 492 flow [2023-08-30 11:01:31,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 571.0) internal successors, (3997), 7 states have internal predecessors, (3997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:01:31,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:01:31,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:01:31,173 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 11:01:31,372 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,SelfDestructingSolverStorable15 [2023-08-30 11:01:31,373 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-08-30 11:01:31,373 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:01:31,373 INFO L85 PathProgramCache]: Analyzing trace with hash 396618880, now seen corresponding path program 1 times [2023-08-30 11:01:31,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:01:31,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659687790] [2023-08-30 11:01:31,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:01:31,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:01:31,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:01:31,447 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 11:01:31,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:01:31,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659687790] [2023-08-30 11:01:31,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659687790] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:01:31,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903103534] [2023-08-30 11:01:31,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:01:31,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:01:31,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:01:31,450 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 11:01:31,454 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 11:01:31,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:01:31,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:01:31,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:01:31,607 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 11:01:31,607 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:01:31,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903103534] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:01:31,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:01:31,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-30 11:01:31,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228636655] [2023-08-30 11:01:31,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:01:31,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:01:31,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:01:31,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:01:31,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 11:01:31,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 569 out of 1375 [2023-08-30 11:01:31,644 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 104 transitions, 492 flow. Second operand has 4 states, 4 states have (on average 571.25) internal successors, (2285), 4 states have internal predecessors, (2285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:01:31,644 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:01:31,644 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 569 of 1375 [2023-08-30 11:01:31,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:01:45,116 INFO L130 PetriNetUnfolder]: 86113/123420 cut-off events. [2023-08-30 11:01:45,116 INFO L131 PetriNetUnfolder]: For 990/990 co-relation queries the response was YES. [2023-08-30 11:01:45,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252279 conditions, 123420 events. 86113/123420 cut-off events. For 990/990 co-relation queries the response was YES. Maximal size of possible extension queue 4234. Compared 894158 event pairs, 76500 based on Foata normal form. 8/66812 useless extension candidates. Maximal degree in co-relation 252269. Up to 98696 conditions per place. [2023-08-30 11:01:45,850 INFO L137 encePairwiseOnDemand]: 1366/1375 looper letters, 119 selfloop transitions, 12 changer transitions 0/131 dead transitions. [2023-08-30 11:01:45,850 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 131 transitions, 757 flow [2023-08-30 11:01:45,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 11:01:45,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 11:01:45,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2377 transitions. [2023-08-30 11:01:45,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43218181818181817 [2023-08-30 11:01:45,853 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2377 transitions. [2023-08-30 11:01:45,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2377 transitions. [2023-08-30 11:01:45,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:01:45,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2377 transitions. [2023-08-30 11:01:45,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 594.25) internal successors, (2377), 4 states have internal predecessors, (2377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:01:45,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1375.0) internal successors, (6875), 5 states have internal predecessors, (6875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:01:45,859 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1375.0) internal successors, (6875), 5 states have internal predecessors, (6875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:01:45,860 INFO L175 Difference]: Start difference. First operand has 82 places, 104 transitions, 492 flow. Second operand 4 states and 2377 transitions. [2023-08-30 11:01:45,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 131 transitions, 757 flow [2023-08-30 11:01:45,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 131 transitions, 727 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-08-30 11:01:45,863 INFO L231 Difference]: Finished difference. Result has 80 places, 92 transitions, 405 flow [2023-08-30 11:01:45,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1375, PETRI_DIFFERENCE_MINUEND_FLOW=381, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=405, PETRI_PLACES=80, PETRI_TRANSITIONS=92} [2023-08-30 11:01:45,864 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -2 predicate places. [2023-08-30 11:01:45,864 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 92 transitions, 405 flow [2023-08-30 11:01:45,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 571.25) internal successors, (2285), 4 states have internal predecessors, (2285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:01:45,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:01:45,865 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:01:45,874 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 11:01:46,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:01:46,074 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-08-30 11:01:46,075 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:01:46,075 INFO L85 PathProgramCache]: Analyzing trace with hash 224174474, now seen corresponding path program 2 times [2023-08-30 11:01:46,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:01:46,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387797784] [2023-08-30 11:01:46,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:01:46,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:01:46,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:01:46,227 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 11:01:46,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:01:46,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387797784] [2023-08-30 11:01:46,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387797784] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:01:46,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198140189] [2023-08-30 11:01:46,228 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 11:01:46,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:01:46,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:01:46,233 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:01:46,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 11:01:46,371 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 11:01:46,371 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 11:01:46,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 11:01:46,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:01:46,386 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-30 11:01:46,386 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:01:46,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198140189] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:01:46,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:01:46,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2023-08-30 11:01:46,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829318192] [2023-08-30 11:01:46,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:01:46,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:01:46,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:01:46,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:01:46,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-30 11:01:46,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 572 out of 1375 [2023-08-30 11:01:46,413 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 92 transitions, 405 flow. Second operand has 3 states, 3 states have (on average 575.0) internal successors, (1725), 3 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:01:46,413 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:01:46,414 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 572 of 1375 [2023-08-30 11:01:46,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:01:59,644 INFO L130 PetriNetUnfolder]: 86113/123408 cut-off events. [2023-08-30 11:01:59,644 INFO L131 PetriNetUnfolder]: For 1049/1049 co-relation queries the response was YES. [2023-08-30 11:02:00,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252184 conditions, 123408 events. 86113/123408 cut-off events. For 1049/1049 co-relation queries the response was YES. Maximal size of possible extension queue 4255. Compared 894119 event pairs, 76500 based on Foata normal form. 12/66820 useless extension candidates. Maximal degree in co-relation 252173. Up to 123384 conditions per place. [2023-08-30 11:02:00,423 INFO L137 encePairwiseOnDemand]: 1371/1375 looper letters, 88 selfloop transitions, 1 changer transitions 0/89 dead transitions. [2023-08-30 11:02:00,423 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 89 transitions, 553 flow [2023-08-30 11:02:00,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:02:00,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:02:00,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1770 transitions. [2023-08-30 11:02:00,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4290909090909091 [2023-08-30 11:02:00,426 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1770 transitions. [2023-08-30 11:02:00,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1770 transitions. [2023-08-30 11:02:00,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:02:00,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1770 transitions. [2023-08-30 11:02:00,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 590.0) internal successors, (1770), 3 states have internal predecessors, (1770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:02:00,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:02:00,430 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1375.0) internal successors, (5500), 4 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:02:00,431 INFO L175 Difference]: Start difference. First operand has 80 places, 92 transitions, 405 flow. Second operand 3 states and 1770 transitions. [2023-08-30 11:02:00,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 89 transitions, 553 flow [2023-08-30 11:02:00,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 89 transitions, 498 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-08-30 11:02:00,434 INFO L231 Difference]: Finished difference. Result has 73 places, 89 transitions, 322 flow [2023-08-30 11:02:00,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1375, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=322, PETRI_PLACES=73, PETRI_TRANSITIONS=89} [2023-08-30 11:02:00,435 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -9 predicate places. [2023-08-30 11:02:00,435 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 89 transitions, 322 flow [2023-08-30 11:02:00,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 575.0) internal successors, (1725), 3 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:02:00,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:02:00,436 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:02:00,447 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-30 11:02:00,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-30 11:02:00,641 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-08-30 11:02:00,641 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:02:00,641 INFO L85 PathProgramCache]: Analyzing trace with hash 719084549, now seen corresponding path program 1 times [2023-08-30 11:02:00,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:02:00,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773949400] [2023-08-30 11:02:00,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:02:00,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:02:00,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:02:00,762 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 11:02:00,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:02:00,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773949400] [2023-08-30 11:02:00,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773949400] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:02:00,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:02:00,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 11:02:00,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359394970] [2023-08-30 11:02:00,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:02:00,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:02:00,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:02:00,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:02:00,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 11:02:00,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 560 out of 1375 [2023-08-30 11:02:00,857 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 89 transitions, 322 flow. Second operand has 4 states, 4 states have (on average 564.0) internal successors, (2256), 4 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:02:00,857 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:02:00,857 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 560 of 1375 [2023-08-30 11:02:00,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:02:13,726 INFO L130 PetriNetUnfolder]: 86109/123404 cut-off events. [2023-08-30 11:02:13,727 INFO L131 PetriNetUnfolder]: For 970/970 co-relation queries the response was YES. [2023-08-30 11:02:14,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252052 conditions, 123404 events. 86109/123404 cut-off events. For 970/970 co-relation queries the response was YES. Maximal size of possible extension queue 4255. Compared 894005 event pairs, 76500 based on Foata normal form. 0/66800 useless extension candidates. Maximal degree in co-relation 252045. Up to 123400 conditions per place. [2023-08-30 11:02:14,447 INFO L137 encePairwiseOnDemand]: 1371/1375 looper letters, 85 selfloop transitions, 3 changer transitions 0/88 dead transitions. [2023-08-30 11:02:14,447 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 88 transitions, 494 flow [2023-08-30 11:02:14,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 11:02:14,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 11:02:14,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2293 transitions. [2023-08-30 11:02:14,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4169090909090909 [2023-08-30 11:02:14,450 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2293 transitions. [2023-08-30 11:02:14,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2293 transitions. [2023-08-30 11:02:14,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:02:14,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2293 transitions. [2023-08-30 11:02:14,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 573.25) internal successors, (2293), 4 states have internal predecessors, (2293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:02:14,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1375.0) internal successors, (6875), 5 states have internal predecessors, (6875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:02:14,456 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1375.0) internal successors, (6875), 5 states have internal predecessors, (6875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:02:14,456 INFO L175 Difference]: Start difference. First operand has 73 places, 89 transitions, 322 flow. Second operand 4 states and 2293 transitions. [2023-08-30 11:02:14,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 88 transitions, 494 flow [2023-08-30 11:02:14,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 88 transitions, 493 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:02:14,457 INFO L231 Difference]: Finished difference. Result has 75 places, 88 transitions, 323 flow [2023-08-30 11:02:14,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1375, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=323, PETRI_PLACES=75, PETRI_TRANSITIONS=88} [2023-08-30 11:02:14,458 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -7 predicate places. [2023-08-30 11:02:14,458 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 88 transitions, 323 flow [2023-08-30 11:02:14,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 564.0) internal successors, (2256), 4 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:02:14,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:02:14,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:02:14,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-30 11:02:14,459 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2023-08-30 11:02:14,459 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:02:14,459 INFO L85 PathProgramCache]: Analyzing trace with hash -718561934, now seen corresponding path program 1 times [2023-08-30 11:02:14,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:02:14,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232478505] [2023-08-30 11:02:14,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:02:14,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:02:14,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:02:14,568 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 11:02:14,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:02:14,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232478505] [2023-08-30 11:02:14,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232478505] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:02:14,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:02:14,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 11:02:14,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810363281] [2023-08-30 11:02:14,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:02:14,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:02:14,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:02:14,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:02:14,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 11:02:14,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 560 out of 1375 [2023-08-30 11:02:14,656 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 88 transitions, 323 flow. Second operand has 4 states, 4 states have (on average 564.25) internal successors, (2257), 4 states have internal predecessors, (2257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:02:14,656 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:02:14,656 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 560 of 1375 [2023-08-30 11:02:14,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand