./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/06-symbeq_23-idxsense_nr.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --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/06-symbeq_23-idxsense_nr.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 9205365dcda04af07212d180b1c6367c5de79b6e0d2e09ec11b949fed58626f5 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 06:13:08,929 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 06:13:08,931 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 06:13:08,972 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 06:13:08,973 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 06:13:08,976 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 06:13:08,977 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 06:13:08,980 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 06:13:08,982 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 06:13:08,987 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 06:13:08,988 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 06:13:08,990 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 06:13:08,991 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 06:13:08,993 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 06:13:08,994 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 06:13:08,999 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 06:13:09,000 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 06:13:09,001 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 06:13:09,003 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 06:13:09,008 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 06:13:09,009 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 06:13:09,010 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 06:13:09,011 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 06:13:09,012 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 06:13:09,018 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 06:13:09,018 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 06:13:09,018 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 06:13:09,019 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 06:13:09,019 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 06:13:09,020 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 06:13:09,020 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 06:13:09,020 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 06:13:09,021 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 06:13:09,022 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 06:13:09,022 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 06:13:09,022 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 06:13:09,023 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 06:13:09,023 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 06:13:09,023 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 06:13:09,030 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 06:13:09,030 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 06:13:09,032 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 06:13:09,066 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 06:13:09,066 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 06:13:09,067 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 06:13:09,067 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 06:13:09,068 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 06:13:09,068 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 06:13:09,069 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 06:13:09,069 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 06:13:09,069 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 06:13:09,069 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 06:13:09,070 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 06:13:09,070 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 06:13:09,071 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 06:13:09,071 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 06:13:09,071 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 06:13:09,071 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 06:13:09,071 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 06:13:09,071 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 06:13:09,072 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 06:13:09,072 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 06:13:09,072 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 06:13:09,072 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 06:13:09,072 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 06:13:09,073 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 06:13:09,073 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 06:13:09,073 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 06:13:09,073 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 06:13:09,074 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 06:13:09,074 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 06:13:09,074 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 06:13:09,074 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 06:13:09,074 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 06:13:09,075 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 06:13:09,075 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 06:13:09,075 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 06:13:09,075 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 06:13:09,075 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 06:13:09,076 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9205365dcda04af07212d180b1c6367c5de79b6e0d2e09ec11b949fed58626f5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 06:13:09,365 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 06:13:09,383 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 06:13:09,385 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 06:13:09,386 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 06:13:09,387 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 06:13:09,388 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/06-symbeq_23-idxsense_nr.i [2023-09-01 06:13:10,528 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 06:13:10,738 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 06:13:10,738 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/06-symbeq_23-idxsense_nr.i [2023-09-01 06:13:10,751 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44ad47bf6/9be59a73f7a9402db81797b4f154a6a0/FLAG118447c1f [2023-09-01 06:13:10,766 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44ad47bf6/9be59a73f7a9402db81797b4f154a6a0 [2023-09-01 06:13:10,768 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 06:13:10,770 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 06:13:10,771 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 06:13:10,771 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 06:13:10,774 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 06:13:10,774 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 06:13:10" (1/1) ... [2023-09-01 06:13:10,775 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ae6bf42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:13:10, skipping insertion in model container [2023-09-01 06:13:10,775 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 06:13:10" (1/1) ... [2023-09-01 06:13:10,781 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 06:13:10,810 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 06:13:11,047 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 06:13:11,066 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 06:13:11,123 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 06:13:11,182 INFO L208 MainTranslator]: Completed translation [2023-09-01 06:13:11,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:13:11 WrapperNode [2023-09-01 06:13:11,182 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 06:13:11,184 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 06:13:11,184 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 06:13:11,184 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 06:13:11,190 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:13:11" (1/1) ... [2023-09-01 06:13:11,217 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:13:11" (1/1) ... [2023-09-01 06:13:11,241 INFO L138 Inliner]: procedures = 161, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 55 [2023-09-01 06:13:11,241 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 06:13:11,242 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 06:13:11,243 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 06:13:11,243 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 06:13:11,251 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:13:11" (1/1) ... [2023-09-01 06:13:11,252 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:13:11" (1/1) ... [2023-09-01 06:13:11,260 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:13:11" (1/1) ... [2023-09-01 06:13:11,260 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:13:11" (1/1) ... [2023-09-01 06:13:11,277 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:13:11" (1/1) ... [2023-09-01 06:13:11,285 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:13:11" (1/1) ... [2023-09-01 06:13:11,287 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:13:11" (1/1) ... [2023-09-01 06:13:11,288 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:13:11" (1/1) ... [2023-09-01 06:13:11,290 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 06:13:11,297 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 06:13:11,297 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 06:13:11,297 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 06:13:11,299 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:13:11" (1/1) ... [2023-09-01 06:13:11,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 06:13:11,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:13:11,329 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) [2023-09-01 06:13:11,356 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 [2023-09-01 06:13:11,374 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 06:13:11,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 06:13:11,374 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 06:13:11,374 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 06:13:11,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 06:13:11,375 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-09-01 06:13:11,375 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-09-01 06:13:11,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 06:13:11,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 06:13:11,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 06:13:11,377 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 06:13:11,476 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 06:13:11,478 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 06:13:11,740 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 06:13:11,746 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 06:13:11,746 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-09-01 06:13:11,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 06:13:11 BoogieIcfgContainer [2023-09-01 06:13:11,748 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 06:13:11,749 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 06:13:11,749 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 06:13:11,752 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 06:13:11,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 06:13:10" (1/3) ... [2023-09-01 06:13:11,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b01b0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 06:13:11, skipping insertion in model container [2023-09-01 06:13:11,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:13:11" (2/3) ... [2023-09-01 06:13:11,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b01b0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 06:13:11, skipping insertion in model container [2023-09-01 06:13:11,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 06:13:11" (3/3) ... [2023-09-01 06:13:11,755 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_23-idxsense_nr.i [2023-09-01 06:13:11,763 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 06:13:11,776 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 06:13:11,776 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-09-01 06:13:11,777 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 06:13:11,851 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 06:13:11,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 75 transitions, 155 flow [2023-09-01 06:13:11,939 INFO L130 PetriNetUnfolder]: 2/74 cut-off events. [2023-09-01 06:13:11,940 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 06:13:11,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 74 events. 2/74 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 63 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2023-09-01 06:13:11,944 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 75 transitions, 155 flow [2023-09-01 06:13:11,950 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 74 transitions, 151 flow [2023-09-01 06:13:11,955 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:13:11,973 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 74 transitions, 151 flow [2023-09-01 06:13:11,979 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 76 places, 74 transitions, 151 flow [2023-09-01 06:13:11,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 74 transitions, 151 flow [2023-09-01 06:13:12,008 INFO L130 PetriNetUnfolder]: 2/74 cut-off events. [2023-09-01 06:13:12,009 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 06:13:12,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 74 events. 2/74 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 63 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2023-09-01 06:13:12,025 INFO L119 LiptonReduction]: Number of co-enabled transitions 930 [2023-09-01 06:13:13,642 INFO L134 LiptonReduction]: Checked pairs total: 1501 [2023-09-01 06:13:13,643 INFO L136 LiptonReduction]: Total number of compositions: 66 [2023-09-01 06:13:13,655 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 06:13:13,660 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;@3a0da6fe, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:13:13,661 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-09-01 06:13:13,663 INFO L130 PetriNetUnfolder]: 1/3 cut-off events. [2023-09-01 06:13:13,663 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 06:13:13,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:13:13,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 06:13:13,665 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-09-01 06:13:13,669 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:13:13,669 INFO L85 PathProgramCache]: Analyzing trace with hash 8670, now seen corresponding path program 1 times [2023-09-01 06:13:13,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:13:13,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474475930] [2023-09-01 06:13:13,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:13:13,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:13:13,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:13:13,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:13:13,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:13:13,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474475930] [2023-09-01 06:13:13,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474475930] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:13:13,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 06:13:13,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 06:13:13,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173858034] [2023-09-01 06:13:13,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:13:13,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 06:13:13,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:13:13,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 06:13:13,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 06:13:13,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 141 [2023-09-01 06:13:13,914 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 24 transitions, 51 flow. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:13,914 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:13:13,915 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 141 [2023-09-01 06:13:13,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:13:13,997 INFO L130 PetriNetUnfolder]: 67/160 cut-off events. [2023-09-01 06:13:13,998 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 06:13:13,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 318 conditions, 160 events. 67/160 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 559 event pairs, 66 based on Foata normal form. 0/107 useless extension candidates. Maximal degree in co-relation 305. Up to 153 conditions per place. [2023-09-01 06:13:14,002 INFO L137 encePairwiseOnDemand]: 138/141 looper letters, 20 selfloop transitions, 1 changer transitions 0/22 dead transitions. [2023-09-01 06:13:14,002 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 22 transitions, 89 flow [2023-09-01 06:13:14,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 06:13:14,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 06:13:14,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 230 transitions. [2023-09-01 06:13:14,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5437352245862884 [2023-09-01 06:13:14,020 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 230 transitions. [2023-09-01 06:13:14,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 230 transitions. [2023-09-01 06:13:14,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:13:14,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 230 transitions. [2023-09-01 06:13:14,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:14,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:14,036 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:14,038 INFO L175 Difference]: Start difference. First operand has 27 places, 24 transitions, 51 flow. Second operand 3 states and 230 transitions. [2023-09-01 06:13:14,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 22 transitions, 89 flow [2023-09-01 06:13:14,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 22 transitions, 88 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 06:13:14,042 INFO L231 Difference]: Finished difference. Result has 26 places, 22 transitions, 48 flow [2023-09-01 06:13:14,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=48, PETRI_PLACES=26, PETRI_TRANSITIONS=22} [2023-09-01 06:13:14,047 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, -1 predicate places. [2023-09-01 06:13:14,047 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 22 transitions, 48 flow [2023-09-01 06:13:14,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:14,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:13:14,048 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 06:13:14,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 06:13:14,048 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-09-01 06:13:14,057 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:13:14,057 INFO L85 PathProgramCache]: Analyzing trace with hash 258283361, now seen corresponding path program 1 times [2023-09-01 06:13:14,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:13:14,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389509140] [2023-09-01 06:13:14,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:13:14,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:13:14,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:13:14,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:13:14,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:13:14,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389509140] [2023-09-01 06:13:14,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389509140] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:13:14,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 06:13:14,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 06:13:14,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892477066] [2023-09-01 06:13:14,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:13:14,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 06:13:14,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:13:14,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 06:13:14,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 06:13:14,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 141 [2023-09-01 06:13:14,184 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 22 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:14,184 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:13:14,185 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 141 [2023-09-01 06:13:14,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:13:14,259 INFO L130 PetriNetUnfolder]: 67/161 cut-off events. [2023-09-01 06:13:14,260 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 06:13:14,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 321 conditions, 161 events. 67/161 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 559 event pairs, 66 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 315. Up to 154 conditions per place. [2023-09-01 06:13:14,261 INFO L137 encePairwiseOnDemand]: 138/141 looper letters, 20 selfloop transitions, 2 changer transitions 0/23 dead transitions. [2023-09-01 06:13:14,262 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 23 transitions, 94 flow [2023-09-01 06:13:14,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 06:13:14,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 06:13:14,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 230 transitions. [2023-09-01 06:13:14,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5437352245862884 [2023-09-01 06:13:14,267 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 230 transitions. [2023-09-01 06:13:14,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 230 transitions. [2023-09-01 06:13:14,268 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:13:14,268 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 230 transitions. [2023-09-01 06:13:14,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:14,272 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:14,272 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:14,273 INFO L175 Difference]: Start difference. First operand has 26 places, 22 transitions, 48 flow. Second operand 3 states and 230 transitions. [2023-09-01 06:13:14,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 23 transitions, 94 flow [2023-09-01 06:13:14,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 23 transitions, 93 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 06:13:14,274 INFO L231 Difference]: Finished difference. Result has 28 places, 23 transitions, 59 flow [2023-09-01 06:13:14,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=47, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=59, PETRI_PLACES=28, PETRI_TRANSITIONS=23} [2023-09-01 06:13:14,275 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2023-09-01 06:13:14,275 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 23 transitions, 59 flow [2023-09-01 06:13:14,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:14,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:13:14,276 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 06:13:14,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 06:13:14,276 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-09-01 06:13:14,278 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:13:14,278 INFO L85 PathProgramCache]: Analyzing trace with hash -574074831, now seen corresponding path program 1 times [2023-09-01 06:13:14,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:13:14,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41183411] [2023-09-01 06:13:14,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:13:14,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:13:14,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:13:14,383 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:13:14,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:13:14,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41183411] [2023-09-01 06:13:14,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41183411] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 06:13:14,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676794985] [2023-09-01 06:13:14,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:13:14,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:13:14,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:13:14,387 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) [2023-09-01 06:13:14,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-09-01 06:13:14,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:13:14,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2023-09-01 06:13:14,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:13:14,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:13:14,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 06:13:14,523 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:13:14,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676794985] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 06:13:14,524 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 06:13:14,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-09-01 06:13:14,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646500589] [2023-09-01 06:13:14,524 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 06:13:14,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 06:13:14,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:13:14,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 06:13:14,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-09-01 06:13:14,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 141 [2023-09-01 06:13:14,543 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 23 transitions, 59 flow. Second operand has 6 states, 6 states have (on average 69.5) internal successors, (417), 6 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:14,543 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:13:14,543 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 141 [2023-09-01 06:13:14,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:13:14,627 INFO L130 PetriNetUnfolder]: 67/164 cut-off events. [2023-09-01 06:13:14,640 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 06:13:14,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 336 conditions, 164 events. 67/164 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 559 event pairs, 66 based on Foata normal form. 0/111 useless extension candidates. Maximal degree in co-relation 328. Up to 154 conditions per place. [2023-09-01 06:13:14,642 INFO L137 encePairwiseOnDemand]: 138/141 looper letters, 20 selfloop transitions, 5 changer transitions 0/26 dead transitions. [2023-09-01 06:13:14,642 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 26 transitions, 121 flow [2023-09-01 06:13:14,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 06:13:14,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 06:13:14,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 436 transitions. [2023-09-01 06:13:14,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5153664302600472 [2023-09-01 06:13:14,644 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 436 transitions. [2023-09-01 06:13:14,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 436 transitions. [2023-09-01 06:13:14,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:13:14,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 436 transitions. [2023-09-01 06:13:14,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 72.66666666666667) internal successors, (436), 6 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:14,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 141.0) internal successors, (987), 7 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:14,648 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 141.0) internal successors, (987), 7 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:14,648 INFO L175 Difference]: Start difference. First operand has 28 places, 23 transitions, 59 flow. Second operand 6 states and 436 transitions. [2023-09-01 06:13:14,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 26 transitions, 121 flow [2023-09-01 06:13:14,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 26 transitions, 117 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-09-01 06:13:14,650 INFO L231 Difference]: Finished difference. Result has 35 places, 26 transitions, 91 flow [2023-09-01 06:13:14,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=55, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=91, PETRI_PLACES=35, PETRI_TRANSITIONS=26} [2023-09-01 06:13:14,651 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 8 predicate places. [2023-09-01 06:13:14,651 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 26 transitions, 91 flow [2023-09-01 06:13:14,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 69.5) internal successors, (417), 6 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:14,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:13:14,652 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1] [2023-09-01 06:13:14,659 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-09-01 06:13:14,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:13:14,859 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-09-01 06:13:14,859 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:13:14,859 INFO L85 PathProgramCache]: Analyzing trace with hash 718588769, now seen corresponding path program 2 times [2023-09-01 06:13:14,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:13:14,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673638597] [2023-09-01 06:13:14,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:13:14,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:13:14,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:13:15,007 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:13:15,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:13:15,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673638597] [2023-09-01 06:13:15,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673638597] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 06:13:15,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718693946] [2023-09-01 06:13:15,010 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 06:13:15,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:13:15,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:13:15,017 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) [2023-09-01 06:13:15,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-09-01 06:13:15,074 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 06:13:15,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 06:13:15,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 12 conjunts are in the unsatisfiable core [2023-09-01 06:13:15,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:13:15,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 12 [2023-09-01 06:13:15,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 06:13:15,169 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-09-01 06:13:15,192 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-09-01 06:13:15,192 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 06:13:15,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1718693946] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:13:15,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 06:13:15,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 8 [2023-09-01 06:13:15,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804425846] [2023-09-01 06:13:15,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:13:15,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 06:13:15,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:13:15,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 06:13:15,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-09-01 06:13:15,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 141 [2023-09-01 06:13:15,233 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 91 flow. Second operand has 4 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:15,233 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:13:15,233 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 141 [2023-09-01 06:13:15,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:13:15,308 INFO L130 PetriNetUnfolder]: 51/130 cut-off events. [2023-09-01 06:13:15,308 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 06:13:15,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 283 conditions, 130 events. 51/130 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 429 event pairs, 25 based on Foata normal form. 0/96 useless extension candidates. Maximal degree in co-relation 271. Up to 106 conditions per place. [2023-09-01 06:13:15,310 INFO L137 encePairwiseOnDemand]: 134/141 looper letters, 28 selfloop transitions, 3 changer transitions 0/32 dead transitions. [2023-09-01 06:13:15,310 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 32 transitions, 165 flow [2023-09-01 06:13:15,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 06:13:15,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 06:13:15,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 235 transitions. [2023-09-01 06:13:15,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2023-09-01 06:13:15,312 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 235 transitions. [2023-09-01 06:13:15,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 235 transitions. [2023-09-01 06:13:15,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:13:15,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 235 transitions. [2023-09-01 06:13:15,313 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:15,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:15,314 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:15,314 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 91 flow. Second operand 3 states and 235 transitions. [2023-09-01 06:13:15,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 32 transitions, 165 flow [2023-09-01 06:13:15,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 32 transitions, 151 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-09-01 06:13:15,316 INFO L231 Difference]: Finished difference. Result has 37 places, 28 transitions, 102 flow [2023-09-01 06:13:15,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=37, PETRI_TRANSITIONS=28} [2023-09-01 06:13:15,317 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2023-09-01 06:13:15,317 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 28 transitions, 102 flow [2023-09-01 06:13:15,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:15,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:13:15,318 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:13:15,333 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-09-01 06:13:15,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-09-01 06:13:15,525 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-09-01 06:13:15,525 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:13:15,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1361070110, now seen corresponding path program 1 times [2023-09-01 06:13:15,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:13:15,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007753169] [2023-09-01 06:13:15,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:13:15,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:13:15,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:13:15,614 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:13:15,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:13:15,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007753169] [2023-09-01 06:13:15,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007753169] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 06:13:15,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814671514] [2023-09-01 06:13:15,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:13:15,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:13:15,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:13:15,616 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) [2023-09-01 06:13:15,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-09-01 06:13:15,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:13:15,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 06:13:15,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:13:15,694 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:13:15,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 06:13:15,740 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:13:15,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814671514] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 06:13:15,740 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 06:13:15,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-09-01 06:13:15,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989289028] [2023-09-01 06:13:15,741 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 06:13:15,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 06:13:15,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:13:15,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 06:13:15,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-09-01 06:13:15,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 141 [2023-09-01 06:13:15,769 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 28 transitions, 102 flow. Second operand has 12 states, 12 states have (on average 69.5) internal successors, (834), 12 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:15,770 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:13:15,770 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 141 [2023-09-01 06:13:15,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:13:15,817 INFO L130 PetriNetUnfolder]: 51/136 cut-off events. [2023-09-01 06:13:15,817 INFO L131 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2023-09-01 06:13:15,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 342 conditions, 136 events. 51/136 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 433 event pairs, 43 based on Foata normal form. 6/117 useless extension candidates. Maximal degree in co-relation 328. Up to 122 conditions per place. [2023-09-01 06:13:15,819 INFO L137 encePairwiseOnDemand]: 138/141 looper letters, 22 selfloop transitions, 11 changer transitions 0/34 dead transitions. [2023-09-01 06:13:15,819 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 34 transitions, 204 flow [2023-09-01 06:13:15,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 06:13:15,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 06:13:15,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 853 transitions. [2023-09-01 06:13:15,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5041371158392435 [2023-09-01 06:13:15,823 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 853 transitions. [2023-09-01 06:13:15,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 853 transitions. [2023-09-01 06:13:15,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:13:15,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 853 transitions. [2023-09-01 06:13:15,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 71.08333333333333) internal successors, (853), 12 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:15,828 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 141.0) internal successors, (1833), 13 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:15,828 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 141.0) internal successors, (1833), 13 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:15,828 INFO L175 Difference]: Start difference. First operand has 37 places, 28 transitions, 102 flow. Second operand 12 states and 853 transitions. [2023-09-01 06:13:15,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 34 transitions, 204 flow [2023-09-01 06:13:15,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 34 transitions, 201 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 06:13:15,831 INFO L231 Difference]: Finished difference. Result has 53 places, 34 transitions, 183 flow [2023-09-01 06:13:15,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=183, PETRI_PLACES=53, PETRI_TRANSITIONS=34} [2023-09-01 06:13:15,831 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 26 predicate places. [2023-09-01 06:13:15,832 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 34 transitions, 183 flow [2023-09-01 06:13:15,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 69.5) internal successors, (834), 12 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:15,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:13:15,832 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:13:15,841 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-09-01 06:13:16,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:13:16,042 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-09-01 06:13:16,042 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:13:16,042 INFO L85 PathProgramCache]: Analyzing trace with hash -429737442, now seen corresponding path program 2 times [2023-09-01 06:13:16,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:13:16,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852026046] [2023-09-01 06:13:16,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:13:16,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:13:16,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:13:16,367 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-09-01 06:13:16,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:13:16,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852026046] [2023-09-01 06:13:16,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852026046] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:13:16,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 06:13:16,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 06:13:16,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513418688] [2023-09-01 06:13:16,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:13:16,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 06:13:16,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:13:16,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 06:13:16,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 06:13:16,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 141 [2023-09-01 06:13:16,425 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 34 transitions, 183 flow. Second operand has 4 states, 4 states have (on average 70.25) internal successors, (281), 4 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:16,425 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:13:16,425 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 141 [2023-09-01 06:13:16,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:13:16,496 INFO L130 PetriNetUnfolder]: 49/130 cut-off events. [2023-09-01 06:13:16,497 INFO L131 PetriNetUnfolder]: For 46/46 co-relation queries the response was YES. [2023-09-01 06:13:16,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 350 conditions, 130 events. 49/130 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 392 event pairs, 20 based on Foata normal form. 2/109 useless extension candidates. Maximal degree in co-relation 329. Up to 90 conditions per place. [2023-09-01 06:13:16,498 INFO L137 encePairwiseOnDemand]: 137/141 looper letters, 31 selfloop transitions, 3 changer transitions 0/35 dead transitions. [2023-09-01 06:13:16,498 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 35 transitions, 249 flow [2023-09-01 06:13:16,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 06:13:16,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 06:13:16,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 229 transitions. [2023-09-01 06:13:16,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.541371158392435 [2023-09-01 06:13:16,499 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 229 transitions. [2023-09-01 06:13:16,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 229 transitions. [2023-09-01 06:13:16,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:13:16,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 229 transitions. [2023-09-01 06:13:16,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:16,501 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:16,502 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:16,502 INFO L175 Difference]: Start difference. First operand has 53 places, 34 transitions, 183 flow. Second operand 3 states and 229 transitions. [2023-09-01 06:13:16,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 35 transitions, 249 flow [2023-09-01 06:13:16,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 35 transitions, 201 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-09-01 06:13:16,505 INFO L231 Difference]: Finished difference. Result has 48 places, 32 transitions, 133 flow [2023-09-01 06:13:16,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=133, PETRI_PLACES=48, PETRI_TRANSITIONS=32} [2023-09-01 06:13:16,506 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 21 predicate places. [2023-09-01 06:13:16,506 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 32 transitions, 133 flow [2023-09-01 06:13:16,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.25) internal successors, (281), 4 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:16,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:13:16,507 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:13:16,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 06:13:16,507 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-09-01 06:13:16,508 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:13:16,508 INFO L85 PathProgramCache]: Analyzing trace with hash -429730039, now seen corresponding path program 1 times [2023-09-01 06:13:16,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:13:16,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392494392] [2023-09-01 06:13:16,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:13:16,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:13:16,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:13:16,676 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-09-01 06:13:16,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:13:16,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392494392] [2023-09-01 06:13:16,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392494392] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:13:16,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 06:13:16,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 06:13:16,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380361618] [2023-09-01 06:13:16,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:13:16,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 06:13:16,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:13:16,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 06:13:16,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 06:13:16,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 141 [2023-09-01 06:13:16,718 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 32 transitions, 133 flow. Second operand has 4 states, 4 states have (on average 69.25) internal successors, (277), 4 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:16,718 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:13:16,718 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 141 [2023-09-01 06:13:16,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:13:16,774 INFO L130 PetriNetUnfolder]: 33/98 cut-off events. [2023-09-01 06:13:16,774 INFO L131 PetriNetUnfolder]: For 62/62 co-relation queries the response was YES. [2023-09-01 06:13:16,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256 conditions, 98 events. 33/98 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 225 event pairs, 19 based on Foata normal form. 3/95 useless extension candidates. Maximal degree in co-relation 235. Up to 53 conditions per place. [2023-09-01 06:13:16,776 INFO L137 encePairwiseOnDemand]: 134/141 looper letters, 31 selfloop transitions, 4 changer transitions 4/40 dead transitions. [2023-09-01 06:13:16,776 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 40 transitions, 229 flow [2023-09-01 06:13:16,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 06:13:16,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 06:13:16,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 233 transitions. [2023-09-01 06:13:16,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5508274231678487 [2023-09-01 06:13:16,778 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 233 transitions. [2023-09-01 06:13:16,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 233 transitions. [2023-09-01 06:13:16,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:13:16,778 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 233 transitions. [2023-09-01 06:13:16,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:16,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:16,780 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:16,780 INFO L175 Difference]: Start difference. First operand has 48 places, 32 transitions, 133 flow. Second operand 3 states and 233 transitions. [2023-09-01 06:13:16,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 40 transitions, 229 flow [2023-09-01 06:13:16,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 40 transitions, 223 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 06:13:16,782 INFO L231 Difference]: Finished difference. Result has 49 places, 32 transitions, 147 flow [2023-09-01 06:13:16,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=147, PETRI_PLACES=49, PETRI_TRANSITIONS=32} [2023-09-01 06:13:16,783 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 22 predicate places. [2023-09-01 06:13:16,783 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 32 transitions, 147 flow [2023-09-01 06:13:16,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.25) internal successors, (277), 4 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:16,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:13:16,784 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:13:16,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 06:13:16,784 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-09-01 06:13:16,785 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:13:16,785 INFO L85 PathProgramCache]: Analyzing trace with hash 400852491, now seen corresponding path program 1 times [2023-09-01 06:13:16,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:13:16,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209471918] [2023-09-01 06:13:16,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:13:16,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:13:16,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:13:16,958 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-09-01 06:13:16,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:13:16,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209471918] [2023-09-01 06:13:16,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209471918] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:13:16,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 06:13:16,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 06:13:16,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392091271] [2023-09-01 06:13:16,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:13:16,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 06:13:16,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:13:16,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 06:13:16,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 06:13:16,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 141 [2023-09-01 06:13:16,979 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 32 transitions, 147 flow. Second operand has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:16,979 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:13:16,979 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 141 [2023-09-01 06:13:16,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:13:17,013 INFO L130 PetriNetUnfolder]: 17/66 cut-off events. [2023-09-01 06:13:17,013 INFO L131 PetriNetUnfolder]: For 54/54 co-relation queries the response was YES. [2023-09-01 06:13:17,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204 conditions, 66 events. 17/66 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 137 event pairs, 2 based on Foata normal form. 6/70 useless extension candidates. Maximal degree in co-relation 182. Up to 38 conditions per place. [2023-09-01 06:13:17,014 INFO L137 encePairwiseOnDemand]: 137/141 looper letters, 33 selfloop transitions, 4 changer transitions 0/37 dead transitions. [2023-09-01 06:13:17,014 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 37 transitions, 235 flow [2023-09-01 06:13:17,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 06:13:17,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 06:13:17,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 227 transitions. [2023-09-01 06:13:17,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5366430260047281 [2023-09-01 06:13:17,015 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 227 transitions. [2023-09-01 06:13:17,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 227 transitions. [2023-09-01 06:13:17,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:13:17,016 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 227 transitions. [2023-09-01 06:13:17,016 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:17,017 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:17,017 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:17,017 INFO L175 Difference]: Start difference. First operand has 49 places, 32 transitions, 147 flow. Second operand 3 states and 227 transitions. [2023-09-01 06:13:17,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 37 transitions, 235 flow [2023-09-01 06:13:17,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 37 transitions, 231 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 06:13:17,021 INFO L231 Difference]: Finished difference. Result has 50 places, 32 transitions, 151 flow [2023-09-01 06:13:17,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=151, PETRI_PLACES=50, PETRI_TRANSITIONS=32} [2023-09-01 06:13:17,024 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 23 predicate places. [2023-09-01 06:13:17,024 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 32 transitions, 151 flow [2023-09-01 06:13:17,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:17,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:13:17,024 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:13:17,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 06:13:17,025 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-09-01 06:13:17,025 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:13:17,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1687487447, now seen corresponding path program 1 times [2023-09-01 06:13:17,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:13:17,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106020772] [2023-09-01 06:13:17,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:13:17,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:13:17,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:13:17,374 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-09-01 06:13:17,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:13:17,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106020772] [2023-09-01 06:13:17,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106020772] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:13:17,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 06:13:17,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 06:13:17,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985499419] [2023-09-01 06:13:17,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:13:17,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 06:13:17,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:13:17,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 06:13:17,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-09-01 06:13:17,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 141 [2023-09-01 06:13:17,436 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 32 transitions, 151 flow. Second operand has 6 states, 6 states have (on average 67.16666666666667) internal successors, (403), 6 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:17,436 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:13:17,436 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 141 [2023-09-01 06:13:17,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:13:17,509 INFO L130 PetriNetUnfolder]: 17/65 cut-off events. [2023-09-01 06:13:17,509 INFO L131 PetriNetUnfolder]: For 61/61 co-relation queries the response was YES. [2023-09-01 06:13:17,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207 conditions, 65 events. 17/65 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 118 event pairs, 6 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 185. Up to 28 conditions per place. [2023-09-01 06:13:17,511 INFO L137 encePairwiseOnDemand]: 135/141 looper letters, 32 selfloop transitions, 6 changer transitions 2/41 dead transitions. [2023-09-01 06:13:17,512 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 41 transitions, 251 flow [2023-09-01 06:13:17,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 06:13:17,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 06:13:17,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 355 transitions. [2023-09-01 06:13:17,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5035460992907801 [2023-09-01 06:13:17,513 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 355 transitions. [2023-09-01 06:13:17,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 355 transitions. [2023-09-01 06:13:17,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:13:17,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 355 transitions. [2023-09-01 06:13:17,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 71.0) internal successors, (355), 5 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:17,517 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:17,517 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:17,517 INFO L175 Difference]: Start difference. First operand has 50 places, 32 transitions, 151 flow. Second operand 5 states and 355 transitions. [2023-09-01 06:13:17,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 41 transitions, 251 flow [2023-09-01 06:13:17,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 41 transitions, 246 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 06:13:17,519 INFO L231 Difference]: Finished difference. Result has 52 places, 31 transitions, 155 flow [2023-09-01 06:13:17,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=155, PETRI_PLACES=52, PETRI_TRANSITIONS=31} [2023-09-01 06:13:17,520 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 25 predicate places. [2023-09-01 06:13:17,521 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 31 transitions, 155 flow [2023-09-01 06:13:17,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 67.16666666666667) internal successors, (403), 6 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:17,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:13:17,521 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:13:17,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 06:13:17,523 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-09-01 06:13:17,523 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:13:17,523 INFO L85 PathProgramCache]: Analyzing trace with hash 2110340239, now seen corresponding path program 1 times [2023-09-01 06:13:17,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:13:17,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558630270] [2023-09-01 06:13:17,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:13:17,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:13:17,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:13:17,692 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-09-01 06:13:17,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:13:17,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558630270] [2023-09-01 06:13:17,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558630270] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:13:17,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 06:13:17,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 06:13:17,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176456397] [2023-09-01 06:13:17,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:13:17,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 06:13:17,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:13:17,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 06:13:17,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 06:13:17,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 141 [2023-09-01 06:13:17,709 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 31 transitions, 155 flow. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:17,709 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:13:17,709 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 141 [2023-09-01 06:13:17,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:13:17,749 INFO L130 PetriNetUnfolder]: 17/63 cut-off events. [2023-09-01 06:13:17,749 INFO L131 PetriNetUnfolder]: For 78/78 co-relation queries the response was YES. [2023-09-01 06:13:17,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208 conditions, 63 events. 17/63 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 104 event pairs, 10 based on Foata normal form. 1/64 useless extension candidates. Maximal degree in co-relation 184. Up to 32 conditions per place. [2023-09-01 06:13:17,750 INFO L137 encePairwiseOnDemand]: 136/141 looper letters, 21 selfloop transitions, 3 changer transitions 9/34 dead transitions. [2023-09-01 06:13:17,750 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 34 transitions, 225 flow [2023-09-01 06:13:17,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 06:13:17,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 06:13:17,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 227 transitions. [2023-09-01 06:13:17,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5366430260047281 [2023-09-01 06:13:17,752 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 227 transitions. [2023-09-01 06:13:17,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 227 transitions. [2023-09-01 06:13:17,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:13:17,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 227 transitions. [2023-09-01 06:13:17,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:17,755 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:17,755 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:17,755 INFO L175 Difference]: Start difference. First operand has 52 places, 31 transitions, 155 flow. Second operand 3 states and 227 transitions. [2023-09-01 06:13:17,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 34 transitions, 225 flow [2023-09-01 06:13:17,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 34 transitions, 218 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 06:13:17,759 INFO L231 Difference]: Finished difference. Result has 51 places, 25 transitions, 128 flow [2023-09-01 06:13:17,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=51, PETRI_TRANSITIONS=25} [2023-09-01 06:13:17,760 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 24 predicate places. [2023-09-01 06:13:17,760 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 25 transitions, 128 flow [2023-09-01 06:13:17,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:17,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:13:17,761 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:13:17,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 06:13:17,761 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-09-01 06:13:17,761 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:13:17,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1202087536, now seen corresponding path program 1 times [2023-09-01 06:13:17,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:13:17,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907303747] [2023-09-01 06:13:17,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:13:17,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:13:17,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:13:17,885 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-09-01 06:13:17,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:13:17,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907303747] [2023-09-01 06:13:17,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907303747] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:13:17,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 06:13:17,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 06:13:17,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985454950] [2023-09-01 06:13:17,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:13:17,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 06:13:17,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:13:17,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 06:13:17,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 06:13:17,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 141 [2023-09-01 06:13:17,918 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 25 transitions, 128 flow. Second operand has 4 states, 4 states have (on average 65.25) internal successors, (261), 4 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:17,918 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:13:17,918 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 141 [2023-09-01 06:13:17,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:13:17,953 INFO L130 PetriNetUnfolder]: 5/33 cut-off events. [2023-09-01 06:13:17,953 INFO L131 PetriNetUnfolder]: For 66/66 co-relation queries the response was YES. [2023-09-01 06:13:17,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 33 events. 5/33 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 14 event pairs, 4 based on Foata normal form. 1/34 useless extension candidates. Maximal degree in co-relation 96. Up to 16 conditions per place. [2023-09-01 06:13:17,954 INFO L137 encePairwiseOnDemand]: 135/141 looper letters, 18 selfloop transitions, 5 changer transitions 1/25 dead transitions. [2023-09-01 06:13:17,954 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 25 transitions, 171 flow [2023-09-01 06:13:17,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 06:13:17,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 06:13:17,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 325 transitions. [2023-09-01 06:13:17,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46099290780141844 [2023-09-01 06:13:17,956 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 325 transitions. [2023-09-01 06:13:17,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 325 transitions. [2023-09-01 06:13:17,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:13:17,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 325 transitions. [2023-09-01 06:13:17,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 65.0) internal successors, (325), 5 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:17,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:17,959 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:17,959 INFO L175 Difference]: Start difference. First operand has 51 places, 25 transitions, 128 flow. Second operand 5 states and 325 transitions. [2023-09-01 06:13:17,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 25 transitions, 171 flow [2023-09-01 06:13:17,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 25 transitions, 155 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-09-01 06:13:17,960 INFO L231 Difference]: Finished difference. Result has 44 places, 24 transitions, 114 flow [2023-09-01 06:13:17,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=114, PETRI_PLACES=44, PETRI_TRANSITIONS=24} [2023-09-01 06:13:17,961 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 17 predicate places. [2023-09-01 06:13:17,961 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 24 transitions, 114 flow [2023-09-01 06:13:17,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.25) internal successors, (261), 4 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:17,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:13:17,962 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:13:17,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 06:13:17,962 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-09-01 06:13:17,962 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:13:17,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1202087540, now seen corresponding path program 1 times [2023-09-01 06:13:17,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:13:17,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090575713] [2023-09-01 06:13:17,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:13:17,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:13:17,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:13:18,214 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-09-01 06:13:18,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:13:18,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090575713] [2023-09-01 06:13:18,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090575713] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:13:18,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 06:13:18,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 06:13:18,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738942429] [2023-09-01 06:13:18,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:13:18,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 06:13:18,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:13:18,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 06:13:18,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-09-01 06:13:18,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 141 [2023-09-01 06:13:18,277 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 24 transitions, 114 flow. Second operand has 6 states, 6 states have (on average 64.16666666666667) internal successors, (385), 6 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:18,277 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:13:18,277 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 141 [2023-09-01 06:13:18,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:13:18,316 INFO L130 PetriNetUnfolder]: 5/32 cut-off events. [2023-09-01 06:13:18,317 INFO L131 PetriNetUnfolder]: For 61/61 co-relation queries the response was YES. [2023-09-01 06:13:18,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 32 events. 5/32 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 14 event pairs, 4 based on Foata normal form. 1/33 useless extension candidates. Maximal degree in co-relation 91. Up to 27 conditions per place. [2023-09-01 06:13:18,317 INFO L137 encePairwiseOnDemand]: 136/141 looper letters, 0 selfloop transitions, 0 changer transitions 24/24 dead transitions. [2023-09-01 06:13:18,317 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 24 transitions, 159 flow [2023-09-01 06:13:18,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 06:13:18,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 06:13:18,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 386 transitions. [2023-09-01 06:13:18,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4562647754137116 [2023-09-01 06:13:18,319 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 386 transitions. [2023-09-01 06:13:18,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 386 transitions. [2023-09-01 06:13:18,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:13:18,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 386 transitions. [2023-09-01 06:13:18,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 64.33333333333333) internal successors, (386), 6 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) [2023-09-01 06:13:18,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 141.0) internal successors, (987), 7 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:18,322 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 141.0) internal successors, (987), 7 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:18,322 INFO L175 Difference]: Start difference. First operand has 44 places, 24 transitions, 114 flow. Second operand 6 states and 386 transitions. [2023-09-01 06:13:18,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 24 transitions, 159 flow [2023-09-01 06:13:18,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 24 transitions, 147 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-09-01 06:13:18,325 INFO L231 Difference]: Finished difference. Result has 43 places, 0 transitions, 0 flow [2023-09-01 06:13:18,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=43, PETRI_TRANSITIONS=0} [2023-09-01 06:13:18,326 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 16 predicate places. [2023-09-01 06:13:18,326 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 0 transitions, 0 flow [2023-09-01 06:13:18,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 64.16666666666667) internal successors, (385), 6 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:13:18,328 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 11 remaining) [2023-09-01 06:13:18,329 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2023-09-01 06:13:18,329 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 11 remaining) [2023-09-01 06:13:18,329 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 11 remaining) [2023-09-01 06:13:18,329 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 11 remaining) [2023-09-01 06:13:18,329 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 11 remaining) [2023-09-01 06:13:18,330 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 11 remaining) [2023-09-01 06:13:18,330 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2023-09-01 06:13:18,330 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2023-09-01 06:13:18,330 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 11 remaining) [2023-09-01 06:13:18,330 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2023-09-01 06:13:18,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 06:13:18,331 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:13:18,335 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 06:13:18,335 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 06:13:18,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 06:13:18 BasicIcfg [2023-09-01 06:13:18,340 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 06:13:18,340 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 06:13:18,340 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 06:13:18,340 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 06:13:18,341 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 06:13:11" (3/4) ... [2023-09-01 06:13:18,343 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-09-01 06:13:18,348 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2023-09-01 06:13:18,352 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2023-09-01 06:13:18,352 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-09-01 06:13:18,352 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-09-01 06:13:18,387 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 06:13:18,387 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 06:13:18,388 INFO L158 Benchmark]: Toolchain (without parser) took 7618.13ms. Allocated memory was 86.0MB in the beginning and 130.0MB in the end (delta: 44.0MB). Free memory was 62.4MB in the beginning and 63.2MB in the end (delta: -725.6kB). Peak memory consumption was 46.0MB. Max. memory is 16.1GB. [2023-09-01 06:13:18,388 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 62.9MB. Free memory was 41.1MB in the beginning and 41.0MB in the end (delta: 97.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 06:13:18,389 INFO L158 Benchmark]: CACSL2BoogieTranslator took 411.89ms. Allocated memory is still 86.0MB. Free memory was 62.2MB in the beginning and 63.7MB in the end (delta: -1.5MB). Peak memory consumption was 23.7MB. Max. memory is 16.1GB. [2023-09-01 06:13:18,389 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.62ms. Allocated memory is still 86.0MB. Free memory was 63.7MB in the beginning and 62.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 06:13:18,390 INFO L158 Benchmark]: Boogie Preprocessor took 47.58ms. Allocated memory is still 86.0MB. Free memory was 62.0MB in the beginning and 60.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 06:13:18,390 INFO L158 Benchmark]: RCFGBuilder took 451.12ms. Allocated memory is still 86.0MB. Free memory was 60.4MB in the beginning and 46.9MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-09-01 06:13:18,390 INFO L158 Benchmark]: TraceAbstraction took 6590.44ms. Allocated memory was 86.0MB in the beginning and 130.0MB in the end (delta: 44.0MB). Free memory was 46.2MB in the beginning and 66.3MB in the end (delta: -20.1MB). Peak memory consumption was 24.4MB. Max. memory is 16.1GB. [2023-09-01 06:13:18,391 INFO L158 Benchmark]: Witness Printer took 47.03ms. Allocated memory is still 130.0MB. Free memory was 66.3MB in the beginning and 63.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 06:13:18,393 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 62.9MB. Free memory was 41.1MB in the beginning and 41.0MB in the end (delta: 97.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 411.89ms. Allocated memory is still 86.0MB. Free memory was 62.2MB in the beginning and 63.7MB in the end (delta: -1.5MB). Peak memory consumption was 23.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.62ms. Allocated memory is still 86.0MB. Free memory was 63.7MB in the beginning and 62.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.58ms. Allocated memory is still 86.0MB. Free memory was 62.0MB in the beginning and 60.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 451.12ms. Allocated memory is still 86.0MB. Free memory was 60.4MB in the beginning and 46.9MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 6590.44ms. Allocated memory was 86.0MB in the beginning and 130.0MB in the end (delta: 44.0MB). Free memory was 46.2MB in the beginning and 66.3MB in the end (delta: -20.1MB). Peak memory consumption was 24.4MB. Max. memory is 16.1GB. * Witness Printer took 47.03ms. Allocated memory is still 130.0MB. Free memory was 66.3MB in the beginning and 63.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.7s, 76 PlacesBefore, 27 PlacesAfterwards, 74 TransitionsBefore, 24 TransitionsAfterwards, 930 CoEnabledTransitionPairs, 4 FixpointIterations, 23 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 66 TotalNumberOfCompositions, 1501 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 989, independent: 889, independent conditional: 0, independent unconditional: 889, dependent: 100, dependent conditional: 0, dependent unconditional: 100, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 507, independent: 477, independent conditional: 0, independent unconditional: 477, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 989, independent: 412, independent conditional: 0, independent unconditional: 412, dependent: 70, dependent conditional: 0, dependent unconditional: 70, unknown: 507, unknown conditional: 0, unknown unconditional: 507] , Statistics on independence cache: Total cache size (in pairs): 63, Positive cache size: 46, Positive conditional cache size: 0, Positive unconditional cache size: 46, Negative cache size: 17, Negative conditional cache size: 0, Negative unconditional cache size: 17, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 688]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 688]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 693]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 693]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 696]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 696]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 683]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 683]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 91 locations, 11 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.4s, OverallIterations: 12, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 564 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 314 mSDsluCounter, 164 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 113 mSDsCounter, 96 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 929 IncrementalHoareTripleChecker+Invalid, 1025 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 96 mSolverCounterUnsat, 51 mSDtfsCounter, 929 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 94 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=183occurred in iteration=5, InterpolantAutomatonStates: 55, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 211 NumberOfCodeBlocks, 207 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 212 ConstructedInterpolants, 0 QuantifiedInterpolants, 1469 SizeOfPredicates, 3 NumberOfNonLiveVariables, 284 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 17 InterpolantComputations, 10 PerfectInterpolantSequences, 395/438 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-09-01 06:13:18,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE