./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_41-trylock_racefree.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_41-trylock_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash af00d5f4cc6a18cb9fd8a5151467217fe3ddb5ee0fa30b2cfbd9dd374105ee15 --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 10:09:07,143 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 10:09:07,146 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 10:09:07,186 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 10:09:07,187 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 10:09:07,190 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 10:09:07,193 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 10:09:07,195 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 10:09:07,200 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 10:09:07,205 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 10:09:07,206 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 10:09:07,207 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 10:09:07,208 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 10:09:07,209 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 10:09:07,210 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 10:09:07,212 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 10:09:07,213 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 10:09:07,214 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 10:09:07,216 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 10:09:07,219 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 10:09:07,221 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 10:09:07,226 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 10:09:07,227 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 10:09:07,227 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 10:09:07,230 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 10:09:07,232 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 10:09:07,232 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 10:09:07,233 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 10:09:07,234 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 10:09:07,235 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 10:09:07,235 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 10:09:07,236 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 10:09:07,237 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 10:09:07,238 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 10:09:07,240 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 10:09:07,240 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 10:09:07,240 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 10:09:07,240 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 10:09:07,241 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 10:09:07,241 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 10:09:07,242 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 10:09:07,243 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 10:09:07,287 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 10:09:07,288 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 10:09:07,289 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 10:09:07,289 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 10:09:07,290 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 10:09:07,290 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 10:09:07,291 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 10:09:07,291 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 10:09:07,291 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 10:09:07,291 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 10:09:07,292 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 10:09:07,293 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 10:09:07,293 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 10:09:07,293 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 10:09:07,293 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 10:09:07,293 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 10:09:07,294 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 10:09:07,294 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 10:09:07,294 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 10:09:07,294 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 10:09:07,294 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 10:09:07,295 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 10:09:07,295 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 10:09:07,295 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 10:09:07,296 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 10:09:07,296 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 10:09:07,296 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 10:09:07,296 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 10:09:07,297 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 10:09:07,297 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 10:09:07,297 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 10:09:07,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 10:09:07,297 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 10:09:07,298 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 10:09:07,298 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 10:09:07,298 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 10:09:07,298 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 10:09:07,298 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> af00d5f4cc6a18cb9fd8a5151467217fe3ddb5ee0fa30b2cfbd9dd374105ee15 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 10:09:07,585 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 10:09:07,601 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 10:09:07,604 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 10:09:07,605 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 10:09:07,605 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 10:09:07,606 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_41-trylock_racefree.i [2023-08-30 10:09:08,831 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 10:09:09,096 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 10:09:09,097 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_41-trylock_racefree.i [2023-08-30 10:09:09,110 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c530e846/491e78b133a2480f86d652b19a6709b6/FLAG581e21411 [2023-08-30 10:09:09,123 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c530e846/491e78b133a2480f86d652b19a6709b6 [2023-08-30 10:09:09,126 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 10:09:09,127 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 10:09:09,128 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 10:09:09,128 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 10:09:09,131 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 10:09:09,132 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:09:09" (1/1) ... [2023-08-30 10:09:09,133 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fe24438 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:09:09, skipping insertion in model container [2023-08-30 10:09:09,133 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:09:09" (1/1) ... [2023-08-30 10:09:09,139 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 10:09:09,174 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 10:09:09,473 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_41-trylock_racefree.i[30176,30189] [2023-08-30 10:09:09,498 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 10:09:09,510 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 10:09:09,544 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_41-trylock_racefree.i[30176,30189] [2023-08-30 10:09:09,563 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 10:09:09,611 INFO L208 MainTranslator]: Completed translation [2023-08-30 10:09:09,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:09:09 WrapperNode [2023-08-30 10:09:09,612 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 10:09:09,613 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 10:09:09,613 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 10:09:09,613 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 10:09:09,620 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:09:09" (1/1) ... [2023-08-30 10:09:09,645 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:09:09" (1/1) ... [2023-08-30 10:09:09,672 INFO L138 Inliner]: procedures = 171, calls = 30, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 81 [2023-08-30 10:09:09,672 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 10:09:09,673 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 10:09:09,673 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 10:09:09,674 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 10:09:09,681 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:09:09" (1/1) ... [2023-08-30 10:09:09,682 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:09:09" (1/1) ... [2023-08-30 10:09:09,696 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:09:09" (1/1) ... [2023-08-30 10:09:09,696 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:09:09" (1/1) ... [2023-08-30 10:09:09,708 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:09:09" (1/1) ... [2023-08-30 10:09:09,716 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:09:09" (1/1) ... [2023-08-30 10:09:09,718 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:09:09" (1/1) ... [2023-08-30 10:09:09,723 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:09:09" (1/1) ... [2023-08-30 10:09:09,725 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 10:09:09,726 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 10:09:09,726 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 10:09:09,727 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 10:09:09,731 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:09:09" (1/1) ... [2023-08-30 10:09:09,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 10:09:09,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:09:09,761 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 10:09:09,768 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 10:09:09,797 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 10:09:09,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 10:09:09,797 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 10:09:09,798 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 10:09:09,798 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 10:09:09,798 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-30 10:09:09,798 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-30 10:09:09,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 10:09:09,798 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexTryLock [2023-08-30 10:09:09,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 10:09:09,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 10:09:09,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 10:09:09,800 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 10:09:09,986 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 10:09:09,988 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 10:09:10,209 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 10:09:10,216 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 10:09:10,216 INFO L302 CfgBuilder]: Removed 11 assume(true) statements. [2023-08-30 10:09:10,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:09:10 BoogieIcfgContainer [2023-08-30 10:09:10,218 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 10:09:10,220 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 10:09:10,220 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 10:09:10,223 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 10:09:10,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 10:09:09" (1/3) ... [2023-08-30 10:09:10,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d12703c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:09:10, skipping insertion in model container [2023-08-30 10:09:10,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:09:09" (2/3) ... [2023-08-30 10:09:10,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d12703c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:09:10, skipping insertion in model container [2023-08-30 10:09:10,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:09:10" (3/3) ... [2023-08-30 10:09:10,230 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_41-trylock_racefree.i [2023-08-30 10:09:10,237 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 10:09:10,245 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 10:09:10,245 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-30 10:09:10,245 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 10:09:10,293 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-30 10:09:10,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 118 transitions, 244 flow [2023-08-30 10:09:10,374 INFO L130 PetriNetUnfolder]: 21/154 cut-off events. [2023-08-30 10:09:10,374 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 10:09:10,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 154 events. 21/154 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 374 event pairs, 0 based on Foata normal form. 0/122 useless extension candidates. Maximal degree in co-relation 81. Up to 6 conditions per place. [2023-08-30 10:09:10,381 INFO L82 GeneralOperation]: Start removeDead. Operand has 107 places, 118 transitions, 244 flow [2023-08-30 10:09:10,385 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 105 places, 115 transitions, 238 flow [2023-08-30 10:09:10,388 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:09:10,396 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 105 places, 115 transitions, 238 flow [2023-08-30 10:09:10,398 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 105 places, 115 transitions, 238 flow [2023-08-30 10:09:10,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 105 places, 115 transitions, 238 flow [2023-08-30 10:09:10,442 INFO L130 PetriNetUnfolder]: 20/151 cut-off events. [2023-08-30 10:09:10,442 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 10:09:10,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 151 events. 20/151 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 370 event pairs, 0 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 81. Up to 6 conditions per place. [2023-08-30 10:09:10,445 INFO L119 LiptonReduction]: Number of co-enabled transitions 3312 [2023-08-30 10:09:12,841 INFO L134 LiptonReduction]: Checked pairs total: 5016 [2023-08-30 10:09:12,841 INFO L136 LiptonReduction]: Total number of compositions: 97 [2023-08-30 10:09:12,853 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 10:09:12,858 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;@29153312, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:09:12,858 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-08-30 10:09:12,861 INFO L130 PetriNetUnfolder]: 1/9 cut-off events. [2023-08-30 10:09:12,861 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:09:12,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:09:12,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 10:09:12,863 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-08-30 10:09:12,866 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:09:12,867 INFO L85 PathProgramCache]: Analyzing trace with hash 14147023, now seen corresponding path program 1 times [2023-08-30 10:09:12,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:09:12,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271964999] [2023-08-30 10:09:12,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:09:12,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:09:12,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:09:13,078 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 10:09:13,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:09:13,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271964999] [2023-08-30 10:09:13,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271964999] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:09:13,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:09:13,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:09:13,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88482002] [2023-08-30 10:09:13,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:09:13,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:09:13,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:09:13,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:09:13,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:09:13,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 215 [2023-08-30 10:09:13,128 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 40 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:13,128 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:09:13,128 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 215 [2023-08-30 10:09:13,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:09:13,235 INFO L130 PetriNetUnfolder]: 121/270 cut-off events. [2023-08-30 10:09:13,236 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 10:09:13,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 545 conditions, 270 events. 121/270 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1172 event pairs, 0 based on Foata normal form. 10/213 useless extension candidates. Maximal degree in co-relation 501. Up to 242 conditions per place. [2023-08-30 10:09:13,239 INFO L137 encePairwiseOnDemand]: 201/215 looper letters, 38 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2023-08-30 10:09:13,239 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 42 transitions, 172 flow [2023-08-30 10:09:13,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:09:13,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:09:13,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 355 transitions. [2023-08-30 10:09:13,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5503875968992248 [2023-08-30 10:09:13,252 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 355 transitions. [2023-08-30 10:09:13,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 355 transitions. [2023-08-30 10:09:13,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:09:13,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 355 transitions. [2023-08-30 10:09:13,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:13,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 215.0) internal successors, (860), 4 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:13,264 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 215.0) internal successors, (860), 4 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:13,289 INFO L175 Difference]: Start difference. First operand has 34 places, 40 transitions, 88 flow. Second operand 3 states and 355 transitions. [2023-08-30 10:09:13,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 42 transitions, 172 flow [2023-08-30 10:09:13,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 42 transitions, 172 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 10:09:13,306 INFO L231 Difference]: Finished difference. Result has 34 places, 29 transitions, 74 flow [2023-08-30 10:09:13,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=215, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=34, PETRI_TRANSITIONS=29} [2023-08-30 10:09:13,311 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 0 predicate places. [2023-08-30 10:09:13,311 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 29 transitions, 74 flow [2023-08-30 10:09:13,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:13,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:09:13,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 10:09:13,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 10:09:13,312 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-08-30 10:09:13,313 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:09:13,313 INFO L85 PathProgramCache]: Analyzing trace with hash 710381505, now seen corresponding path program 1 times [2023-08-30 10:09:13,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:09:13,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200873831] [2023-08-30 10:09:13,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:09:13,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:09:13,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:09:13,458 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 10:09:13,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:09:13,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200873831] [2023-08-30 10:09:13,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200873831] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:09:13,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:09:13,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:09:13,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210819122] [2023-08-30 10:09:13,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:09:13,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:09:13,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:09:13,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:09:13,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:09:13,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 215 [2023-08-30 10:09:13,474 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 29 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:13,474 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:09:13,474 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 215 [2023-08-30 10:09:13,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:09:13,528 INFO L130 PetriNetUnfolder]: 101/220 cut-off events. [2023-08-30 10:09:13,528 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 10:09:13,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 481 conditions, 220 events. 101/220 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 772 event pairs, 18 based on Foata normal form. 0/187 useless extension candidates. Maximal degree in co-relation 454. Up to 164 conditions per place. [2023-08-30 10:09:13,530 INFO L137 encePairwiseOnDemand]: 211/215 looper letters, 33 selfloop transitions, 2 changer transitions 0/37 dead transitions. [2023-08-30 10:09:13,530 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 37 transitions, 165 flow [2023-08-30 10:09:13,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:09:13,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:09:13,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 337 transitions. [2023-08-30 10:09:13,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5224806201550387 [2023-08-30 10:09:13,533 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 337 transitions. [2023-08-30 10:09:13,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 337 transitions. [2023-08-30 10:09:13,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:09:13,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 337 transitions. [2023-08-30 10:09:13,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:13,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 215.0) internal successors, (860), 4 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:13,537 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 215.0) internal successors, (860), 4 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:13,537 INFO L175 Difference]: Start difference. First operand has 34 places, 29 transitions, 74 flow. Second operand 3 states and 337 transitions. [2023-08-30 10:09:13,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 37 transitions, 165 flow [2023-08-30 10:09:13,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 37 transitions, 159 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:09:13,539 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 70 flow [2023-08-30 10:09:13,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=215, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=32, PETRI_TRANSITIONS=27} [2023-08-30 10:09:13,540 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -2 predicate places. [2023-08-30 10:09:13,540 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 70 flow [2023-08-30 10:09:13,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:13,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:09:13,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:09:13,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 10:09:13,542 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-08-30 10:09:13,542 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:09:13,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1672325029, now seen corresponding path program 1 times [2023-08-30 10:09:13,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:09:13,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970599877] [2023-08-30 10:09:13,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:09:13,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:09:13,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:09:13,635 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 10:09:13,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:09:13,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970599877] [2023-08-30 10:09:13,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970599877] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:09:13,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:09:13,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:09:13,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572863385] [2023-08-30 10:09:13,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:09:13,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 10:09:13,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:09:13,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 10:09:13,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:09:13,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 215 [2023-08-30 10:09:13,664 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 70 flow. Second operand has 5 states, 5 states have (on average 97.6) internal successors, (488), 5 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:13,664 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:09:13,664 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 215 [2023-08-30 10:09:13,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:09:13,775 INFO L130 PetriNetUnfolder]: 91/199 cut-off events. [2023-08-30 10:09:13,775 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2023-08-30 10:09:13,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 436 conditions, 199 events. 91/199 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 642 event pairs, 9 based on Foata normal form. 0/177 useless extension candidates. Maximal degree in co-relation 411. Up to 80 conditions per place. [2023-08-30 10:09:13,779 INFO L137 encePairwiseOnDemand]: 210/215 looper letters, 49 selfloop transitions, 4 changer transitions 1/56 dead transitions. [2023-08-30 10:09:13,779 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 56 transitions, 245 flow [2023-08-30 10:09:13,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 10:09:13,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 10:09:13,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 535 transitions. [2023-08-30 10:09:13,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49767441860465117 [2023-08-30 10:09:13,782 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 535 transitions. [2023-08-30 10:09:13,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 535 transitions. [2023-08-30 10:09:13,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:09:13,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 535 transitions. [2023-08-30 10:09:13,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 107.0) internal successors, (535), 5 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:13,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 215.0) internal successors, (1290), 6 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:13,788 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 215.0) internal successors, (1290), 6 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:13,788 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 70 flow. Second operand 5 states and 535 transitions. [2023-08-30 10:09:13,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 56 transitions, 245 flow [2023-08-30 10:09:13,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 56 transitions, 241 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:09:13,792 INFO L231 Difference]: Finished difference. Result has 33 places, 26 transitions, 72 flow [2023-08-30 10:09:13,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=215, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=72, PETRI_PLACES=33, PETRI_TRANSITIONS=26} [2023-08-30 10:09:13,793 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -1 predicate places. [2023-08-30 10:09:13,793 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 26 transitions, 72 flow [2023-08-30 10:09:13,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 97.6) internal successors, (488), 5 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:13,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:09:13,794 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:09:13,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 10:09:13,795 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-08-30 10:09:13,795 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:09:13,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1672325030, now seen corresponding path program 1 times [2023-08-30 10:09:13,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:09:13,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948947890] [2023-08-30 10:09:13,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:09:13,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:09:13,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:09:13,895 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 10:09:13,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:09:13,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948947890] [2023-08-30 10:09:13,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948947890] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:09:13,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:09:13,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:09:13,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175818661] [2023-08-30 10:09:13,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:09:13,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 10:09:13,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:09:13,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 10:09:13,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:09:13,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 215 [2023-08-30 10:09:13,926 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 72 flow. Second operand has 5 states, 5 states have (on average 97.6) internal successors, (488), 5 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:13,926 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:09:13,926 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 215 [2023-08-30 10:09:13,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:09:14,012 INFO L130 PetriNetUnfolder]: 81/179 cut-off events. [2023-08-30 10:09:14,012 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-08-30 10:09:14,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 414 conditions, 179 events. 81/179 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 546 event pairs, 9 based on Foata normal form. 0/168 useless extension candidates. Maximal degree in co-relation 389. Up to 64 conditions per place. [2023-08-30 10:09:14,014 INFO L137 encePairwiseOnDemand]: 210/215 looper letters, 46 selfloop transitions, 4 changer transitions 4/55 dead transitions. [2023-08-30 10:09:14,014 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 55 transitions, 245 flow [2023-08-30 10:09:14,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 10:09:14,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 10:09:14,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 534 transitions. [2023-08-30 10:09:14,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4967441860465116 [2023-08-30 10:09:14,016 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 534 transitions. [2023-08-30 10:09:14,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 534 transitions. [2023-08-30 10:09:14,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:09:14,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 534 transitions. [2023-08-30 10:09:14,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 106.8) internal successors, (534), 5 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:14,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 215.0) internal successors, (1290), 6 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:14,021 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 215.0) internal successors, (1290), 6 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:14,021 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 72 flow. Second operand 5 states and 534 transitions. [2023-08-30 10:09:14,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 55 transitions, 245 flow [2023-08-30 10:09:14,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 55 transitions, 237 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 10:09:14,023 INFO L231 Difference]: Finished difference. Result has 32 places, 24 transitions, 66 flow [2023-08-30 10:09:14,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=215, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=66, PETRI_PLACES=32, PETRI_TRANSITIONS=24} [2023-08-30 10:09:14,024 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -2 predicate places. [2023-08-30 10:09:14,024 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 24 transitions, 66 flow [2023-08-30 10:09:14,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 97.6) internal successors, (488), 5 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:14,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:09:14,025 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:09:14,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 10:09:14,025 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-08-30 10:09:14,026 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:09:14,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1892826004, now seen corresponding path program 1 times [2023-08-30 10:09:14,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:09:14,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115972281] [2023-08-30 10:09:14,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:09:14,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:09:14,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:09:14,077 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 10:09:14,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:09:14,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115972281] [2023-08-30 10:09:14,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115972281] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:09:14,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835157156] [2023-08-30 10:09:14,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:09:14,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:09:14,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:09:14,082 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 10:09:14,097 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 10:09:14,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:09:14,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 10:09:14,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:09:14,217 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 10:09:14,218 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:09:14,239 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 10:09:14,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835157156] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:09:14,240 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:09:14,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 10:09:14,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275935919] [2023-08-30 10:09:14,240 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:09:14,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:09:14,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:09:14,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:09:14,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:09:14,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 215 [2023-08-30 10:09:14,275 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 24 transitions, 66 flow. Second operand has 7 states, 7 states have (on average 102.57142857142857) internal successors, (718), 7 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:14,275 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:09:14,275 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 215 [2023-08-30 10:09:14,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:09:14,318 INFO L130 PetriNetUnfolder]: 16/46 cut-off events. [2023-08-30 10:09:14,318 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-08-30 10:09:14,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117 conditions, 46 events. 16/46 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 66 event pairs, 7 based on Foata normal form. 9/55 useless extension candidates. Maximal degree in co-relation 103. Up to 34 conditions per place. [2023-08-30 10:09:14,319 INFO L137 encePairwiseOnDemand]: 212/215 looper letters, 0 selfloop transitions, 0 changer transitions 22/22 dead transitions. [2023-08-30 10:09:14,319 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 22 transitions, 105 flow [2023-08-30 10:09:14,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 10:09:14,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 10:09:14,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 414 transitions. [2023-08-30 10:09:14,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4813953488372093 [2023-08-30 10:09:14,320 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 414 transitions. [2023-08-30 10:09:14,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 414 transitions. [2023-08-30 10:09:14,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:09:14,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 414 transitions. [2023-08-30 10:09:14,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 103.5) internal successors, (414), 4 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:14,323 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 215.0) internal successors, (1075), 5 states have internal predecessors, (1075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:14,324 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 215.0) internal successors, (1075), 5 states have internal predecessors, (1075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:14,324 INFO L175 Difference]: Start difference. First operand has 32 places, 24 transitions, 66 flow. Second operand 4 states and 414 transitions. [2023-08-30 10:09:14,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 22 transitions, 105 flow [2023-08-30 10:09:14,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 22 transitions, 89 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 10:09:14,325 INFO L231 Difference]: Finished difference. Result has 19 places, 0 transitions, 0 flow [2023-08-30 10:09:14,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=215, PETRI_DIFFERENCE_MINUEND_FLOW=29, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=19, PETRI_TRANSITIONS=0} [2023-08-30 10:09:14,325 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -15 predicate places. [2023-08-30 10:09:14,326 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 0 transitions, 0 flow [2023-08-30 10:09:14,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 102.57142857142857) internal successors, (718), 7 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:14,328 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 12 remaining) [2023-08-30 10:09:14,328 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 12 remaining) [2023-08-30 10:09:14,329 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 12 remaining) [2023-08-30 10:09:14,329 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 12 remaining) [2023-08-30 10:09:14,329 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 12 remaining) [2023-08-30 10:09:14,329 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 12 remaining) [2023-08-30 10:09:14,329 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 12 remaining) [2023-08-30 10:09:14,329 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 12 remaining) [2023-08-30 10:09:14,330 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 12 remaining) [2023-08-30 10:09:14,330 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 12 remaining) [2023-08-30 10:09:14,330 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 12 remaining) [2023-08-30 10:09:14,330 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 12 remaining) [2023-08-30 10:09:14,352 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 10:09:14,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:09:14,531 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-30 10:09:14,533 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-30 10:09:14,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 118 transitions, 244 flow [2023-08-30 10:09:14,552 INFO L130 PetriNetUnfolder]: 21/154 cut-off events. [2023-08-30 10:09:14,552 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 10:09:14,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 154 events. 21/154 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 374 event pairs, 0 based on Foata normal form. 0/122 useless extension candidates. Maximal degree in co-relation 81. Up to 6 conditions per place. [2023-08-30 10:09:14,553 INFO L82 GeneralOperation]: Start removeDead. Operand has 107 places, 118 transitions, 244 flow [2023-08-30 10:09:14,553 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 99 places, 109 transitions, 223 flow [2023-08-30 10:09:14,554 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:09:14,554 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 109 transitions, 223 flow [2023-08-30 10:09:14,554 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 99 places, 109 transitions, 223 flow [2023-08-30 10:09:14,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 109 transitions, 223 flow [2023-08-30 10:09:14,563 INFO L130 PetriNetUnfolder]: 20/145 cut-off events. [2023-08-30 10:09:14,564 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:09:14,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150 conditions, 145 events. 20/145 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 360 event pairs, 0 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 81. Up to 6 conditions per place. [2023-08-30 10:09:14,566 INFO L119 LiptonReduction]: Number of co-enabled transitions 3312 [2023-08-30 10:09:16,606 INFO L134 LiptonReduction]: Checked pairs total: 4470 [2023-08-30 10:09:16,606 INFO L136 LiptonReduction]: Total number of compositions: 92 [2023-08-30 10:09:16,608 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-30 10:09:16,609 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;@29153312, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:09:16,609 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-30 10:09:16,612 INFO L130 PetriNetUnfolder]: 5/30 cut-off events. [2023-08-30 10:09:16,612 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:09:16,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:09:16,612 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-30 10:09:16,613 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 10:09:16,613 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:09:16,613 INFO L85 PathProgramCache]: Analyzing trace with hash -864700355, now seen corresponding path program 1 times [2023-08-30 10:09:16,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:09:16,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030247911] [2023-08-30 10:09:16,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:09:16,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:09:16,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 10:09:16,639 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 10:09:16,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 10:09:16,662 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 10:09:16,662 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 10:09:16,663 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-30 10:09:16,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 10:09:16,663 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-30 10:09:16,664 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-30 10:09:16,664 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 10:09:16,664 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-30 10:09:16,690 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 10:09:16,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 140 places, 156 transitions, 330 flow [2023-08-30 10:09:16,723 INFO L130 PetriNetUnfolder]: 37/264 cut-off events. [2023-08-30 10:09:16,724 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 10:09:16,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 278 conditions, 264 events. 37/264 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 784 event pairs, 0 based on Foata normal form. 0/205 useless extension candidates. Maximal degree in co-relation 156. Up to 9 conditions per place. [2023-08-30 10:09:16,725 INFO L82 GeneralOperation]: Start removeDead. Operand has 140 places, 156 transitions, 330 flow [2023-08-30 10:09:16,727 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 140 places, 156 transitions, 330 flow [2023-08-30 10:09:16,728 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:09:16,728 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 140 places, 156 transitions, 330 flow [2023-08-30 10:09:16,729 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 140 places, 156 transitions, 330 flow [2023-08-30 10:09:16,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 140 places, 156 transitions, 330 flow [2023-08-30 10:09:16,757 INFO L130 PetriNetUnfolder]: 37/264 cut-off events. [2023-08-30 10:09:16,757 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 10:09:16,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 278 conditions, 264 events. 37/264 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 784 event pairs, 0 based on Foata normal form. 0/205 useless extension candidates. Maximal degree in co-relation 156. Up to 9 conditions per place. [2023-08-30 10:09:16,764 INFO L119 LiptonReduction]: Number of co-enabled transitions 10584 [2023-08-30 10:09:18,814 INFO L134 LiptonReduction]: Checked pairs total: 22701 [2023-08-30 10:09:18,815 INFO L136 LiptonReduction]: Total number of compositions: 118 [2023-08-30 10:09:18,820 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 10:09:18,820 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;@29153312, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:09:18,821 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-08-30 10:09:18,823 INFO L130 PetriNetUnfolder]: 4/18 cut-off events. [2023-08-30 10:09:18,823 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:09:18,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:09:18,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 10:09:18,823 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:09:18,824 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:09:18,824 INFO L85 PathProgramCache]: Analyzing trace with hash 824247881, now seen corresponding path program 1 times [2023-08-30 10:09:18,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:09:18,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242298861] [2023-08-30 10:09:18,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:09:18,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:09:18,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:09:18,864 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 10:09:18,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:09:18,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242298861] [2023-08-30 10:09:18,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242298861] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:09:18,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:09:18,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:09:18,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78567917] [2023-08-30 10:09:18,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:09:18,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:09:18,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:09:18,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:09:18,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:09:18,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 274 [2023-08-30 10:09:18,876 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 70 transitions, 158 flow. Second operand has 3 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:18,876 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:09:18,876 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 274 [2023-08-30 10:09:18,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:09:19,478 INFO L130 PetriNetUnfolder]: 5379/8562 cut-off events. [2023-08-30 10:09:19,479 INFO L131 PetriNetUnfolder]: For 75/75 co-relation queries the response was YES. [2023-08-30 10:09:19,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17072 conditions, 8562 events. 5379/8562 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 53692 event pairs, 2436 based on Foata normal form. 606/6397 useless extension candidates. Maximal degree in co-relation 1961. Up to 8388 conditions per place. [2023-08-30 10:09:19,524 INFO L137 encePairwiseOnDemand]: 254/274 looper letters, 61 selfloop transitions, 2 changer transitions 0/69 dead transitions. [2023-08-30 10:09:19,525 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 69 transitions, 282 flow [2023-08-30 10:09:19,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:09:19,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:09:19,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 474 transitions. [2023-08-30 10:09:19,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5766423357664233 [2023-08-30 10:09:19,527 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 474 transitions. [2023-08-30 10:09:19,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 474 transitions. [2023-08-30 10:09:19,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:09:19,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 474 transitions. [2023-08-30 10:09:19,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:19,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 274.0) internal successors, (1096), 4 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:19,533 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 274.0) internal successors, (1096), 4 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:19,534 INFO L175 Difference]: Start difference. First operand has 57 places, 70 transitions, 158 flow. Second operand 3 states and 474 transitions. [2023-08-30 10:09:19,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 69 transitions, 282 flow [2023-08-30 10:09:19,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 69 transitions, 282 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 10:09:19,537 INFO L231 Difference]: Finished difference. Result has 59 places, 55 transitions, 142 flow [2023-08-30 10:09:19,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=59, PETRI_TRANSITIONS=55} [2023-08-30 10:09:19,539 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 2 predicate places. [2023-08-30 10:09:19,539 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 55 transitions, 142 flow [2023-08-30 10:09:19,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:19,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:09:19,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:09:19,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 10:09:19,540 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:09:19,541 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:09:19,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1832767290, now seen corresponding path program 1 times [2023-08-30 10:09:19,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:09:19,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899421293] [2023-08-30 10:09:19,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:09:19,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:09:19,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:09:19,586 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 10:09:19,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:09:19,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899421293] [2023-08-30 10:09:19,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899421293] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:09:19,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:09:19,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:09:19,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928374977] [2023-08-30 10:09:19,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:09:19,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:09:19,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:09:19,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:09:19,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:09:19,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 274 [2023-08-30 10:09:19,607 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 55 transitions, 142 flow. Second operand has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:19,607 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:09:19,607 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 274 [2023-08-30 10:09:19,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:09:20,186 INFO L130 PetriNetUnfolder]: 4847/7738 cut-off events. [2023-08-30 10:09:20,187 INFO L131 PetriNetUnfolder]: For 490/490 co-relation queries the response was YES. [2023-08-30 10:09:20,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16223 conditions, 7738 events. 4847/7738 cut-off events. For 490/490 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 47316 event pairs, 1638 based on Foata normal form. 0/5607 useless extension candidates. Maximal degree in co-relation 16135. Up to 7004 conditions per place. [2023-08-30 10:09:20,235 INFO L137 encePairwiseOnDemand]: 267/274 looper letters, 69 selfloop transitions, 3 changer transitions 0/78 dead transitions. [2023-08-30 10:09:20,235 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 78 transitions, 348 flow [2023-08-30 10:09:20,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:09:20,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:09:20,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 458 transitions. [2023-08-30 10:09:20,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5571776155717761 [2023-08-30 10:09:20,237 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 458 transitions. [2023-08-30 10:09:20,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 458 transitions. [2023-08-30 10:09:20,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:09:20,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 458 transitions. [2023-08-30 10:09:20,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:20,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 274.0) internal successors, (1096), 4 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:20,241 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 274.0) internal successors, (1096), 4 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:20,242 INFO L175 Difference]: Start difference. First operand has 59 places, 55 transitions, 142 flow. Second operand 3 states and 458 transitions. [2023-08-30 10:09:20,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 78 transitions, 348 flow [2023-08-30 10:09:20,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 78 transitions, 345 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:09:20,247 INFO L231 Difference]: Finished difference. Result has 61 places, 57 transitions, 165 flow [2023-08-30 10:09:20,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=165, PETRI_PLACES=61, PETRI_TRANSITIONS=57} [2023-08-30 10:09:20,249 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 4 predicate places. [2023-08-30 10:09:20,249 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 57 transitions, 165 flow [2023-08-30 10:09:20,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:20,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:09:20,250 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 10:09:20,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 10:09:20,250 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:09:20,250 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:09:20,251 INFO L85 PathProgramCache]: Analyzing trace with hash 328716546, now seen corresponding path program 1 times [2023-08-30 10:09:20,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:09:20,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60219456] [2023-08-30 10:09:20,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:09:20,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:09:20,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:09:20,287 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:09:20,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:09:20,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60219456] [2023-08-30 10:09:20,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60219456] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:09:20,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:09:20,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:09:20,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911146078] [2023-08-30 10:09:20,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:09:20,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:09:20,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:09:20,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:09:20,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:09:20,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 274 [2023-08-30 10:09:20,299 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 57 transitions, 165 flow. Second operand has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:20,300 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:09:20,300 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 274 [2023-08-30 10:09:20,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:09:20,810 INFO L130 PetriNetUnfolder]: 4496/7157 cut-off events. [2023-08-30 10:09:20,811 INFO L131 PetriNetUnfolder]: For 913/913 co-relation queries the response was YES. [2023-08-30 10:09:20,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15763 conditions, 7157 events. 4496/7157 cut-off events. For 913/913 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 42638 event pairs, 4171 based on Foata normal form. 0/5514 useless extension candidates. Maximal degree in co-relation 12838. Up to 7066 conditions per place. [2023-08-30 10:09:20,843 INFO L137 encePairwiseOnDemand]: 272/274 looper letters, 49 selfloop transitions, 1 changer transitions 0/56 dead transitions. [2023-08-30 10:09:20,844 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 56 transitions, 261 flow [2023-08-30 10:09:20,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:09:20,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:09:20,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 435 transitions. [2023-08-30 10:09:20,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5291970802919708 [2023-08-30 10:09:20,846 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 435 transitions. [2023-08-30 10:09:20,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 435 transitions. [2023-08-30 10:09:20,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:09:20,847 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 435 transitions. [2023-08-30 10:09:20,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:20,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 274.0) internal successors, (1096), 4 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:20,850 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 274.0) internal successors, (1096), 4 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:20,850 INFO L175 Difference]: Start difference. First operand has 61 places, 57 transitions, 165 flow. Second operand 3 states and 435 transitions. [2023-08-30 10:09:20,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 56 transitions, 261 flow [2023-08-30 10:09:20,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 56 transitions, 258 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:09:20,852 INFO L231 Difference]: Finished difference. Result has 61 places, 56 transitions, 160 flow [2023-08-30 10:09:20,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=61, PETRI_TRANSITIONS=56} [2023-08-30 10:09:20,853 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 4 predicate places. [2023-08-30 10:09:20,853 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 56 transitions, 160 flow [2023-08-30 10:09:20,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:20,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:09:20,854 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 10:09:20,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 10:09:20,854 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:09:20,854 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:09:20,854 INFO L85 PathProgramCache]: Analyzing trace with hash 328716547, now seen corresponding path program 1 times [2023-08-30 10:09:20,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:09:20,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625570575] [2023-08-30 10:09:20,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:09:20,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:09:20,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:09:20,886 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 10:09:20,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:09:20,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625570575] [2023-08-30 10:09:20,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625570575] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:09:20,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:09:20,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:09:20,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045065832] [2023-08-30 10:09:20,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:09:20,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:09:20,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:09:20,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:09:20,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:09:20,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 274 [2023-08-30 10:09:20,897 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 56 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:20,897 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:09:20,897 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 274 [2023-08-30 10:09:20,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:09:21,353 INFO L130 PetriNetUnfolder]: 4145/6584 cut-off events. [2023-08-30 10:09:21,354 INFO L131 PetriNetUnfolder]: For 742/742 co-relation queries the response was YES. [2023-08-30 10:09:21,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14296 conditions, 6584 events. 4145/6584 cut-off events. For 742/742 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 41061 event pairs, 517 based on Foata normal form. 0/5218 useless extension candidates. Maximal degree in co-relation 14284. Up to 5585 conditions per place. [2023-08-30 10:09:21,386 INFO L137 encePairwiseOnDemand]: 270/274 looper letters, 75 selfloop transitions, 4 changer transitions 0/85 dead transitions. [2023-08-30 10:09:21,387 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 85 transitions, 390 flow [2023-08-30 10:09:21,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:09:21,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:09:21,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 459 transitions. [2023-08-30 10:09:21,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5583941605839416 [2023-08-30 10:09:21,389 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 459 transitions. [2023-08-30 10:09:21,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 459 transitions. [2023-08-30 10:09:21,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:09:21,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 459 transitions. [2023-08-30 10:09:21,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:21,392 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 274.0) internal successors, (1096), 4 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:21,392 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 274.0) internal successors, (1096), 4 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:21,392 INFO L175 Difference]: Start difference. First operand has 61 places, 56 transitions, 160 flow. Second operand 3 states and 459 transitions. [2023-08-30 10:09:21,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 85 transitions, 390 flow [2023-08-30 10:09:21,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 85 transitions, 389 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:09:21,396 INFO L231 Difference]: Finished difference. Result has 62 places, 56 transitions, 171 flow [2023-08-30 10:09:21,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=171, PETRI_PLACES=62, PETRI_TRANSITIONS=56} [2023-08-30 10:09:21,397 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 5 predicate places. [2023-08-30 10:09:21,397 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 56 transitions, 171 flow [2023-08-30 10:09:21,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:21,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:09:21,398 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:09:21,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 10:09:21,398 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:09:21,399 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:09:21,399 INFO L85 PathProgramCache]: Analyzing trace with hash -317145071, now seen corresponding path program 1 times [2023-08-30 10:09:21,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:09:21,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131919829] [2023-08-30 10:09:21,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:09:21,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:09:21,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:09:21,461 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 10:09:21,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:09:21,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131919829] [2023-08-30 10:09:21,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131919829] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:09:21,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:09:21,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:09:21,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858102491] [2023-08-30 10:09:21,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:09:21,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 10:09:21,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:09:21,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 10:09:21,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:09:21,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 274 [2023-08-30 10:09:21,502 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 56 transitions, 171 flow. Second operand has 5 states, 5 states have (on average 125.8) internal successors, (629), 5 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:21,503 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:09:21,503 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 274 [2023-08-30 10:09:21,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:09:22,189 INFO L130 PetriNetUnfolder]: 5073/8304 cut-off events. [2023-08-30 10:09:22,190 INFO L131 PetriNetUnfolder]: For 2530/2530 co-relation queries the response was YES. [2023-08-30 10:09:22,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18463 conditions, 8304 events. 5073/8304 cut-off events. For 2530/2530 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 51762 event pairs, 812 based on Foata normal form. 0/6774 useless extension candidates. Maximal degree in co-relation 18449. Up to 4555 conditions per place. [2023-08-30 10:09:22,228 INFO L137 encePairwiseOnDemand]: 259/274 looper letters, 164 selfloop transitions, 19 changer transitions 0/189 dead transitions. [2023-08-30 10:09:22,229 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 189 transitions, 923 flow [2023-08-30 10:09:22,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 10:09:22,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 10:09:22,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1051 transitions. [2023-08-30 10:09:22,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5479666319082378 [2023-08-30 10:09:22,232 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1051 transitions. [2023-08-30 10:09:22,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1051 transitions. [2023-08-30 10:09:22,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:09:22,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1051 transitions. [2023-08-30 10:09:22,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 150.14285714285714) internal successors, (1051), 7 states have internal predecessors, (1051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:22,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 274.0) internal successors, (2192), 8 states have internal predecessors, (2192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:22,240 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 274.0) internal successors, (2192), 8 states have internal predecessors, (2192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:22,240 INFO L175 Difference]: Start difference. First operand has 62 places, 56 transitions, 171 flow. Second operand 7 states and 1051 transitions. [2023-08-30 10:09:22,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 189 transitions, 923 flow [2023-08-30 10:09:22,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 189 transitions, 905 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:09:22,245 INFO L231 Difference]: Finished difference. Result has 72 places, 72 transitions, 326 flow [2023-08-30 10:09:22,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=326, PETRI_PLACES=72, PETRI_TRANSITIONS=72} [2023-08-30 10:09:22,247 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 15 predicate places. [2023-08-30 10:09:22,247 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 72 transitions, 326 flow [2023-08-30 10:09:22,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 125.8) internal successors, (629), 5 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:22,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:09:22,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:09:22,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 10:09:22,248 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:09:22,248 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:09:22,249 INFO L85 PathProgramCache]: Analyzing trace with hash -317145070, now seen corresponding path program 1 times [2023-08-30 10:09:22,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:09:22,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212378227] [2023-08-30 10:09:22,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:09:22,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:09:22,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:09:22,301 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 10:09:22,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:09:22,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212378227] [2023-08-30 10:09:22,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212378227] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:09:22,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:09:22,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:09:22,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562386977] [2023-08-30 10:09:22,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:09:22,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 10:09:22,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:09:22,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 10:09:22,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:09:22,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 274 [2023-08-30 10:09:22,336 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 72 transitions, 326 flow. Second operand has 5 states, 5 states have (on average 125.8) internal successors, (629), 5 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:22,336 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:09:22,336 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 274 [2023-08-30 10:09:22,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:09:23,098 INFO L130 PetriNetUnfolder]: 4782/7986 cut-off events. [2023-08-30 10:09:23,098 INFO L131 PetriNetUnfolder]: For 5782/5782 co-relation queries the response was YES. [2023-08-30 10:09:23,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21415 conditions, 7986 events. 4782/7986 cut-off events. For 5782/5782 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 50719 event pairs, 746 based on Foata normal form. 267/7634 useless extension candidates. Maximal degree in co-relation 21395. Up to 4633 conditions per place. [2023-08-30 10:09:23,152 INFO L137 encePairwiseOnDemand]: 259/274 looper letters, 167 selfloop transitions, 24 changer transitions 0/197 dead transitions. [2023-08-30 10:09:23,152 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 197 transitions, 1106 flow [2023-08-30 10:09:23,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 10:09:23,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 10:09:23,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1048 transitions. [2023-08-30 10:09:23,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5464025026068822 [2023-08-30 10:09:23,155 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1048 transitions. [2023-08-30 10:09:23,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1048 transitions. [2023-08-30 10:09:23,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:09:23,156 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1048 transitions. [2023-08-30 10:09:23,159 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 149.71428571428572) internal successors, (1048), 7 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:23,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 274.0) internal successors, (2192), 8 states have internal predecessors, (2192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:23,162 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 274.0) internal successors, (2192), 8 states have internal predecessors, (2192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:23,162 INFO L175 Difference]: Start difference. First operand has 72 places, 72 transitions, 326 flow. Second operand 7 states and 1048 transitions. [2023-08-30 10:09:23,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 197 transitions, 1106 flow [2023-08-30 10:09:23,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 197 transitions, 1098 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-30 10:09:23,184 INFO L231 Difference]: Finished difference. Result has 81 places, 84 transitions, 512 flow [2023-08-30 10:09:23,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=512, PETRI_PLACES=81, PETRI_TRANSITIONS=84} [2023-08-30 10:09:23,185 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 24 predicate places. [2023-08-30 10:09:23,185 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 84 transitions, 512 flow [2023-08-30 10:09:23,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 125.8) internal successors, (629), 5 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:23,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:09:23,186 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:09:23,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 10:09:23,186 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:09:23,187 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:09:23,187 INFO L85 PathProgramCache]: Analyzing trace with hash -288512590, now seen corresponding path program 1 times [2023-08-30 10:09:23,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:09:23,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295339782] [2023-08-30 10:09:23,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:09:23,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:09:23,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:09:23,235 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 10:09:23,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:09:23,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295339782] [2023-08-30 10:09:23,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295339782] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:09:23,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:09:23,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:09:23,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551295909] [2023-08-30 10:09:23,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:09:23,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 10:09:23,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:09:23,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 10:09:23,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:09:23,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 274 [2023-08-30 10:09:23,261 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 84 transitions, 512 flow. Second operand has 5 states, 5 states have (on average 126.4) internal successors, (632), 5 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:23,261 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:09:23,261 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 274 [2023-08-30 10:09:23,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:09:24,052 INFO L130 PetriNetUnfolder]: 5203/8576 cut-off events. [2023-08-30 10:09:24,052 INFO L131 PetriNetUnfolder]: For 14238/14238 co-relation queries the response was YES. [2023-08-30 10:09:24,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25925 conditions, 8576 events. 5203/8576 cut-off events. For 14238/14238 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 53837 event pairs, 1041 based on Foata normal form. 215/8139 useless extension candidates. Maximal degree in co-relation 25900. Up to 5233 conditions per place. [2023-08-30 10:09:24,100 INFO L137 encePairwiseOnDemand]: 261/274 looper letters, 146 selfloop transitions, 22 changer transitions 0/174 dead transitions. [2023-08-30 10:09:24,100 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 174 transitions, 1180 flow [2023-08-30 10:09:24,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 10:09:24,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 10:09:24,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 883 transitions. [2023-08-30 10:09:24,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5371046228710462 [2023-08-30 10:09:24,103 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 883 transitions. [2023-08-30 10:09:24,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 883 transitions. [2023-08-30 10:09:24,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:09:24,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 883 transitions. [2023-08-30 10:09:24,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 147.16666666666666) internal successors, (883), 6 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:24,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 274.0) internal successors, (1918), 7 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:24,109 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 274.0) internal successors, (1918), 7 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:24,109 INFO L175 Difference]: Start difference. First operand has 81 places, 84 transitions, 512 flow. Second operand 6 states and 883 transitions. [2023-08-30 10:09:24,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 174 transitions, 1180 flow [2023-08-30 10:09:24,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 174 transitions, 1163 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-30 10:09:24,176 INFO L231 Difference]: Finished difference. Result has 88 places, 94 transitions, 700 flow [2023-08-30 10:09:24,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=700, PETRI_PLACES=88, PETRI_TRANSITIONS=94} [2023-08-30 10:09:24,178 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 31 predicate places. [2023-08-30 10:09:24,178 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 94 transitions, 700 flow [2023-08-30 10:09:24,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 126.4) internal successors, (632), 5 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:24,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:09:24,179 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:09:24,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 10:09:24,179 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:09:24,180 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:09:24,180 INFO L85 PathProgramCache]: Analyzing trace with hash -288512564, now seen corresponding path program 1 times [2023-08-30 10:09:24,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:09:24,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847503661] [2023-08-30 10:09:24,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:09:24,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:09:24,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:09:24,233 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 10:09:24,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:09:24,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847503661] [2023-08-30 10:09:24,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847503661] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:09:24,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:09:24,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:09:24,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553048514] [2023-08-30 10:09:24,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:09:24,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 10:09:24,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:09:24,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 10:09:24,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:09:24,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 274 [2023-08-30 10:09:24,257 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 94 transitions, 700 flow. Second operand has 5 states, 5 states have (on average 126.4) internal successors, (632), 5 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:24,257 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:09:24,257 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 274 [2023-08-30 10:09:24,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:09:24,953 INFO L130 PetriNetUnfolder]: 4757/7881 cut-off events. [2023-08-30 10:09:24,953 INFO L131 PetriNetUnfolder]: For 19660/19660 co-relation queries the response was YES. [2023-08-30 10:09:24,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25156 conditions, 7881 events. 4757/7881 cut-off events. For 19660/19660 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 49031 event pairs, 997 based on Foata normal form. 215/7487 useless extension candidates. Maximal degree in co-relation 25126. Up to 4985 conditions per place. [2023-08-30 10:09:25,003 INFO L137 encePairwiseOnDemand]: 261/274 looper letters, 141 selfloop transitions, 20 changer transitions 0/167 dead transitions. [2023-08-30 10:09:25,004 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 167 transitions, 1183 flow [2023-08-30 10:09:25,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 10:09:25,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 10:09:25,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 882 transitions. [2023-08-30 10:09:25,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5364963503649635 [2023-08-30 10:09:25,007 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 882 transitions. [2023-08-30 10:09:25,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 882 transitions. [2023-08-30 10:09:25,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:09:25,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 882 transitions. [2023-08-30 10:09:25,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 147.0) internal successors, (882), 6 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:25,012 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 274.0) internal successors, (1918), 7 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:25,012 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 274.0) internal successors, (1918), 7 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:25,012 INFO L175 Difference]: Start difference. First operand has 88 places, 94 transitions, 700 flow. Second operand 6 states and 882 transitions. [2023-08-30 10:09:25,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 167 transitions, 1183 flow [2023-08-30 10:09:25,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 167 transitions, 1156 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-30 10:09:25,094 INFO L231 Difference]: Finished difference. Result has 91 places, 87 transitions, 632 flow [2023-08-30 10:09:25,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=592, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=632, PETRI_PLACES=91, PETRI_TRANSITIONS=87} [2023-08-30 10:09:25,094 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 34 predicate places. [2023-08-30 10:09:25,095 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 87 transitions, 632 flow [2023-08-30 10:09:25,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 126.4) internal successors, (632), 5 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:25,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:09:25,095 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:09:25,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 10:09:25,096 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:09:25,096 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:09:25,096 INFO L85 PathProgramCache]: Analyzing trace with hash -87588339, now seen corresponding path program 1 times [2023-08-30 10:09:25,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:09:25,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106472449] [2023-08-30 10:09:25,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:09:25,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:09:25,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:09:25,168 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 10:09:25,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:09:25,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106472449] [2023-08-30 10:09:25,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106472449] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:09:25,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327443516] [2023-08-30 10:09:25,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:09:25,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:09:25,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:09:25,170 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 10:09:25,173 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 10:09:25,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:09:25,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 10:09:25,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:09:25,292 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 10:09:25,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:09:25,355 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 10:09:25,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1327443516] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:09:25,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:09:25,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 10 [2023-08-30 10:09:25,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499871772] [2023-08-30 10:09:25,359 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:09:25,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 10:09:25,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:09:25,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 10:09:25,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-08-30 10:09:25,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 274 [2023-08-30 10:09:25,465 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 87 transitions, 632 flow. Second operand has 12 states, 12 states have (on average 122.41666666666667) internal successors, (1469), 12 states have internal predecessors, (1469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:25,465 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:09:25,465 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 274 [2023-08-30 10:09:25,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:09:26,699 INFO L130 PetriNetUnfolder]: 6437/10679 cut-off events. [2023-08-30 10:09:26,699 INFO L131 PetriNetUnfolder]: For 25613/25613 co-relation queries the response was YES. [2023-08-30 10:09:26,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33513 conditions, 10679 events. 6437/10679 cut-off events. For 25613/25613 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 69985 event pairs, 535 based on Foata normal form. 233/10055 useless extension candidates. Maximal degree in co-relation 33483. Up to 3807 conditions per place. [2023-08-30 10:09:26,760 INFO L137 encePairwiseOnDemand]: 260/274 looper letters, 411 selfloop transitions, 57 changer transitions 2/476 dead transitions. [2023-08-30 10:09:26,760 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 476 transitions, 2844 flow [2023-08-30 10:09:26,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-30 10:09:26,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-30 10:09:26,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2951 transitions. [2023-08-30 10:09:26,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5128606187000347 [2023-08-30 10:09:26,767 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2951 transitions. [2023-08-30 10:09:26,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2951 transitions. [2023-08-30 10:09:26,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:09:26,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2951 transitions. [2023-08-30 10:09:26,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 140.52380952380952) internal successors, (2951), 21 states have internal predecessors, (2951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:26,783 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 274.0) internal successors, (6028), 22 states have internal predecessors, (6028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:26,784 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 274.0) internal successors, (6028), 22 states have internal predecessors, (6028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:26,784 INFO L175 Difference]: Start difference. First operand has 91 places, 87 transitions, 632 flow. Second operand 21 states and 2951 transitions. [2023-08-30 10:09:26,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 476 transitions, 2844 flow [2023-08-30 10:09:26,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 476 transitions, 2826 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-30 10:09:26,885 INFO L231 Difference]: Finished difference. Result has 113 places, 115 transitions, 1062 flow [2023-08-30 10:09:26,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=602, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1062, PETRI_PLACES=113, PETRI_TRANSITIONS=115} [2023-08-30 10:09:26,886 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 56 predicate places. [2023-08-30 10:09:26,886 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 115 transitions, 1062 flow [2023-08-30 10:09:26,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 122.41666666666667) internal successors, (1469), 12 states have internal predecessors, (1469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:26,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:09:26,887 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:09:26,893 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-30 10:09:27,092 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,SelfDestructingSolverStorable14 [2023-08-30 10:09:27,092 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:09:27,093 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:09:27,093 INFO L85 PathProgramCache]: Analyzing trace with hash 904566469, now seen corresponding path program 1 times [2023-08-30 10:09:27,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:09:27,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854538483] [2023-08-30 10:09:27,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:09:27,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:09:27,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:09:27,173 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 10:09:27,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:09:27,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854538483] [2023-08-30 10:09:27,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854538483] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:09:27,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:09:27,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 10:09:27,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509677591] [2023-08-30 10:09:27,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:09:27,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:09:27,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:09:27,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:09:27,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:09:27,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 274 [2023-08-30 10:09:27,226 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 115 transitions, 1062 flow. Second operand has 7 states, 7 states have (on average 122.14285714285714) internal successors, (855), 7 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:27,227 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:09:27,227 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 274 [2023-08-30 10:09:27,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:09:28,180 INFO L130 PetriNetUnfolder]: 6560/10986 cut-off events. [2023-08-30 10:09:28,180 INFO L131 PetriNetUnfolder]: For 36644/36644 co-relation queries the response was YES. [2023-08-30 10:09:28,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37750 conditions, 10986 events. 6560/10986 cut-off events. For 36644/36644 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 73171 event pairs, 1265 based on Foata normal form. 116/10221 useless extension candidates. Maximal degree in co-relation 37713. Up to 7175 conditions per place. [2023-08-30 10:09:28,245 INFO L137 encePairwiseOnDemand]: 261/274 looper letters, 229 selfloop transitions, 31 changer transitions 0/266 dead transitions. [2023-08-30 10:09:28,245 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 266 transitions, 2006 flow [2023-08-30 10:09:28,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 10:09:28,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 10:09:28,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1418 transitions. [2023-08-30 10:09:28,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5175182481751824 [2023-08-30 10:09:28,249 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1418 transitions. [2023-08-30 10:09:28,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1418 transitions. [2023-08-30 10:09:28,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:09:28,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1418 transitions. [2023-08-30 10:09:28,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 141.8) internal successors, (1418), 10 states have internal predecessors, (1418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:28,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 274.0) internal successors, (3014), 11 states have internal predecessors, (3014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:28,258 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 274.0) internal successors, (3014), 11 states have internal predecessors, (3014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:28,258 INFO L175 Difference]: Start difference. First operand has 113 places, 115 transitions, 1062 flow. Second operand 10 states and 1418 transitions. [2023-08-30 10:09:28,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 266 transitions, 2006 flow [2023-08-30 10:09:28,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 266 transitions, 1882 flow, removed 47 selfloop flow, removed 4 redundant places. [2023-08-30 10:09:28,463 INFO L231 Difference]: Finished difference. Result has 120 places, 115 transitions, 1030 flow [2023-08-30 10:09:28,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=888, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1030, PETRI_PLACES=120, PETRI_TRANSITIONS=115} [2023-08-30 10:09:28,464 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 63 predicate places. [2023-08-30 10:09:28,464 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 115 transitions, 1030 flow [2023-08-30 10:09:28,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 122.14285714285714) internal successors, (855), 7 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:28,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:09:28,465 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:09:28,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 10:09:28,465 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:09:28,466 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:09:28,466 INFO L85 PathProgramCache]: Analyzing trace with hash -87588364, now seen corresponding path program 1 times [2023-08-30 10:09:28,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:09:28,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476354956] [2023-08-30 10:09:28,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:09:28,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:09:28,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:09:28,536 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 10:09:28,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:09:28,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476354956] [2023-08-30 10:09:28,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476354956] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:09:28,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118552193] [2023-08-30 10:09:28,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:09:28,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:09:28,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:09:28,539 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 10:09:28,576 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 10:09:28,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:09:28,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 10:09:28,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:09:28,648 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 10:09:28,648 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:09:28,696 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 10:09:28,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [118552193] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:09:28,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:09:28,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 10 [2023-08-30 10:09:28,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239267064] [2023-08-30 10:09:28,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:09:28,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 10:09:28,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:09:28,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 10:09:28,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-08-30 10:09:28,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 274 [2023-08-30 10:09:28,774 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 115 transitions, 1030 flow. Second operand has 12 states, 12 states have (on average 121.41666666666667) internal successors, (1457), 12 states have internal predecessors, (1457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:28,774 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:09:28,774 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 274 [2023-08-30 10:09:28,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:09:30,225 INFO L130 PetriNetUnfolder]: 7204/12151 cut-off events. [2023-08-30 10:09:30,225 INFO L131 PetriNetUnfolder]: For 39969/39969 co-relation queries the response was YES. [2023-08-30 10:09:30,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41212 conditions, 12151 events. 7204/12151 cut-off events. For 39969/39969 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 83137 event pairs, 336 based on Foata normal form. 78/11214 useless extension candidates. Maximal degree in co-relation 41170. Up to 2598 conditions per place. [2023-08-30 10:09:30,282 INFO L137 encePairwiseOnDemand]: 259/274 looper letters, 404 selfloop transitions, 92 changer transitions 2/504 dead transitions. [2023-08-30 10:09:30,282 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 504 transitions, 3350 flow [2023-08-30 10:09:30,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-30 10:09:30,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-30 10:09:30,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2930 transitions. [2023-08-30 10:09:30,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5092109836635385 [2023-08-30 10:09:30,291 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2930 transitions. [2023-08-30 10:09:30,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2930 transitions. [2023-08-30 10:09:30,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:09:30,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2930 transitions. [2023-08-30 10:09:30,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 139.52380952380952) internal successors, (2930), 21 states have internal predecessors, (2930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:30,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 274.0) internal successors, (6028), 22 states have internal predecessors, (6028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:30,307 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 274.0) internal successors, (6028), 22 states have internal predecessors, (6028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:30,307 INFO L175 Difference]: Start difference. First operand has 120 places, 115 transitions, 1030 flow. Second operand 21 states and 2930 transitions. [2023-08-30 10:09:30,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 504 transitions, 3350 flow [2023-08-30 10:09:30,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 504 transitions, 3256 flow, removed 27 selfloop flow, removed 4 redundant places. [2023-08-30 10:09:30,501 INFO L231 Difference]: Finished difference. Result has 141 places, 141 transitions, 1529 flow [2023-08-30 10:09:30,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=951, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1529, PETRI_PLACES=141, PETRI_TRANSITIONS=141} [2023-08-30 10:09:30,501 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 84 predicate places. [2023-08-30 10:09:30,501 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 141 transitions, 1529 flow [2023-08-30 10:09:30,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 121.41666666666667) internal successors, (1457), 12 states have internal predecessors, (1457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:30,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:09:30,503 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:09:30,511 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 10:09:30,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:09:30,708 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:09:30,708 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:09:30,708 INFO L85 PathProgramCache]: Analyzing trace with hash 174764067, now seen corresponding path program 2 times [2023-08-30 10:09:30,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:09:30,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395187257] [2023-08-30 10:09:30,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:09:30,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:09:30,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:09:30,788 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 10:09:30,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:09:30,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395187257] [2023-08-30 10:09:30,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395187257] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:09:30,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:09:30,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 10:09:30,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382791989] [2023-08-30 10:09:30,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:09:30,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:09:30,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:09:30,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:09:30,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:09:30,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 274 [2023-08-30 10:09:30,842 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 141 transitions, 1529 flow. Second operand has 7 states, 7 states have (on average 122.14285714285714) internal successors, (855), 7 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:30,842 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:09:30,843 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 274 [2023-08-30 10:09:30,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:09:32,135 INFO L130 PetriNetUnfolder]: 7218/12047 cut-off events. [2023-08-30 10:09:32,135 INFO L131 PetriNetUnfolder]: For 51355/51355 co-relation queries the response was YES. [2023-08-30 10:09:32,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45165 conditions, 12047 events. 7218/12047 cut-off events. For 51355/51355 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 80611 event pairs, 1607 based on Foata normal form. 127/11180 useless extension candidates. Maximal degree in co-relation 45117. Up to 8141 conditions per place. [2023-08-30 10:09:32,207 INFO L137 encePairwiseOnDemand]: 261/274 looper letters, 271 selfloop transitions, 45 changer transitions 0/322 dead transitions. [2023-08-30 10:09:32,207 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 322 transitions, 2719 flow [2023-08-30 10:09:32,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 10:09:32,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 10:09:32,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1691 transitions. [2023-08-30 10:09:32,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.514294403892944 [2023-08-30 10:09:32,210 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1691 transitions. [2023-08-30 10:09:32,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1691 transitions. [2023-08-30 10:09:32,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:09:32,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1691 transitions. [2023-08-30 10:09:32,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 140.91666666666666) internal successors, (1691), 12 states have internal predecessors, (1691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:32,216 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 274.0) internal successors, (3562), 13 states have internal predecessors, (3562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:32,217 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 274.0) internal successors, (3562), 13 states have internal predecessors, (3562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:32,217 INFO L175 Difference]: Start difference. First operand has 141 places, 141 transitions, 1529 flow. Second operand 12 states and 1691 transitions. [2023-08-30 10:09:32,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 322 transitions, 2719 flow [2023-08-30 10:09:32,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 322 transitions, 2356 flow, removed 74 selfloop flow, removed 17 redundant places. [2023-08-30 10:09:32,612 INFO L231 Difference]: Finished difference. Result has 137 places, 141 transitions, 1324 flow [2023-08-30 10:09:32,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=1057, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1324, PETRI_PLACES=137, PETRI_TRANSITIONS=141} [2023-08-30 10:09:32,613 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 80 predicate places. [2023-08-30 10:09:32,613 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 141 transitions, 1324 flow [2023-08-30 10:09:32,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 122.14285714285714) internal successors, (855), 7 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:32,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:09:32,614 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:09:32,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-30 10:09:32,614 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:09:32,614 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:09:32,614 INFO L85 PathProgramCache]: Analyzing trace with hash 168507956, now seen corresponding path program 1 times [2023-08-30 10:09:32,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:09:32,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944229369] [2023-08-30 10:09:32,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:09:32,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:09:32,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:09:32,678 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 10:09:32,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:09:32,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944229369] [2023-08-30 10:09:32,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944229369] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:09:32,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:09:32,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 10:09:32,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612566097] [2023-08-30 10:09:32,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:09:32,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:09:32,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:09:32,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:09:32,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:09:32,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 274 [2023-08-30 10:09:32,730 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 141 transitions, 1324 flow. Second operand has 7 states, 7 states have (on average 122.14285714285714) internal successors, (855), 7 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:32,730 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:09:32,730 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 274 [2023-08-30 10:09:32,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:09:33,923 INFO L130 PetriNetUnfolder]: 6882/11444 cut-off events. [2023-08-30 10:09:33,923 INFO L131 PetriNetUnfolder]: For 32297/32297 co-relation queries the response was YES. [2023-08-30 10:09:33,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39144 conditions, 11444 events. 6882/11444 cut-off events. For 32297/32297 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 75562 event pairs, 1126 based on Foata normal form. 127/10633 useless extension candidates. Maximal degree in co-relation 39102. Up to 6367 conditions per place. [2023-08-30 10:09:33,997 INFO L137 encePairwiseOnDemand]: 261/274 looper letters, 267 selfloop transitions, 58 changer transitions 2/333 dead transitions. [2023-08-30 10:09:33,997 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 333 transitions, 2431 flow [2023-08-30 10:09:33,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 10:09:33,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 10:09:34,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1953 transitions. [2023-08-30 10:09:34,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5091240875912408 [2023-08-30 10:09:34,003 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1953 transitions. [2023-08-30 10:09:34,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1953 transitions. [2023-08-30 10:09:34,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:09:34,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1953 transitions. [2023-08-30 10:09:34,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 139.5) internal successors, (1953), 14 states have internal predecessors, (1953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:34,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 274.0) internal successors, (4110), 15 states have internal predecessors, (4110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:34,016 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 274.0) internal successors, (4110), 15 states have internal predecessors, (4110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:34,016 INFO L175 Difference]: Start difference. First operand has 137 places, 141 transitions, 1324 flow. Second operand 14 states and 1953 transitions. [2023-08-30 10:09:34,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 333 transitions, 2431 flow [2023-08-30 10:09:34,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 333 transitions, 2247 flow, removed 10 selfloop flow, removed 16 redundant places. [2023-08-30 10:09:34,282 INFO L231 Difference]: Finished difference. Result has 133 places, 132 transitions, 1116 flow [2023-08-30 10:09:34,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=967, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1116, PETRI_PLACES=133, PETRI_TRANSITIONS=132} [2023-08-30 10:09:34,283 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 76 predicate places. [2023-08-30 10:09:34,283 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 132 transitions, 1116 flow [2023-08-30 10:09:34,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 122.14285714285714) internal successors, (855), 7 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:34,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:09:34,284 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:09:34,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-30 10:09:34,284 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:09:34,285 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:09:34,285 INFO L85 PathProgramCache]: Analyzing trace with hash 880480158, now seen corresponding path program 1 times [2023-08-30 10:09:34,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:09:34,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107725671] [2023-08-30 10:09:34,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:09:34,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:09:34,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:09:34,377 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 10:09:34,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:09:34,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107725671] [2023-08-30 10:09:34,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107725671] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:09:34,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:09:34,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 10:09:34,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187830271] [2023-08-30 10:09:34,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:09:34,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:09:34,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:09:34,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:09:34,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:09:34,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 274 [2023-08-30 10:09:34,429 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 132 transitions, 1116 flow. Second operand has 7 states, 7 states have (on average 122.28571428571429) internal successors, (856), 7 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:34,429 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:09:34,429 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 274 [2023-08-30 10:09:34,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:09:35,647 INFO L130 PetriNetUnfolder]: 7759/12887 cut-off events. [2023-08-30 10:09:35,647 INFO L131 PetriNetUnfolder]: For 32970/32970 co-relation queries the response was YES. [2023-08-30 10:09:35,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43072 conditions, 12887 events. 7759/12887 cut-off events. For 32970/32970 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 86604 event pairs, 1303 based on Foata normal form. 78/11894 useless extension candidates. Maximal degree in co-relation 43034. Up to 8097 conditions per place. [2023-08-30 10:09:35,707 INFO L137 encePairwiseOnDemand]: 262/274 looper letters, 233 selfloop transitions, 50 changer transitions 0/289 dead transitions. [2023-08-30 10:09:35,707 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 289 transitions, 2288 flow [2023-08-30 10:09:35,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 10:09:35,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 10:09:35,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1281 transitions. [2023-08-30 10:09:35,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5194647201946472 [2023-08-30 10:09:35,710 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1281 transitions. [2023-08-30 10:09:35,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1281 transitions. [2023-08-30 10:09:35,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:09:35,710 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1281 transitions. [2023-08-30 10:09:35,712 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 142.33333333333334) internal successors, (1281), 9 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:35,714 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 274.0) internal successors, (2740), 10 states have internal predecessors, (2740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:35,715 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 274.0) internal successors, (2740), 10 states have internal predecessors, (2740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:35,715 INFO L175 Difference]: Start difference. First operand has 133 places, 132 transitions, 1116 flow. Second operand 9 states and 1281 transitions. [2023-08-30 10:09:35,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 289 transitions, 2288 flow [2023-08-30 10:09:35,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 289 transitions, 2242 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-08-30 10:09:35,925 INFO L231 Difference]: Finished difference. Result has 136 places, 150 transitions, 1429 flow [2023-08-30 10:09:35,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=1059, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1429, PETRI_PLACES=136, PETRI_TRANSITIONS=150} [2023-08-30 10:09:35,925 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 79 predicate places. [2023-08-30 10:09:35,926 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 150 transitions, 1429 flow [2023-08-30 10:09:35,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 122.28571428571429) internal successors, (856), 7 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:35,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:09:35,926 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:09:35,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-30 10:09:35,926 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:09:35,926 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:09:35,926 INFO L85 PathProgramCache]: Analyzing trace with hash 880480218, now seen corresponding path program 1 times [2023-08-30 10:09:35,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:09:35,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369172323] [2023-08-30 10:09:35,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:09:35,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:09:35,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:09:36,023 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 10:09:36,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:09:36,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369172323] [2023-08-30 10:09:36,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369172323] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:09:36,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:09:36,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 10:09:36,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174847716] [2023-08-30 10:09:36,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:09:36,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:09:36,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:09:36,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:09:36,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:09:36,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 274 [2023-08-30 10:09:36,075 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 150 transitions, 1429 flow. Second operand has 7 states, 7 states have (on average 122.28571428571429) internal successors, (856), 7 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:36,075 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:09:36,076 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 274 [2023-08-30 10:09:36,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:09:37,146 INFO L130 PetriNetUnfolder]: 7659/12748 cut-off events. [2023-08-30 10:09:37,146 INFO L131 PetriNetUnfolder]: For 38603/38603 co-relation queries the response was YES. [2023-08-30 10:09:37,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44407 conditions, 12748 events. 7659/12748 cut-off events. For 38603/38603 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 85847 event pairs, 1293 based on Foata normal form. 78/11764 useless extension candidates. Maximal degree in co-relation 44368. Up to 7897 conditions per place. [2023-08-30 10:09:37,232 INFO L137 encePairwiseOnDemand]: 263/274 looper letters, 244 selfloop transitions, 49 changer transitions 2/301 dead transitions. [2023-08-30 10:09:37,232 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 301 transitions, 2457 flow [2023-08-30 10:09:37,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 10:09:37,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 10:09:37,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1413 transitions. [2023-08-30 10:09:37,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5156934306569343 [2023-08-30 10:09:37,235 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1413 transitions. [2023-08-30 10:09:37,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1413 transitions. [2023-08-30 10:09:37,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:09:37,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1413 transitions. [2023-08-30 10:09:37,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 141.3) internal successors, (1413), 10 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:37,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 274.0) internal successors, (3014), 11 states have internal predecessors, (3014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:37,240 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 274.0) internal successors, (3014), 11 states have internal predecessors, (3014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:37,240 INFO L175 Difference]: Start difference. First operand has 136 places, 150 transitions, 1429 flow. Second operand 10 states and 1413 transitions. [2023-08-30 10:09:37,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 301 transitions, 2457 flow [2023-08-30 10:09:37,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 301 transitions, 2425 flow, removed 9 selfloop flow, removed 3 redundant places. [2023-08-30 10:09:37,575 INFO L231 Difference]: Finished difference. Result has 140 places, 148 transitions, 1460 flow [2023-08-30 10:09:37,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=1362, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1460, PETRI_PLACES=140, PETRI_TRANSITIONS=148} [2023-08-30 10:09:37,575 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 83 predicate places. [2023-08-30 10:09:37,576 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 148 transitions, 1460 flow [2023-08-30 10:09:37,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 122.28571428571429) internal successors, (856), 7 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:37,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:09:37,576 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:09:37,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-30 10:09:37,576 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:09:37,577 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:09:37,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1096124189, now seen corresponding path program 1 times [2023-08-30 10:09:37,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:09:37,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354093669] [2023-08-30 10:09:37,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:09:37,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:09:37,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:09:37,659 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 10:09:37,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:09:37,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354093669] [2023-08-30 10:09:37,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354093669] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:09:37,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412945858] [2023-08-30 10:09:37,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:09:37,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:09:37,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:09:37,662 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 10:09:37,689 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 10:09:37,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:09:37,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 10:09:37,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:09:37,797 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 10:09:37,798 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:09:37,874 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 10:09:37,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412945858] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:09:37,875 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:09:37,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2023-08-30 10:09:37,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287401271] [2023-08-30 10:09:37,876 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:09:37,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 10:09:37,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:09:37,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 10:09:37,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2023-08-30 10:09:37,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 274 [2023-08-30 10:09:37,965 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 148 transitions, 1460 flow. Second operand has 16 states, 16 states have (on average 116.0625) internal successors, (1857), 16 states have internal predecessors, (1857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:37,966 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:09:37,966 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 274 [2023-08-30 10:09:37,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:09:39,505 INFO L130 PetriNetUnfolder]: 7777/13023 cut-off events. [2023-08-30 10:09:39,505 INFO L131 PetriNetUnfolder]: For 37068/37068 co-relation queries the response was YES. [2023-08-30 10:09:39,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45640 conditions, 13023 events. 7777/13023 cut-off events. For 37068/37068 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 88507 event pairs, 485 based on Foata normal form. 78/12002 useless extension candidates. Maximal degree in co-relation 45600. Up to 2624 conditions per place. [2023-08-30 10:09:39,581 INFO L137 encePairwiseOnDemand]: 262/274 looper letters, 460 selfloop transitions, 103 changer transitions 8/577 dead transitions. [2023-08-30 10:09:39,582 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 577 transitions, 3826 flow [2023-08-30 10:09:39,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-08-30 10:09:39,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-08-30 10:09:39,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3564 transitions. [2023-08-30 10:09:39,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48175182481751827 [2023-08-30 10:09:39,585 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3564 transitions. [2023-08-30 10:09:39,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3564 transitions. [2023-08-30 10:09:39,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:09:39,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3564 transitions. [2023-08-30 10:09:39,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 132.0) internal successors, (3564), 27 states have internal predecessors, (3564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:39,596 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 274.0) internal successors, (7672), 28 states have internal predecessors, (7672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:39,597 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 274.0) internal successors, (7672), 28 states have internal predecessors, (7672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:39,597 INFO L175 Difference]: Start difference. First operand has 140 places, 148 transitions, 1460 flow. Second operand 27 states and 3564 transitions. [2023-08-30 10:09:39,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 577 transitions, 3826 flow [2023-08-30 10:09:39,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 577 transitions, 3721 flow, removed 0 selfloop flow, removed 9 redundant places. [2023-08-30 10:09:39,907 INFO L231 Difference]: Finished difference. Result has 156 places, 151 transitions, 1567 flow [2023-08-30 10:09:39,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=1318, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1567, PETRI_PLACES=156, PETRI_TRANSITIONS=151} [2023-08-30 10:09:39,907 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 99 predicate places. [2023-08-30 10:09:39,907 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 151 transitions, 1567 flow [2023-08-30 10:09:39,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 116.0625) internal successors, (1857), 16 states have internal predecessors, (1857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:39,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:09:39,908 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:09:39,912 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-30 10:09:40,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:09:40,109 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:09:40,109 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:09:40,110 INFO L85 PathProgramCache]: Analyzing trace with hash -132261929, now seen corresponding path program 1 times [2023-08-30 10:09:40,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:09:40,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480906061] [2023-08-30 10:09:40,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:09:40,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:09:40,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:09:40,197 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 10:09:40,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:09:40,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480906061] [2023-08-30 10:09:40,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480906061] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:09:40,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:09:40,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 10:09:40,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882211039] [2023-08-30 10:09:40,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:09:40,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 10:09:40,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:09:40,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 10:09:40,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-08-30 10:09:40,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 274 [2023-08-30 10:09:40,287 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 151 transitions, 1567 flow. Second operand has 8 states, 8 states have (on average 118.375) internal successors, (947), 8 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:40,287 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:09:40,287 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 274 [2023-08-30 10:09:40,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:09:41,518 INFO L130 PetriNetUnfolder]: 7895/13334 cut-off events. [2023-08-30 10:09:41,519 INFO L131 PetriNetUnfolder]: For 36878/36878 co-relation queries the response was YES. [2023-08-30 10:09:41,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48365 conditions, 13334 events. 7895/13334 cut-off events. For 36878/36878 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 91679 event pairs, 1810 based on Foata normal form. 39/12232 useless extension candidates. Maximal degree in co-relation 48326. Up to 8728 conditions per place. [2023-08-30 10:09:41,599 INFO L137 encePairwiseOnDemand]: 263/274 looper letters, 282 selfloop transitions, 43 changer transitions 2/333 dead transitions. [2023-08-30 10:09:41,600 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 333 transitions, 2755 flow [2023-08-30 10:09:41,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 10:09:41,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 10:09:41,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1640 transitions. [2023-08-30 10:09:41,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49878345498783455 [2023-08-30 10:09:41,602 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1640 transitions. [2023-08-30 10:09:41,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1640 transitions. [2023-08-30 10:09:41,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:09:41,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1640 transitions. [2023-08-30 10:09:41,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 136.66666666666666) internal successors, (1640), 12 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:41,608 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 274.0) internal successors, (3562), 13 states have internal predecessors, (3562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:41,608 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 274.0) internal successors, (3562), 13 states have internal predecessors, (3562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:41,608 INFO L175 Difference]: Start difference. First operand has 156 places, 151 transitions, 1567 flow. Second operand 12 states and 1640 transitions. [2023-08-30 10:09:41,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 333 transitions, 2755 flow [2023-08-30 10:09:41,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 333 transitions, 2568 flow, removed 21 selfloop flow, removed 18 redundant places. [2023-08-30 10:09:41,862 INFO L231 Difference]: Finished difference. Result has 150 places, 151 transitions, 1479 flow [2023-08-30 10:09:41,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=1381, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1479, PETRI_PLACES=150, PETRI_TRANSITIONS=151} [2023-08-30 10:09:41,863 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 93 predicate places. [2023-08-30 10:09:41,863 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 151 transitions, 1479 flow [2023-08-30 10:09:41,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 118.375) internal successors, (947), 8 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:41,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:09:41,863 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:09:41,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-30 10:09:41,863 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:09:41,863 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:09:41,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1766817723, now seen corresponding path program 2 times [2023-08-30 10:09:41,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:09:41,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346434502] [2023-08-30 10:09:41,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:09:41,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:09:41,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:09:41,941 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 10:09:41,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:09:41,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346434502] [2023-08-30 10:09:41,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346434502] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:09:41,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876092871] [2023-08-30 10:09:41,942 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 10:09:41,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:09:41,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:09:41,945 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 10:09:41,955 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 10:09:42,030 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 10:09:42,030 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:09:42,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 10:09:42,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:09:42,067 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 10:09:42,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:09:42,131 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 10:09:42,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [876092871] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:09:42,132 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:09:42,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2023-08-30 10:09:42,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654676259] [2023-08-30 10:09:42,132 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:09:42,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 10:09:42,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:09:42,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 10:09:42,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-08-30 10:09:42,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 274 [2023-08-30 10:09:42,220 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 151 transitions, 1479 flow. Second operand has 14 states, 14 states have (on average 118.5) internal successors, (1659), 14 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:42,220 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:09:42,220 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 274 [2023-08-30 10:09:42,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:09:43,817 INFO L130 PetriNetUnfolder]: 7773/13050 cut-off events. [2023-08-30 10:09:43,817 INFO L131 PetriNetUnfolder]: For 31526/31526 co-relation queries the response was YES. [2023-08-30 10:09:43,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46289 conditions, 13050 events. 7773/13050 cut-off events. For 31526/31526 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 89158 event pairs, 452 based on Foata normal form. 78/12008 useless extension candidates. Maximal degree in co-relation 46248. Up to 3228 conditions per place. [2023-08-30 10:09:43,874 INFO L137 encePairwiseOnDemand]: 263/274 looper letters, 349 selfloop transitions, 94 changer transitions 11/460 dead transitions. [2023-08-30 10:09:43,874 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 460 transitions, 3262 flow [2023-08-30 10:09:43,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-30 10:09:43,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-30 10:09:43,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2681 transitions. [2023-08-30 10:09:43,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48923357664233574 [2023-08-30 10:09:43,876 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2681 transitions. [2023-08-30 10:09:43,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2681 transitions. [2023-08-30 10:09:43,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:09:43,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2681 transitions. [2023-08-30 10:09:43,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 134.05) internal successors, (2681), 20 states have internal predecessors, (2681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:43,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 274.0) internal successors, (5754), 21 states have internal predecessors, (5754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:43,885 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 274.0) internal successors, (5754), 21 states have internal predecessors, (5754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:43,885 INFO L175 Difference]: Start difference. First operand has 150 places, 151 transitions, 1479 flow. Second operand 20 states and 2681 transitions. [2023-08-30 10:09:43,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 460 transitions, 3262 flow [2023-08-30 10:09:44,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 460 transitions, 3150 flow, removed 4 selfloop flow, removed 11 redundant places. [2023-08-30 10:09:44,173 INFO L231 Difference]: Finished difference. Result has 155 places, 149 transitions, 1529 flow [2023-08-30 10:09:44,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=1341, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1529, PETRI_PLACES=155, PETRI_TRANSITIONS=149} [2023-08-30 10:09:44,174 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 98 predicate places. [2023-08-30 10:09:44,174 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 149 transitions, 1529 flow [2023-08-30 10:09:44,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 118.5) internal successors, (1659), 14 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:44,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:09:44,175 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:09:44,181 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-30 10:09:44,379 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,SelfDestructingSolverStorable23 [2023-08-30 10:09:44,380 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:09:44,380 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:09:44,380 INFO L85 PathProgramCache]: Analyzing trace with hash -991032345, now seen corresponding path program 1 times [2023-08-30 10:09:44,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:09:44,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958478394] [2023-08-30 10:09:44,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:09:44,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:09:44,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:09:44,431 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 10:09:44,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:09:44,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958478394] [2023-08-30 10:09:44,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958478394] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:09:44,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:09:44,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:09:44,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542699467] [2023-08-30 10:09:44,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:09:44,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:09:44,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:09:44,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:09:44,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:09:44,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 274 [2023-08-30 10:09:44,460 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 149 transitions, 1529 flow. Second operand has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:44,460 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:09:44,461 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 274 [2023-08-30 10:09:44,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:09:45,143 INFO L130 PetriNetUnfolder]: 4452/8302 cut-off events. [2023-08-30 10:09:45,143 INFO L131 PetriNetUnfolder]: For 23254/23254 co-relation queries the response was YES. [2023-08-30 10:09:45,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28664 conditions, 8302 events. 4452/8302 cut-off events. For 23254/23254 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 59024 event pairs, 1485 based on Foata normal form. 442/7564 useless extension candidates. Maximal degree in co-relation 28625. Up to 4773 conditions per place. [2023-08-30 10:09:45,194 INFO L137 encePairwiseOnDemand]: 261/274 looper letters, 212 selfloop transitions, 23 changer transitions 0/240 dead transitions. [2023-08-30 10:09:45,194 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 240 transitions, 2928 flow [2023-08-30 10:09:45,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:09:45,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:09:45,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 437 transitions. [2023-08-30 10:09:45,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5316301703163017 [2023-08-30 10:09:45,195 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 437 transitions. [2023-08-30 10:09:45,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 437 transitions. [2023-08-30 10:09:45,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:09:45,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 437 transitions. [2023-08-30 10:09:45,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:45,196 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 274.0) internal successors, (1096), 4 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:45,197 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 274.0) internal successors, (1096), 4 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:45,197 INFO L175 Difference]: Start difference. First operand has 155 places, 149 transitions, 1529 flow. Second operand 3 states and 437 transitions. [2023-08-30 10:09:45,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 240 transitions, 2928 flow [2023-08-30 10:09:45,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 240 transitions, 2683 flow, removed 6 selfloop flow, removed 17 redundant places. [2023-08-30 10:09:45,285 INFO L231 Difference]: Finished difference. Result has 141 places, 163 transitions, 1548 flow [2023-08-30 10:09:45,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=1361, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1548, PETRI_PLACES=141, PETRI_TRANSITIONS=163} [2023-08-30 10:09:45,286 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 84 predicate places. [2023-08-30 10:09:45,286 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 163 transitions, 1548 flow [2023-08-30 10:09:45,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:45,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:09:45,286 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:09:45,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-30 10:09:45,286 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:09:45,286 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:09:45,286 INFO L85 PathProgramCache]: Analyzing trace with hash 208405136, now seen corresponding path program 1 times [2023-08-30 10:09:45,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:09:45,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302506859] [2023-08-30 10:09:45,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:09:45,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:09:45,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:09:45,373 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:09:45,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:09:45,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302506859] [2023-08-30 10:09:45,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302506859] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:09:45,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205167256] [2023-08-30 10:09:45,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:09:45,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:09:45,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:09:45,376 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 10:09:45,378 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 10:09:45,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:09:45,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 10:09:45,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:09:45,502 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:09:45,502 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:09:45,577 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:09:45,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205167256] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:09:45,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:09:45,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2023-08-30 10:09:45,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842768879] [2023-08-30 10:09:45,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:09:45,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 10:09:45,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:09:45,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 10:09:45,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2023-08-30 10:09:45,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 274 [2023-08-30 10:09:45,694 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 163 transitions, 1548 flow. Second operand has 16 states, 16 states have (on average 116.125) internal successors, (1858), 16 states have internal predecessors, (1858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:45,694 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:09:45,694 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 274 [2023-08-30 10:09:45,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:09:47,071 INFO L130 PetriNetUnfolder]: 4477/8455 cut-off events. [2023-08-30 10:09:47,071 INFO L131 PetriNetUnfolder]: For 24327/24329 co-relation queries the response was YES. [2023-08-30 10:09:47,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31905 conditions, 8455 events. 4477/8455 cut-off events. For 24327/24329 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 60818 event pairs, 448 based on Foata normal form. 94/7368 useless extension candidates. Maximal degree in co-relation 31868. Up to 2324 conditions per place. [2023-08-30 10:09:47,106 INFO L137 encePairwiseOnDemand]: 263/274 looper letters, 422 selfloop transitions, 129 changer transitions 13/570 dead transitions. [2023-08-30 10:09:47,107 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 570 transitions, 4292 flow [2023-08-30 10:09:47,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-08-30 10:09:47,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2023-08-30 10:09:47,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 4292 transitions. [2023-08-30 10:09:47,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46071275225418634 [2023-08-30 10:09:47,111 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 4292 transitions. [2023-08-30 10:09:47,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 4292 transitions. [2023-08-30 10:09:47,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:09:47,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 4292 transitions. [2023-08-30 10:09:47,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 126.23529411764706) internal successors, (4292), 34 states have internal predecessors, (4292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:47,122 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 274.0) internal successors, (9590), 35 states have internal predecessors, (9590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:47,123 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 274.0) internal successors, (9590), 35 states have internal predecessors, (9590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:47,123 INFO L175 Difference]: Start difference. First operand has 141 places, 163 transitions, 1548 flow. Second operand 34 states and 4292 transitions. [2023-08-30 10:09:47,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 570 transitions, 4292 flow [2023-08-30 10:09:47,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 570 transitions, 4094 flow, removed 13 selfloop flow, removed 4 redundant places. [2023-08-30 10:09:47,225 INFO L231 Difference]: Finished difference. Result has 169 places, 180 transitions, 1911 flow [2023-08-30 10:09:47,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=1447, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=1911, PETRI_PLACES=169, PETRI_TRANSITIONS=180} [2023-08-30 10:09:47,226 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 112 predicate places. [2023-08-30 10:09:47,226 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 180 transitions, 1911 flow [2023-08-30 10:09:47,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 116.125) internal successors, (1858), 16 states have internal predecessors, (1858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:47,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:09:47,226 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:09:47,232 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 10:09:47,429 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,SelfDestructingSolverStorable25 [2023-08-30 10:09:47,429 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:09:47,429 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:09:47,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1560044143, now seen corresponding path program 1 times [2023-08-30 10:09:47,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:09:47,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655272130] [2023-08-30 10:09:47,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:09:47,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:09:47,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:09:47,478 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:09:47,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:09:47,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655272130] [2023-08-30 10:09:47,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655272130] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:09:47,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:09:47,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:09:47,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364374124] [2023-08-30 10:09:47,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:09:47,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:09:47,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:09:47,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:09:47,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:09:47,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 274 [2023-08-30 10:09:47,505 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 180 transitions, 1911 flow. Second operand has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:47,505 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:09:47,506 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 274 [2023-08-30 10:09:47,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:09:48,226 INFO L130 PetriNetUnfolder]: 4951/9549 cut-off events. [2023-08-30 10:09:48,226 INFO L131 PetriNetUnfolder]: For 26535/26537 co-relation queries the response was YES. [2023-08-30 10:09:48,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36025 conditions, 9549 events. 4951/9549 cut-off events. For 26535/26537 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 72528 event pairs, 2457 based on Foata normal form. 96/8391 useless extension candidates. Maximal degree in co-relation 35990. Up to 7618 conditions per place. [2023-08-30 10:09:48,275 INFO L137 encePairwiseOnDemand]: 263/274 looper letters, 239 selfloop transitions, 30 changer transitions 0/275 dead transitions. [2023-08-30 10:09:48,275 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 275 transitions, 3320 flow [2023-08-30 10:09:48,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:09:48,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:09:48,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 442 transitions. [2023-08-30 10:09:48,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.537712895377129 [2023-08-30 10:09:48,277 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 442 transitions. [2023-08-30 10:09:48,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 442 transitions. [2023-08-30 10:09:48,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:09:48,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 442 transitions. [2023-08-30 10:09:48,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:48,278 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 274.0) internal successors, (1096), 4 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:48,278 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 274.0) internal successors, (1096), 4 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:48,278 INFO L175 Difference]: Start difference. First operand has 169 places, 180 transitions, 1911 flow. Second operand 3 states and 442 transitions. [2023-08-30 10:09:48,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 275 transitions, 3320 flow [2023-08-30 10:09:48,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 275 transitions, 2836 flow, removed 66 selfloop flow, removed 22 redundant places. [2023-08-30 10:09:48,402 INFO L231 Difference]: Finished difference. Result has 150 places, 205 transitions, 1911 flow [2023-08-30 10:09:48,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=1577, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1911, PETRI_PLACES=150, PETRI_TRANSITIONS=205} [2023-08-30 10:09:48,403 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 93 predicate places. [2023-08-30 10:09:48,403 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 205 transitions, 1911 flow [2023-08-30 10:09:48,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:48,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:09:48,403 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:09:48,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-08-30 10:09:48,403 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:09:48,403 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:09:48,403 INFO L85 PathProgramCache]: Analyzing trace with hash -449235951, now seen corresponding path program 2 times [2023-08-30 10:09:48,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:09:48,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998783877] [2023-08-30 10:09:48,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:09:48,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:09:48,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:09:48,481 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 10:09:48,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:09:48,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998783877] [2023-08-30 10:09:48,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998783877] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:09:48,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:09:48,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 10:09:48,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012113518] [2023-08-30 10:09:48,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:09:48,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 10:09:48,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:09:48,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 10:09:48,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-08-30 10:09:48,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 274 [2023-08-30 10:09:48,554 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 205 transitions, 1911 flow. Second operand has 8 states, 8 states have (on average 118.5) internal successors, (948), 8 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:48,554 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:09:48,554 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 274 [2023-08-30 10:09:48,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:09:49,724 INFO L130 PetriNetUnfolder]: 4948/9584 cut-off events. [2023-08-30 10:09:49,724 INFO L131 PetriNetUnfolder]: For 22392/22392 co-relation queries the response was YES. [2023-08-30 10:09:49,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37087 conditions, 9584 events. 4948/9584 cut-off events. For 22392/22392 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 72584 event pairs, 1383 based on Foata normal form. 52/8472 useless extension candidates. Maximal degree in co-relation 37057. Up to 7279 conditions per place. [2023-08-30 10:09:49,771 INFO L137 encePairwiseOnDemand]: 264/274 looper letters, 294 selfloop transitions, 54 changer transitions 12/366 dead transitions. [2023-08-30 10:09:49,772 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 366 transitions, 3339 flow [2023-08-30 10:09:49,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 10:09:49,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 10:09:49,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1716 transitions. [2023-08-30 10:09:49,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48175182481751827 [2023-08-30 10:09:49,775 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1716 transitions. [2023-08-30 10:09:49,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1716 transitions. [2023-08-30 10:09:49,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:09:49,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1716 transitions. [2023-08-30 10:09:49,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 132.0) internal successors, (1716), 13 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:49,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 274.0) internal successors, (3836), 14 states have internal predecessors, (3836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:49,781 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 274.0) internal successors, (3836), 14 states have internal predecessors, (3836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:49,781 INFO L175 Difference]: Start difference. First operand has 150 places, 205 transitions, 1911 flow. Second operand 13 states and 1716 transitions. [2023-08-30 10:09:49,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 366 transitions, 3339 flow [2023-08-30 10:09:49,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 366 transitions, 3281 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:09:49,864 INFO L231 Difference]: Finished difference. Result has 161 places, 204 transitions, 1979 flow [2023-08-30 10:09:49,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=1871, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1979, PETRI_PLACES=161, PETRI_TRANSITIONS=204} [2023-08-30 10:09:49,864 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 104 predicate places. [2023-08-30 10:09:49,864 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 204 transitions, 1979 flow [2023-08-30 10:09:49,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 118.5) internal successors, (948), 8 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:49,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:09:49,865 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:09:49,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-08-30 10:09:49,865 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:09:49,865 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:09:49,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1241648599, now seen corresponding path program 3 times [2023-08-30 10:09:49,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:09:49,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422735107] [2023-08-30 10:09:49,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:09:49,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:09:49,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:09:49,953 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 10:09:49,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:09:49,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422735107] [2023-08-30 10:09:49,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422735107] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:09:49,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:09:49,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 10:09:49,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456345274] [2023-08-30 10:09:49,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:09:49,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 10:09:49,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:09:49,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 10:09:49,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-08-30 10:09:50,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 274 [2023-08-30 10:09:50,035 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 204 transitions, 1979 flow. Second operand has 8 states, 8 states have (on average 118.5) internal successors, (948), 8 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:50,035 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:09:50,035 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 274 [2023-08-30 10:09:50,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:09:51,179 INFO L130 PetriNetUnfolder]: 5097/9881 cut-off events. [2023-08-30 10:09:51,180 INFO L131 PetriNetUnfolder]: For 23900/23900 co-relation queries the response was YES. [2023-08-30 10:09:51,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38311 conditions, 9881 events. 5097/9881 cut-off events. For 23900/23900 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 75529 event pairs, 1326 based on Foata normal form. 52/8696 useless extension candidates. Maximal degree in co-relation 38280. Up to 7427 conditions per place. [2023-08-30 10:09:51,232 INFO L137 encePairwiseOnDemand]: 264/274 looper letters, 303 selfloop transitions, 66 changer transitions 9/384 dead transitions. [2023-08-30 10:09:51,233 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 384 transitions, 3545 flow [2023-08-30 10:09:51,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-30 10:09:51,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-30 10:09:51,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1961 transitions. [2023-08-30 10:09:51,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47712895377128955 [2023-08-30 10:09:51,235 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1961 transitions. [2023-08-30 10:09:51,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1961 transitions. [2023-08-30 10:09:51,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:09:51,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1961 transitions. [2023-08-30 10:09:51,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 130.73333333333332) internal successors, (1961), 15 states have internal predecessors, (1961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:51,240 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 274.0) internal successors, (4384), 16 states have internal predecessors, (4384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:51,241 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 274.0) internal successors, (4384), 16 states have internal predecessors, (4384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:51,241 INFO L175 Difference]: Start difference. First operand has 161 places, 204 transitions, 1979 flow. Second operand 15 states and 1961 transitions. [2023-08-30 10:09:51,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 384 transitions, 3545 flow [2023-08-30 10:09:51,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 384 transitions, 3467 flow, removed 0 selfloop flow, removed 10 redundant places. [2023-08-30 10:09:51,341 INFO L231 Difference]: Finished difference. Result has 167 places, 209 transitions, 2135 flow [2023-08-30 10:09:51,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=1901, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2135, PETRI_PLACES=167, PETRI_TRANSITIONS=209} [2023-08-30 10:09:51,341 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 110 predicate places. [2023-08-30 10:09:51,341 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 209 transitions, 2135 flow [2023-08-30 10:09:51,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 118.5) internal successors, (948), 8 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:51,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:09:51,342 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:09:51,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-08-30 10:09:51,342 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:09:51,343 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:09:51,343 INFO L85 PathProgramCache]: Analyzing trace with hash -2133507375, now seen corresponding path program 4 times [2023-08-30 10:09:51,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:09:51,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389599967] [2023-08-30 10:09:51,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:09:51,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:09:51,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:09:51,420 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 10:09:51,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:09:51,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389599967] [2023-08-30 10:09:51,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389599967] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:09:51,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:09:51,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 10:09:51,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612639061] [2023-08-30 10:09:51,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:09:51,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 10:09:51,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:09:51,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 10:09:51,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-30 10:09:51,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 274 [2023-08-30 10:09:51,501 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 209 transitions, 2135 flow. Second operand has 8 states, 8 states have (on average 118.5) internal successors, (948), 8 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:51,501 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:09:51,501 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 274 [2023-08-30 10:09:51,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:09:52,502 INFO L130 PetriNetUnfolder]: 5004/9701 cut-off events. [2023-08-30 10:09:52,502 INFO L131 PetriNetUnfolder]: For 24688/24688 co-relation queries the response was YES. [2023-08-30 10:09:52,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38009 conditions, 9701 events. 5004/9701 cut-off events. For 24688/24688 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 73880 event pairs, 1017 based on Foata normal form. 79/8565 useless extension candidates. Maximal degree in co-relation 37976. Up to 4864 conditions per place. [2023-08-30 10:09:52,551 INFO L137 encePairwiseOnDemand]: 264/274 looper letters, 301 selfloop transitions, 109 changer transitions 17/432 dead transitions. [2023-08-30 10:09:52,551 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 432 transitions, 3946 flow [2023-08-30 10:09:52,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-30 10:09:52,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-30 10:09:52,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2221 transitions. [2023-08-30 10:09:52,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4768140832975526 [2023-08-30 10:09:52,554 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2221 transitions. [2023-08-30 10:09:52,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2221 transitions. [2023-08-30 10:09:52,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:09:52,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2221 transitions. [2023-08-30 10:09:52,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 130.64705882352942) internal successors, (2221), 17 states have internal predecessors, (2221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:52,560 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 274.0) internal successors, (4932), 18 states have internal predecessors, (4932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:52,561 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 274.0) internal successors, (4932), 18 states have internal predecessors, (4932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:52,561 INFO L175 Difference]: Start difference. First operand has 167 places, 209 transitions, 2135 flow. Second operand 17 states and 2221 transitions. [2023-08-30 10:09:52,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 432 transitions, 3946 flow [2023-08-30 10:09:52,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 432 transitions, 3808 flow, removed 9 selfloop flow, removed 12 redundant places. [2023-08-30 10:09:52,667 INFO L231 Difference]: Finished difference. Result has 167 places, 206 transitions, 2182 flow [2023-08-30 10:09:52,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=1970, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2182, PETRI_PLACES=167, PETRI_TRANSITIONS=206} [2023-08-30 10:09:52,668 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 110 predicate places. [2023-08-30 10:09:52,668 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 206 transitions, 2182 flow [2023-08-30 10:09:52,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 118.5) internal successors, (948), 8 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:52,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:09:52,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:09:52,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-08-30 10:09:52,669 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:09:52,670 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:09:52,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1189854919, now seen corresponding path program 1 times [2023-08-30 10:09:52,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:09:52,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369420198] [2023-08-30 10:09:52,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:09:52,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:09:52,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:09:52,710 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 10:09:52,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:09:52,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369420198] [2023-08-30 10:09:52,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369420198] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:09:52,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363302222] [2023-08-30 10:09:52,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:09:52,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:09:52,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:09:52,713 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 10:09:52,725 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 10:09:52,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:09:52,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 10:09:52,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:09:52,825 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 10:09:52,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:09:52,842 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 10:09:52,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [363302222] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:09:52,843 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:09:52,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 10:09:52,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657597910] [2023-08-30 10:09:52,843 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:09:52,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:09:52,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:09:52,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:09:52,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:09:52,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 274 [2023-08-30 10:09:52,860 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 206 transitions, 2182 flow. Second operand has 7 states, 7 states have (on average 132.42857142857142) internal successors, (927), 7 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:52,860 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:09:52,861 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 274 [2023-08-30 10:09:52,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:09:53,019 INFO L130 PetriNetUnfolder]: 473/973 cut-off events. [2023-08-30 10:09:53,020 INFO L131 PetriNetUnfolder]: For 3798/3798 co-relation queries the response was YES. [2023-08-30 10:09:53,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4098 conditions, 973 events. 473/973 cut-off events. For 3798/3798 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 5324 event pairs, 21 based on Foata normal form. 156/1128 useless extension candidates. Maximal degree in co-relation 4076. Up to 686 conditions per place. [2023-08-30 10:09:53,023 INFO L137 encePairwiseOnDemand]: 271/274 looper letters, 0 selfloop transitions, 0 changer transitions 143/143 dead transitions. [2023-08-30 10:09:53,023 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 143 transitions, 1493 flow [2023-08-30 10:09:53,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 10:09:53,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 10:09:53,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 697 transitions. [2023-08-30 10:09:53,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5087591240875913 [2023-08-30 10:09:53,025 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 697 transitions. [2023-08-30 10:09:53,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 697 transitions. [2023-08-30 10:09:53,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:09:53,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 697 transitions. [2023-08-30 10:09:53,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 139.4) internal successors, (697), 5 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:53,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 274.0) internal successors, (1644), 6 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:53,027 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 274.0) internal successors, (1644), 6 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:53,027 INFO L175 Difference]: Start difference. First operand has 167 places, 206 transitions, 2182 flow. Second operand 5 states and 697 transitions. [2023-08-30 10:09:53,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 143 transitions, 1493 flow [2023-08-30 10:09:53,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 143 transitions, 1211 flow, removed 6 selfloop flow, removed 25 redundant places. [2023-08-30 10:09:53,033 INFO L231 Difference]: Finished difference. Result has 95 places, 0 transitions, 0 flow [2023-08-30 10:09:53,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=95, PETRI_TRANSITIONS=0} [2023-08-30 10:09:53,033 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 38 predicate places. [2023-08-30 10:09:53,033 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 0 transitions, 0 flow [2023-08-30 10:09:53,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 132.42857142857142) internal successors, (927), 7 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:53,034 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 16 remaining) [2023-08-30 10:09:53,034 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 16 remaining) [2023-08-30 10:09:53,034 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 16 remaining) [2023-08-30 10:09:53,034 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 16 remaining) [2023-08-30 10:09:53,035 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 16 remaining) [2023-08-30 10:09:53,035 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 16 remaining) [2023-08-30 10:09:53,035 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 16 remaining) [2023-08-30 10:09:53,035 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 16 remaining) [2023-08-30 10:09:53,035 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 16 remaining) [2023-08-30 10:09:53,035 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 16 remaining) [2023-08-30 10:09:53,035 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 16 remaining) [2023-08-30 10:09:53,036 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 16 remaining) [2023-08-30 10:09:53,036 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 16 remaining) [2023-08-30 10:09:53,036 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 16 remaining) [2023-08-30 10:09:53,036 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 16 remaining) [2023-08-30 10:09:53,036 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 16 remaining) [2023-08-30 10:09:53,046 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 10:09:53,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:09:53,247 INFO L445 BasicCegarLoop]: Path program histogram: [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:09:53,247 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-30 10:09:53,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 140 places, 156 transitions, 330 flow [2023-08-30 10:09:53,267 INFO L130 PetriNetUnfolder]: 37/264 cut-off events. [2023-08-30 10:09:53,268 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 10:09:53,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 278 conditions, 264 events. 37/264 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 784 event pairs, 0 based on Foata normal form. 0/205 useless extension candidates. Maximal degree in co-relation 156. Up to 9 conditions per place. [2023-08-30 10:09:53,269 INFO L82 GeneralOperation]: Start removeDead. Operand has 140 places, 156 transitions, 330 flow [2023-08-30 10:09:53,270 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 140 places, 156 transitions, 330 flow [2023-08-30 10:09:53,270 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:09:53,270 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 140 places, 156 transitions, 330 flow [2023-08-30 10:09:53,270 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 140 places, 156 transitions, 330 flow [2023-08-30 10:09:53,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 140 places, 156 transitions, 330 flow [2023-08-30 10:09:53,289 INFO L130 PetriNetUnfolder]: 37/264 cut-off events. [2023-08-30 10:09:53,289 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 10:09:53,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 278 conditions, 264 events. 37/264 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 784 event pairs, 0 based on Foata normal form. 0/205 useless extension candidates. Maximal degree in co-relation 156. Up to 9 conditions per place. [2023-08-30 10:09:53,296 INFO L119 LiptonReduction]: Number of co-enabled transitions 10584 [2023-08-30 10:09:55,426 INFO L134 LiptonReduction]: Checked pairs total: 25090 [2023-08-30 10:09:55,427 INFO L136 LiptonReduction]: Total number of compositions: 118 [2023-08-30 10:09:55,428 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-30 10:09:55,428 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;@29153312, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:09:55,428 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-30 10:09:55,434 INFO L130 PetriNetUnfolder]: 15/69 cut-off events. [2023-08-30 10:09:55,434 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 10:09:55,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:09:55,434 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-30 10:09:55,434 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 10:09:55,435 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:09:55,435 INFO L85 PathProgramCache]: Analyzing trace with hash 296671718, now seen corresponding path program 1 times [2023-08-30 10:09:55,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:09:55,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289031998] [2023-08-30 10:09:55,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:09:55,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:09:55,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 10:09:55,446 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 10:09:55,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 10:09:55,457 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 10:09:55,457 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 10:09:55,457 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-30 10:09:55,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-08-30 10:09:55,457 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-30 10:09:55,458 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-30 10:09:55,458 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 10:09:55,458 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-30 10:09:55,474 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 10:09:55,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 173 places, 194 transitions, 418 flow [2023-08-30 10:09:55,508 INFO L130 PetriNetUnfolder]: 58/413 cut-off events. [2023-08-30 10:09:55,508 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 10:09:55,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 441 conditions, 413 events. 58/413 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1385 event pairs, 1 based on Foata normal form. 0/319 useless extension candidates. Maximal degree in co-relation 272. Up to 16 conditions per place. [2023-08-30 10:09:55,512 INFO L82 GeneralOperation]: Start removeDead. Operand has 173 places, 194 transitions, 418 flow [2023-08-30 10:09:55,514 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 173 places, 194 transitions, 418 flow [2023-08-30 10:09:55,514 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:09:55,514 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 173 places, 194 transitions, 418 flow [2023-08-30 10:09:55,515 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 173 places, 194 transitions, 418 flow [2023-08-30 10:09:55,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 173 places, 194 transitions, 418 flow [2023-08-30 10:09:55,546 INFO L130 PetriNetUnfolder]: 58/413 cut-off events. [2023-08-30 10:09:55,546 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 10:09:55,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 441 conditions, 413 events. 58/413 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1385 event pairs, 1 based on Foata normal form. 0/319 useless extension candidates. Maximal degree in co-relation 272. Up to 16 conditions per place. [2023-08-30 10:09:55,562 INFO L119 LiptonReduction]: Number of co-enabled transitions 20088 [2023-08-30 10:09:57,748 INFO L134 LiptonReduction]: Checked pairs total: 50507 [2023-08-30 10:09:57,748 INFO L136 LiptonReduction]: Total number of compositions: 144 [2023-08-30 10:09:57,749 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 10:09:57,749 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;@29153312, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:09:57,750 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-08-30 10:09:57,751 INFO L130 PetriNetUnfolder]: 2/14 cut-off events. [2023-08-30 10:09:57,751 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:09:57,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:09:57,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 10:09:57,752 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:09:57,752 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:09:57,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1295556261, now seen corresponding path program 1 times [2023-08-30 10:09:57,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:09:57,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574072418] [2023-08-30 10:09:57,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:09:57,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:09:57,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:09:57,779 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 10:09:57,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:09:57,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574072418] [2023-08-30 10:09:57,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574072418] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:09:57,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:09:57,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:09:57,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789520077] [2023-08-30 10:09:57,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:09:57,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:09:57,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:09:57,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:09:57,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:09:57,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 338 [2023-08-30 10:09:57,790 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 91 transitions, 212 flow. Second operand has 3 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:57,790 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:09:57,790 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 338 [2023-08-30 10:09:57,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:10:04,698 INFO L130 PetriNetUnfolder]: 102458/145569 cut-off events. [2023-08-30 10:10:04,698 INFO L131 PetriNetUnfolder]: For 2273/2273 co-relation queries the response was YES. [2023-08-30 10:10:04,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 288245 conditions, 145569 events. 102458/145569 cut-off events. For 2273/2273 co-relation queries the response was YES. Maximal size of possible extension queue 4016. Compared 1093097 event pairs, 64766 based on Foata normal form. 15856/113028 useless extension candidates. Maximal degree in co-relation 24799. Up to 141113 conditions per place. [2023-08-30 10:10:05,441 INFO L137 encePairwiseOnDemand]: 313/338 looper letters, 74 selfloop transitions, 2 changer transitions 0/86 dead transitions. [2023-08-30 10:10:05,441 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 86 transitions, 354 flow [2023-08-30 10:10:05,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:10:05,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:10:05,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 582 transitions. [2023-08-30 10:10:05,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5739644970414202 [2023-08-30 10:10:05,443 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 582 transitions. [2023-08-30 10:10:05,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 582 transitions. [2023-08-30 10:10:05,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:10:05,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 582 transitions. [2023-08-30 10:10:05,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 194.0) internal successors, (582), 3 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:05,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:05,445 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:05,445 INFO L175 Difference]: Start difference. First operand has 74 places, 91 transitions, 212 flow. Second operand 3 states and 582 transitions. [2023-08-30 10:10:05,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 86 transitions, 354 flow [2023-08-30 10:10:05,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 86 transitions, 354 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 10:10:05,449 INFO L231 Difference]: Finished difference. Result has 77 places, 72 transitions, 188 flow [2023-08-30 10:10:05,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=188, PETRI_PLACES=77, PETRI_TRANSITIONS=72} [2023-08-30 10:10:05,449 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 3 predicate places. [2023-08-30 10:10:05,450 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 72 transitions, 188 flow [2023-08-30 10:10:05,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:05,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:10:05,450 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:10:05,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-08-30 10:10:05,450 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:10:05,451 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:10:05,451 INFO L85 PathProgramCache]: Analyzing trace with hash -504637675, now seen corresponding path program 1 times [2023-08-30 10:10:05,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:10:05,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789525854] [2023-08-30 10:10:05,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:10:05,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:10:05,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:10:05,473 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 10:10:05,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:10:05,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789525854] [2023-08-30 10:10:05,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789525854] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:10:05,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:10:05,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:10:05,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408423212] [2023-08-30 10:10:05,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:10:05,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:10:05,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:10:05,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:10:05,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:10:05,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 338 [2023-08-30 10:10:05,489 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 72 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:05,489 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:10:05,489 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 338 [2023-08-30 10:10:05,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:10:12,697 INFO L130 PetriNetUnfolder]: 104847/146744 cut-off events. [2023-08-30 10:10:12,698 INFO L131 PetriNetUnfolder]: For 8072/8072 co-relation queries the response was YES. [2023-08-30 10:10:12,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303900 conditions, 146744 events. 104847/146744 cut-off events. For 8072/8072 co-relation queries the response was YES. Maximal size of possible extension queue 4517. Compared 1078004 event pairs, 46783 based on Foata normal form. 0/102572 useless extension candidates. Maximal degree in co-relation 303811. Up to 141912 conditions per place. [2023-08-30 10:10:13,483 INFO L137 encePairwiseOnDemand]: 328/338 looper letters, 86 selfloop transitions, 4 changer transitions 0/99 dead transitions. [2023-08-30 10:10:13,483 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 99 transitions, 445 flow [2023-08-30 10:10:13,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:10:13,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:10:13,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 562 transitions. [2023-08-30 10:10:13,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5542406311637081 [2023-08-30 10:10:13,485 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 562 transitions. [2023-08-30 10:10:13,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 562 transitions. [2023-08-30 10:10:13,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:10:13,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 562 transitions. [2023-08-30 10:10:13,486 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 187.33333333333334) internal successors, (562), 3 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:13,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:13,486 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:13,487 INFO L175 Difference]: Start difference. First operand has 77 places, 72 transitions, 188 flow. Second operand 3 states and 562 transitions. [2023-08-30 10:10:13,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 99 transitions, 445 flow [2023-08-30 10:10:13,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 99 transitions, 442 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:10:13,494 INFO L231 Difference]: Finished difference. Result has 79 places, 75 transitions, 222 flow [2023-08-30 10:10:13,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=222, PETRI_PLACES=79, PETRI_TRANSITIONS=75} [2023-08-30 10:10:13,495 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 5 predicate places. [2023-08-30 10:10:13,495 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 75 transitions, 222 flow [2023-08-30 10:10:13,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:13,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:10:13,496 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 10:10:13,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-08-30 10:10:13,496 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:10:13,496 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:10:13,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1318302492, now seen corresponding path program 1 times [2023-08-30 10:10:13,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:10:13,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964903059] [2023-08-30 10:10:13,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:10:13,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:10:13,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:10:13,517 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:10:13,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:10:13,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964903059] [2023-08-30 10:10:13,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964903059] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:10:13,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:10:13,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:10:13,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219192936] [2023-08-30 10:10:13,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:10:13,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:10:13,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:10:13,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:10:13,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:10:13,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 338 [2023-08-30 10:10:13,527 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 75 transitions, 222 flow. Second operand has 3 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:13,527 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:10:13,527 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 338 [2023-08-30 10:10:13,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:10:20,457 INFO L130 PetriNetUnfolder]: 95696/135020 cut-off events. [2023-08-30 10:10:20,457 INFO L131 PetriNetUnfolder]: For 17249/18543 co-relation queries the response was YES. [2023-08-30 10:10:20,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 295772 conditions, 135020 events. 95696/135020 cut-off events. For 17249/18543 co-relation queries the response was YES. Maximal size of possible extension queue 4015. Compared 997516 event pairs, 89180 based on Foata normal form. 0/100783 useless extension candidates. Maximal degree in co-relation 135695. Up to 131976 conditions per place. [2023-08-30 10:10:21,110 INFO L137 encePairwiseOnDemand]: 336/338 looper letters, 62 selfloop transitions, 1 changer transitions 0/74 dead transitions. [2023-08-30 10:10:21,110 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 74 transitions, 344 flow [2023-08-30 10:10:21,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:10:21,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:10:21,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 538 transitions. [2023-08-30 10:10:21,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5305719921104537 [2023-08-30 10:10:21,111 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 538 transitions. [2023-08-30 10:10:21,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 538 transitions. [2023-08-30 10:10:21,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:10:21,111 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 538 transitions. [2023-08-30 10:10:21,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 179.33333333333334) internal successors, (538), 3 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:21,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:21,112 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:21,113 INFO L175 Difference]: Start difference. First operand has 79 places, 75 transitions, 222 flow. Second operand 3 states and 538 transitions. [2023-08-30 10:10:21,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 74 transitions, 344 flow [2023-08-30 10:10:21,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 74 transitions, 340 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:10:21,120 INFO L231 Difference]: Finished difference. Result has 79 places, 74 transitions, 216 flow [2023-08-30 10:10:21,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=216, PETRI_PLACES=79, PETRI_TRANSITIONS=74} [2023-08-30 10:10:21,121 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 5 predicate places. [2023-08-30 10:10:21,121 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 74 transitions, 216 flow [2023-08-30 10:10:21,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:21,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:10:21,121 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 10:10:21,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-08-30 10:10:21,121 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:10:21,122 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:10:21,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1318302491, now seen corresponding path program 1 times [2023-08-30 10:10:21,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:10:21,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481860352] [2023-08-30 10:10:21,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:10:21,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:10:21,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:10:21,141 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 10:10:21,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:10:21,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481860352] [2023-08-30 10:10:21,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481860352] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:10:21,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:10:21,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:10:21,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217961782] [2023-08-30 10:10:21,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:10:21,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:10:21,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:10:21,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:10:21,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:10:21,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 338 [2023-08-30 10:10:21,151 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 74 transitions, 216 flow. Second operand has 3 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:21,151 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:10:21,152 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 338 [2023-08-30 10:10:21,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:10:27,555 INFO L130 PetriNetUnfolder]: 88623/123848 cut-off events. [2023-08-30 10:10:27,555 INFO L131 PetriNetUnfolder]: For 16769/16964 co-relation queries the response was YES. [2023-08-30 10:10:27,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 270686 conditions, 123848 events. 88623/123848 cut-off events. For 16769/16964 co-relation queries the response was YES. Maximal size of possible extension queue 3766. Compared 890702 event pairs, 31311 based on Foata normal form. 0/95540 useless extension candidates. Maximal degree in co-relation 270673. Up to 104456 conditions per place. [2023-08-30 10:10:28,140 INFO L137 encePairwiseOnDemand]: 334/338 looper letters, 99 selfloop transitions, 4 changer transitions 0/114 dead transitions. [2023-08-30 10:10:28,140 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 114 transitions, 520 flow [2023-08-30 10:10:28,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:10:28,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:10:28,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 573 transitions. [2023-08-30 10:10:28,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5650887573964497 [2023-08-30 10:10:28,142 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 573 transitions. [2023-08-30 10:10:28,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 573 transitions. [2023-08-30 10:10:28,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:10:28,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 573 transitions. [2023-08-30 10:10:28,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 191.0) internal successors, (573), 3 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:28,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:28,144 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:28,144 INFO L175 Difference]: Start difference. First operand has 79 places, 74 transitions, 216 flow. Second operand 3 states and 573 transitions. [2023-08-30 10:10:28,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 114 transitions, 520 flow [2023-08-30 10:10:28,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 114 transitions, 519 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:10:28,153 INFO L231 Difference]: Finished difference. Result has 80 places, 74 transitions, 227 flow [2023-08-30 10:10:28,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=227, PETRI_PLACES=80, PETRI_TRANSITIONS=74} [2023-08-30 10:10:28,154 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 6 predicate places. [2023-08-30 10:10:28,154 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 74 transitions, 227 flow [2023-08-30 10:10:28,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:28,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:10:28,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:10:28,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-08-30 10:10:28,155 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:10:28,155 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:10:28,155 INFO L85 PathProgramCache]: Analyzing trace with hash -788508054, now seen corresponding path program 1 times [2023-08-30 10:10:28,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:10:28,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192582338] [2023-08-30 10:10:28,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:10:28,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:10:28,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:10:28,384 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 10:10:28,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:10:28,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192582338] [2023-08-30 10:10:28,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192582338] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:10:28,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:10:28,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:10:28,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123604055] [2023-08-30 10:10:28,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:10:28,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 10:10:28,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:10:28,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 10:10:28,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:10:28,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 338 [2023-08-30 10:10:28,435 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 74 transitions, 227 flow. Second operand has 5 states, 5 states have (on average 153.8) internal successors, (769), 5 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:28,435 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:10:28,436 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 338 [2023-08-30 10:10:28,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:10:37,345 INFO L130 PetriNetUnfolder]: 120303/172596 cut-off events. [2023-08-30 10:10:37,345 INFO L131 PetriNetUnfolder]: For 49195/49711 co-relation queries the response was YES. [2023-08-30 10:10:37,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 386422 conditions, 172596 events. 120303/172596 cut-off events. For 49195/49711 co-relation queries the response was YES. Maximal size of possible extension queue 5289. Compared 1332874 event pairs, 26465 based on Foata normal form. 90/138658 useless extension candidates. Maximal degree in co-relation 386407. Up to 102680 conditions per place. [2023-08-30 10:10:38,255 INFO L137 encePairwiseOnDemand]: 318/338 looper letters, 216 selfloop transitions, 29 changer transitions 0/254 dead transitions. [2023-08-30 10:10:38,255 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 254 transitions, 1253 flow [2023-08-30 10:10:38,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 10:10:38,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 10:10:38,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1314 transitions. [2023-08-30 10:10:38,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.555367709213863 [2023-08-30 10:10:38,257 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1314 transitions. [2023-08-30 10:10:38,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1314 transitions. [2023-08-30 10:10:38,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:10:38,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1314 transitions. [2023-08-30 10:10:38,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 187.71428571428572) internal successors, (1314), 7 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:38,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 338.0) internal successors, (2704), 8 states have internal predecessors, (2704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:38,261 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 338.0) internal successors, (2704), 8 states have internal predecessors, (2704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:38,261 INFO L175 Difference]: Start difference. First operand has 80 places, 74 transitions, 227 flow. Second operand 7 states and 1314 transitions. [2023-08-30 10:10:38,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 254 transitions, 1253 flow [2023-08-30 10:10:38,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 254 transitions, 1236 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:10:38,277 INFO L231 Difference]: Finished difference. Result has 90 places, 99 transitions, 475 flow [2023-08-30 10:10:38,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=475, PETRI_PLACES=90, PETRI_TRANSITIONS=99} [2023-08-30 10:10:38,277 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 16 predicate places. [2023-08-30 10:10:38,277 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 99 transitions, 475 flow [2023-08-30 10:10:38,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 153.8) internal successors, (769), 5 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:38,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:10:38,278 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:10:38,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-08-30 10:10:38,278 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:10:38,278 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:10:38,278 INFO L85 PathProgramCache]: Analyzing trace with hash -788508053, now seen corresponding path program 1 times [2023-08-30 10:10:38,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:10:38,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714908597] [2023-08-30 10:10:38,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:10:38,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:10:38,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:10:38,312 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 10:10:38,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:10:38,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714908597] [2023-08-30 10:10:38,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714908597] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:10:38,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:10:38,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:10:38,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650842655] [2023-08-30 10:10:38,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:10:38,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 10:10:38,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:10:38,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 10:10:38,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:10:38,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 338 [2023-08-30 10:10:38,350 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 99 transitions, 475 flow. Second operand has 5 states, 5 states have (on average 153.8) internal successors, (769), 5 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:38,350 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:10:38,350 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 338 [2023-08-30 10:10:38,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:10:49,719 INFO L130 PetriNetUnfolder]: 125703/184784 cut-off events. [2023-08-30 10:10:49,719 INFO L131 PetriNetUnfolder]: For 161781/163450 co-relation queries the response was YES. [2023-08-30 10:10:50,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 499815 conditions, 184784 events. 125703/184784 cut-off events. For 161781/163450 co-relation queries the response was YES. Maximal size of possible extension queue 5792. Compared 1508093 event pairs, 24414 based on Foata normal form. 7181/179897 useless extension candidates. Maximal degree in co-relation 499794. Up to 118200 conditions per place. [2023-08-30 10:10:51,151 INFO L137 encePairwiseOnDemand]: 318/338 looper letters, 236 selfloop transitions, 35 changer transitions 0/280 dead transitions. [2023-08-30 10:10:51,151 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 280 transitions, 1686 flow [2023-08-30 10:10:51,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 10:10:51,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 10:10:51,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1314 transitions. [2023-08-30 10:10:51,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.555367709213863 [2023-08-30 10:10:51,153 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1314 transitions. [2023-08-30 10:10:51,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1314 transitions. [2023-08-30 10:10:51,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:10:51,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1314 transitions. [2023-08-30 10:10:51,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 187.71428571428572) internal successors, (1314), 7 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:51,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 338.0) internal successors, (2704), 8 states have internal predecessors, (2704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:51,156 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 338.0) internal successors, (2704), 8 states have internal predecessors, (2704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:51,156 INFO L175 Difference]: Start difference. First operand has 90 places, 99 transitions, 475 flow. Second operand 7 states and 1314 transitions. [2023-08-30 10:10:51,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 280 transitions, 1686 flow [2023-08-30 10:10:51,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 280 transitions, 1680 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:10:51,526 INFO L231 Difference]: Finished difference. Result has 99 places, 125 transitions, 855 flow [2023-08-30 10:10:51,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=469, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=855, PETRI_PLACES=99, PETRI_TRANSITIONS=125} [2023-08-30 10:10:51,527 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 25 predicate places. [2023-08-30 10:10:51,527 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 125 transitions, 855 flow [2023-08-30 10:10:51,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 153.8) internal successors, (769), 5 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:51,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:10:51,527 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:10:51,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-08-30 10:10:51,528 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:10:51,528 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:10:51,528 INFO L85 PathProgramCache]: Analyzing trace with hash 321582911, now seen corresponding path program 1 times [2023-08-30 10:10:51,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:10:51,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259215063] [2023-08-30 10:10:51,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:10:51,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:10:51,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:10:51,574 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 10:10:51,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:10:51,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259215063] [2023-08-30 10:10:51,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259215063] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:10:51,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:10:51,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:10:51,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924361048] [2023-08-30 10:10:51,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:10:51,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 10:10:51,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:10:51,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 10:10:51,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:10:51,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 338 [2023-08-30 10:10:51,620 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 125 transitions, 855 flow. Second operand has 5 states, 5 states have (on average 154.2) internal successors, (771), 5 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:51,620 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:10:51,620 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 338 [2023-08-30 10:10:51,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:11:07,412 INFO L130 PetriNetUnfolder]: 152046/221273 cut-off events. [2023-08-30 10:11:07,413 INFO L131 PetriNetUnfolder]: For 448405/449337 co-relation queries the response was YES. [2023-08-30 10:11:08,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 693723 conditions, 221273 events. 152046/221273 cut-off events. For 448405/449337 co-relation queries the response was YES. Maximal size of possible extension queue 6868. Compared 1802612 event pairs, 33083 based on Foata normal form. 4434/211762 useless extension candidates. Maximal degree in co-relation 693697. Up to 140584 conditions per place. [2023-08-30 10:11:09,056 INFO L137 encePairwiseOnDemand]: 318/338 looper letters, 268 selfloop transitions, 58 changer transitions 0/335 dead transitions. [2023-08-30 10:11:09,056 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 335 transitions, 2555 flow [2023-08-30 10:11:09,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 10:11:09,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 10:11:09,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1313 transitions. [2023-08-30 10:11:09,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.554945054945055 [2023-08-30 10:11:09,058 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1313 transitions. [2023-08-30 10:11:09,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1313 transitions. [2023-08-30 10:11:09,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:11:09,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1313 transitions. [2023-08-30 10:11:09,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 187.57142857142858) internal successors, (1313), 7 states have internal predecessors, (1313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:11:09,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 338.0) internal successors, (2704), 8 states have internal predecessors, (2704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:11:09,061 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 338.0) internal successors, (2704), 8 states have internal predecessors, (2704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:11:09,061 INFO L175 Difference]: Start difference. First operand has 99 places, 125 transitions, 855 flow. Second operand 7 states and 1313 transitions. [2023-08-30 10:11:09,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 335 transitions, 2555 flow [2023-08-30 10:11:09,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 335 transitions, 2542 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:11:09,892 INFO L231 Difference]: Finished difference. Result has 108 places, 165 transitions, 1518 flow [2023-08-30 10:11:09,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=835, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1518, PETRI_PLACES=108, PETRI_TRANSITIONS=165} [2023-08-30 10:11:09,893 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 34 predicate places. [2023-08-30 10:11:09,893 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 165 transitions, 1518 flow [2023-08-30 10:11:09,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 154.2) internal successors, (771), 5 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:11:09,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:11:09,893 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:11:09,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-08-30 10:11:09,894 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:11:09,894 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:11:09,894 INFO L85 PathProgramCache]: Analyzing trace with hash 321582910, now seen corresponding path program 1 times [2023-08-30 10:11:09,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:11:09,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653457761] [2023-08-30 10:11:09,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:11:09,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:11:09,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:11:09,935 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 10:11:09,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:11:09,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653457761] [2023-08-30 10:11:09,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653457761] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:11:09,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:11:09,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:11:09,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017967966] [2023-08-30 10:11:09,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:11:09,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 10:11:09,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:11:09,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 10:11:09,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:11:09,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 338 [2023-08-30 10:11:09,964 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 165 transitions, 1518 flow. Second operand has 5 states, 5 states have (on average 154.2) internal successors, (771), 5 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:11:09,964 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:11:09,964 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 338 [2023-08-30 10:11:09,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:11:28,656 INFO L130 PetriNetUnfolder]: 143534/210135 cut-off events. [2023-08-30 10:11:28,657 INFO L131 PetriNetUnfolder]: For 739338/740377 co-relation queries the response was YES. [2023-08-30 10:11:29,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 747226 conditions, 210135 events. 143534/210135 cut-off events. For 739338/740377 co-relation queries the response was YES. Maximal size of possible extension queue 6592. Compared 1722070 event pairs, 33099 based on Foata normal form. 4515/201158 useless extension candidates. Maximal degree in co-relation 747194. Up to 135921 conditions per place. [2023-08-30 10:11:30,522 INFO L137 encePairwiseOnDemand]: 318/338 looper letters, 254 selfloop transitions, 59 changer transitions 0/322 dead transitions. [2023-08-30 10:11:30,523 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 322 transitions, 2732 flow [2023-08-30 10:11:30,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 10:11:30,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 10:11:30,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1313 transitions. [2023-08-30 10:11:30,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.554945054945055 [2023-08-30 10:11:30,524 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1313 transitions. [2023-08-30 10:11:30,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1313 transitions. [2023-08-30 10:11:30,524 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:11:30,524 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1313 transitions. [2023-08-30 10:11:30,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 187.57142857142858) internal successors, (1313), 7 states have internal predecessors, (1313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:11:30,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 338.0) internal successors, (2704), 8 states have internal predecessors, (2704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:11:30,527 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 338.0) internal successors, (2704), 8 states have internal predecessors, (2704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:11:30,527 INFO L175 Difference]: Start difference. First operand has 108 places, 165 transitions, 1518 flow. Second operand 7 states and 1313 transitions. [2023-08-30 10:11:30,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 322 transitions, 2732 flow [2023-08-30 10:11:36,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 322 transitions, 2690 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-08-30 10:11:36,559 INFO L231 Difference]: Finished difference. Result has 113 places, 168 transitions, 1620 flow [2023-08-30 10:11:36,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=1369, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1620, PETRI_PLACES=113, PETRI_TRANSITIONS=168} [2023-08-30 10:11:36,560 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 39 predicate places. [2023-08-30 10:11:36,561 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 168 transitions, 1620 flow [2023-08-30 10:11:36,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 154.2) internal successors, (771), 5 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:11:36,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:11:36,562 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:11:36,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-08-30 10:11:36,562 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:11:36,562 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:11:36,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1612193221, now seen corresponding path program 1 times [2023-08-30 10:11:36,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:11:36,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143073205] [2023-08-30 10:11:36,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:11:36,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:11:36,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:11:36,617 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 10:11:36,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:11:36,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143073205] [2023-08-30 10:11:36,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143073205] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:11:36,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:11:36,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:11:36,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718653119] [2023-08-30 10:11:36,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:11:36,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 10:11:36,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:11:36,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 10:11:36,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:11:36,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 338 [2023-08-30 10:11:36,654 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 168 transitions, 1620 flow. Second operand has 5 states, 5 states have (on average 154.4) internal successors, (772), 5 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:11:36,655 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:11:36,655 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 338 [2023-08-30 10:11:36,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:11:56,759 INFO L130 PetriNetUnfolder]: 170769/247690 cut-off events. [2023-08-30 10:11:56,759 INFO L131 PetriNetUnfolder]: For 1016885/1017495 co-relation queries the response was YES. [2023-08-30 10:11:58,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 902046 conditions, 247690 events. 170769/247690 cut-off events. For 1016885/1017495 co-relation queries the response was YES. Maximal size of possible extension queue 7640. Compared 2020913 event pairs, 39710 based on Foata normal form. 4533/236613 useless extension candidates. Maximal degree in co-relation 902013. Up to 160648 conditions per place. [2023-08-30 10:11:59,050 INFO L137 encePairwiseOnDemand]: 318/338 looper letters, 316 selfloop transitions, 79 changer transitions 0/404 dead transitions. [2023-08-30 10:11:59,050 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 404 transitions, 4074 flow [2023-08-30 10:11:59,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 10:11:59,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 10:11:59,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1311 transitions. [2023-08-30 10:11:59,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5540997464074388 [2023-08-30 10:11:59,051 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1311 transitions. [2023-08-30 10:11:59,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1311 transitions. [2023-08-30 10:11:59,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:11:59,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1311 transitions. [2023-08-30 10:11:59,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 187.28571428571428) internal successors, (1311), 7 states have internal predecessors, (1311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:11:59,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 338.0) internal successors, (2704), 8 states have internal predecessors, (2704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:11:59,055 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 338.0) internal successors, (2704), 8 states have internal predecessors, (2704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:11:59,055 INFO L175 Difference]: Start difference. First operand has 113 places, 168 transitions, 1620 flow. Second operand 7 states and 1311 transitions. [2023-08-30 10:11:59,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 404 transitions, 4074 flow [2023-08-30 10:12:04,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 404 transitions, 4051 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-08-30 10:12:04,055 INFO L231 Difference]: Finished difference. Result has 122 places, 218 transitions, 2706 flow [2023-08-30 10:12:04,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=1582, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2706, PETRI_PLACES=122, PETRI_TRANSITIONS=218} [2023-08-30 10:12:04,056 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 48 predicate places. [2023-08-30 10:12:04,056 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 218 transitions, 2706 flow [2023-08-30 10:12:04,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 154.4) internal successors, (772), 5 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:04,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:12:04,057 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:12:04,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-08-30 10:12:04,057 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:12:04,057 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:12:04,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1612193312, now seen corresponding path program 1 times [2023-08-30 10:12:04,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:12:04,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984549874] [2023-08-30 10:12:04,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:12:04,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:12:04,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:12:04,097 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 10:12:04,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:12:04,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984549874] [2023-08-30 10:12:04,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984549874] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:12:04,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:12:04,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:12:04,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777696189] [2023-08-30 10:12:04,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:12:04,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 10:12:04,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:12:04,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 10:12:04,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:12:04,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 338 [2023-08-30 10:12:04,138 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 218 transitions, 2706 flow. Second operand has 5 states, 5 states have (on average 154.4) internal successors, (772), 5 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:04,138 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:12:04,138 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 338 [2023-08-30 10:12:04,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:12:26,639 INFO L130 PetriNetUnfolder]: 159771/232744 cut-off events. [2023-08-30 10:12:26,639 INFO L131 PetriNetUnfolder]: For 1422285/1423311 co-relation queries the response was YES. [2023-08-30 10:12:27,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 921855 conditions, 232744 events. 159771/232744 cut-off events. For 1422285/1423311 co-relation queries the response was YES. Maximal size of possible extension queue 7281. Compared 1904165 event pairs, 39352 based on Foata normal form. 4659/222461 useless extension candidates. Maximal degree in co-relation 921816. Up to 153532 conditions per place. [2023-08-30 10:12:29,094 INFO L137 encePairwiseOnDemand]: 318/338 looper letters, 296 selfloop transitions, 79 changer transitions 0/384 dead transitions. [2023-08-30 10:12:29,095 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 384 transitions, 4136 flow [2023-08-30 10:12:29,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 10:12:29,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 10:12:29,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1311 transitions. [2023-08-30 10:12:29,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5540997464074388 [2023-08-30 10:12:29,096 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1311 transitions. [2023-08-30 10:12:29,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1311 transitions. [2023-08-30 10:12:29,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:12:29,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1311 transitions. [2023-08-30 10:12:29,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 187.28571428571428) internal successors, (1311), 7 states have internal predecessors, (1311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:29,099 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 338.0) internal successors, (2704), 8 states have internal predecessors, (2704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:29,099 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 338.0) internal successors, (2704), 8 states have internal predecessors, (2704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:29,099 INFO L175 Difference]: Start difference. First operand has 122 places, 218 transitions, 2706 flow. Second operand 7 states and 1311 transitions. [2023-08-30 10:12:29,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 384 transitions, 4136 flow [2023-08-30 10:12:39,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 384 transitions, 4068 flow, removed 12 selfloop flow, removed 1 redundant places. [2023-08-30 10:12:39,050 INFO L231 Difference]: Finished difference. Result has 127 places, 218 transitions, 2720 flow [2023-08-30 10:12:39,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=2383, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2720, PETRI_PLACES=127, PETRI_TRANSITIONS=218} [2023-08-30 10:12:39,050 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 53 predicate places. [2023-08-30 10:12:39,050 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 218 transitions, 2720 flow [2023-08-30 10:12:39,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 154.4) internal successors, (772), 5 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:39,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:12:39,051 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:12:39,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-08-30 10:12:39,051 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:12:39,051 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:12:39,051 INFO L85 PathProgramCache]: Analyzing trace with hash -2140450789, now seen corresponding path program 1 times [2023-08-30 10:12:39,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:12:39,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874991931] [2023-08-30 10:12:39,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:12:39,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:12:39,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:12:39,105 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 10:12:39,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:12:39,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874991931] [2023-08-30 10:12:39,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874991931] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:12:39,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867175021] [2023-08-30 10:12:39,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:12:39,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:12:39,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:12:39,112 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 10:12:39,136 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 10:12:39,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:12:39,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 10:12:39,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:12:39,249 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 10:12:39,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:12:39,301 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 10:12:39,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867175021] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:12:39,302 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:12:39,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 10 [2023-08-30 10:12:39,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80485356] [2023-08-30 10:12:39,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:12:39,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 10:12:39,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:12:39,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 10:12:39,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-08-30 10:12:39,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 338 [2023-08-30 10:12:39,386 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 218 transitions, 2720 flow. Second operand has 12 states, 12 states have (on average 149.41666666666666) internal successors, (1793), 12 states have internal predecessors, (1793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:12:39,386 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:12:39,387 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 338 [2023-08-30 10:12:39,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:13:17,852 INFO L130 PetriNetUnfolder]: 231769/336853 cut-off events. [2023-08-30 10:13:17,853 INFO L131 PetriNetUnfolder]: For 2184468/2185889 co-relation queries the response was YES. [2023-08-30 10:13:19,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1379475 conditions, 336853 events. 231769/336853 cut-off events. For 2184468/2185889 co-relation queries the response was YES. Maximal size of possible extension queue 10087. Compared 2840467 event pairs, 14063 based on Foata normal form. 6404/321407 useless extension candidates. Maximal degree in co-relation 1379435. Up to 95224 conditions per place. [2023-08-30 10:13:21,329 INFO L137 encePairwiseOnDemand]: 315/338 looper letters, 973 selfloop transitions, 382 changer transitions 0/1364 dead transitions. [2023-08-30 10:13:21,329 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 1364 transitions, 14146 flow [2023-08-30 10:13:21,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-08-30 10:13:21,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-08-30 10:13:21,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4901 transitions. [2023-08-30 10:13:21,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5370370370370371 [2023-08-30 10:13:21,334 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 4901 transitions. [2023-08-30 10:13:21,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 4901 transitions. [2023-08-30 10:13:21,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:13:21,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 4901 transitions. [2023-08-30 10:13:21,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 181.5185185185185) internal successors, (4901), 27 states have internal predecessors, (4901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:13:21,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 338.0) internal successors, (9464), 28 states have internal predecessors, (9464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:13:21,345 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 338.0) internal successors, (9464), 28 states have internal predecessors, (9464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:13:21,345 INFO L175 Difference]: Start difference. First operand has 127 places, 218 transitions, 2720 flow. Second operand 27 states and 4901 transitions. [2023-08-30 10:13:21,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 1364 transitions, 14146 flow [2023-08-30 10:14:13,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 1364 transitions, 14057 flow, removed 36 selfloop flow, removed 2 redundant places. [2023-08-30 10:14:13,206 INFO L231 Difference]: Finished difference. Result has 166 places, 533 transitions, 9138 flow [2023-08-30 10:14:13,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=2631, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=9138, PETRI_PLACES=166, PETRI_TRANSITIONS=533} [2023-08-30 10:14:13,207 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 92 predicate places. [2023-08-30 10:14:13,207 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 533 transitions, 9138 flow [2023-08-30 10:14:13,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 149.41666666666666) internal successors, (1793), 12 states have internal predecessors, (1793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:14:13,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:14:13,208 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:14:13,213 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-08-30 10:14:13,408 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,SelfDestructingSolverStorable42 [2023-08-30 10:14:13,409 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:14:13,409 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:14:13,409 INFO L85 PathProgramCache]: Analyzing trace with hash -500944981, now seen corresponding path program 1 times [2023-08-30 10:14:13,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:14:13,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584255293] [2023-08-30 10:14:13,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:14:13,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:14:13,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:14:13,462 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 10:14:13,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:14:13,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584255293] [2023-08-30 10:14:13,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584255293] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:14:13,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:14:13,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 10:14:13,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145362587] [2023-08-30 10:14:13,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:14:13,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:14:13,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:14:13,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:14:13,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:14:13,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 338 [2023-08-30 10:14:13,521 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 533 transitions, 9138 flow. Second operand has 7 states, 7 states have (on average 150.14285714285714) internal successors, (1051), 7 states have internal predecessors, (1051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:14:13,521 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:14:13,521 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 338 [2023-08-30 10:14:13,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:15:06,646 INFO L130 PetriNetUnfolder]: 245483/357527 cut-off events. [2023-08-30 10:15:06,647 INFO L131 PetriNetUnfolder]: For 3550087/3551023 co-relation queries the response was YES. [2023-08-30 10:15:09,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1726033 conditions, 357527 events. 245483/357527 cut-off events. For 3550087/3551023 co-relation queries the response was YES. Maximal size of possible extension queue 10686. Compared 3039238 event pairs, 43054 based on Foata normal form. 2982/337460 useless extension candidates. Maximal degree in co-relation 1725977. Up to 216224 conditions per place. [2023-08-30 10:15:11,507 INFO L137 encePairwiseOnDemand]: 318/338 looper letters, 734 selfloop transitions, 295 changer transitions 0/1038 dead transitions. [2023-08-30 10:15:11,507 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 1038 transitions, 15096 flow [2023-08-30 10:15:11,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-30 10:15:11,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-30 10:15:11,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2709 transitions. [2023-08-30 10:15:11,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5343195266272189 [2023-08-30 10:15:11,510 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2709 transitions. [2023-08-30 10:15:11,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2709 transitions. [2023-08-30 10:15:11,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:15:11,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2709 transitions. [2023-08-30 10:15:11,513 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 180.6) internal successors, (2709), 15 states have internal predecessors, (2709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:11,517 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 338.0) internal successors, (5408), 16 states have internal predecessors, (5408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:11,517 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 338.0) internal successors, (5408), 16 states have internal predecessors, (5408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:11,517 INFO L175 Difference]: Start difference. First operand has 166 places, 533 transitions, 9138 flow. Second operand 15 states and 2709 transitions. [2023-08-30 10:15:11,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 1038 transitions, 15096 flow Killed by 15