./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_24-sound_lock_racing.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_24-sound_lock_racing.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 1eea0d699fc30cae440905f5eeea19b8e9e5d0b5cc249e9ffded8d356549b279 --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 10:06:03,160 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 10:06:03,162 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 10:06:03,200 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 10:06:03,201 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 10:06:03,209 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 10:06:03,210 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 10:06:03,213 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 10:06:03,215 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 10:06:03,219 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 10:06:03,220 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 10:06:03,222 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 10:06:03,222 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 10:06:03,224 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 10:06:03,225 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 10:06:03,228 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 10:06:03,231 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 10:06:03,232 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 10:06:03,234 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 10:06:03,236 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 10:06:03,238 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 10:06:03,240 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 10:06:03,241 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 10:06:03,242 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 10:06:03,246 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 10:06:03,249 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 10:06:03,250 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 10:06:03,250 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 10:06:03,252 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 10:06:03,253 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 10:06:03,253 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 10:06:03,253 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 10:06:03,255 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 10:06:03,255 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 10:06:03,257 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 10:06:03,257 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 10:06:03,257 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 10:06:03,258 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 10:06:03,258 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 10:06:03,258 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 10:06:03,259 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 10:06:03,261 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 10:06:03,296 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 10:06:03,296 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 10:06:03,297 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 10:06:03,298 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 10:06:03,299 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 10:06:03,299 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 10:06:03,299 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 10:06:03,299 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 10:06:03,300 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 10:06:03,300 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 10:06:03,301 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 10:06:03,301 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 10:06:03,301 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 10:06:03,301 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 10:06:03,301 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 10:06:03,301 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 10:06:03,302 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 10:06:03,302 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 10:06:03,302 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 10:06:03,302 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 10:06:03,302 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 10:06:03,302 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 10:06:03,303 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 10:06:03,303 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 10:06:03,303 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 10:06:03,303 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 10:06:03,303 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 10:06:03,304 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 10:06:03,304 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 10:06:03,304 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 10:06:03,304 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 10:06:03,304 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 10:06:03,305 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 10:06:03,305 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 10:06:03,305 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 10:06:03,305 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 10:06:03,305 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 10:06:03,305 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1eea0d699fc30cae440905f5eeea19b8e9e5d0b5cc249e9ffded8d356549b279 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 10:06:03,614 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 10:06:03,637 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 10:06:03,640 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 10:06:03,641 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 10:06:03,641 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 10:06:03,642 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_24-sound_lock_racing.i [2023-08-30 10:06:04,909 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 10:06:05,127 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 10:06:05,127 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_24-sound_lock_racing.i [2023-08-30 10:06:05,138 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d041dc94/4a154e0a27954c05901366cd4bc4428f/FLAG61bb96491 [2023-08-30 10:06:05,160 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d041dc94/4a154e0a27954c05901366cd4bc4428f [2023-08-30 10:06:05,162 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 10:06:05,163 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 10:06:05,165 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 10:06:05,166 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 10:06:05,168 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 10:06:05,169 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:06:05" (1/1) ... [2023-08-30 10:06:05,170 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3240b08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:06:05, skipping insertion in model container [2023-08-30 10:06:05,170 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:06:05" (1/1) ... [2023-08-30 10:06:05,174 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 10:06:05,229 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 10:06:05,475 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_24-sound_lock_racing.i[30176,30189] [2023-08-30 10:06:05,502 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 10:06:05,518 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 10:06:05,574 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_24-sound_lock_racing.i[30176,30189] [2023-08-30 10:06:05,586 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 10:06:05,624 INFO L208 MainTranslator]: Completed translation [2023-08-30 10:06:05,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:06:05 WrapperNode [2023-08-30 10:06:05,624 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 10:06:05,625 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 10:06:05,625 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 10:06:05,626 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 10:06:05,630 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:06:05" (1/1) ... [2023-08-30 10:06:05,644 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:06:05" (1/1) ... [2023-08-30 10:06:05,665 INFO L138 Inliner]: procedures = 170, calls = 36, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 90 [2023-08-30 10:06:05,666 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 10:06:05,667 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 10:06:05,667 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 10:06:05,667 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 10:06:05,675 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:06:05" (1/1) ... [2023-08-30 10:06:05,675 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:06:05" (1/1) ... [2023-08-30 10:06:05,685 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:06:05" (1/1) ... [2023-08-30 10:06:05,685 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:06:05" (1/1) ... [2023-08-30 10:06:05,692 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:06:05" (1/1) ... [2023-08-30 10:06:05,694 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:06:05" (1/1) ... [2023-08-30 10:06:05,696 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:06:05" (1/1) ... [2023-08-30 10:06:05,696 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:06:05" (1/1) ... [2023-08-30 10:06:05,699 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 10:06:05,700 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 10:06:05,700 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 10:06:05,700 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 10:06:05,700 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:06:05" (1/1) ... [2023-08-30 10:06:05,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 10:06:05,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:06:05,754 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 10:06:05,786 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 10:06:05,800 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 10:06:05,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 10:06:05,802 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 10:06:05,802 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 10:06:05,802 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 10:06:05,802 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-30 10:06:05,802 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-30 10:06:05,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 10:06:05,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 10:06:05,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 10:06:05,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 10:06:05,804 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 10:06:05,903 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 10:06:05,904 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 10:06:06,179 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 10:06:06,186 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 10:06:06,187 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-08-30 10:06:06,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:06:06 BoogieIcfgContainer [2023-08-30 10:06:06,189 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 10:06:06,191 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 10:06:06,191 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 10:06:06,194 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 10:06:06,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 10:06:05" (1/3) ... [2023-08-30 10:06:06,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c07a8ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:06:06, skipping insertion in model container [2023-08-30 10:06:06,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:06:05" (2/3) ... [2023-08-30 10:06:06,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c07a8ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:06:06, skipping insertion in model container [2023-08-30 10:06:06,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:06:06" (3/3) ... [2023-08-30 10:06:06,197 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_24-sound_lock_racing.i [2023-08-30 10:06:06,204 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 10:06:06,213 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 10:06:06,213 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-30 10:06:06,213 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 10:06:06,303 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-30 10:06:06,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 129 transitions, 266 flow [2023-08-30 10:06:06,388 INFO L130 PetriNetUnfolder]: 18/161 cut-off events. [2023-08-30 10:06:06,388 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 10:06:06,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167 conditions, 161 events. 18/161 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 335 event pairs, 0 based on Foata normal form. 0/132 useless extension candidates. Maximal degree in co-relation 77. Up to 4 conditions per place. [2023-08-30 10:06:06,394 INFO L82 GeneralOperation]: Start removeDead. Operand has 119 places, 129 transitions, 266 flow [2023-08-30 10:06:06,398 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 126 transitions, 260 flow [2023-08-30 10:06:06,402 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:06:06,409 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 117 places, 126 transitions, 260 flow [2023-08-30 10:06:06,412 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 117 places, 126 transitions, 260 flow [2023-08-30 10:06:06,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 126 transitions, 260 flow [2023-08-30 10:06:06,444 INFO L130 PetriNetUnfolder]: 17/158 cut-off events. [2023-08-30 10:06:06,450 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 10:06:06,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164 conditions, 158 events. 17/158 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 330 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 77. Up to 4 conditions per place. [2023-08-30 10:06:06,454 INFO L119 LiptonReduction]: Number of co-enabled transitions 3024 [2023-08-30 10:06:10,232 INFO L134 LiptonReduction]: Checked pairs total: 4791 [2023-08-30 10:06:10,233 INFO L136 LiptonReduction]: Total number of compositions: 115 [2023-08-30 10:06:10,246 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 10:06:10,252 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;@22f14be1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:06:10,252 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-08-30 10:06:10,256 INFO L130 PetriNetUnfolder]: 1/12 cut-off events. [2023-08-30 10:06:10,256 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:06:10,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:06:10,257 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 10:06:10,257 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 10:06:10,262 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:06:10,262 INFO L85 PathProgramCache]: Analyzing trace with hash 15265284, now seen corresponding path program 1 times [2023-08-30 10:06:10,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:06:10,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556266915] [2023-08-30 10:06:10,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:06:10,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:06:10,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:06:10,514 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 10:06:10,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:06:10,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556266915] [2023-08-30 10:06:10,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556266915] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:06:10,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:06:10,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:06:10,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279950800] [2023-08-30 10:06:10,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:06:10,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:06:10,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:06:10,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:06:10,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:06:10,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 244 [2023-08-30 10:06:10,570 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 38 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:10,570 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:06:10,571 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 244 [2023-08-30 10:06:10,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:06:10,655 INFO L130 PetriNetUnfolder]: 108/247 cut-off events. [2023-08-30 10:06:10,656 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 10:06:10,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 497 conditions, 247 events. 108/247 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1083 event pairs, 24 based on Foata normal form. 10/190 useless extension candidates. Maximal degree in co-relation 477. Up to 179 conditions per place. [2023-08-30 10:06:10,659 INFO L137 encePairwiseOnDemand]: 230/244 looper letters, 36 selfloop transitions, 3 changer transitions 0/41 dead transitions. [2023-08-30 10:06:10,659 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 41 transitions, 168 flow [2023-08-30 10:06:10,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:06:10,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:06:10,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 386 transitions. [2023-08-30 10:06:10,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5273224043715847 [2023-08-30 10:06:10,679 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 386 transitions. [2023-08-30 10:06:10,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 386 transitions. [2023-08-30 10:06:10,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:06:10,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 386 transitions. [2023-08-30 10:06:10,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:10,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 244.0) internal successors, (976), 4 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:10,692 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 244.0) internal successors, (976), 4 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:10,693 INFO L175 Difference]: Start difference. First operand has 33 places, 38 transitions, 84 flow. Second operand 3 states and 386 transitions. [2023-08-30 10:06:10,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 41 transitions, 168 flow [2023-08-30 10:06:10,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 41 transitions, 168 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 10:06:10,698 INFO L231 Difference]: Finished difference. Result has 35 places, 29 transitions, 82 flow [2023-08-30 10:06:10,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=35, PETRI_TRANSITIONS=29} [2023-08-30 10:06:10,703 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 2 predicate places. [2023-08-30 10:06:10,703 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 29 transitions, 82 flow [2023-08-30 10:06:10,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:10,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:06:10,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 10:06:10,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 10:06:10,704 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-08-30 10:06:10,705 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:06:10,705 INFO L85 PathProgramCache]: Analyzing trace with hash 15265283, now seen corresponding path program 1 times [2023-08-30 10:06:10,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:06:10,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210625726] [2023-08-30 10:06:10,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:06:10,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:06:10,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:06:10,847 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 10:06:10,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:06:10,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210625726] [2023-08-30 10:06:10,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210625726] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:06:10,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:06:10,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:06:10,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009973427] [2023-08-30 10:06:10,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:06:10,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:06:10,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:06:10,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:06:10,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:06:10,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 244 [2023-08-30 10:06:10,863 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 29 transitions, 82 flow. Second operand has 3 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 10:06:10,863 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:06:10,863 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 244 [2023-08-30 10:06:10,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:06:10,934 INFO L130 PetriNetUnfolder]: 96/232 cut-off events. [2023-08-30 10:06:10,935 INFO L131 PetriNetUnfolder]: For 38/38 co-relation queries the response was YES. [2023-08-30 10:06:10,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 539 conditions, 232 events. 96/232 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1021 event pairs, 0 based on Foata normal form. 13/208 useless extension candidates. Maximal degree in co-relation 490. Up to 204 conditions per place. [2023-08-30 10:06:10,939 INFO L137 encePairwiseOnDemand]: 241/244 looper letters, 36 selfloop transitions, 2 changer transitions 0/40 dead transitions. [2023-08-30 10:06:10,939 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 40 transitions, 180 flow [2023-08-30 10:06:10,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:06:10,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:06:10,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 372 transitions. [2023-08-30 10:06:10,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5081967213114754 [2023-08-30 10:06:10,941 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 372 transitions. [2023-08-30 10:06:10,942 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 372 transitions. [2023-08-30 10:06:10,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:06:10,943 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 372 transitions. [2023-08-30 10:06:10,945 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:10,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 244.0) internal successors, (976), 4 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:10,949 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 244.0) internal successors, (976), 4 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:10,949 INFO L175 Difference]: Start difference. First operand has 35 places, 29 transitions, 82 flow. Second operand 3 states and 372 transitions. [2023-08-30 10:06:10,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 40 transitions, 180 flow [2023-08-30 10:06:10,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 40 transitions, 174 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:06:10,954 INFO L231 Difference]: Finished difference. Result has 34 places, 28 transitions, 78 flow [2023-08-30 10:06:10,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=34, PETRI_TRANSITIONS=28} [2023-08-30 10:06:10,955 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 1 predicate places. [2023-08-30 10:06:10,955 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 28 transitions, 78 flow [2023-08-30 10:06:10,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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 10:06:10,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:06:10,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 10:06:10,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 10:06:10,956 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-08-30 10:06:10,960 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:06:10,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1785025199, now seen corresponding path program 1 times [2023-08-30 10:06:10,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:06:10,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574481626] [2023-08-30 10:06:10,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:06:10,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:06:10,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:06:11,040 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 10:06:11,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:06:11,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574481626] [2023-08-30 10:06:11,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574481626] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:06:11,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:06:11,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:06:11,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458204056] [2023-08-30 10:06:11,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:06:11,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:06:11,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:06:11,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:06:11,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:06:11,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 244 [2023-08-30 10:06:11,058 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 28 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:11,058 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:06:11,059 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 244 [2023-08-30 10:06:11,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:06:11,110 INFO L130 PetriNetUnfolder]: 80/189 cut-off events. [2023-08-30 10:06:11,111 INFO L131 PetriNetUnfolder]: For 42/42 co-relation queries the response was YES. [2023-08-30 10:06:11,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 431 conditions, 189 events. 80/189 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 648 event pairs, 16 based on Foata normal form. 0/157 useless extension candidates. Maximal degree in co-relation 402. Up to 140 conditions per place. [2023-08-30 10:06:11,112 INFO L137 encePairwiseOnDemand]: 240/244 looper letters, 30 selfloop transitions, 2 changer transitions 0/34 dead transitions. [2023-08-30 10:06:11,112 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 34 transitions, 162 flow [2023-08-30 10:06:11,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:06:11,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:06:11,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 369 transitions. [2023-08-30 10:06:11,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5040983606557377 [2023-08-30 10:06:11,115 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 369 transitions. [2023-08-30 10:06:11,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 369 transitions. [2023-08-30 10:06:11,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:06:11,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 369 transitions. [2023-08-30 10:06:11,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:11,118 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 244.0) internal successors, (976), 4 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:11,119 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 244.0) internal successors, (976), 4 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:11,119 INFO L175 Difference]: Start difference. First operand has 34 places, 28 transitions, 78 flow. Second operand 3 states and 369 transitions. [2023-08-30 10:06:11,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 34 transitions, 162 flow [2023-08-30 10:06:11,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 34 transitions, 156 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:06:11,132 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 74 flow [2023-08-30 10:06:11,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2023-08-30 10:06:11,133 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -1 predicate places. [2023-08-30 10:06:11,133 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 74 flow [2023-08-30 10:06:11,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:11,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:06:11,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:06:11,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 10:06:11,134 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 10:06:11,135 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:06:11,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1695553328, now seen corresponding path program 1 times [2023-08-30 10:06:11,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:06:11,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947527536] [2023-08-30 10:06:11,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:06:11,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:06:11,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:06:11,195 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 10:06:11,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:06:11,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947527536] [2023-08-30 10:06:11,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947527536] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:06:11,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:06:11,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:06:11,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166150605] [2023-08-30 10:06:11,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:06:11,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 10:06:11,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:06:11,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 10:06:11,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:06:11,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 244 [2023-08-30 10:06:11,227 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 74 flow. Second operand has 5 states, 5 states have (on average 109.6) internal successors, (548), 5 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:11,227 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:06:11,227 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 244 [2023-08-30 10:06:11,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:06:11,324 INFO L130 PetriNetUnfolder]: 72/171 cut-off events. [2023-08-30 10:06:11,324 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 10:06:11,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 390 conditions, 171 events. 72/171 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 541 event pairs, 8 based on Foata normal form. 0/149 useless extension candidates. Maximal degree in co-relation 363. Up to 68 conditions per place. [2023-08-30 10:06:11,328 INFO L137 encePairwiseOnDemand]: 239/244 looper letters, 42 selfloop transitions, 4 changer transitions 1/49 dead transitions. [2023-08-30 10:06:11,328 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 49 transitions, 232 flow [2023-08-30 10:06:11,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 10:06:11,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 10:06:11,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 587 transitions. [2023-08-30 10:06:11,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48114754098360657 [2023-08-30 10:06:11,332 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 587 transitions. [2023-08-30 10:06:11,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 587 transitions. [2023-08-30 10:06:11,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:06:11,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 587 transitions. [2023-08-30 10:06:11,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 117.4) internal successors, (587), 5 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:11,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 244.0) internal successors, (1464), 6 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:11,341 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 244.0) internal successors, (1464), 6 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:11,341 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 74 flow. Second operand 5 states and 587 transitions. [2023-08-30 10:06:11,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 49 transitions, 232 flow [2023-08-30 10:06:11,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 49 transitions, 228 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:06:11,343 INFO L231 Difference]: Finished difference. Result has 33 places, 25 transitions, 76 flow [2023-08-30 10:06:11,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=29, 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=76, PETRI_PLACES=33, PETRI_TRANSITIONS=25} [2023-08-30 10:06:11,345 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 0 predicate places. [2023-08-30 10:06:11,345 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 25 transitions, 76 flow [2023-08-30 10:06:11,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 109.6) internal successors, (548), 5 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:11,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:06:11,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:06:11,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 10:06:11,346 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-08-30 10:06:11,347 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:06:11,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1695553332, now seen corresponding path program 1 times [2023-08-30 10:06:11,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:06:11,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645573328] [2023-08-30 10:06:11,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:06:11,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:06:11,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:06:11,451 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 10:06:11,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:06:11,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645573328] [2023-08-30 10:06:11,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645573328] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:06:11,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:06:11,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:06:11,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916259719] [2023-08-30 10:06:11,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:06:11,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 10:06:11,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:06:11,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 10:06:11,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:06:11,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 244 [2023-08-30 10:06:11,477 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 25 transitions, 76 flow. Second operand has 5 states, 5 states have (on average 109.6) internal successors, (548), 5 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:11,477 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:06:11,477 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 244 [2023-08-30 10:06:11,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:06:11,556 INFO L130 PetriNetUnfolder]: 64/154 cut-off events. [2023-08-30 10:06:11,556 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2023-08-30 10:06:11,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 371 conditions, 154 events. 64/154 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 451 event pairs, 8 based on Foata normal form. 0/142 useless extension candidates. Maximal degree in co-relation 344. Up to 55 conditions per place. [2023-08-30 10:06:11,558 INFO L137 encePairwiseOnDemand]: 239/244 looper letters, 38 selfloop transitions, 4 changer transitions 5/48 dead transitions. [2023-08-30 10:06:11,558 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 48 transitions, 232 flow [2023-08-30 10:06:11,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 10:06:11,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 10:06:11,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 586 transitions. [2023-08-30 10:06:11,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48032786885245904 [2023-08-30 10:06:11,561 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 586 transitions. [2023-08-30 10:06:11,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 586 transitions. [2023-08-30 10:06:11,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:06:11,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 586 transitions. [2023-08-30 10:06:11,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 117.2) internal successors, (586), 5 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:11,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 244.0) internal successors, (1464), 6 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:11,565 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 244.0) internal successors, (1464), 6 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:11,566 INFO L175 Difference]: Start difference. First operand has 33 places, 25 transitions, 76 flow. Second operand 5 states and 586 transitions. [2023-08-30 10:06:11,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 48 transitions, 232 flow [2023-08-30 10:06:11,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 48 transitions, 224 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 10:06:11,570 INFO L231 Difference]: Finished difference. Result has 32 places, 22 transitions, 66 flow [2023-08-30 10:06:11,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=66, PETRI_PLACES=32, PETRI_TRANSITIONS=22} [2023-08-30 10:06:11,572 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -1 predicate places. [2023-08-30 10:06:11,572 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 22 transitions, 66 flow [2023-08-30 10:06:11,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 109.6) internal successors, (548), 5 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:11,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:06:11,573 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] [2023-08-30 10:06:11,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 10:06:11,574 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-08-30 10:06:11,574 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:06:11,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1788903821, now seen corresponding path program 1 times [2023-08-30 10:06:11,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:06:11,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303289051] [2023-08-30 10:06:11,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:06:11,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:06:11,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:06:11,649 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 10:06:11,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:06:11,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303289051] [2023-08-30 10:06:11,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303289051] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:06:11,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:06:11,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:06:11,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495210325] [2023-08-30 10:06:11,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:06:11,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:06:11,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:06:11,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:06:11,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:06:11,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 244 [2023-08-30 10:06:11,667 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 22 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:11,667 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:06:11,667 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 244 [2023-08-30 10:06:11,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:06:11,707 INFO L130 PetriNetUnfolder]: 56/134 cut-off events. [2023-08-30 10:06:11,707 INFO L131 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2023-08-30 10:06:11,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 319 conditions, 134 events. 56/134 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 373 event pairs, 48 based on Foata normal form. 0/133 useless extension candidates. Maximal degree in co-relation 298. Up to 114 conditions per place. [2023-08-30 10:06:11,708 INFO L137 encePairwiseOnDemand]: 242/244 looper letters, 27 selfloop transitions, 1 changer transitions 0/29 dead transitions. [2023-08-30 10:06:11,708 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 29 transitions, 142 flow [2023-08-30 10:06:11,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:06:11,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:06:11,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 362 transitions. [2023-08-30 10:06:11,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49453551912568305 [2023-08-30 10:06:11,710 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 362 transitions. [2023-08-30 10:06:11,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 362 transitions. [2023-08-30 10:06:11,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:06:11,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 362 transitions. [2023-08-30 10:06:11,712 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:11,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 244.0) internal successors, (976), 4 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:11,713 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 244.0) internal successors, (976), 4 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:11,713 INFO L175 Difference]: Start difference. First operand has 32 places, 22 transitions, 66 flow. Second operand 3 states and 362 transitions. [2023-08-30 10:06:11,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 29 transitions, 142 flow [2023-08-30 10:06:11,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 29 transitions, 124 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-30 10:06:11,715 INFO L231 Difference]: Finished difference. Result has 26 places, 21 transitions, 54 flow [2023-08-30 10:06:11,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=54, PETRI_PLACES=26, PETRI_TRANSITIONS=21} [2023-08-30 10:06:11,718 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -7 predicate places. [2023-08-30 10:06:11,718 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 21 transitions, 54 flow [2023-08-30 10:06:11,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:11,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:06:11,720 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] [2023-08-30 10:06:11,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 10:06:11,720 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-08-30 10:06:11,721 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:06:11,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1796266026, now seen corresponding path program 1 times [2023-08-30 10:06:11,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:06:11,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142307483] [2023-08-30 10:06:11,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:06:11,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:06:11,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:06:11,778 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 10:06:11,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:06:11,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142307483] [2023-08-30 10:06:11,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142307483] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:06:11,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:06:11,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:06:11,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769445594] [2023-08-30 10:06:11,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:06:11,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:06:11,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:06:11,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:06:11,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:06:11,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 244 [2023-08-30 10:06:11,790 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 21 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:11,790 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:06:11,790 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 244 [2023-08-30 10:06:11,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:06:11,832 INFO L130 PetriNetUnfolder]: 56/133 cut-off events. [2023-08-30 10:06:11,832 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2023-08-30 10:06:11,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 298 conditions, 133 events. 56/133 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 374 event pairs, 48 based on Foata normal form. 1/133 useless extension candidates. Maximal degree in co-relation 249. Up to 114 conditions per place. [2023-08-30 10:06:11,833 INFO L137 encePairwiseOnDemand]: 242/244 looper letters, 0 selfloop transitions, 0 changer transitions 28/28 dead transitions. [2023-08-30 10:06:11,833 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 28 transitions, 122 flow [2023-08-30 10:06:11,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:06:11,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:06:11,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 361 transitions. [2023-08-30 10:06:11,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4931693989071038 [2023-08-30 10:06:11,835 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 361 transitions. [2023-08-30 10:06:11,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 361 transitions. [2023-08-30 10:06:11,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:06:11,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 361 transitions. [2023-08-30 10:06:11,837 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:11,838 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 244.0) internal successors, (976), 4 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:11,838 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 244.0) internal successors, (976), 4 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:11,838 INFO L175 Difference]: Start difference. First operand has 26 places, 21 transitions, 54 flow. Second operand 3 states and 361 transitions. [2023-08-30 10:06:11,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 28 transitions, 122 flow [2023-08-30 10:06:11,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 28 transitions, 121 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:06:11,840 INFO L231 Difference]: Finished difference. Result has 26 places, 0 transitions, 0 flow [2023-08-30 10:06:11,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=26, PETRI_TRANSITIONS=0} [2023-08-30 10:06:11,841 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -7 predicate places. [2023-08-30 10:06:11,841 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 0 transitions, 0 flow [2023-08-30 10:06:11,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:11,844 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 12 remaining) [2023-08-30 10:06:11,845 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 12 remaining) [2023-08-30 10:06:11,845 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 12 remaining) [2023-08-30 10:06:11,846 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 12 remaining) [2023-08-30 10:06:11,846 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 12 remaining) [2023-08-30 10:06:11,846 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 12 remaining) [2023-08-30 10:06:11,846 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 12 remaining) [2023-08-30 10:06:11,847 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 12 remaining) [2023-08-30 10:06:11,847 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 12 remaining) [2023-08-30 10:06:11,847 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 12 remaining) [2023-08-30 10:06:11,847 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 12 remaining) [2023-08-30 10:06:11,847 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 12 remaining) [2023-08-30 10:06:11,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 10:06:11,848 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:06:11,850 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 10:06:11,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 129 transitions, 266 flow [2023-08-30 10:06:11,875 INFO L130 PetriNetUnfolder]: 18/161 cut-off events. [2023-08-30 10:06:11,876 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 10:06:11,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167 conditions, 161 events. 18/161 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 335 event pairs, 0 based on Foata normal form. 0/132 useless extension candidates. Maximal degree in co-relation 77. Up to 4 conditions per place. [2023-08-30 10:06:11,876 INFO L82 GeneralOperation]: Start removeDead. Operand has 119 places, 129 transitions, 266 flow [2023-08-30 10:06:11,877 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 111 places, 120 transitions, 245 flow [2023-08-30 10:06:11,878 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:06:11,878 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 111 places, 120 transitions, 245 flow [2023-08-30 10:06:11,878 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 111 places, 120 transitions, 245 flow [2023-08-30 10:06:11,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 111 places, 120 transitions, 245 flow [2023-08-30 10:06:11,890 INFO L130 PetriNetUnfolder]: 17/152 cut-off events. [2023-08-30 10:06:11,890 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:06:11,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 152 events. 17/152 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 318 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 77. Up to 4 conditions per place. [2023-08-30 10:06:11,892 INFO L119 LiptonReduction]: Number of co-enabled transitions 3024 [2023-08-30 10:06:15,077 INFO L134 LiptonReduction]: Checked pairs total: 4496 [2023-08-30 10:06:15,077 INFO L136 LiptonReduction]: Total number of compositions: 110 [2023-08-30 10:06:15,079 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-30 10:06:15,080 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;@22f14be1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:06:15,080 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-30 10:06:15,083 INFO L130 PetriNetUnfolder]: 3/29 cut-off events. [2023-08-30 10:06:15,083 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:06:15,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:06:15,084 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-30 10:06:15,084 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 10:06:15,084 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:06:15,085 INFO L85 PathProgramCache]: Analyzing trace with hash 746532693, now seen corresponding path program 1 times [2023-08-30 10:06:15,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:06:15,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181640785] [2023-08-30 10:06:15,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:06:15,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:06:15,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 10:06:15,096 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 10:06:15,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 10:06:15,120 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 10:06:15,121 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 10:06:15,121 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-30 10:06:15,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 10:06:15,121 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-30 10:06:15,122 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-30 10:06:15,122 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 10:06:15,123 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-30 10:06:15,147 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 10:06:15,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 152 places, 167 transitions, 352 flow [2023-08-30 10:06:15,171 INFO L130 PetriNetUnfolder]: 32/267 cut-off events. [2023-08-30 10:06:15,171 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 10:06:15,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 281 conditions, 267 events. 32/267 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 731 event pairs, 0 based on Foata normal form. 0/213 useless extension candidates. Maximal degree in co-relation 163. Up to 8 conditions per place. [2023-08-30 10:06:15,173 INFO L82 GeneralOperation]: Start removeDead. Operand has 152 places, 167 transitions, 352 flow [2023-08-30 10:06:15,175 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 152 places, 167 transitions, 352 flow [2023-08-30 10:06:15,175 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:06:15,175 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 152 places, 167 transitions, 352 flow [2023-08-30 10:06:15,175 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 152 places, 167 transitions, 352 flow [2023-08-30 10:06:15,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 152 places, 167 transitions, 352 flow [2023-08-30 10:06:15,195 INFO L130 PetriNetUnfolder]: 32/267 cut-off events. [2023-08-30 10:06:15,196 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 10:06:15,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 281 conditions, 267 events. 32/267 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 731 event pairs, 0 based on Foata normal form. 0/213 useless extension candidates. Maximal degree in co-relation 163. Up to 8 conditions per place. [2023-08-30 10:06:15,202 INFO L119 LiptonReduction]: Number of co-enabled transitions 10008 [2023-08-30 10:06:18,540 INFO L134 LiptonReduction]: Checked pairs total: 26091 [2023-08-30 10:06:18,541 INFO L136 LiptonReduction]: Total number of compositions: 135 [2023-08-30 10:06:18,542 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 10:06:18,543 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;@22f14be1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:06:18,543 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-08-30 10:06:18,545 INFO L130 PetriNetUnfolder]: 2/14 cut-off events. [2023-08-30 10:06:18,545 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:06:18,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:06:18,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 10:06:18,545 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 10:06:18,546 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:06:18,546 INFO L85 PathProgramCache]: Analyzing trace with hash 902899794, now seen corresponding path program 1 times [2023-08-30 10:06:18,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:06:18,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733712687] [2023-08-30 10:06:18,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:06:18,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:06:18,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:06:18,576 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 10:06:18,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:06:18,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733712687] [2023-08-30 10:06:18,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733712687] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:06:18,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:06:18,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:06:18,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606718261] [2023-08-30 10:06:18,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:06:18,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:06:18,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:06:18,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:06:18,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:06:18,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 302 [2023-08-30 10:06:18,586 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 66 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:18,586 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:06:18,586 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 302 [2023-08-30 10:06:18,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:06:19,107 INFO L130 PetriNetUnfolder]: 4435/7401 cut-off events. [2023-08-30 10:06:19,107 INFO L131 PetriNetUnfolder]: For 80/80 co-relation queries the response was YES. [2023-08-30 10:06:19,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14568 conditions, 7401 events. 4435/7401 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 49586 event pairs, 2080 based on Foata normal form. 710/5791 useless extension candidates. Maximal degree in co-relation 1679. Up to 7046 conditions per place. [2023-08-30 10:06:19,143 INFO L137 encePairwiseOnDemand]: 283/302 looper letters, 58 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2023-08-30 10:06:19,144 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 67 transitions, 272 flow [2023-08-30 10:06:19,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:06:19,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:06:19,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 506 transitions. [2023-08-30 10:06:19,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5584988962472406 [2023-08-30 10:06:19,146 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 506 transitions. [2023-08-30 10:06:19,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 506 transitions. [2023-08-30 10:06:19,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:06:19,146 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 506 transitions. [2023-08-30 10:06:19,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 168.66666666666666) internal successors, (506), 3 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:19,149 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 302.0) internal successors, (1208), 4 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:19,149 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 302.0) internal successors, (1208), 4 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:19,149 INFO L175 Difference]: Start difference. First operand has 55 places, 66 transitions, 150 flow. Second operand 3 states and 506 transitions. [2023-08-30 10:06:19,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 67 transitions, 272 flow [2023-08-30 10:06:19,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 67 transitions, 272 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 10:06:19,153 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 138 flow [2023-08-30 10:06:19,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2023-08-30 10:06:19,154 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 3 predicate places. [2023-08-30 10:06:19,155 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 138 flow [2023-08-30 10:06:19,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:19,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:06:19,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:06:19,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 10:06:19,155 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:06:19,156 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:06:19,156 INFO L85 PathProgramCache]: Analyzing trace with hash 110811665, now seen corresponding path program 1 times [2023-08-30 10:06:19,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:06:19,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853245238] [2023-08-30 10:06:19,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:06:19,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:06:19,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:06:19,192 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 10:06:19,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:06:19,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853245238] [2023-08-30 10:06:19,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853245238] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:06:19,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:06:19,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:06:19,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248132780] [2023-08-30 10:06:19,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:06:19,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:06:19,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:06:19,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:06:19,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:06:19,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 302 [2023-08-30 10:06:19,205 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 138 flow. Second operand has 3 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:19,205 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:06:19,206 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 302 [2023-08-30 10:06:19,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:06:19,725 INFO L130 PetriNetUnfolder]: 4011/6623 cut-off events. [2023-08-30 10:06:19,726 INFO L131 PetriNetUnfolder]: For 463/463 co-relation queries the response was YES. [2023-08-30 10:06:19,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13868 conditions, 6623 events. 4011/6623 cut-off events. For 463/463 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 41886 event pairs, 1437 based on Foata normal form. 0/4851 useless extension candidates. Maximal degree in co-relation 13780. Up to 6028 conditions per place. [2023-08-30 10:06:19,765 INFO L137 encePairwiseOnDemand]: 295/302 looper letters, 63 selfloop transitions, 3 changer transitions 0/73 dead transitions. [2023-08-30 10:06:19,765 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 73 transitions, 326 flow [2023-08-30 10:06:19,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:06:19,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:06:19,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 488 transitions. [2023-08-30 10:06:19,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5386313465783664 [2023-08-30 10:06:19,767 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 488 transitions. [2023-08-30 10:06:19,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 488 transitions. [2023-08-30 10:06:19,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:06:19,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 488 transitions. [2023-08-30 10:06:19,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.66666666666666) internal successors, (488), 3 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 10:06:19,770 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 302.0) internal successors, (1208), 4 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:19,770 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 302.0) internal successors, (1208), 4 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:19,770 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 138 flow. Second operand 3 states and 488 transitions. [2023-08-30 10:06:19,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 73 transitions, 326 flow [2023-08-30 10:06:19,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 73 transitions, 323 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:06:19,773 INFO L231 Difference]: Finished difference. Result has 60 places, 55 transitions, 161 flow [2023-08-30 10:06:19,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=161, PETRI_PLACES=60, PETRI_TRANSITIONS=55} [2023-08-30 10:06:19,774 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 5 predicate places. [2023-08-30 10:06:19,774 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 55 transitions, 161 flow [2023-08-30 10:06:19,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:19,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:06:19,775 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 10:06:19,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 10:06:19,775 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 10:06:19,775 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:06:19,775 INFO L85 PathProgramCache]: Analyzing trace with hash 530687290, now seen corresponding path program 1 times [2023-08-30 10:06:19,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:06:19,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297985780] [2023-08-30 10:06:19,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:06:19,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:06:19,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:06:19,836 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 10:06:19,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:06:19,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297985780] [2023-08-30 10:06:19,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297985780] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:06:19,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:06:19,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:06:19,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659574206] [2023-08-30 10:06:19,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:06:19,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:06:19,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:06:19,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:06:19,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:06:19,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 302 [2023-08-30 10:06:19,846 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 55 transitions, 161 flow. Second operand has 3 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:19,846 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:06:19,846 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 302 [2023-08-30 10:06:19,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:06:20,321 INFO L130 PetriNetUnfolder]: 3683/6102 cut-off events. [2023-08-30 10:06:20,321 INFO L131 PetriNetUnfolder]: For 863/863 co-relation queries the response was YES. [2023-08-30 10:06:20,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13424 conditions, 6102 events. 3683/6102 cut-off events. For 863/863 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 37549 event pairs, 3579 based on Foata normal form. 0/4791 useless extension candidates. Maximal degree in co-relation 9700. Up to 5910 conditions per place. [2023-08-30 10:06:20,347 INFO L137 encePairwiseOnDemand]: 300/302 looper letters, 46 selfloop transitions, 1 changer transitions 0/54 dead transitions. [2023-08-30 10:06:20,348 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 54 transitions, 251 flow [2023-08-30 10:06:20,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:06:20,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:06:20,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 468 transitions. [2023-08-30 10:06:20,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5165562913907285 [2023-08-30 10:06:20,349 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 468 transitions. [2023-08-30 10:06:20,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 468 transitions. [2023-08-30 10:06:20,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:06:20,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 468 transitions. [2023-08-30 10:06:20,351 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:20,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 302.0) internal successors, (1208), 4 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:20,353 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 302.0) internal successors, (1208), 4 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:20,353 INFO L175 Difference]: Start difference. First operand has 60 places, 55 transitions, 161 flow. Second operand 3 states and 468 transitions. [2023-08-30 10:06:20,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 54 transitions, 251 flow [2023-08-30 10:06:20,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 54 transitions, 248 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:06:20,356 INFO L231 Difference]: Finished difference. Result has 60 places, 54 transitions, 156 flow [2023-08-30 10:06:20,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=60, PETRI_TRANSITIONS=54} [2023-08-30 10:06:20,357 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 5 predicate places. [2023-08-30 10:06:20,357 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 54 transitions, 156 flow [2023-08-30 10:06:20,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:20,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:06:20,358 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 10:06:20,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 10:06:20,358 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 10:06:20,358 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:06:20,358 INFO L85 PathProgramCache]: Analyzing trace with hash 530687289, now seen corresponding path program 1 times [2023-08-30 10:06:20,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:06:20,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812061276] [2023-08-30 10:06:20,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:06:20,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:06:20,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:06:20,382 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 10:06:20,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:06:20,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812061276] [2023-08-30 10:06:20,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812061276] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:06:20,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:06:20,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:06:20,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185597367] [2023-08-30 10:06:20,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:06:20,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:06:20,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:06:20,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:06:20,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:06:20,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 302 [2023-08-30 10:06:20,391 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 54 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:20,391 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:06:20,391 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 302 [2023-08-30 10:06:20,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:06:20,803 INFO L130 PetriNetUnfolder]: 3355/5476 cut-off events. [2023-08-30 10:06:20,803 INFO L131 PetriNetUnfolder]: For 675/675 co-relation queries the response was YES. [2023-08-30 10:06:20,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11970 conditions, 5476 events. 3355/5476 cut-off events. For 675/675 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 35107 event pairs, 485 based on Foata normal form. 0/4424 useless extension candidates. Maximal degree in co-relation 11958. Up to 4522 conditions per place. [2023-08-30 10:06:20,825 INFO L137 encePairwiseOnDemand]: 298/302 looper letters, 71 selfloop transitions, 4 changer transitions 0/82 dead transitions. [2023-08-30 10:06:20,825 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 82 transitions, 376 flow [2023-08-30 10:06:20,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:06:20,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:06:20,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 491 transitions. [2023-08-30 10:06:20,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5419426048565121 [2023-08-30 10:06:20,827 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 491 transitions. [2023-08-30 10:06:20,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 491 transitions. [2023-08-30 10:06:20,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:06:20,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 491 transitions. [2023-08-30 10:06:20,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:20,830 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 302.0) internal successors, (1208), 4 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:20,830 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 302.0) internal successors, (1208), 4 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:20,830 INFO L175 Difference]: Start difference. First operand has 60 places, 54 transitions, 156 flow. Second operand 3 states and 491 transitions. [2023-08-30 10:06:20,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 82 transitions, 376 flow [2023-08-30 10:06:20,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 82 transitions, 375 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:06:20,833 INFO L231 Difference]: Finished difference. Result has 61 places, 54 transitions, 167 flow [2023-08-30 10:06:20,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=167, PETRI_PLACES=61, PETRI_TRANSITIONS=54} [2023-08-30 10:06:20,834 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 6 predicate places. [2023-08-30 10:06:20,834 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 54 transitions, 167 flow [2023-08-30 10:06:20,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:20,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:06:20,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:06:20,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 10:06:20,835 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 10:06:20,835 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:06:20,835 INFO L85 PathProgramCache]: Analyzing trace with hash 665812879, now seen corresponding path program 1 times [2023-08-30 10:06:20,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:06:20,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542082494] [2023-08-30 10:06:20,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:06:20,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:06:20,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:06:20,888 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 10:06:20,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:06:20,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542082494] [2023-08-30 10:06:20,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542082494] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:06:20,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:06:20,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:06:20,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590056665] [2023-08-30 10:06:20,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:06:20,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 10:06:20,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:06:20,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 10:06:20,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:06:20,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 302 [2023-08-30 10:06:20,911 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 54 transitions, 167 flow. Second operand has 5 states, 5 states have (on average 137.8) internal successors, (689), 5 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:20,912 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:06:20,912 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 302 [2023-08-30 10:06:20,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:06:21,551 INFO L130 PetriNetUnfolder]: 4155/6959 cut-off events. [2023-08-30 10:06:21,552 INFO L131 PetriNetUnfolder]: For 2403/2403 co-relation queries the response was YES. [2023-08-30 10:06:21,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15685 conditions, 6959 events. 4155/6959 cut-off events. For 2403/2403 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 44564 event pairs, 635 based on Foata normal form. 0/5803 useless extension candidates. Maximal degree in co-relation 15671. Up to 3675 conditions per place. [2023-08-30 10:06:21,592 INFO L137 encePairwiseOnDemand]: 287/302 looper letters, 147 selfloop transitions, 19 changer transitions 0/173 dead transitions. [2023-08-30 10:06:21,592 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 173 transitions, 857 flow [2023-08-30 10:06:21,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 10:06:21,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 10:06:21,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1118 transitions. [2023-08-30 10:06:21,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5288552507095553 [2023-08-30 10:06:21,596 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1118 transitions. [2023-08-30 10:06:21,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1118 transitions. [2023-08-30 10:06:21,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:06:21,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1118 transitions. [2023-08-30 10:06:21,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 159.71428571428572) internal successors, (1118), 7 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:21,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 302.0) internal successors, (2416), 8 states have internal predecessors, (2416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:21,604 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 302.0) internal successors, (2416), 8 states have internal predecessors, (2416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:21,604 INFO L175 Difference]: Start difference. First operand has 61 places, 54 transitions, 167 flow. Second operand 7 states and 1118 transitions. [2023-08-30 10:06:21,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 173 transitions, 857 flow [2023-08-30 10:06:21,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 173 transitions, 839 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:06:21,611 INFO L231 Difference]: Finished difference. Result has 71 places, 70 transitions, 322 flow [2023-08-30 10:06:21,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=322, PETRI_PLACES=71, PETRI_TRANSITIONS=70} [2023-08-30 10:06:21,612 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 16 predicate places. [2023-08-30 10:06:21,612 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 70 transitions, 322 flow [2023-08-30 10:06:21,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 137.8) internal successors, (689), 5 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:21,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:06:21,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:06:21,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 10:06:21,613 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 10:06:21,614 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:06:21,614 INFO L85 PathProgramCache]: Analyzing trace with hash 665812810, now seen corresponding path program 1 times [2023-08-30 10:06:21,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:06:21,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073846333] [2023-08-30 10:06:21,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:06:21,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:06:21,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:06:21,680 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 10:06:21,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:06:21,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073846333] [2023-08-30 10:06:21,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073846333] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:06:21,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:06:21,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:06:21,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583620619] [2023-08-30 10:06:21,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:06:21,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 10:06:21,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:06:21,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 10:06:21,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:06:21,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 302 [2023-08-30 10:06:21,722 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 70 transitions, 322 flow. Second operand has 5 states, 5 states have (on average 137.8) internal successors, (689), 5 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:21,722 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:06:21,722 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 302 [2023-08-30 10:06:21,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:06:22,311 INFO L130 PetriNetUnfolder]: 3903/6684 cut-off events. [2023-08-30 10:06:22,311 INFO L131 PetriNetUnfolder]: For 5369/5369 co-relation queries the response was YES. [2023-08-30 10:06:22,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18237 conditions, 6684 events. 3903/6684 cut-off events. For 5369/5369 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 43425 event pairs, 575 based on Foata normal form. 253/6576 useless extension candidates. Maximal degree in co-relation 18217. Up to 3781 conditions per place. [2023-08-30 10:06:22,354 INFO L137 encePairwiseOnDemand]: 287/302 looper letters, 150 selfloop transitions, 24 changer transitions 0/181 dead transitions. [2023-08-30 10:06:22,355 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 181 transitions, 1040 flow [2023-08-30 10:06:22,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 10:06:22,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 10:06:22,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1115 transitions. [2023-08-30 10:06:22,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5274361400189215 [2023-08-30 10:06:22,358 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1115 transitions. [2023-08-30 10:06:22,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1115 transitions. [2023-08-30 10:06:22,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:06:22,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1115 transitions. [2023-08-30 10:06:22,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 159.28571428571428) internal successors, (1115), 7 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:22,365 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 302.0) internal successors, (2416), 8 states have internal predecessors, (2416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:22,366 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 302.0) internal successors, (2416), 8 states have internal predecessors, (2416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:22,366 INFO L175 Difference]: Start difference. First operand has 71 places, 70 transitions, 322 flow. Second operand 7 states and 1115 transitions. [2023-08-30 10:06:22,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 181 transitions, 1040 flow [2023-08-30 10:06:22,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 181 transitions, 1032 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-30 10:06:22,384 INFO L231 Difference]: Finished difference. Result has 80 places, 82 transitions, 508 flow [2023-08-30 10:06:22,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=508, PETRI_PLACES=80, PETRI_TRANSITIONS=82} [2023-08-30 10:06:22,385 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 25 predicate places. [2023-08-30 10:06:22,386 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 82 transitions, 508 flow [2023-08-30 10:06:22,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 137.8) internal successors, (689), 5 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:22,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:06:22,386 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:06:22,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 10:06:22,387 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:06:22,387 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:06:22,387 INFO L85 PathProgramCache]: Analyzing trace with hash -215253609, now seen corresponding path program 1 times [2023-08-30 10:06:22,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:06:22,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846750893] [2023-08-30 10:06:22,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:06:22,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:06:22,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:06:22,455 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 10:06:22,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:06:22,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846750893] [2023-08-30 10:06:22,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846750893] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:06:22,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:06:22,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:06:22,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079655988] [2023-08-30 10:06:22,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:06:22,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 10:06:22,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:06:22,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 10:06:22,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:06:22,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 302 [2023-08-30 10:06:22,480 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 82 transitions, 508 flow. Second operand has 5 states, 5 states have (on average 138.2) internal successors, (691), 5 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:22,480 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:06:22,481 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 302 [2023-08-30 10:06:22,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:06:23,109 INFO L130 PetriNetUnfolder]: 4265/7189 cut-off events. [2023-08-30 10:06:23,109 INFO L131 PetriNetUnfolder]: For 13264/13264 co-relation queries the response was YES. [2023-08-30 10:06:23,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22106 conditions, 7189 events. 4265/7189 cut-off events. For 13264/13264 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 46260 event pairs, 916 based on Foata normal form. 176/6986 useless extension candidates. Maximal degree in co-relation 22081. Up to 4743 conditions per place. [2023-08-30 10:06:23,147 INFO L137 encePairwiseOnDemand]: 289/302 looper letters, 133 selfloop transitions, 22 changer transitions 0/162 dead transitions. [2023-08-30 10:06:23,148 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 162 transitions, 1122 flow [2023-08-30 10:06:23,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 10:06:23,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 10:06:23,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 942 transitions. [2023-08-30 10:06:23,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5198675496688742 [2023-08-30 10:06:23,150 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 942 transitions. [2023-08-30 10:06:23,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 942 transitions. [2023-08-30 10:06:23,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:06:23,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 942 transitions. [2023-08-30 10:06:23,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 157.0) internal successors, (942), 6 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:23,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 302.0) internal successors, (2114), 7 states have internal predecessors, (2114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:23,156 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 302.0) internal successors, (2114), 7 states have internal predecessors, (2114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:23,156 INFO L175 Difference]: Start difference. First operand has 80 places, 82 transitions, 508 flow. Second operand 6 states and 942 transitions. [2023-08-30 10:06:23,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 162 transitions, 1122 flow [2023-08-30 10:06:23,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 162 transitions, 1092 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-08-30 10:06:23,221 INFO L231 Difference]: Finished difference. Result has 86 places, 92 transitions, 676 flow [2023-08-30 10:06:23,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=676, PETRI_PLACES=86, PETRI_TRANSITIONS=92} [2023-08-30 10:06:23,221 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 31 predicate places. [2023-08-30 10:06:23,221 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 92 transitions, 676 flow [2023-08-30 10:06:23,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 138.2) internal successors, (691), 5 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:23,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:06:23,222 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:06:23,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 10:06:23,223 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:06:23,223 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:06:23,223 INFO L85 PathProgramCache]: Analyzing trace with hash -215253610, now seen corresponding path program 1 times [2023-08-30 10:06:23,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:06:23,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398877389] [2023-08-30 10:06:23,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:06:23,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:06:23,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:06:23,292 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 10:06:23,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:06:23,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398877389] [2023-08-30 10:06:23,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398877389] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:06:23,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:06:23,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:06:23,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131843331] [2023-08-30 10:06:23,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:06:23,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 10:06:23,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:06:23,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 10:06:23,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:06:23,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 302 [2023-08-30 10:06:23,333 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 92 transitions, 676 flow. Second operand has 5 states, 5 states have (on average 138.2) internal successors, (691), 5 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:23,333 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:06:23,333 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 302 [2023-08-30 10:06:23,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:06:23,900 INFO L130 PetriNetUnfolder]: 3899/6616 cut-off events. [2023-08-30 10:06:23,900 INFO L131 PetriNetUnfolder]: For 17283/17283 co-relation queries the response was YES. [2023-08-30 10:06:23,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21470 conditions, 6616 events. 3899/6616 cut-off events. For 17283/17283 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 42009 event pairs, 886 based on Foata normal form. 176/6436 useless extension candidates. Maximal degree in co-relation 21441. Up to 4489 conditions per place. [2023-08-30 10:06:23,936 INFO L137 encePairwiseOnDemand]: 289/302 looper letters, 128 selfloop transitions, 20 changer transitions 0/155 dead transitions. [2023-08-30 10:06:23,937 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 155 transitions, 1123 flow [2023-08-30 10:06:23,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 10:06:23,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 10:06:23,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 941 transitions. [2023-08-30 10:06:23,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5193156732891833 [2023-08-30 10:06:23,940 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 941 transitions. [2023-08-30 10:06:23,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 941 transitions. [2023-08-30 10:06:23,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:06:23,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 941 transitions. [2023-08-30 10:06:23,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 156.83333333333334) internal successors, (941), 6 states have internal predecessors, (941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:23,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 302.0) internal successors, (2114), 7 states have internal predecessors, (2114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:23,945 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 302.0) internal successors, (2114), 7 states have internal predecessors, (2114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:23,946 INFO L175 Difference]: Start difference. First operand has 86 places, 92 transitions, 676 flow. Second operand 6 states and 941 transitions. [2023-08-30 10:06:23,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 155 transitions, 1123 flow [2023-08-30 10:06:24,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 155 transitions, 1106 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-30 10:06:24,007 INFO L231 Difference]: Finished difference. Result has 90 places, 85 transitions, 628 flow [2023-08-30 10:06:24,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=588, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=628, PETRI_PLACES=90, PETRI_TRANSITIONS=85} [2023-08-30 10:06:24,008 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 35 predicate places. [2023-08-30 10:06:24,008 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 85 transitions, 628 flow [2023-08-30 10:06:24,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 138.2) internal successors, (691), 5 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:24,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:06:24,009 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 10:06:24,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 10:06:24,009 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 10:06:24,010 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:06:24,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1432301725, now seen corresponding path program 1 times [2023-08-30 10:06:24,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:06:24,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213395602] [2023-08-30 10:06:24,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:06:24,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:06:24,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:06:24,099 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 10:06:24,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:06:24,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213395602] [2023-08-30 10:06:24,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213395602] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:06:24,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1976874121] [2023-08-30 10:06:24,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:06:24,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:06:24,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:06:24,107 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 10:06:24,111 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 10:06:24,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:06:24,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 10:06:24,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:06:24,300 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 10:06:24,301 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:06:24,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1976874121] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:06:24,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:06:24,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 9 [2023-08-30 10:06:24,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642870571] [2023-08-30 10:06:24,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:06:24,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 10:06:24,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:06:24,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 10:06:24,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-08-30 10:06:24,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 302 [2023-08-30 10:06:24,346 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 85 transitions, 628 flow. Second operand has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:24,346 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:06:24,347 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 302 [2023-08-30 10:06:24,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:06:25,254 INFO L130 PetriNetUnfolder]: 5207/8845 cut-off events. [2023-08-30 10:06:25,254 INFO L131 PetriNetUnfolder]: For 23718/23718 co-relation queries the response was YES. [2023-08-30 10:06:25,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28210 conditions, 8845 events. 5207/8845 cut-off events. For 23718/23718 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 59615 event pairs, 1143 based on Foata normal form. 214/8554 useless extension candidates. Maximal degree in co-relation 28180. Up to 3256 conditions per place. [2023-08-30 10:06:25,302 INFO L137 encePairwiseOnDemand]: 289/302 looper letters, 158 selfloop transitions, 48 changer transitions 0/213 dead transitions. [2023-08-30 10:06:25,303 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 213 transitions, 1561 flow [2023-08-30 10:06:25,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 10:06:25,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 10:06:25,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1127 transitions. [2023-08-30 10:06:25,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5331125827814569 [2023-08-30 10:06:25,307 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1127 transitions. [2023-08-30 10:06:25,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1127 transitions. [2023-08-30 10:06:25,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:06:25,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1127 transitions. [2023-08-30 10:06:25,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 161.0) internal successors, (1127), 7 states have internal predecessors, (1127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:25,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 302.0) internal successors, (2416), 8 states have internal predecessors, (2416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:25,314 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 302.0) internal successors, (2416), 8 states have internal predecessors, (2416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:25,314 INFO L175 Difference]: Start difference. First operand has 90 places, 85 transitions, 628 flow. Second operand 7 states and 1127 transitions. [2023-08-30 10:06:25,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 213 transitions, 1561 flow [2023-08-30 10:06:25,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 213 transitions, 1545 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-30 10:06:25,377 INFO L231 Difference]: Finished difference. Result has 95 places, 106 transitions, 967 flow [2023-08-30 10:06:25,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=599, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=967, PETRI_PLACES=95, PETRI_TRANSITIONS=106} [2023-08-30 10:06:25,378 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 40 predicate places. [2023-08-30 10:06:25,378 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 106 transitions, 967 flow [2023-08-30 10:06:25,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:25,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:06:25,379 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 10:06:25,384 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 10:06:25,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-30 10:06:25,584 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 10:06:25,584 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:06:25,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1782342708, now seen corresponding path program 1 times [2023-08-30 10:06:25,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:06:25,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457257752] [2023-08-30 10:06:25,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:06:25,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:06:25,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:06:25,648 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 10:06:25,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:06:25,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457257752] [2023-08-30 10:06:25,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457257752] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:06:25,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:06:25,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:06:25,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642840207] [2023-08-30 10:06:25,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:06:25,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:06:25,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:06:25,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:06:25,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:06:25,680 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 302 [2023-08-30 10:06:25,681 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 106 transitions, 967 flow. Second operand has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:25,681 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:06:25,681 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 302 [2023-08-30 10:06:25,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:06:26,479 INFO L130 PetriNetUnfolder]: 4911/8641 cut-off events. [2023-08-30 10:06:26,479 INFO L131 PetriNetUnfolder]: For 32845/32845 co-relation queries the response was YES. [2023-08-30 10:06:26,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29768 conditions, 8641 events. 4911/8641 cut-off events. For 32845/32845 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 61224 event pairs, 2591 based on Foata normal form. 70/7989 useless extension candidates. Maximal degree in co-relation 29734. Up to 6758 conditions per place. [2023-08-30 10:06:26,527 INFO L137 encePairwiseOnDemand]: 292/302 looper letters, 147 selfloop transitions, 12 changer transitions 0/166 dead transitions. [2023-08-30 10:06:26,528 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 166 transitions, 1769 flow [2023-08-30 10:06:26,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:06:26,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:06:26,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 483 transitions. [2023-08-30 10:06:26,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5331125827814569 [2023-08-30 10:06:26,530 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 483 transitions. [2023-08-30 10:06:26,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 483 transitions. [2023-08-30 10:06:26,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:06:26,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 483 transitions. [2023-08-30 10:06:26,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:26,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 302.0) internal successors, (1208), 4 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:26,534 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 302.0) internal successors, (1208), 4 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:26,534 INFO L175 Difference]: Start difference. First operand has 95 places, 106 transitions, 967 flow. Second operand 3 states and 483 transitions. [2023-08-30 10:06:26,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 166 transitions, 1769 flow [2023-08-30 10:06:26,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 166 transitions, 1743 flow, removed 13 selfloop flow, removed 0 redundant places. [2023-08-30 10:06:26,633 INFO L231 Difference]: Finished difference. Result has 98 places, 116 transitions, 1046 flow [2023-08-30 10:06:26,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=951, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1046, PETRI_PLACES=98, PETRI_TRANSITIONS=116} [2023-08-30 10:06:26,633 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 43 predicate places. [2023-08-30 10:06:26,634 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 116 transitions, 1046 flow [2023-08-30 10:06:26,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:26,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:06:26,635 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 10:06:26,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-30 10:06:26,635 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 10:06:26,635 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:06:26,635 INFO L85 PathProgramCache]: Analyzing trace with hash 342435454, now seen corresponding path program 1 times [2023-08-30 10:06:26,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:06:26,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283393163] [2023-08-30 10:06:26,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:06:26,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:06:26,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:06:26,736 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 10:06:26,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:06:26,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283393163] [2023-08-30 10:06:26,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283393163] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:06:26,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453987086] [2023-08-30 10:06:26,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:06:26,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:06:26,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:06:26,741 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 10:06:26,744 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 10:06:26,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:06:26,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 10:06:26,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:06:26,891 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 10:06:26,892 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:06:26,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [453987086] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:06:26,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:06:26,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 9 [2023-08-30 10:06:26,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359069370] [2023-08-30 10:06:26,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:06:26,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 10:06:26,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:06:26,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 10:06:26,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-08-30 10:06:26,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 302 [2023-08-30 10:06:26,923 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 116 transitions, 1046 flow. Second operand has 5 states, 5 states have (on average 139.2) internal successors, (696), 5 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:26,923 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:06:26,923 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 302 [2023-08-30 10:06:26,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:06:27,741 INFO L130 PetriNetUnfolder]: 5094/8965 cut-off events. [2023-08-30 10:06:27,741 INFO L131 PetriNetUnfolder]: For 32306/32371 co-relation queries the response was YES. [2023-08-30 10:06:27,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34388 conditions, 8965 events. 5094/8965 cut-off events. For 32306/32371 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 63481 event pairs, 1153 based on Foata normal form. 82/8380 useless extension candidates. Maximal degree in co-relation 34352. Up to 2804 conditions per place. [2023-08-30 10:06:27,794 INFO L137 encePairwiseOnDemand]: 290/302 looper letters, 169 selfloop transitions, 64 changer transitions 0/240 dead transitions. [2023-08-30 10:06:27,794 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 240 transitions, 2173 flow [2023-08-30 10:06:27,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 10:06:27,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 10:06:27,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 959 transitions. [2023-08-30 10:06:27,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5292494481236203 [2023-08-30 10:06:27,797 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 959 transitions. [2023-08-30 10:06:27,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 959 transitions. [2023-08-30 10:06:27,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:06:27,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 959 transitions. [2023-08-30 10:06:27,800 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 159.83333333333334) internal successors, (959), 6 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:27,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 302.0) internal successors, (2114), 7 states have internal predecessors, (2114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:27,804 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 302.0) internal successors, (2114), 7 states have internal predecessors, (2114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:27,804 INFO L175 Difference]: Start difference. First operand has 98 places, 116 transitions, 1046 flow. Second operand 6 states and 959 transitions. [2023-08-30 10:06:27,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 240 transitions, 2173 flow [2023-08-30 10:06:27,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 240 transitions, 2141 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:06:27,906 INFO L231 Difference]: Finished difference. Result has 103 places, 137 transitions, 1461 flow [2023-08-30 10:06:27,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=1023, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1461, PETRI_PLACES=103, PETRI_TRANSITIONS=137} [2023-08-30 10:06:27,906 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 48 predicate places. [2023-08-30 10:06:27,907 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 137 transitions, 1461 flow [2023-08-30 10:06:27,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 139.2) internal successors, (696), 5 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:27,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:06:27,914 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 10:06:27,924 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 10:06:28,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:06:28,120 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:06:28,120 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:06:28,120 INFO L85 PathProgramCache]: Analyzing trace with hash -2116252891, now seen corresponding path program 1 times [2023-08-30 10:06:28,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:06:28,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106221237] [2023-08-30 10:06:28,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:06:28,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:06:28,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:06:28,194 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 10:06:28,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:06:28,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106221237] [2023-08-30 10:06:28,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106221237] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:06:28,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:06:28,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:06:28,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802391537] [2023-08-30 10:06:28,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:06:28,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:06:28,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:06:28,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:06:28,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:06:28,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 302 [2023-08-30 10:06:28,225 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 137 transitions, 1461 flow. Second operand has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:28,225 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:06:28,226 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 302 [2023-08-30 10:06:28,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:06:28,923 INFO L130 PetriNetUnfolder]: 4316/8161 cut-off events. [2023-08-30 10:06:28,923 INFO L131 PetriNetUnfolder]: For 38141/38141 co-relation queries the response was YES. [2023-08-30 10:06:28,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33174 conditions, 8161 events. 4316/8161 cut-off events. For 38141/38141 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 59704 event pairs, 1141 based on Foata normal form. 527/7739 useless extension candidates. Maximal degree in co-relation 33135. Up to 4116 conditions per place. [2023-08-30 10:06:28,957 INFO L137 encePairwiseOnDemand]: 289/302 looper letters, 181 selfloop transitions, 27 changer transitions 0/213 dead transitions. [2023-08-30 10:06:28,958 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 213 transitions, 2632 flow [2023-08-30 10:06:28,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:06:28,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:06:28,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 477 transitions. [2023-08-30 10:06:28,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5264900662251656 [2023-08-30 10:06:28,960 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 477 transitions. [2023-08-30 10:06:28,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 477 transitions. [2023-08-30 10:06:28,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:06:28,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 477 transitions. [2023-08-30 10:06:28,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:28,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 302.0) internal successors, (1208), 4 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:28,963 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 302.0) internal successors, (1208), 4 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:28,964 INFO L175 Difference]: Start difference. First operand has 103 places, 137 transitions, 1461 flow. Second operand 3 states and 477 transitions. [2023-08-30 10:06:28,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 213 transitions, 2632 flow [2023-08-30 10:06:29,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 213 transitions, 2592 flow, removed 20 selfloop flow, removed 0 redundant places. [2023-08-30 10:06:29,081 INFO L231 Difference]: Finished difference. Result has 106 places, 155 transitions, 1649 flow [2023-08-30 10:06:29,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=1433, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1649, PETRI_PLACES=106, PETRI_TRANSITIONS=155} [2023-08-30 10:06:29,082 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 51 predicate places. [2023-08-30 10:06:29,082 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 155 transitions, 1649 flow [2023-08-30 10:06:29,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:29,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:06:29,083 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] [2023-08-30 10:06:29,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-30 10:06:29,083 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 10:06:29,083 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:06:29,083 INFO L85 PathProgramCache]: Analyzing trace with hash -179763868, now seen corresponding path program 1 times [2023-08-30 10:06:29,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:06:29,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942958962] [2023-08-30 10:06:29,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:06:29,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:06:29,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:06:29,146 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 10:06:29,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:06:29,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942958962] [2023-08-30 10:06:29,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942958962] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:06:29,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933366452] [2023-08-30 10:06:29,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:06:29,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:06:29,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:06:29,149 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 10:06:29,151 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 10:06:29,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:06:29,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 10:06:29,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:06:29,276 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 10:06:29,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:06:29,342 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 10:06:29,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933366452] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:06:29,343 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:06:29,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-08-30 10:06:29,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310284509] [2023-08-30 10:06:29,344 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:06:29,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 10:06:29,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:06:29,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 10:06:29,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-08-30 10:06:29,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 302 [2023-08-30 10:06:29,428 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 155 transitions, 1649 flow. Second operand has 14 states, 14 states have (on average 132.92857142857142) internal successors, (1861), 14 states have internal predecessors, (1861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:29,428 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:06:29,428 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 302 [2023-08-30 10:06:29,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:06:30,578 INFO L130 PetriNetUnfolder]: 4092/7857 cut-off events. [2023-08-30 10:06:30,578 INFO L131 PetriNetUnfolder]: For 43162/43180 co-relation queries the response was YES. [2023-08-30 10:06:30,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35473 conditions, 7857 events. 4092/7857 cut-off events. For 43162/43180 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 58009 event pairs, 539 based on Foata normal form. 117/7057 useless extension candidates. Maximal degree in co-relation 35432. Up to 2106 conditions per place. [2023-08-30 10:06:30,622 INFO L137 encePairwiseOnDemand]: 289/302 looper letters, 389 selfloop transitions, 98 changer transitions 0/494 dead transitions. [2023-08-30 10:06:30,622 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 494 transitions, 4373 flow [2023-08-30 10:06:30,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-30 10:06:30,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-30 10:06:30,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3456 transitions. [2023-08-30 10:06:30,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4768211920529801 [2023-08-30 10:06:30,632 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3456 transitions. [2023-08-30 10:06:30,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3456 transitions. [2023-08-30 10:06:30,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:06:30,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3456 transitions. [2023-08-30 10:06:30,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 144.0) internal successors, (3456), 24 states have internal predecessors, (3456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:30,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 302.0) internal successors, (7550), 25 states have internal predecessors, (7550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:30,651 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 302.0) internal successors, (7550), 25 states have internal predecessors, (7550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:30,651 INFO L175 Difference]: Start difference. First operand has 106 places, 155 transitions, 1649 flow. Second operand 24 states and 3456 transitions. [2023-08-30 10:06:30,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 494 transitions, 4373 flow [2023-08-30 10:06:30,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 494 transitions, 4114 flow, removed 9 selfloop flow, removed 5 redundant places. [2023-08-30 10:06:30,764 INFO L231 Difference]: Finished difference. Result has 124 places, 170 transitions, 1902 flow [2023-08-30 10:06:30,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=1377, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1902, PETRI_PLACES=124, PETRI_TRANSITIONS=170} [2023-08-30 10:06:30,765 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 69 predicate places. [2023-08-30 10:06:30,765 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 170 transitions, 1902 flow [2023-08-30 10:06:30,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 132.92857142857142) internal successors, (1861), 14 states have internal predecessors, (1861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:30,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:06:30,766 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] [2023-08-30 10:06:30,774 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 10:06:30,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:06:30,966 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:06:30,967 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:06:30,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1178713326, now seen corresponding path program 1 times [2023-08-30 10:06:30,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:06:30,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350794276] [2023-08-30 10:06:30,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:06:30,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:06:30,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:06:31,059 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 10:06:31,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:06:31,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350794276] [2023-08-30 10:06:31,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350794276] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:06:31,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:06:31,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 10:06:31,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611129461] [2023-08-30 10:06:31,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:06:31,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:06:31,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:06:31,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:06:31,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:06:31,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 302 [2023-08-30 10:06:31,121 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 170 transitions, 1902 flow. Second operand has 7 states, 7 states have (on average 134.14285714285714) internal successors, (939), 7 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:31,121 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:06:31,121 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 302 [2023-08-30 10:06:31,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:06:31,929 INFO L130 PetriNetUnfolder]: 3989/7699 cut-off events. [2023-08-30 10:06:31,929 INFO L131 PetriNetUnfolder]: For 41496/41511 co-relation queries the response was YES. [2023-08-30 10:06:31,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34245 conditions, 7699 events. 3989/7699 cut-off events. For 41496/41511 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 56704 event pairs, 985 based on Foata normal form. 75/6875 useless extension candidates. Maximal degree in co-relation 34206. Up to 5423 conditions per place. [2023-08-30 10:06:31,966 INFO L137 encePairwiseOnDemand]: 290/302 looper letters, 257 selfloop transitions, 51 changer transitions 1/316 dead transitions. [2023-08-30 10:06:31,967 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 316 transitions, 3131 flow [2023-08-30 10:06:31,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 10:06:31,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 10:06:31,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1768 transitions. [2023-08-30 10:06:31,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4878587196467991 [2023-08-30 10:06:31,970 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1768 transitions. [2023-08-30 10:06:31,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1768 transitions. [2023-08-30 10:06:31,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:06:31,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1768 transitions. [2023-08-30 10:06:31,973 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 147.33333333333334) internal successors, (1768), 12 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:31,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 302.0) internal successors, (3926), 13 states have internal predecessors, (3926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:31,978 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 302.0) internal successors, (3926), 13 states have internal predecessors, (3926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:31,978 INFO L175 Difference]: Start difference. First operand has 124 places, 170 transitions, 1902 flow. Second operand 12 states and 1768 transitions. [2023-08-30 10:06:31,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 316 transitions, 3131 flow [2023-08-30 10:06:32,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 316 transitions, 2762 flow, removed 77 selfloop flow, removed 15 redundant places. [2023-08-30 10:06:32,131 INFO L231 Difference]: Finished difference. Result has 119 places, 164 transitions, 1548 flow [2023-08-30 10:06:32,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=1388, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1548, PETRI_PLACES=119, PETRI_TRANSITIONS=164} [2023-08-30 10:06:32,131 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 64 predicate places. [2023-08-30 10:06:32,131 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 164 transitions, 1548 flow [2023-08-30 10:06:32,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 134.14285714285714) internal successors, (939), 7 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:32,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:06:32,132 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] [2023-08-30 10:06:32,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-30 10:06:32,132 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:06:32,132 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:06:32,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1219521793, now seen corresponding path program 1 times [2023-08-30 10:06:32,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:06:32,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85639299] [2023-08-30 10:06:32,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:06:32,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:06:32,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:06:32,208 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 10:06:32,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:06:32,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85639299] [2023-08-30 10:06:32,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85639299] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:06:32,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:06:32,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 10:06:32,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413821629] [2023-08-30 10:06:32,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:06:32,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:06:32,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:06:32,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:06:32,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:06:32,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 302 [2023-08-30 10:06:32,262 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 164 transitions, 1548 flow. Second operand has 7 states, 7 states have (on average 134.14285714285714) internal successors, (939), 7 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:32,262 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:06:32,262 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 302 [2023-08-30 10:06:32,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:06:33,077 INFO L130 PetriNetUnfolder]: 4260/8207 cut-off events. [2023-08-30 10:06:33,077 INFO L131 PetriNetUnfolder]: For 29233/29242 co-relation queries the response was YES. [2023-08-30 10:06:33,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33549 conditions, 8207 events. 4260/8207 cut-off events. For 29233/29242 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 60788 event pairs, 957 based on Foata normal form. 97/7314 useless extension candidates. Maximal degree in co-relation 33514. Up to 5422 conditions per place. [2023-08-30 10:06:33,108 INFO L137 encePairwiseOnDemand]: 291/302 looper letters, 270 selfloop transitions, 44 changer transitions 0/321 dead transitions. [2023-08-30 10:06:33,108 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 321 transitions, 3088 flow [2023-08-30 10:06:33,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 10:06:33,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 10:06:33,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1352 transitions. [2023-08-30 10:06:33,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4974245768947756 [2023-08-30 10:06:33,110 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1352 transitions. [2023-08-30 10:06:33,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1352 transitions. [2023-08-30 10:06:33,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:06:33,111 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1352 transitions. [2023-08-30 10:06:33,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 150.22222222222223) internal successors, (1352), 9 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 10:06:33,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 302.0) internal successors, (3020), 10 states have internal predecessors, (3020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:33,116 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 302.0) internal successors, (3020), 10 states have internal predecessors, (3020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:33,116 INFO L175 Difference]: Start difference. First operand has 119 places, 164 transitions, 1548 flow. Second operand 9 states and 1352 transitions. [2023-08-30 10:06:33,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 321 transitions, 3088 flow [2023-08-30 10:06:33,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 321 transitions, 3045 flow, removed 12 selfloop flow, removed 4 redundant places. [2023-08-30 10:06:33,190 INFO L231 Difference]: Finished difference. Result has 124 places, 180 transitions, 1859 flow [2023-08-30 10:06:33,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=1491, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1859, PETRI_PLACES=124, PETRI_TRANSITIONS=180} [2023-08-30 10:06:33,191 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 69 predicate places. [2023-08-30 10:06:33,191 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 180 transitions, 1859 flow [2023-08-30 10:06:33,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 134.14285714285714) internal successors, (939), 7 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:33,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:06:33,191 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] [2023-08-30 10:06:33,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-30 10:06:33,192 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:06:33,192 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:06:33,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1745637153, now seen corresponding path program 1 times [2023-08-30 10:06:33,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:06:33,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100001397] [2023-08-30 10:06:33,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:06:33,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:06:33,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:06:33,263 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 10:06:33,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:06:33,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100001397] [2023-08-30 10:06:33,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100001397] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:06:33,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:06:33,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 10:06:33,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797570477] [2023-08-30 10:06:33,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:06:33,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:06:33,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:06:33,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:06:33,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:06:33,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 302 [2023-08-30 10:06:33,315 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 180 transitions, 1859 flow. Second operand has 7 states, 7 states have (on average 134.28571428571428) internal successors, (940), 7 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:33,316 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:06:33,316 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 302 [2023-08-30 10:06:33,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:06:34,244 INFO L130 PetriNetUnfolder]: 4290/8261 cut-off events. [2023-08-30 10:06:34,244 INFO L131 PetriNetUnfolder]: For 34337/34355 co-relation queries the response was YES. [2023-08-30 10:06:34,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34611 conditions, 8261 events. 4290/8261 cut-off events. For 34337/34355 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 60957 event pairs, 1091 based on Foata normal form. 79/7346 useless extension candidates. Maximal degree in co-relation 34574. Up to 6036 conditions per place. [2023-08-30 10:06:34,310 INFO L137 encePairwiseOnDemand]: 290/302 looper letters, 259 selfloop transitions, 41 changer transitions 0/307 dead transitions. [2023-08-30 10:06:34,311 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 307 transitions, 2999 flow [2023-08-30 10:06:34,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 10:06:34,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 10:06:34,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1486 transitions. [2023-08-30 10:06:34,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49205298013245036 [2023-08-30 10:06:34,314 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1486 transitions. [2023-08-30 10:06:34,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1486 transitions. [2023-08-30 10:06:34,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:06:34,317 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1486 transitions. [2023-08-30 10:06:34,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 148.6) internal successors, (1486), 10 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:34,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 302.0) internal successors, (3322), 11 states have internal predecessors, (3322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:34,322 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 302.0) internal successors, (3322), 11 states have internal predecessors, (3322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:34,322 INFO L175 Difference]: Start difference. First operand has 124 places, 180 transitions, 1859 flow. Second operand 10 states and 1486 transitions. [2023-08-30 10:06:34,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 307 transitions, 2999 flow [2023-08-30 10:06:34,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 307 transitions, 2866 flow, removed 11 selfloop flow, removed 8 redundant places. [2023-08-30 10:06:34,428 INFO L231 Difference]: Finished difference. Result has 126 places, 176 transitions, 1784 flow [2023-08-30 10:06:34,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=1619, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1784, PETRI_PLACES=126, PETRI_TRANSITIONS=176} [2023-08-30 10:06:34,429 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 71 predicate places. [2023-08-30 10:06:34,429 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 176 transitions, 1784 flow [2023-08-30 10:06:34,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 134.28571428571428) internal successors, (940), 7 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:34,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:06:34,430 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] [2023-08-30 10:06:34,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-30 10:06:34,430 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:06:34,430 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:06:34,431 INFO L85 PathProgramCache]: Analyzing trace with hash -2099550004, now seen corresponding path program 1 times [2023-08-30 10:06:34,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:06:34,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808865351] [2023-08-30 10:06:34,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:06:34,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:06:34,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:06:34,500 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 10:06:34,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:06:34,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808865351] [2023-08-30 10:06:34,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808865351] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:06:34,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:06:34,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 10:06:34,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041911079] [2023-08-30 10:06:34,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:06:34,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:06:34,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:06:34,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:06:34,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:06:34,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 302 [2023-08-30 10:06:34,549 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 176 transitions, 1784 flow. Second operand has 7 states, 7 states have (on average 134.14285714285714) internal successors, (939), 7 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:34,549 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:06:34,549 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 302 [2023-08-30 10:06:34,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:06:35,536 INFO L130 PetriNetUnfolder]: 4176/8045 cut-off events. [2023-08-30 10:06:35,536 INFO L131 PetriNetUnfolder]: For 31952/31961 co-relation queries the response was YES. [2023-08-30 10:06:35,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33392 conditions, 8045 events. 4176/8045 cut-off events. For 31952/31961 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 59250 event pairs, 902 based on Foata normal form. 97/7168 useless extension candidates. Maximal degree in co-relation 33356. Up to 5139 conditions per place. [2023-08-30 10:06:35,578 INFO L137 encePairwiseOnDemand]: 291/302 looper letters, 272 selfloop transitions, 45 changer transitions 1/325 dead transitions. [2023-08-30 10:06:35,578 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 325 transitions, 3145 flow [2023-08-30 10:06:35,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 10:06:35,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 10:06:35,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1493 transitions. [2023-08-30 10:06:35,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4943708609271523 [2023-08-30 10:06:35,580 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1493 transitions. [2023-08-30 10:06:35,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1493 transitions. [2023-08-30 10:06:35,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:06:35,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1493 transitions. [2023-08-30 10:06:35,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 149.3) internal successors, (1493), 10 states have internal predecessors, (1493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:35,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 302.0) internal successors, (3322), 11 states have internal predecessors, (3322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:35,585 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 302.0) internal successors, (3322), 11 states have internal predecessors, (3322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:35,586 INFO L175 Difference]: Start difference. First operand has 126 places, 176 transitions, 1784 flow. Second operand 10 states and 1493 transitions. [2023-08-30 10:06:35,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 325 transitions, 3145 flow [2023-08-30 10:06:35,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 325 transitions, 3038 flow, removed 7 selfloop flow, removed 7 redundant places. [2023-08-30 10:06:35,689 INFO L231 Difference]: Finished difference. Result has 127 places, 174 transitions, 1740 flow [2023-08-30 10:06:35,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=1650, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1740, PETRI_PLACES=127, PETRI_TRANSITIONS=174} [2023-08-30 10:06:35,690 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 72 predicate places. [2023-08-30 10:06:35,690 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 174 transitions, 1740 flow [2023-08-30 10:06:35,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 134.14285714285714) internal successors, (939), 7 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:35,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:06:35,690 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 10:06:35,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-30 10:06:35,690 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 10:06:35,691 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:06:35,691 INFO L85 PathProgramCache]: Analyzing trace with hash 612767395, now seen corresponding path program 1 times [2023-08-30 10:06:35,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:06:35,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944081630] [2023-08-30 10:06:35,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:06:35,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:06:35,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:06:35,800 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 10:06:35,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:06:35,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944081630] [2023-08-30 10:06:35,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944081630] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:06:35,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:06:35,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 10:06:35,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345485162] [2023-08-30 10:06:35,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:06:35,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 10:06:35,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:06:35,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 10:06:35,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-08-30 10:06:35,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 302 [2023-08-30 10:06:35,888 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 174 transitions, 1740 flow. Second operand has 8 states, 8 states have (on average 130.375) internal successors, (1043), 8 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:35,888 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:06:35,888 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 302 [2023-08-30 10:06:35,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:06:36,994 INFO L130 PetriNetUnfolder]: 4379/8510 cut-off events. [2023-08-30 10:06:36,994 INFO L131 PetriNetUnfolder]: For 30865/30880 co-relation queries the response was YES. [2023-08-30 10:06:37,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34954 conditions, 8510 events. 4379/8510 cut-off events. For 30865/30880 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 63669 event pairs, 1101 based on Foata normal form. 49/7496 useless extension candidates. Maximal degree in co-relation 34918. Up to 5927 conditions per place. [2023-08-30 10:06:37,040 INFO L137 encePairwiseOnDemand]: 291/302 looper letters, 283 selfloop transitions, 45 changer transitions 1/336 dead transitions. [2023-08-30 10:06:37,040 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 336 transitions, 3173 flow [2023-08-30 10:06:37,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 10:06:37,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 10:06:37,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1726 transitions. [2023-08-30 10:06:37,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4762693156732892 [2023-08-30 10:06:37,042 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1726 transitions. [2023-08-30 10:06:37,042 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1726 transitions. [2023-08-30 10:06:37,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:06:37,043 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1726 transitions. [2023-08-30 10:06:37,044 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 143.83333333333334) internal successors, (1726), 12 states have internal predecessors, (1726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:37,047 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 302.0) internal successors, (3926), 13 states have internal predecessors, (3926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:37,048 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 302.0) internal successors, (3926), 13 states have internal predecessors, (3926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:37,048 INFO L175 Difference]: Start difference. First operand has 127 places, 174 transitions, 1740 flow. Second operand 12 states and 1726 transitions. [2023-08-30 10:06:37,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 336 transitions, 3173 flow [2023-08-30 10:06:37,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 336 transitions, 3056 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-08-30 10:06:37,167 INFO L231 Difference]: Finished difference. Result has 133 places, 180 transitions, 1842 flow [2023-08-30 10:06:37,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=1634, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1842, PETRI_PLACES=133, PETRI_TRANSITIONS=180} [2023-08-30 10:06:37,168 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 78 predicate places. [2023-08-30 10:06:37,168 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 180 transitions, 1842 flow [2023-08-30 10:06:37,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 130.375) internal successors, (1043), 8 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:37,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:06:37,168 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] [2023-08-30 10:06:37,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-08-30 10:06:37,168 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:06:37,169 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:06:37,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1932472449, now seen corresponding path program 1 times [2023-08-30 10:06:37,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:06:37,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588763408] [2023-08-30 10:06:37,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:06:37,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:06:37,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:06:37,236 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 10:06:37,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:06:37,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588763408] [2023-08-30 10:06:37,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588763408] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:06:37,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:06:37,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:06:37,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925264546] [2023-08-30 10:06:37,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:06:37,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:06:37,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:06:37,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:06:37,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:06:37,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 302 [2023-08-30 10:06:37,245 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 180 transitions, 1842 flow. Second operand has 3 states, 3 states have (on average 148.0) internal successors, (444), 3 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:37,246 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:06:37,246 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 302 [2023-08-30 10:06:37,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:06:37,782 INFO L130 PetriNetUnfolder]: 3146/6351 cut-off events. [2023-08-30 10:06:37,782 INFO L131 PetriNetUnfolder]: For 23588/23592 co-relation queries the response was YES. [2023-08-30 10:06:37,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26477 conditions, 6351 events. 3146/6351 cut-off events. For 23588/23592 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 46342 event pairs, 1594 based on Foata normal form. 0/6134 useless extension candidates. Maximal degree in co-relation 26438. Up to 3092 conditions per place. [2023-08-30 10:06:37,813 INFO L137 encePairwiseOnDemand]: 297/302 looper letters, 257 selfloop transitions, 5 changer transitions 1/270 dead transitions. [2023-08-30 10:06:37,813 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 270 transitions, 3296 flow [2023-08-30 10:06:37,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:06:37,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:06:37,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 489 transitions. [2023-08-30 10:06:37,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5397350993377483 [2023-08-30 10:06:37,814 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 489 transitions. [2023-08-30 10:06:37,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 489 transitions. [2023-08-30 10:06:37,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:06:37,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 489 transitions. [2023-08-30 10:06:37,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:37,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 302.0) internal successors, (1208), 4 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:37,817 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 302.0) internal successors, (1208), 4 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:37,817 INFO L175 Difference]: Start difference. First operand has 133 places, 180 transitions, 1842 flow. Second operand 3 states and 489 transitions. [2023-08-30 10:06:37,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 270 transitions, 3296 flow [2023-08-30 10:06:37,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 270 transitions, 3174 flow, removed 17 selfloop flow, removed 8 redundant places. [2023-08-30 10:06:37,915 INFO L231 Difference]: Finished difference. Result has 128 places, 180 transitions, 1783 flow [2023-08-30 10:06:37,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=1762, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1783, PETRI_PLACES=128, PETRI_TRANSITIONS=180} [2023-08-30 10:06:37,916 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 73 predicate places. [2023-08-30 10:06:37,916 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 180 transitions, 1783 flow [2023-08-30 10:06:37,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.0) internal successors, (444), 3 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:37,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:06:37,917 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 10:06:37,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-08-30 10:06:37,917 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:06:37,917 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:06:37,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1022468195, now seen corresponding path program 2 times [2023-08-30 10:06:37,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:06:37,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600624697] [2023-08-30 10:06:37,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:06:37,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:06:37,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:06:38,018 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 10:06:38,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:06:38,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600624697] [2023-08-30 10:06:38,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600624697] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:06:38,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878513756] [2023-08-30 10:06:38,020 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 10:06:38,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:06:38,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:06:38,021 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 10:06:38,024 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 10:06:38,106 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 10:06:38,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:06:38,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 10:06:38,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:06:38,157 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 10:06:38,158 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:06:38,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878513756] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:06:38,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:06:38,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2023-08-30 10:06:38,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137890303] [2023-08-30 10:06:38,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:06:38,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 10:06:38,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:06:38,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 10:06:38,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-08-30 10:06:38,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 302 [2023-08-30 10:06:38,201 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 180 transitions, 1783 flow. Second operand has 6 states, 6 states have (on average 134.16666666666666) internal successors, (805), 6 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:38,201 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:06:38,201 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 302 [2023-08-30 10:06:38,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:06:38,993 INFO L130 PetriNetUnfolder]: 3092/6214 cut-off events. [2023-08-30 10:06:38,993 INFO L131 PetriNetUnfolder]: For 21775/21787 co-relation queries the response was YES. [2023-08-30 10:06:39,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26192 conditions, 6214 events. 3092/6214 cut-off events. For 21775/21787 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 45342 event pairs, 627 based on Foata normal form. 41/6224 useless extension candidates. Maximal degree in co-relation 26153. Up to 2366 conditions per place. [2023-08-30 10:06:39,028 INFO L137 encePairwiseOnDemand]: 292/302 looper letters, 205 selfloop transitions, 89 changer transitions 3/304 dead transitions. [2023-08-30 10:06:39,028 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 304 transitions, 3079 flow [2023-08-30 10:06:39,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 10:06:39,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 10:06:39,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1321 transitions. [2023-08-30 10:06:39,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48601913171449596 [2023-08-30 10:06:39,030 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1321 transitions. [2023-08-30 10:06:39,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1321 transitions. [2023-08-30 10:06:39,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:06:39,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1321 transitions. [2023-08-30 10:06:39,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 146.77777777777777) internal successors, (1321), 9 states have internal predecessors, (1321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:39,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 302.0) internal successors, (3020), 10 states have internal predecessors, (3020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:39,033 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 302.0) internal successors, (3020), 10 states have internal predecessors, (3020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:39,033 INFO L175 Difference]: Start difference. First operand has 128 places, 180 transitions, 1783 flow. Second operand 9 states and 1321 transitions. [2023-08-30 10:06:39,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 304 transitions, 3079 flow [2023-08-30 10:06:39,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 304 transitions, 3053 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:06:39,101 INFO L231 Difference]: Finished difference. Result has 135 places, 183 transitions, 1977 flow [2023-08-30 10:06:39,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=1768, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1977, PETRI_PLACES=135, PETRI_TRANSITIONS=183} [2023-08-30 10:06:39,102 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 80 predicate places. [2023-08-30 10:06:39,102 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 183 transitions, 1977 flow [2023-08-30 10:06:39,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 134.16666666666666) internal successors, (805), 6 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:39,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:06:39,103 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 10:06:39,107 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 10:06:39,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-08-30 10:06:39,303 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 10:06:39,303 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:06:39,304 INFO L85 PathProgramCache]: Analyzing trace with hash 558586019, now seen corresponding path program 3 times [2023-08-30 10:06:39,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:06:39,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688294102] [2023-08-30 10:06:39,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:06:39,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:06:39,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:06:39,392 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 10:06:39,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:06:39,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688294102] [2023-08-30 10:06:39,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688294102] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:06:39,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670537503] [2023-08-30 10:06:39,393 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 10:06:39,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:06:39,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:06:39,397 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 10:06:39,422 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 10:06:39,498 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-30 10:06:39,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:06:39,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 10:06:39,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:06:39,549 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 10:06:39,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:06:39,638 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 10:06:39,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670537503] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:06:39,638 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:06:39,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2023-08-30 10:06:39,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918038141] [2023-08-30 10:06:39,639 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:06:39,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 10:06:39,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:06:39,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 10:06:39,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2023-08-30 10:06:39,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 302 [2023-08-30 10:06:39,759 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 183 transitions, 1977 flow. Second operand has 16 states, 16 states have (on average 131.0625) internal successors, (2097), 16 states have internal predecessors, (2097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:39,760 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:06:39,760 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 302 [2023-08-30 10:06:39,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:06:41,112 INFO L130 PetriNetUnfolder]: 3184/6482 cut-off events. [2023-08-30 10:06:41,113 INFO L131 PetriNetUnfolder]: For 25469/25486 co-relation queries the response was YES. [2023-08-30 10:06:41,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28171 conditions, 6482 events. 3184/6482 cut-off events. For 25469/25486 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 47847 event pairs, 418 based on Foata normal form. 80/6531 useless extension candidates. Maximal degree in co-relation 28131. Up to 1988 conditions per place. [2023-08-30 10:06:41,145 INFO L137 encePairwiseOnDemand]: 290/302 looper letters, 387 selfloop transitions, 111 changer transitions 12/517 dead transitions. [2023-08-30 10:06:41,145 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 517 transitions, 4741 flow [2023-08-30 10:06:41,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-08-30 10:06:41,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-08-30 10:06:41,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 4446 transitions. [2023-08-30 10:06:41,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4600579470198676 [2023-08-30 10:06:41,148 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 4446 transitions. [2023-08-30 10:06:41,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 4446 transitions. [2023-08-30 10:06:41,149 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:06:41,149 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 4446 transitions. [2023-08-30 10:06:41,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 138.9375) internal successors, (4446), 32 states have internal predecessors, (4446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:41,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 302.0) internal successors, (9966), 33 states have internal predecessors, (9966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:41,159 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 302.0) internal successors, (9966), 33 states have internal predecessors, (9966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:41,159 INFO L175 Difference]: Start difference. First operand has 135 places, 183 transitions, 1977 flow. Second operand 32 states and 4446 transitions. [2023-08-30 10:06:41,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 517 transitions, 4741 flow [2023-08-30 10:06:41,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 517 transitions, 4702 flow, removed 17 selfloop flow, removed 1 redundant places. [2023-08-30 10:06:41,236 INFO L231 Difference]: Finished difference. Result has 164 places, 186 transitions, 2215 flow [2023-08-30 10:06:41,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=1912, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=2215, PETRI_PLACES=164, PETRI_TRANSITIONS=186} [2023-08-30 10:06:41,236 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 109 predicate places. [2023-08-30 10:06:41,237 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 186 transitions, 2215 flow [2023-08-30 10:06:41,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 131.0625) internal successors, (2097), 16 states have internal predecessors, (2097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:41,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:06:41,237 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 10:06:41,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 10:06:41,442 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,SelfDestructingSolverStorable28 [2023-08-30 10:06:41,443 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:06:41,443 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:06:41,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1513775453, now seen corresponding path program 1 times [2023-08-30 10:06:41,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:06:41,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189222866] [2023-08-30 10:06:41,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:06:41,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:06:41,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:06:41,520 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 10:06:41,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:06:41,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189222866] [2023-08-30 10:06:41,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189222866] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:06:41,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:06:41,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 10:06:41,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016285566] [2023-08-30 10:06:41,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:06:41,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 10:06:41,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:06:41,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 10:06:41,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-30 10:06:41,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 302 [2023-08-30 10:06:41,574 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 186 transitions, 2215 flow. Second operand has 8 states, 8 states have (on average 130.375) internal successors, (1043), 8 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:41,575 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:06:41,575 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 302 [2023-08-30 10:06:41,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:06:42,465 INFO L130 PetriNetUnfolder]: 3376/6838 cut-off events. [2023-08-30 10:06:42,466 INFO L131 PetriNetUnfolder]: For 33997/34004 co-relation queries the response was YES. [2023-08-30 10:06:42,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31354 conditions, 6838 events. 3376/6838 cut-off events. For 33997/34004 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 50743 event pairs, 630 based on Foata normal form. 37/6845 useless extension candidates. Maximal degree in co-relation 31311. Up to 3582 conditions per place. [2023-08-30 10:06:42,503 INFO L137 encePairwiseOnDemand]: 291/302 looper letters, 257 selfloop transitions, 99 changer transitions 4/367 dead transitions. [2023-08-30 10:06:42,503 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 367 transitions, 4018 flow [2023-08-30 10:06:42,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-30 10:06:42,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-30 10:06:42,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2509 transitions. [2023-08-30 10:06:42,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4615526122148639 [2023-08-30 10:06:42,505 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2509 transitions. [2023-08-30 10:06:42,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2509 transitions. [2023-08-30 10:06:42,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:06:42,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2509 transitions. [2023-08-30 10:06:42,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 139.38888888888889) internal successors, (2509), 18 states have internal predecessors, (2509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:42,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 302.0) internal successors, (5738), 19 states have internal predecessors, (5738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:42,511 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 302.0) internal successors, (5738), 19 states have internal predecessors, (5738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:42,511 INFO L175 Difference]: Start difference. First operand has 164 places, 186 transitions, 2215 flow. Second operand 18 states and 2509 transitions. [2023-08-30 10:06:42,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 367 transitions, 4018 flow [2023-08-30 10:06:42,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 367 transitions, 3674 flow, removed 32 selfloop flow, removed 28 redundant places. [2023-08-30 10:06:42,659 INFO L231 Difference]: Finished difference. Result has 155 places, 200 transitions, 2303 flow [2023-08-30 10:06:42,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=1907, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2303, PETRI_PLACES=155, PETRI_TRANSITIONS=200} [2023-08-30 10:06:42,660 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 100 predicate places. [2023-08-30 10:06:42,660 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 200 transitions, 2303 flow [2023-08-30 10:06:42,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 130.375) internal successors, (1043), 8 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:42,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:06:42,661 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 10:06:42,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-08-30 10:06:42,661 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 10:06:42,661 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:06:42,661 INFO L85 PathProgramCache]: Analyzing trace with hash -292937606, now seen corresponding path program 1 times [2023-08-30 10:06:42,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:06:42,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368913486] [2023-08-30 10:06:42,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:06:42,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:06:42,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:06:42,744 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 10:06:42,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:06:42,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368913486] [2023-08-30 10:06:42,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368913486] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:06:42,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:06:42,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 10:06:42,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128864329] [2023-08-30 10:06:42,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:06:42,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 10:06:42,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:06:42,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 10:06:42,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-08-30 10:06:42,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 302 [2023-08-30 10:06:42,818 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 200 transitions, 2303 flow. Second operand has 8 states, 8 states have (on average 130.375) internal successors, (1043), 8 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:42,818 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:06:42,818 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 302 [2023-08-30 10:06:42,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:06:43,777 INFO L130 PetriNetUnfolder]: 3375/6945 cut-off events. [2023-08-30 10:06:43,777 INFO L131 PetriNetUnfolder]: For 34480/34492 co-relation queries the response was YES. [2023-08-30 10:06:43,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31115 conditions, 6945 events. 3375/6945 cut-off events. For 34480/34492 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 52203 event pairs, 965 based on Foata normal form. 40/6953 useless extension candidates. Maximal degree in co-relation 31073. Up to 5073 conditions per place. [2023-08-30 10:06:43,817 INFO L137 encePairwiseOnDemand]: 291/302 looper letters, 276 selfloop transitions, 51 changer transitions 4/338 dead transitions. [2023-08-30 10:06:43,817 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 338 transitions, 3718 flow [2023-08-30 10:06:43,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 10:06:43,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 10:06:43,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1840 transitions. [2023-08-30 10:06:43,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4686704024452369 [2023-08-30 10:06:43,819 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1840 transitions. [2023-08-30 10:06:43,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1840 transitions. [2023-08-30 10:06:43,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:06:43,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1840 transitions. [2023-08-30 10:06:43,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 141.53846153846155) internal successors, (1840), 13 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:43,825 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 302.0) internal successors, (4228), 14 states have internal predecessors, (4228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:43,825 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 302.0) internal successors, (4228), 14 states have internal predecessors, (4228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:43,825 INFO L175 Difference]: Start difference. First operand has 155 places, 200 transitions, 2303 flow. Second operand 13 states and 1840 transitions. [2023-08-30 10:06:43,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 338 transitions, 3718 flow [2023-08-30 10:06:43,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 338 transitions, 3667 flow, removed 7 selfloop flow, removed 7 redundant places. [2023-08-30 10:06:43,976 INFO L231 Difference]: Finished difference. Result has 160 places, 206 transitions, 2420 flow [2023-08-30 10:06:43,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=2236, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2420, PETRI_PLACES=160, PETRI_TRANSITIONS=206} [2023-08-30 10:06:43,977 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 105 predicate places. [2023-08-30 10:06:43,977 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 206 transitions, 2420 flow [2023-08-30 10:06:43,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 130.375) internal successors, (1043), 8 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:43,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:06:43,977 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 10:06:43,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-08-30 10:06:43,979 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 10:06:43,979 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:06:43,979 INFO L85 PathProgramCache]: Analyzing trace with hash -347118982, now seen corresponding path program 2 times [2023-08-30 10:06:43,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:06:43,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089065411] [2023-08-30 10:06:43,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:06:43,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:06:43,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:06:44,060 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 10:06:44,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:06:44,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089065411] [2023-08-30 10:06:44,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089065411] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:06:44,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426453] [2023-08-30 10:06:44,061 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 10:06:44,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:06:44,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:06:44,065 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 10:06:44,076 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 10:06:44,158 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 10:06:44,159 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:06:44,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 10:06:44,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:06:44,214 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 10:06:44,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:06:44,285 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 10:06:44,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426453] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:06:44,286 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:06:44,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2023-08-30 10:06:44,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679012863] [2023-08-30 10:06:44,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:06:44,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 10:06:44,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:06:44,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 10:06:44,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2023-08-30 10:06:44,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 302 [2023-08-30 10:06:44,408 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 206 transitions, 2420 flow. Second operand has 16 states, 16 states have (on average 131.0625) internal successors, (2097), 16 states have internal predecessors, (2097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:44,408 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:06:44,408 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 302 [2023-08-30 10:06:44,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:06:45,706 INFO L130 PetriNetUnfolder]: 3408/6976 cut-off events. [2023-08-30 10:06:45,709 INFO L131 PetriNetUnfolder]: For 33784/33792 co-relation queries the response was YES. [2023-08-30 10:06:45,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31674 conditions, 6976 events. 3408/6976 cut-off events. For 33784/33792 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 52367 event pairs, 515 based on Foata normal form. 90/7033 useless extension candidates. Maximal degree in co-relation 31631. Up to 2617 conditions per place. [2023-08-30 10:06:45,747 INFO L137 encePairwiseOnDemand]: 290/302 looper letters, 343 selfloop transitions, 139 changer transitions 15/504 dead transitions. [2023-08-30 10:06:45,747 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 504 transitions, 5024 flow [2023-08-30 10:06:45,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-08-30 10:06:45,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2023-08-30 10:06:45,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 4686 transitions. [2023-08-30 10:06:45,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4563693026879626 [2023-08-30 10:06:45,753 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 4686 transitions. [2023-08-30 10:06:45,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 4686 transitions. [2023-08-30 10:06:45,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:06:45,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 4686 transitions. [2023-08-30 10:06:45,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 137.8235294117647) internal successors, (4686), 34 states have internal predecessors, (4686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:45,765 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 302.0) internal successors, (10570), 35 states have internal predecessors, (10570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:45,766 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 302.0) internal successors, (10570), 35 states have internal predecessors, (10570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:45,766 INFO L175 Difference]: Start difference. First operand has 160 places, 206 transitions, 2420 flow. Second operand 34 states and 4686 transitions. [2023-08-30 10:06:45,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 504 transitions, 5024 flow [2023-08-30 10:06:45,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 504 transitions, 4819 flow, removed 12 selfloop flow, removed 11 redundant places. [2023-08-30 10:06:45,920 INFO L231 Difference]: Finished difference. Result has 181 places, 215 transitions, 2661 flow [2023-08-30 10:06:45,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=2199, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=2661, PETRI_PLACES=181, PETRI_TRANSITIONS=215} [2023-08-30 10:06:45,920 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 126 predicate places. [2023-08-30 10:06:45,921 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 215 transitions, 2661 flow [2023-08-30 10:06:45,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 131.0625) internal successors, (2097), 16 states have internal predecessors, (2097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:45,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:06:45,921 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 10:06:45,926 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 10:06:46,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:06:46,122 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:06:46,122 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:06:46,122 INFO L85 PathProgramCache]: Analyzing trace with hash -292937537, now seen corresponding path program 2 times [2023-08-30 10:06:46,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:06:46,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886501601] [2023-08-30 10:06:46,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:06:46,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:06:46,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:06:46,205 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 10:06:46,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:06:46,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886501601] [2023-08-30 10:06:46,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886501601] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:06:46,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:06:46,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 10:06:46,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653901253] [2023-08-30 10:06:46,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:06:46,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 10:06:46,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:06:46,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 10:06:46,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-30 10:06:46,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 302 [2023-08-30 10:06:46,279 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 215 transitions, 2661 flow. Second operand has 8 states, 8 states have (on average 130.375) internal successors, (1043), 8 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:46,279 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:06:46,279 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 302 [2023-08-30 10:06:46,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:06:47,136 INFO L130 PetriNetUnfolder]: 3371/6926 cut-off events. [2023-08-30 10:06:47,136 INFO L131 PetriNetUnfolder]: For 31347/31357 co-relation queries the response was YES. [2023-08-30 10:06:47,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31650 conditions, 6926 events. 3371/6926 cut-off events. For 31347/31357 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 51969 event pairs, 756 based on Foata normal form. 39/6931 useless extension candidates. Maximal degree in co-relation 31612. Up to 3314 conditions per place. [2023-08-30 10:06:47,169 INFO L137 encePairwiseOnDemand]: 292/302 looper letters, 266 selfloop transitions, 115 changer transitions 15/402 dead transitions. [2023-08-30 10:06:47,170 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 402 transitions, 4414 flow [2023-08-30 10:06:47,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-30 10:06:47,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-30 10:06:47,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2649 transitions. [2023-08-30 10:06:47,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4616591146741025 [2023-08-30 10:06:47,172 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2649 transitions. [2023-08-30 10:06:47,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2649 transitions. [2023-08-30 10:06:47,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:06:47,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2649 transitions. [2023-08-30 10:06:47,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 139.42105263157896) internal successors, (2649), 19 states have internal predecessors, (2649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:47,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 302.0) internal successors, (6040), 20 states have internal predecessors, (6040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:47,180 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 302.0) internal successors, (6040), 20 states have internal predecessors, (6040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:47,180 INFO L175 Difference]: Start difference. First operand has 181 places, 215 transitions, 2661 flow. Second operand 19 states and 2649 transitions. [2023-08-30 10:06:47,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 402 transitions, 4414 flow [2023-08-30 10:06:47,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 402 transitions, 3989 flow, removed 14 selfloop flow, removed 35 redundant places. [2023-08-30 10:06:47,335 INFO L231 Difference]: Finished difference. Result has 163 places, 212 transitions, 2438 flow [2023-08-30 10:06:47,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=2218, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2438, PETRI_PLACES=163, PETRI_TRANSITIONS=212} [2023-08-30 10:06:47,336 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 108 predicate places. [2023-08-30 10:06:47,336 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 212 transitions, 2438 flow [2023-08-30 10:06:47,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 130.375) internal successors, (1043), 8 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:47,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:06:47,337 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:06:47,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-08-30 10:06:47,337 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:06:47,337 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:06:47,338 INFO L85 PathProgramCache]: Analyzing trace with hash 768330032, now seen corresponding path program 1 times [2023-08-30 10:06:47,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:06:47,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473232798] [2023-08-30 10:06:47,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:06:47,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:06:47,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:06:47,384 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 10:06:47,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:06:47,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473232798] [2023-08-30 10:06:47,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473232798] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:06:47,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:06:47,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:06:47,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025267832] [2023-08-30 10:06:47,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:06:47,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:06:47,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:06:47,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:06:47,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:06:47,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 302 [2023-08-30 10:06:47,394 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 212 transitions, 2438 flow. Second operand has 3 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:47,395 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:06:47,395 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 302 [2023-08-30 10:06:47,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:06:47,918 INFO L130 PetriNetUnfolder]: 3216/6576 cut-off events. [2023-08-30 10:06:47,918 INFO L131 PetriNetUnfolder]: For 26792/26796 co-relation queries the response was YES. [2023-08-30 10:06:47,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29131 conditions, 6576 events. 3216/6576 cut-off events. For 26792/26796 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 49144 event pairs, 1705 based on Foata normal form. 0/6520 useless extension candidates. Maximal degree in co-relation 29097. Up to 4218 conditions per place. [2023-08-30 10:06:47,954 INFO L137 encePairwiseOnDemand]: 300/302 looper letters, 265 selfloop transitions, 4 changer transitions 0/275 dead transitions. [2023-08-30 10:06:47,954 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 275 transitions, 3638 flow [2023-08-30 10:06:47,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:06:47,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:06:47,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 475 transitions. [2023-08-30 10:06:47,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5242825607064018 [2023-08-30 10:06:47,957 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 475 transitions. [2023-08-30 10:06:47,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 475 transitions. [2023-08-30 10:06:47,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:06:47,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 475 transitions. [2023-08-30 10:06:47,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:47,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 302.0) internal successors, (1208), 4 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:47,959 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 302.0) internal successors, (1208), 4 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:47,959 INFO L175 Difference]: Start difference. First operand has 163 places, 212 transitions, 2438 flow. Second operand 3 states and 475 transitions. [2023-08-30 10:06:47,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 275 transitions, 3638 flow [2023-08-30 10:06:48,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 275 transitions, 3512 flow, removed 1 selfloop flow, removed 14 redundant places. [2023-08-30 10:06:48,063 INFO L231 Difference]: Finished difference. Result has 148 places, 211 transitions, 2331 flow [2023-08-30 10:06:48,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=2323, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2331, PETRI_PLACES=148, PETRI_TRANSITIONS=211} [2023-08-30 10:06:48,064 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 93 predicate places. [2023-08-30 10:06:48,064 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 211 transitions, 2331 flow [2023-08-30 10:06:48,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:48,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:06:48,064 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:06:48,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-08-30 10:06:48,064 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:06:48,064 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:06:48,065 INFO L85 PathProgramCache]: Analyzing trace with hash -852189385, now seen corresponding path program 1 times [2023-08-30 10:06:48,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:06:48,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357822872] [2023-08-30 10:06:48,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:06:48,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:06:48,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:06:48,103 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-30 10:06:48,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:06:48,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357822872] [2023-08-30 10:06:48,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357822872] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:06:48,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:06:48,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:06:48,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919129490] [2023-08-30 10:06:48,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:06:48,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:06:48,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:06:48,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:06:48,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:06:48,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 302 [2023-08-30 10:06:48,112 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 211 transitions, 2331 flow. Second operand has 3 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:48,113 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:06:48,113 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 302 [2023-08-30 10:06:48,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:06:48,761 INFO L130 PetriNetUnfolder]: 3216/6568 cut-off events. [2023-08-30 10:06:48,761 INFO L131 PetriNetUnfolder]: For 26237/26241 co-relation queries the response was YES. [2023-08-30 10:06:48,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28799 conditions, 6568 events. 3216/6568 cut-off events. For 26237/26241 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 48987 event pairs, 1569 based on Foata normal form. 11/6523 useless extension candidates. Maximal degree in co-relation 28766. Up to 3850 conditions per place. [2023-08-30 10:06:48,779 INFO L137 encePairwiseOnDemand]: 298/302 looper letters, 0 selfloop transitions, 0 changer transitions 303/303 dead transitions. [2023-08-30 10:06:48,780 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 303 transitions, 4044 flow [2023-08-30 10:06:48,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:06:48,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:06:48,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 472 transitions. [2023-08-30 10:06:48,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5209713024282561 [2023-08-30 10:06:48,781 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 472 transitions. [2023-08-30 10:06:48,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 472 transitions. [2023-08-30 10:06:48,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:06:48,781 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 472 transitions. [2023-08-30 10:06:48,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:48,782 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 302.0) internal successors, (1208), 4 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:48,782 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 302.0) internal successors, (1208), 4 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:48,782 INFO L175 Difference]: Start difference. First operand has 148 places, 211 transitions, 2331 flow. Second operand 3 states and 472 transitions. [2023-08-30 10:06:48,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 303 transitions, 4044 flow [2023-08-30 10:06:48,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 303 transitions, 4035 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:06:48,874 INFO L231 Difference]: Finished difference. Result has 147 places, 0 transitions, 0 flow [2023-08-30 10:06:48,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=2318, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=147, PETRI_TRANSITIONS=0} [2023-08-30 10:06:48,875 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 92 predicate places. [2023-08-30 10:06:48,875 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 0 transitions, 0 flow [2023-08-30 10:06:48,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:48,876 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 16 remaining) [2023-08-30 10:06:48,876 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 16 remaining) [2023-08-30 10:06:48,876 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 16 remaining) [2023-08-30 10:06:48,876 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 16 remaining) [2023-08-30 10:06:48,876 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 16 remaining) [2023-08-30 10:06:48,876 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 16 remaining) [2023-08-30 10:06:48,877 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 16 remaining) [2023-08-30 10:06:48,877 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 16 remaining) [2023-08-30 10:06:48,877 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 16 remaining) [2023-08-30 10:06:48,877 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 16 remaining) [2023-08-30 10:06:48,877 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 16 remaining) [2023-08-30 10:06:48,877 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 16 remaining) [2023-08-30 10:06:48,877 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 16 remaining) [2023-08-30 10:06:48,878 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 16 remaining) [2023-08-30 10:06:48,878 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 16 remaining) [2023-08-30 10:06:48,878 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 16 remaining) [2023-08-30 10:06:48,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-08-30 10:06:48,878 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:06:48,879 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 10:06:48,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 152 places, 167 transitions, 352 flow [2023-08-30 10:06:48,897 INFO L130 PetriNetUnfolder]: 32/267 cut-off events. [2023-08-30 10:06:48,898 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 10:06:48,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 281 conditions, 267 events. 32/267 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 731 event pairs, 0 based on Foata normal form. 0/213 useless extension candidates. Maximal degree in co-relation 163. Up to 8 conditions per place. [2023-08-30 10:06:48,899 INFO L82 GeneralOperation]: Start removeDead. Operand has 152 places, 167 transitions, 352 flow [2023-08-30 10:06:48,900 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 152 places, 167 transitions, 352 flow [2023-08-30 10:06:48,900 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:06:48,900 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 152 places, 167 transitions, 352 flow [2023-08-30 10:06:48,900 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 152 places, 167 transitions, 352 flow [2023-08-30 10:06:48,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 152 places, 167 transitions, 352 flow [2023-08-30 10:06:48,916 INFO L130 PetriNetUnfolder]: 32/267 cut-off events. [2023-08-30 10:06:48,917 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 10:06:48,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 281 conditions, 267 events. 32/267 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 731 event pairs, 0 based on Foata normal form. 0/213 useless extension candidates. Maximal degree in co-relation 163. Up to 8 conditions per place. [2023-08-30 10:06:48,922 INFO L119 LiptonReduction]: Number of co-enabled transitions 10008 [2023-08-30 10:06:52,157 INFO L134 LiptonReduction]: Checked pairs total: 23160 [2023-08-30 10:06:52,157 INFO L136 LiptonReduction]: Total number of compositions: 135 [2023-08-30 10:06:52,160 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-30 10:06:52,161 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;@22f14be1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:06:52,161 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-30 10:06:52,167 INFO L130 PetriNetUnfolder]: 10/62 cut-off events. [2023-08-30 10:06:52,167 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 10:06:52,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:06:52,168 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-30 10:06:52,168 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 10:06:52,168 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:06:52,168 INFO L85 PathProgramCache]: Analyzing trace with hash -739048246, now seen corresponding path program 1 times [2023-08-30 10:06:52,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:06:52,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658446422] [2023-08-30 10:06:52,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:06:52,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:06:52,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 10:06:52,197 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 10:06:52,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 10:06:52,222 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 10:06:52,225 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 10:06:52,226 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-30 10:06:52,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-08-30 10:06:52,226 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-30 10:06:52,227 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-30 10:06:52,229 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 10:06:52,229 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-30 10:06:52,252 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 10:06:52,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 185 places, 205 transitions, 440 flow [2023-08-30 10:06:52,287 INFO L130 PetriNetUnfolder]: 51/412 cut-off events. [2023-08-30 10:06:52,287 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 10:06:52,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 440 conditions, 412 events. 51/412 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1313 event pairs, 1 based on Foata normal form. 0/325 useless extension candidates. Maximal degree in co-relation 275. Up to 16 conditions per place. [2023-08-30 10:06:52,290 INFO L82 GeneralOperation]: Start removeDead. Operand has 185 places, 205 transitions, 440 flow [2023-08-30 10:06:52,293 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 185 places, 205 transitions, 440 flow [2023-08-30 10:06:52,293 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:06:52,293 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 185 places, 205 transitions, 440 flow [2023-08-30 10:06:52,294 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 185 places, 205 transitions, 440 flow [2023-08-30 10:06:52,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 185 places, 205 transitions, 440 flow [2023-08-30 10:06:52,343 INFO L130 PetriNetUnfolder]: 51/412 cut-off events. [2023-08-30 10:06:52,343 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 10:06:52,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 440 conditions, 412 events. 51/412 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1313 event pairs, 1 based on Foata normal form. 0/325 useless extension candidates. Maximal degree in co-relation 275. Up to 16 conditions per place. [2023-08-30 10:06:52,360 INFO L119 LiptonReduction]: Number of co-enabled transitions 19224 [2023-08-30 10:06:55,510 INFO L134 LiptonReduction]: Checked pairs total: 49550 [2023-08-30 10:06:55,510 INFO L136 LiptonReduction]: Total number of compositions: 161 [2023-08-30 10:06:55,512 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 10:06:55,512 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;@22f14be1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:06:55,513 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-08-30 10:06:55,514 INFO L130 PetriNetUnfolder]: 2/14 cut-off events. [2023-08-30 10:06:55,514 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:06:55,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:06:55,515 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 10:06:55,515 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 10:06:55,515 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:06:55,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1416913597, now seen corresponding path program 1 times [2023-08-30 10:06:55,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:06:55,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283001944] [2023-08-30 10:06:55,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:06:55,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:06:55,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:06:55,563 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 10:06:55,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:06:55,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283001944] [2023-08-30 10:06:55,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283001944] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:06:55,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:06:55,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:06:55,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826479653] [2023-08-30 10:06:55,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:06:55,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:06:55,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:06:55,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:06:55,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:06:55,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 366 [2023-08-30 10:06:55,573 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 89 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 172.33333333333334) internal successors, (517), 3 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:06:55,573 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:06:55,573 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 366 [2023-08-30 10:06:55,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:07:02,446 INFO L130 PetriNetUnfolder]: 99392/142510 cut-off events. [2023-08-30 10:07:02,446 INFO L131 PetriNetUnfolder]: For 2441/2441 co-relation queries the response was YES. [2023-08-30 10:07:02,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282114 conditions, 142510 events. 99392/142510 cut-off events. For 2441/2441 co-relation queries the response was YES. Maximal size of possible extension queue 3685. Compared 1064965 event pairs, 64598 based on Foata normal form. 13015/110356 useless extension candidates. Maximal degree in co-relation 24698. Up to 137955 conditions per place. [2023-08-30 10:07:02,987 INFO L137 encePairwiseOnDemand]: 341/366 looper letters, 73 selfloop transitions, 2 changer transitions 0/84 dead transitions. [2023-08-30 10:07:02,987 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 84 transitions, 348 flow [2023-08-30 10:07:02,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:07:02,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:07:02,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 617 transitions. [2023-08-30 10:07:02,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5619307832422586 [2023-08-30 10:07:02,988 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 617 transitions. [2023-08-30 10:07:02,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 617 transitions. [2023-08-30 10:07:02,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:07:02,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 617 transitions. [2023-08-30 10:07:02,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 205.66666666666666) internal successors, (617), 3 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:02,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:02,990 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:02,990 INFO L175 Difference]: Start difference. First operand has 73 places, 89 transitions, 208 flow. Second operand 3 states and 617 transitions. [2023-08-30 10:07:02,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 84 transitions, 348 flow [2023-08-30 10:07:02,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 84 transitions, 348 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 10:07:02,992 INFO L231 Difference]: Finished difference. Result has 76 places, 70 transitions, 184 flow [2023-08-30 10:07:02,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=184, PETRI_PLACES=76, PETRI_TRANSITIONS=70} [2023-08-30 10:07:02,992 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 3 predicate places. [2023-08-30 10:07:02,993 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 70 transitions, 184 flow [2023-08-30 10:07:02,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 172.33333333333334) internal successors, (517), 3 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:02,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:07:02,993 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:07:02,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-08-30 10:07:02,993 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 10:07:02,993 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:07:02,994 INFO L85 PathProgramCache]: Analyzing trace with hash 159069649, now seen corresponding path program 1 times [2023-08-30 10:07:02,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:07:02,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647318236] [2023-08-30 10:07:02,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:07:02,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:07:03,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:07:03,016 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 10:07:03,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:07:03,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647318236] [2023-08-30 10:07:03,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647318236] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:07:03,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:07:03,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:07:03,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133415103] [2023-08-30 10:07:03,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:07:03,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:07:03,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:07:03,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:07:03,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:07:03,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 366 [2023-08-30 10:07:03,035 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 70 transitions, 184 flow. Second operand has 3 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:03,035 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:07:03,035 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 366 [2023-08-30 10:07:03,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:07:11,952 INFO L130 PetriNetUnfolder]: 120399/177104 cut-off events. [2023-08-30 10:07:11,952 INFO L131 PetriNetUnfolder]: For 11106/11106 co-relation queries the response was YES. [2023-08-30 10:07:12,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 366748 conditions, 177104 events. 120399/177104 cut-off events. For 11106/11106 co-relation queries the response was YES. Maximal size of possible extension queue 4989. Compared 1429654 event pairs, 52365 based on Foata normal form. 0/129359 useless extension candidates. Maximal degree in co-relation 366648. Up to 122221 conditions per place. [2023-08-30 10:07:12,675 INFO L137 encePairwiseOnDemand]: 347/366 looper letters, 103 selfloop transitions, 13 changer transitions 0/124 dead transitions. [2023-08-30 10:07:12,675 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 124 transitions, 556 flow [2023-08-30 10:07:12,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:07:12,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:07:12,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 624 transitions. [2023-08-30 10:07:12,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5683060109289617 [2023-08-30 10:07:12,676 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 624 transitions. [2023-08-30 10:07:12,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 624 transitions. [2023-08-30 10:07:12,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:07:12,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 624 transitions. [2023-08-30 10:07:12,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 208.0) internal successors, (624), 3 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:12,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:12,678 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:12,678 INFO L175 Difference]: Start difference. First operand has 76 places, 70 transitions, 184 flow. Second operand 3 states and 624 transitions. [2023-08-30 10:07:12,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 124 transitions, 556 flow [2023-08-30 10:07:12,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 124 transitions, 553 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:07:12,692 INFO L231 Difference]: Finished difference. Result has 79 places, 82 transitions, 294 flow [2023-08-30 10:07:12,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=294, PETRI_PLACES=79, PETRI_TRANSITIONS=82} [2023-08-30 10:07:12,692 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 6 predicate places. [2023-08-30 10:07:12,692 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 82 transitions, 294 flow [2023-08-30 10:07:12,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:12,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:07:12,692 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:07:12,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-08-30 10:07:12,692 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:07:12,693 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:07:12,693 INFO L85 PathProgramCache]: Analyzing trace with hash 159069703, now seen corresponding path program 1 times [2023-08-30 10:07:12,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:07:12,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821755080] [2023-08-30 10:07:12,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:07:12,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:07:12,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:07:12,715 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 10:07:12,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:07:12,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821755080] [2023-08-30 10:07:12,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821755080] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:07:12,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:07:12,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:07:12,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471975170] [2023-08-30 10:07:12,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:07:12,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:07:12,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:07:12,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:07:12,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:07:12,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 366 [2023-08-30 10:07:12,730 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 82 transitions, 294 flow. Second operand has 3 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:12,730 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:07:12,731 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 366 [2023-08-30 10:07:12,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:07:22,910 INFO L130 PetriNetUnfolder]: 125360/187098 cut-off events. [2023-08-30 10:07:22,910 INFO L131 PetriNetUnfolder]: For 70173/72317 co-relation queries the response was YES. [2023-08-30 10:07:23,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 456422 conditions, 187098 events. 125360/187098 cut-off events. For 70173/72317 co-relation queries the response was YES. Maximal size of possible extension queue 5628. Compared 1569586 event pairs, 45341 based on Foata normal form. 4084/175509 useless extension candidates. Maximal degree in co-relation 248334. Up to 138432 conditions per place. [2023-08-30 10:07:23,762 INFO L137 encePairwiseOnDemand]: 347/366 looper letters, 115 selfloop transitions, 16 changer transitions 0/139 dead transitions. [2023-08-30 10:07:23,762 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 139 transitions, 737 flow [2023-08-30 10:07:23,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:07:23,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:07:23,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 624 transitions. [2023-08-30 10:07:23,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5683060109289617 [2023-08-30 10:07:23,764 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 624 transitions. [2023-08-30 10:07:23,764 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 624 transitions. [2023-08-30 10:07:23,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:07:23,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 624 transitions. [2023-08-30 10:07:23,765 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 208.0) internal successors, (624), 3 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:23,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:23,766 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:23,766 INFO L175 Difference]: Start difference. First operand has 79 places, 82 transitions, 294 flow. Second operand 3 states and 624 transitions. [2023-08-30 10:07:23,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 139 transitions, 737 flow [2023-08-30 10:07:24,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 139 transitions, 705 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:07:24,144 INFO L231 Difference]: Finished difference. Result has 81 places, 97 transitions, 440 flow [2023-08-30 10:07:24,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=440, PETRI_PLACES=81, PETRI_TRANSITIONS=97} [2023-08-30 10:07:24,145 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 8 predicate places. [2023-08-30 10:07:24,145 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 97 transitions, 440 flow [2023-08-30 10:07:24,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:24,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:07:24,145 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 10:07:24,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-08-30 10:07:24,145 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:07:24,146 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:07:24,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1825122674, now seen corresponding path program 1 times [2023-08-30 10:07:24,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:07:24,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546794591] [2023-08-30 10:07:24,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:07:24,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:07:24,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:07:24,166 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 10:07:24,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:07:24,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546794591] [2023-08-30 10:07:24,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546794591] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:07:24,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:07:24,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:07:24,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109294052] [2023-08-30 10:07:24,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:07:24,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:07:24,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:07:24,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:07:24,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:07:24,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 366 [2023-08-30 10:07:24,176 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 97 transitions, 440 flow. Second operand has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:24,176 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:07:24,176 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 366 [2023-08-30 10:07:24,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:07:33,964 INFO L130 PetriNetUnfolder]: 113067/170686 cut-off events. [2023-08-30 10:07:33,964 INFO L131 PetriNetUnfolder]: For 128194/128656 co-relation queries the response was YES. [2023-08-30 10:07:34,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 453368 conditions, 170686 events. 113067/170686 cut-off events. For 128194/128656 co-relation queries the response was YES. Maximal size of possible extension queue 5015. Compared 1429256 event pairs, 100989 based on Foata normal form. 396/159683 useless extension candidates. Maximal degree in co-relation 199291. Up to 163728 conditions per place. [2023-08-30 10:07:34,794 INFO L137 encePairwiseOnDemand]: 364/366 looper letters, 83 selfloop transitions, 1 changer transitions 0/96 dead transitions. [2023-08-30 10:07:34,794 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 96 transitions, 604 flow [2023-08-30 10:07:34,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:07:34,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:07:34,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 573 transitions. [2023-08-30 10:07:34,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5218579234972678 [2023-08-30 10:07:34,795 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 573 transitions. [2023-08-30 10:07:34,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 573 transitions. [2023-08-30 10:07:34,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:07:34,796 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 573 transitions. [2023-08-30 10:07:34,796 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 10:07:34,797 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:34,797 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:34,797 INFO L175 Difference]: Start difference. First operand has 81 places, 97 transitions, 440 flow. Second operand 3 states and 573 transitions. [2023-08-30 10:07:34,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 96 transitions, 604 flow [2023-08-30 10:07:40,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 96 transitions, 572 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:07:40,590 INFO L231 Difference]: Finished difference. Result has 80 places, 96 transitions, 406 flow [2023-08-30 10:07:40,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=406, PETRI_PLACES=80, PETRI_TRANSITIONS=96} [2023-08-30 10:07:40,591 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 7 predicate places. [2023-08-30 10:07:40,591 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 96 transitions, 406 flow [2023-08-30 10:07:40,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:40,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:07:40,592 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 10:07:40,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-08-30 10:07:40,592 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:07:40,593 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:07:40,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1825122673, now seen corresponding path program 1 times [2023-08-30 10:07:40,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:07:40,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047216027] [2023-08-30 10:07:40,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:07:40,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:07:40,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:07:40,611 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 10:07:40,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:07:40,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047216027] [2023-08-30 10:07:40,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047216027] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:07:40,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:07:40,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:07:40,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173684118] [2023-08-30 10:07:40,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:07:40,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:07:40,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:07:40,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:07:40,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:07:40,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 366 [2023-08-30 10:07:40,620 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 96 transitions, 406 flow. Second operand has 3 states, 3 states have (on average 172.33333333333334) internal successors, (517), 3 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:40,621 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:07:40,621 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 366 [2023-08-30 10:07:40,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:07:48,497 INFO L130 PetriNetUnfolder]: 102550/151816 cut-off events. [2023-08-30 10:07:48,498 INFO L131 PetriNetUnfolder]: For 85932/86428 co-relation queries the response was YES. [2023-08-30 10:07:48,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 392110 conditions, 151816 events. 102550/151816 cut-off events. For 85932/86428 co-relation queries the response was YES. Maximal size of possible extension queue 4591. Compared 1271987 event pairs, 13883 based on Foata normal form. 360/134566 useless extension candidates. Maximal degree in co-relation 392095. Up to 125552 conditions per place. [2023-08-30 10:07:49,410 INFO L137 encePairwiseOnDemand]: 362/366 looper letters, 143 selfloop transitions, 4 changer transitions 0/159 dead transitions. [2023-08-30 10:07:49,411 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 159 transitions, 976 flow [2023-08-30 10:07:49,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:07:49,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:07:49,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 609 transitions. [2023-08-30 10:07:49,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5546448087431693 [2023-08-30 10:07:49,412 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 609 transitions. [2023-08-30 10:07:49,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 609 transitions. [2023-08-30 10:07:49,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:07:49,412 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 609 transitions. [2023-08-30 10:07:49,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:49,413 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:49,413 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:49,413 INFO L175 Difference]: Start difference. First operand has 80 places, 96 transitions, 406 flow. Second operand 3 states and 609 transitions. [2023-08-30 10:07:49,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 159 transitions, 976 flow [2023-08-30 10:07:49,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 159 transitions, 975 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:07:49,427 INFO L231 Difference]: Finished difference. Result has 81 places, 96 transitions, 417 flow [2023-08-30 10:07:49,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=417, PETRI_PLACES=81, PETRI_TRANSITIONS=96} [2023-08-30 10:07:49,428 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 8 predicate places. [2023-08-30 10:07:49,428 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 96 transitions, 417 flow [2023-08-30 10:07:49,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 172.33333333333334) internal successors, (517), 3 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:49,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:07:49,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:07:49,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-08-30 10:07:49,429 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 10:07:49,429 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:07:49,429 INFO L85 PathProgramCache]: Analyzing trace with hash -809779899, now seen corresponding path program 1 times [2023-08-30 10:07:49,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:07:49,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779785363] [2023-08-30 10:07:49,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:07:49,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:07:49,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:07:49,460 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 10:07:49,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:07:49,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779785363] [2023-08-30 10:07:49,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779785363] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:07:49,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:07:49,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:07:49,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927162186] [2023-08-30 10:07:49,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:07:49,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 10:07:49,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:07:49,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 10:07:49,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:07:49,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 366 [2023-08-30 10:07:49,500 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 96 transitions, 417 flow. Second operand has 5 states, 5 states have (on average 166.0) internal successors, (830), 5 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:07:49,500 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:07:49,500 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 366 [2023-08-30 10:07:49,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:08:00,454 INFO L130 PetriNetUnfolder]: 131549/193846 cut-off events. [2023-08-30 10:08:00,454 INFO L131 PetriNetUnfolder]: For 112974/114134 co-relation queries the response was YES. [2023-08-30 10:08:00,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 517151 conditions, 193846 events. 131549/193846 cut-off events. For 112974/114134 co-relation queries the response was YES. Maximal size of possible extension queue 5608. Compared 1586737 event pairs, 30908 based on Foata normal form. 240/174889 useless extension candidates. Maximal degree in co-relation 517134. Up to 111198 conditions per place. [2023-08-30 10:08:01,397 INFO L137 encePairwiseOnDemand]: 346/366 looper letters, 254 selfloop transitions, 52 changer transitions 0/314 dead transitions. [2023-08-30 10:08:01,397 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 314 transitions, 1819 flow [2023-08-30 10:08:01,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 10:08:01,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 10:08:01,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1431 transitions. [2023-08-30 10:08:01,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5585480093676815 [2023-08-30 10:08:01,399 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1431 transitions. [2023-08-30 10:08:01,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1431 transitions. [2023-08-30 10:08:01,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:08:01,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1431 transitions. [2023-08-30 10:08:01,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 204.42857142857142) internal successors, (1431), 7 states have internal predecessors, (1431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:08:01,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 366.0) internal successors, (2928), 8 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:08:01,402 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 366.0) internal successors, (2928), 8 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:08:01,403 INFO L175 Difference]: Start difference. First operand has 81 places, 96 transitions, 417 flow. Second operand 7 states and 1431 transitions. [2023-08-30 10:08:01,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 314 transitions, 1819 flow [2023-08-30 10:08:01,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 314 transitions, 1801 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:08:01,433 INFO L231 Difference]: Finished difference. Result has 90 places, 132 transitions, 822 flow [2023-08-30 10:08:01,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=822, PETRI_PLACES=90, PETRI_TRANSITIONS=132} [2023-08-30 10:08:01,434 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 17 predicate places. [2023-08-30 10:08:01,434 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 132 transitions, 822 flow [2023-08-30 10:08:01,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 166.0) internal successors, (830), 5 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:08:01,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:08:01,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:08:01,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-08-30 10:08:01,435 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 10:08:01,435 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:08:01,435 INFO L85 PathProgramCache]: Analyzing trace with hash -809779923, now seen corresponding path program 1 times [2023-08-30 10:08:01,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:08:01,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578901944] [2023-08-30 10:08:01,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:08:01,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:08:01,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:08:01,473 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 10:08:01,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:08:01,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578901944] [2023-08-30 10:08:01,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578901944] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:08:01,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:08:01,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:08:01,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414840388] [2023-08-30 10:08:01,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:08:01,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 10:08:01,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:08:01,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 10:08:01,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:08:01,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 366 [2023-08-30 10:08:01,505 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 132 transitions, 822 flow. Second operand has 5 states, 5 states have (on average 166.0) internal successors, (830), 5 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:08:01,506 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:08:01,506 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 366 [2023-08-30 10:08:01,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:08:14,513 INFO L130 PetriNetUnfolder]: 133530/198704 cut-off events. [2023-08-30 10:08:14,513 INFO L131 PetriNetUnfolder]: For 343524/346054 co-relation queries the response was YES. [2023-08-30 10:08:14,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 606873 conditions, 198704 events. 133530/198704 cut-off events. For 343524/346054 co-relation queries the response was YES. Maximal size of possible extension queue 5965. Compared 1660221 event pairs, 22976 based on Foata normal form. 5548/195186 useless extension candidates. Maximal degree in co-relation 606851. Up to 116414 conditions per place. [2023-08-30 10:08:15,675 INFO L137 encePairwiseOnDemand]: 346/366 looper letters, 279 selfloop transitions, 59 changer transitions 0/346 dead transitions. [2023-08-30 10:08:15,675 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 346 transitions, 2538 flow [2023-08-30 10:08:15,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 10:08:15,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 10:08:15,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1392 transitions. [2023-08-30 10:08:15,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5433255269320844 [2023-08-30 10:08:15,677 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1392 transitions. [2023-08-30 10:08:15,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1392 transitions. [2023-08-30 10:08:15,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:08:15,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1392 transitions. [2023-08-30 10:08:15,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 198.85714285714286) internal successors, (1392), 7 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:08:15,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 366.0) internal successors, (2928), 8 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:08:15,680 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 366.0) internal successors, (2928), 8 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:08:15,680 INFO L175 Difference]: Start difference. First operand has 90 places, 132 transitions, 822 flow. Second operand 7 states and 1392 transitions. [2023-08-30 10:08:15,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 346 transitions, 2538 flow [2023-08-30 10:08:18,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 346 transitions, 2448 flow, removed 45 selfloop flow, removed 0 redundant places. [2023-08-30 10:08:18,254 INFO L231 Difference]: Finished difference. Result has 101 places, 178 transitions, 1461 flow [2023-08-30 10:08:18,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=768, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1461, PETRI_PLACES=101, PETRI_TRANSITIONS=178} [2023-08-30 10:08:18,255 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 28 predicate places. [2023-08-30 10:08:18,255 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 178 transitions, 1461 flow [2023-08-30 10:08:18,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 166.0) internal successors, (830), 5 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:08:18,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:08:18,256 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:08:18,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-08-30 10:08:18,256 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 10:08:18,256 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:08:18,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1934812706, now seen corresponding path program 1 times [2023-08-30 10:08:18,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:08:18,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488583036] [2023-08-30 10:08:18,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:08:18,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:08:18,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:08:18,295 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 10:08:18,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:08:18,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488583036] [2023-08-30 10:08:18,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488583036] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:08:18,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:08:18,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:08:18,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188714641] [2023-08-30 10:08:18,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:08:18,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 10:08:18,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:08:18,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 10:08:18,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:08:18,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 366 [2023-08-30 10:08:18,333 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 178 transitions, 1461 flow. Second operand has 5 states, 5 states have (on average 166.2) internal successors, (831), 5 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:08:18,333 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:08:18,333 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 366 [2023-08-30 10:08:18,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:08:38,155 INFO L130 PetriNetUnfolder]: 157769/233795 cut-off events. [2023-08-30 10:08:38,155 INFO L131 PetriNetUnfolder]: For 806041/806041 co-relation queries the response was YES. [2023-08-30 10:08:38,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 818446 conditions, 233795 events. 157769/233795 cut-off events. For 806041/806041 co-relation queries the response was YES. Maximal size of possible extension queue 7028. Compared 1973145 event pairs, 39148 based on Foata normal form. 3900/227582 useless extension candidates. Maximal degree in co-relation 818417. Up to 146898 conditions per place. [2023-08-30 10:08:39,732 INFO L137 encePairwiseOnDemand]: 346/366 looper letters, 338 selfloop transitions, 102 changer transitions 0/448 dead transitions. [2023-08-30 10:08:39,732 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 448 transitions, 3912 flow [2023-08-30 10:08:39,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 10:08:39,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 10:08:39,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1431 transitions. [2023-08-30 10:08:39,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5585480093676815 [2023-08-30 10:08:39,734 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1431 transitions. [2023-08-30 10:08:39,734 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1431 transitions. [2023-08-30 10:08:39,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:08:39,735 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1431 transitions. [2023-08-30 10:08:39,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 204.42857142857142) internal successors, (1431), 7 states have internal predecessors, (1431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:08:39,737 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 366.0) internal successors, (2928), 8 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:08:39,737 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 366.0) internal successors, (2928), 8 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:08:39,737 INFO L175 Difference]: Start difference. First operand has 101 places, 178 transitions, 1461 flow. Second operand 7 states and 1431 transitions. [2023-08-30 10:08:39,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 448 transitions, 3912 flow [2023-08-30 10:08:52,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 448 transitions, 3908 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-08-30 10:08:52,084 INFO L231 Difference]: Finished difference. Result has 111 places, 239 transitions, 2482 flow [2023-08-30 10:08:52,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=1417, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2482, PETRI_PLACES=111, PETRI_TRANSITIONS=239} [2023-08-30 10:08:52,084 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 38 predicate places. [2023-08-30 10:08:52,085 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 239 transitions, 2482 flow [2023-08-30 10:08:52,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 166.2) internal successors, (831), 5 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:08:52,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:08:52,085 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:08:52,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-08-30 10:08:52,085 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:08:52,085 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:08:52,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1934812705, now seen corresponding path program 1 times [2023-08-30 10:08:52,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:08:52,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300148754] [2023-08-30 10:08:52,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:08:52,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:08:52,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:08:52,122 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 10:08:52,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:08:52,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300148754] [2023-08-30 10:08:52,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300148754] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:08:52,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:08:52,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:08:52,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678378180] [2023-08-30 10:08:52,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:08:52,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 10:08:52,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:08:52,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 10:08:52,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:08:52,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 366 [2023-08-30 10:08:52,156 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 239 transitions, 2482 flow. Second operand has 5 states, 5 states have (on average 166.2) internal successors, (831), 5 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:08:52,156 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:08:52,157 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 366 [2023-08-30 10:08:52,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:09:13,126 INFO L130 PetriNetUnfolder]: 155540/232383 cut-off events. [2023-08-30 10:09:13,126 INFO L131 PetriNetUnfolder]: For 1216282/1216282 co-relation queries the response was YES. [2023-08-30 10:09:13,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 896073 conditions, 232383 events. 155540/232383 cut-off events. For 1216282/1216282 co-relation queries the response was YES. Maximal size of possible extension queue 7179. Compared 1987775 event pairs, 31333 based on Foata normal form. 4384/226490 useless extension candidates. Maximal degree in co-relation 896038. Up to 147131 conditions per place. [2023-08-30 10:09:15,009 INFO L137 encePairwiseOnDemand]: 346/366 looper letters, 381 selfloop transitions, 102 changer transitions 0/491 dead transitions. [2023-08-30 10:09:15,009 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 491 transitions, 5289 flow [2023-08-30 10:09:15,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 10:09:15,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 10:09:15,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1391 transitions. [2023-08-30 10:09:15,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5429352068696331 [2023-08-30 10:09:15,011 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1391 transitions. [2023-08-30 10:09:15,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1391 transitions. [2023-08-30 10:09:15,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:09:15,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1391 transitions. [2023-08-30 10:09:15,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 198.71428571428572) internal successors, (1391), 7 states have internal predecessors, (1391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:15,014 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 366.0) internal successors, (2928), 8 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:15,014 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 366.0) internal successors, (2928), 8 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:15,014 INFO L175 Difference]: Start difference. First operand has 111 places, 239 transitions, 2482 flow. Second operand 7 states and 1391 transitions. [2023-08-30 10:09:15,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 491 transitions, 5289 flow [2023-08-30 10:09:38,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 491 transitions, 5125 flow, removed 82 selfloop flow, removed 0 redundant places. [2023-08-30 10:09:38,315 INFO L231 Difference]: Finished difference. Result has 122 places, 297 transitions, 3633 flow [2023-08-30 10:09:38,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=2268, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3633, PETRI_PLACES=122, PETRI_TRANSITIONS=297} [2023-08-30 10:09:38,316 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 49 predicate places. [2023-08-30 10:09:38,316 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 297 transitions, 3633 flow [2023-08-30 10:09:38,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 166.2) internal successors, (831), 5 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:38,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:09:38,316 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:09:38,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-08-30 10:09:38,317 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 10:09:38,317 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:09:38,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1261773491, now seen corresponding path program 1 times [2023-08-30 10:09:38,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:09:38,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674308555] [2023-08-30 10:09:38,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:09:38,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:09:38,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:09:38,358 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 10:09:38,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:09:38,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674308555] [2023-08-30 10:09:38,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674308555] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:09:38,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:09:38,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:09:38,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925561917] [2023-08-30 10:09:38,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:09:38,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 10:09:38,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:09:38,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 10:09:38,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:09:38,388 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 366 [2023-08-30 10:09:38,390 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 297 transitions, 3633 flow. Second operand has 5 states, 5 states have (on average 166.4) internal successors, (832), 5 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:09:38,390 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:09:38,390 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 366 [2023-08-30 10:09:38,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:10:04,658 INFO L130 PetriNetUnfolder]: 168602/250135 cut-off events. [2023-08-30 10:10:04,658 INFO L131 PetriNetUnfolder]: For 1965172/1965172 co-relation queries the response was YES. [2023-08-30 10:10:05,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1072970 conditions, 250135 events. 168602/250135 cut-off events. For 1965172/1965172 co-relation queries the response was YES. Maximal size of possible extension queue 7632. Compared 2125788 event pairs, 39653 based on Foata normal form. 3726/242938 useless extension candidates. Maximal degree in co-relation 1072928. Up to 174875 conditions per place. [2023-08-30 10:10:06,695 INFO L137 encePairwiseOnDemand]: 347/366 looper letters, 395 selfloop transitions, 102 changer transitions 0/505 dead transitions. [2023-08-30 10:10:06,695 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 505 transitions, 6205 flow [2023-08-30 10:10:06,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 10:10:06,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 10:10:06,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1382 transitions. [2023-08-30 10:10:06,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5394223263075723 [2023-08-30 10:10:06,697 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1382 transitions. [2023-08-30 10:10:06,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1382 transitions. [2023-08-30 10:10:06,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:10:06,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1382 transitions. [2023-08-30 10:10:06,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 197.42857142857142) internal successors, (1382), 7 states have internal predecessors, (1382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:06,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 366.0) internal successors, (2928), 8 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:06,700 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 366.0) internal successors, (2928), 8 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:06,700 INFO L175 Difference]: Start difference. First operand has 122 places, 297 transitions, 3633 flow. Second operand 7 states and 1382 transitions. [2023-08-30 10:10:06,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 505 transitions, 6205 flow [2023-08-30 10:10:33,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 505 transitions, 6201 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-08-30 10:10:33,930 INFO L231 Difference]: Finished difference. Result has 131 places, 325 transitions, 4612 flow [2023-08-30 10:10:33,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=3279, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4612, PETRI_PLACES=131, PETRI_TRANSITIONS=325} [2023-08-30 10:10:33,930 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 58 predicate places. [2023-08-30 10:10:33,930 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 325 transitions, 4612 flow [2023-08-30 10:10:33,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 166.4) internal successors, (832), 5 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:33,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:10:33,931 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:10:33,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-08-30 10:10:33,931 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:10:33,931 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:10:33,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1261773492, now seen corresponding path program 1 times [2023-08-30 10:10:33,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:10:33,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602816958] [2023-08-30 10:10:33,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:10:33,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:10:33,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:10:33,968 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 10:10:33,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:10:33,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602816958] [2023-08-30 10:10:33,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602816958] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:10:33,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:10:33,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:10:33,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56372749] [2023-08-30 10:10:33,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:10:33,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 10:10:33,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:10:33,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 10:10:33,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:10:33,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 366 [2023-08-30 10:10:33,995 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 325 transitions, 4612 flow. Second operand has 5 states, 5 states have (on average 166.4) internal successors, (832), 5 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:10:33,995 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:10:33,995 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 366 [2023-08-30 10:10:33,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:11:02,490 INFO L130 PetriNetUnfolder]: 159994/239727 cut-off events. [2023-08-30 10:11:02,491 INFO L131 PetriNetUnfolder]: For 2291247/2291247 co-relation queries the response was YES. [2023-08-30 10:11:04,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1060478 conditions, 239727 events. 159994/239727 cut-off events. For 2291247/2291247 co-relation queries the response was YES. Maximal size of possible extension queue 7375. Compared 2069047 event pairs, 44526 based on Foata normal form. 4030/233067 useless extension candidates. Maximal degree in co-relation 1060431. Up to 167461 conditions per place. [2023-08-30 10:11:05,638 INFO L137 encePairwiseOnDemand]: 347/366 looper letters, 382 selfloop transitions, 114 changer transitions 0/504 dead transitions. [2023-08-30 10:11:05,638 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 504 transitions, 6658 flow [2023-08-30 10:11:05,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 10:11:05,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 10:11:05,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1218 transitions. [2023-08-30 10:11:05,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5546448087431693 [2023-08-30 10:11:05,642 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1218 transitions. [2023-08-30 10:11:05,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1218 transitions. [2023-08-30 10:11:05,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:11:05,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1218 transitions. [2023-08-30 10:11:05,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:11:05,645 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 366.0) internal successors, (2562), 7 states have internal predecessors, (2562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:11:05,645 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 366.0) internal successors, (2562), 7 states have internal predecessors, (2562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:11:05,646 INFO L175 Difference]: Start difference. First operand has 131 places, 325 transitions, 4612 flow. Second operand 6 states and 1218 transitions. [2023-08-30 10:11:05,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 504 transitions, 6658 flow [2023-08-30 10:11:43,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 504 transitions, 6658 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 10:11:43,630 INFO L231 Difference]: Finished difference. Result has 139 places, 332 transitions, 5062 flow [2023-08-30 10:11:43,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=4026, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5062, PETRI_PLACES=139, PETRI_TRANSITIONS=332} [2023-08-30 10:11:43,631 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 66 predicate places. [2023-08-30 10:11:43,631 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 332 transitions, 5062 flow [2023-08-30 10:11:43,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 166.4) internal successors, (832), 5 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:11:43,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:11:43,631 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 10:11:43,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2023-08-30 10:11:43,631 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:11:43,632 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:11:43,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1668653961, now seen corresponding path program 1 times [2023-08-30 10:11:43,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:11:43,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746049605] [2023-08-30 10:11:43,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:11:43,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:11:43,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:11:43,677 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 10:11:43,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:11:43,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746049605] [2023-08-30 10:11:43,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746049605] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:11:43,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:11:43,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 10:11:43,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543974375] [2023-08-30 10:11:43,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:11:43,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 10:11:43,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:11:43,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 10:11:43,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 10:11:43,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 366 [2023-08-30 10:11:43,726 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 332 transitions, 5062 flow. Second operand has 6 states, 6 states have (on average 162.66666666666666) internal successors, (976), 6 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:11:43,726 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:11:43,726 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 366 [2023-08-30 10:11:43,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand