./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_76-tricky_address3_racefree.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_76-tricky_address3_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 53e3b4cf7a6885129025777f14c3b33a959debd694827832fbe127376cb0a5f9 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 14:21:07,841 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 14:21:07,844 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 14:21:07,885 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 14:21:07,887 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 14:21:07,890 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 14:21:07,892 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 14:21:07,894 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 14:21:07,897 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 14:21:07,901 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 14:21:07,902 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 14:21:07,904 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 14:21:07,905 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 14:21:07,906 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 14:21:07,907 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 14:21:07,912 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 14:21:07,913 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 14:21:07,915 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 14:21:07,916 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 14:21:07,922 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 14:21:07,924 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 14:21:07,925 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 14:21:07,925 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 14:21:07,926 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 14:21:07,932 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 14:21:07,933 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 14:21:07,933 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 14:21:07,935 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 14:21:07,935 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 14:21:07,936 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 14:21:07,936 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 14:21:07,942 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 14:21:07,944 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 14:21:07,945 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 14:21:07,946 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 14:21:07,946 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 14:21:07,947 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 14:21:07,947 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 14:21:07,947 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 14:21:07,948 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 14:21:07,954 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 14:21:07,956 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 14:21:07,976 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 14:21:07,977 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 14:21:07,978 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 14:21:07,978 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 14:21:07,979 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 14:21:07,979 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 14:21:07,979 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 14:21:07,979 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 14:21:07,980 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 14:21:07,980 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 14:21:07,981 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 14:21:07,981 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 14:21:07,981 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 14:21:07,981 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 14:21:07,981 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 14:21:07,981 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 14:21:07,982 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 14:21:07,982 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 14:21:07,982 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 14:21:07,982 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 14:21:07,982 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 14:21:07,982 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 14:21:07,983 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 14:21:07,983 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 14:21:07,983 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 14:21:07,983 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 14:21:07,983 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:21:07,984 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 14:21:07,984 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 14:21:07,984 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 14:21:07,984 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 14:21:07,984 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 14:21:07,985 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 14:21:07,985 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 14:21:07,985 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 14:21:07,985 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 14:21:07,985 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 14:21:07,985 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 53e3b4cf7a6885129025777f14c3b33a959debd694827832fbe127376cb0a5f9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 14:21:08,284 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 14:21:08,304 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 14:21:08,306 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 14:21:08,307 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 14:21:08,308 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 14:21:08,309 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_76-tricky_address3_racefree.i [2023-08-30 14:21:09,521 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 14:21:09,823 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 14:21:09,824 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_76-tricky_address3_racefree.i [2023-08-30 14:21:09,843 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fcf17b876/337f9ed3d3094335a8c78fbee36e1761/FLAG97db933b4 [2023-08-30 14:21:09,864 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fcf17b876/337f9ed3d3094335a8c78fbee36e1761 [2023-08-30 14:21:09,867 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 14:21:09,868 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 14:21:09,872 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 14:21:09,872 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 14:21:09,875 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 14:21:09,875 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:21:09" (1/1) ... [2023-08-30 14:21:09,876 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21c56e49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:21:09, skipping insertion in model container [2023-08-30 14:21:09,877 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:21:09" (1/1) ... [2023-08-30 14:21:09,882 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 14:21:09,933 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 14:21:10,336 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_76-tricky_address3_racefree.i[41323,41336] [2023-08-30 14:21:10,377 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:21:10,399 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 14:21:10,440 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_76-tricky_address3_racefree.i[41323,41336] [2023-08-30 14:21:10,462 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:21:10,527 INFO L208 MainTranslator]: Completed translation [2023-08-30 14:21:10,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:21:10 WrapperNode [2023-08-30 14:21:10,527 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 14:21:10,529 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 14:21:10,529 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 14:21:10,529 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 14:21:10,540 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:21:10" (1/1) ... [2023-08-30 14:21:10,571 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:21:10" (1/1) ... [2023-08-30 14:21:10,607 INFO L138 Inliner]: procedures = 270, calls = 41, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 209 [2023-08-30 14:21:10,607 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 14:21:10,609 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 14:21:10,609 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 14:21:10,609 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 14:21:10,617 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:21:10" (1/1) ... [2023-08-30 14:21:10,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:21:10" (1/1) ... [2023-08-30 14:21:10,637 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:21:10" (1/1) ... [2023-08-30 14:21:10,642 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:21:10" (1/1) ... [2023-08-30 14:21:10,649 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:21:10" (1/1) ... [2023-08-30 14:21:10,664 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:21:10" (1/1) ... [2023-08-30 14:21:10,666 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:21:10" (1/1) ... [2023-08-30 14:21:10,667 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:21:10" (1/1) ... [2023-08-30 14:21:10,674 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 14:21:10,675 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 14:21:10,675 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 14:21:10,675 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 14:21:10,676 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:21:10" (1/1) ... [2023-08-30 14:21:10,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:21:10,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:21:10,712 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 14:21:10,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 14:21:10,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 14:21:10,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 14:21:10,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 14:21:10,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 14:21:10,753 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 14:21:10,753 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 14:21:10,753 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-30 14:21:10,753 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-30 14:21:10,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 14:21:10,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 14:21:10,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 14:21:10,755 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 14:21:10,892 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 14:21:10,894 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 14:21:11,194 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 14:21:11,202 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 14:21:11,206 INFO L302 CfgBuilder]: Removed 23 assume(true) statements. [2023-08-30 14:21:11,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:21:11 BoogieIcfgContainer [2023-08-30 14:21:11,210 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 14:21:11,211 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 14:21:11,211 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 14:21:11,213 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 14:21:11,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 02:21:09" (1/3) ... [2023-08-30 14:21:11,214 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a3fb31c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:21:11, skipping insertion in model container [2023-08-30 14:21:11,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:21:10" (2/3) ... [2023-08-30 14:21:11,214 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a3fb31c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:21:11, skipping insertion in model container [2023-08-30 14:21:11,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:21:11" (3/3) ... [2023-08-30 14:21:11,216 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_76-tricky_address3_racefree.i [2023-08-30 14:21:11,221 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 14:21:11,227 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 14:21:11,227 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-08-30 14:21:11,227 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 14:21:11,310 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-30 14:21:11,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 195 places, 223 transitions, 454 flow [2023-08-30 14:21:11,430 INFO L130 PetriNetUnfolder]: 45/300 cut-off events. [2023-08-30 14:21:11,430 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2023-08-30 14:21:11,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 300 events. 45/300 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 961 event pairs, 0 based on Foata normal form. 0/232 useless extension candidates. Maximal degree in co-relation 168. Up to 8 conditions per place. [2023-08-30 14:21:11,444 INFO L82 GeneralOperation]: Start removeDead. Operand has 195 places, 223 transitions, 454 flow [2023-08-30 14:21:11,450 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 193 places, 220 transitions, 448 flow [2023-08-30 14:21:11,454 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:21:11,462 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 193 places, 220 transitions, 448 flow [2023-08-30 14:21:11,464 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 193 places, 220 transitions, 448 flow [2023-08-30 14:21:11,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 193 places, 220 transitions, 448 flow [2023-08-30 14:21:11,505 INFO L130 PetriNetUnfolder]: 44/297 cut-off events. [2023-08-30 14:21:11,506 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2023-08-30 14:21:11,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303 conditions, 297 events. 44/297 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 962 event pairs, 0 based on Foata normal form. 0/230 useless extension candidates. Maximal degree in co-relation 168. Up to 8 conditions per place. [2023-08-30 14:21:11,515 INFO L119 LiptonReduction]: Number of co-enabled transitions 14268 [2023-08-30 14:21:14,939 INFO L134 LiptonReduction]: Checked pairs total: 24711 [2023-08-30 14:21:14,939 INFO L136 LiptonReduction]: Total number of compositions: 200 [2023-08-30 14:21:14,952 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:21:14,957 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;@67c3f1ff, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:21:14,957 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2023-08-30 14:21:14,959 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 14:21:14,960 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:21:14,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:21:14,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 14:21:14,961 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 14:21:14,964 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:21:14,965 INFO L85 PathProgramCache]: Analyzing trace with hash 28157, now seen corresponding path program 1 times [2023-08-30 14:21:14,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:21:14,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016225707] [2023-08-30 14:21:14,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:21:14,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:21:15,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:21:15,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:21:15,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:21:15,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016225707] [2023-08-30 14:21:15,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016225707] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:21:15,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:21:15,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:21:15,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736347126] [2023-08-30 14:21:15,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:21:15,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:21:15,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:21:15,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:21:15,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:21:15,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 423 [2023-08-30 14:21:15,212 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 81 transitions, 170 flow. Second operand has 3 states, 3 states have (on average 188.66666666666666) internal successors, (566), 3 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:15,215 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:21:15,215 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 423 [2023-08-30 14:21:15,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:21:15,370 INFO L130 PetriNetUnfolder]: 501/1044 cut-off events. [2023-08-30 14:21:15,371 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:21:15,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2034 conditions, 1044 events. 501/1044 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5673 event pairs, 456 based on Foata normal form. 112/838 useless extension candidates. Maximal degree in co-relation 1967. Up to 983 conditions per place. [2023-08-30 14:21:15,378 INFO L137 encePairwiseOnDemand]: 397/423 looper letters, 49 selfloop transitions, 1 changer transitions 0/56 dead transitions. [2023-08-30 14:21:15,379 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 56 transitions, 220 flow [2023-08-30 14:21:15,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:21:15,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:21:15,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 639 transitions. [2023-08-30 14:21:15,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5035460992907801 [2023-08-30 14:21:15,411 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 639 transitions. [2023-08-30 14:21:15,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 639 transitions. [2023-08-30 14:21:15,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:21:15,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 639 transitions. [2023-08-30 14:21:15,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 213.0) internal successors, (639), 3 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:15,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 423.0) internal successors, (1692), 4 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:15,425 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 423.0) internal successors, (1692), 4 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:15,426 INFO L175 Difference]: Start difference. First operand has 60 places, 81 transitions, 170 flow. Second operand 3 states and 639 transitions. [2023-08-30 14:21:15,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 56 transitions, 220 flow [2023-08-30 14:21:15,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 56 transitions, 220 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:21:15,431 INFO L231 Difference]: Finished difference. Result has 58 places, 56 transitions, 122 flow [2023-08-30 14:21:15,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=423, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=58, PETRI_TRANSITIONS=56} [2023-08-30 14:21:15,435 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, -2 predicate places. [2023-08-30 14:21:15,436 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 56 transitions, 122 flow [2023-08-30 14:21:15,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 188.66666666666666) internal successors, (566), 3 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:15,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:21:15,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 14:21:15,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 14:21:15,437 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 14:21:15,438 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:21:15,438 INFO L85 PathProgramCache]: Analyzing trace with hash 841224676, now seen corresponding path program 1 times [2023-08-30 14:21:15,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:21:15,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543633404] [2023-08-30 14:21:15,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:21:15,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:21:15,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:21:15,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:21:15,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:21:15,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543633404] [2023-08-30 14:21:15,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543633404] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:21:15,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:21:15,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:21:15,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636569495] [2023-08-30 14:21:15,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:21:15,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:21:15,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:21:15,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:21:15,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:21:15,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 423 [2023-08-30 14:21:15,497 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 56 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 189.66666666666666) internal successors, (569), 3 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:15,498 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:21:15,498 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 423 [2023-08-30 14:21:15,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:21:15,653 INFO L130 PetriNetUnfolder]: 501/1045 cut-off events. [2023-08-30 14:21:15,654 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:21:15,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2038 conditions, 1045 events. 501/1045 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5670 event pairs, 456 based on Foata normal form. 0/727 useless extension candidates. Maximal degree in co-relation 2031. Up to 984 conditions per place. [2023-08-30 14:21:15,659 INFO L137 encePairwiseOnDemand]: 420/423 looper letters, 49 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2023-08-30 14:21:15,659 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 57 transitions, 226 flow [2023-08-30 14:21:15,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:21:15,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:21:15,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 616 transitions. [2023-08-30 14:21:15,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4854215918045705 [2023-08-30 14:21:15,662 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 616 transitions. [2023-08-30 14:21:15,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 616 transitions. [2023-08-30 14:21:15,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:21:15,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 616 transitions. [2023-08-30 14:21:15,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 205.33333333333334) internal successors, (616), 3 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:15,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 423.0) internal successors, (1692), 4 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:15,668 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 423.0) internal successors, (1692), 4 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:15,668 INFO L175 Difference]: Start difference. First operand has 58 places, 56 transitions, 122 flow. Second operand 3 states and 616 transitions. [2023-08-30 14:21:15,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 57 transitions, 226 flow [2023-08-30 14:21:15,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 57 transitions, 225 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:21:15,671 INFO L231 Difference]: Finished difference. Result has 60 places, 57 transitions, 133 flow [2023-08-30 14:21:15,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=423, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=133, PETRI_PLACES=60, PETRI_TRANSITIONS=57} [2023-08-30 14:21:15,671 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 0 predicate places. [2023-08-30 14:21:15,672 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 57 transitions, 133 flow [2023-08-30 14:21:15,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 189.66666666666666) internal successors, (569), 3 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:15,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:21:15,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 14:21:15,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 14:21:15,673 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 14:21:15,673 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:21:15,674 INFO L85 PathProgramCache]: Analyzing trace with hash 297397015, now seen corresponding path program 1 times [2023-08-30 14:21:15,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:21:15,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582707836] [2023-08-30 14:21:15,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:21:15,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:21:15,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:21:15,727 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:21:15,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:21:15,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582707836] [2023-08-30 14:21:15,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582707836] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:21:15,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323786261] [2023-08-30 14:21:15,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:21:15,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:21:15,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:21:15,731 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:21:15,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 14:21:15,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:21:15,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 14:21:15,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:21:15,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:21:15,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:21:15,840 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:21:15,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1323786261] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:21:15,841 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:21:15,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-08-30 14:21:15,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841955304] [2023-08-30 14:21:15,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:21:15,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 14:21:15,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:21:15,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 14:21:15,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-30 14:21:15,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 423 [2023-08-30 14:21:15,858 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 57 transitions, 133 flow. Second operand has 6 states, 6 states have (on average 188.5) internal successors, (1131), 6 states have internal predecessors, (1131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:15,858 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:21:15,858 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 423 [2023-08-30 14:21:15,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:21:16,029 INFO L130 PetriNetUnfolder]: 501/1048 cut-off events. [2023-08-30 14:21:16,030 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:21:16,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2053 conditions, 1048 events. 501/1048 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5664 event pairs, 456 based on Foata normal form. 0/730 useless extension candidates. Maximal degree in co-relation 2044. Up to 984 conditions per place. [2023-08-30 14:21:16,035 INFO L137 encePairwiseOnDemand]: 420/423 looper letters, 49 selfloop transitions, 5 changer transitions 0/60 dead transitions. [2023-08-30 14:21:16,035 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 60 transitions, 253 flow [2023-08-30 14:21:16,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 14:21:16,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 14:21:16,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1179 transitions. [2023-08-30 14:21:16,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4645390070921986 [2023-08-30 14:21:16,039 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1179 transitions. [2023-08-30 14:21:16,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1179 transitions. [2023-08-30 14:21:16,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:21:16,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1179 transitions. [2023-08-30 14:21:16,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 196.5) internal successors, (1179), 6 states have internal predecessors, (1179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:16,046 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 423.0) internal successors, (2961), 7 states have internal predecessors, (2961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:16,047 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 423.0) internal successors, (2961), 7 states have internal predecessors, (2961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:16,047 INFO L175 Difference]: Start difference. First operand has 60 places, 57 transitions, 133 flow. Second operand 6 states and 1179 transitions. [2023-08-30 14:21:16,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 60 transitions, 253 flow [2023-08-30 14:21:16,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 60 transitions, 249 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 14:21:16,050 INFO L231 Difference]: Finished difference. Result has 67 places, 60 transitions, 165 flow [2023-08-30 14:21:16,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=423, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=165, PETRI_PLACES=67, PETRI_TRANSITIONS=60} [2023-08-30 14:21:16,051 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 7 predicate places. [2023-08-30 14:21:16,051 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 60 transitions, 165 flow [2023-08-30 14:21:16,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 188.5) internal successors, (1131), 6 states have internal predecessors, (1131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:16,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:21:16,052 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1] [2023-08-30 14:21:16,065 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-30 14:21:16,257 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 [2023-08-30 14:21:16,258 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 14:21:16,258 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:21:16,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1433028260, now seen corresponding path program 2 times [2023-08-30 14:21:16,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:21:16,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973432195] [2023-08-30 14:21:16,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:21:16,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:21:16,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:21:16,342 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 14:21:16,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:21:16,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973432195] [2023-08-30 14:21:16,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973432195] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:21:16,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:21:16,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:21:16,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574061318] [2023-08-30 14:21:16,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:21:16,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:21:16,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:21:16,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:21:16,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:21:16,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 423 [2023-08-30 14:21:16,356 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 60 transitions, 165 flow. Second operand has 3 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:16,356 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:21:16,356 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 423 [2023-08-30 14:21:16,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:21:16,559 INFO L130 PetriNetUnfolder]: 461/956 cut-off events. [2023-08-30 14:21:16,559 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 14:21:16,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1883 conditions, 956 events. 461/956 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 5089 event pairs, 252 based on Foata normal form. 0/699 useless extension candidates. Maximal degree in co-relation 1870. Up to 868 conditions per place. [2023-08-30 14:21:16,564 INFO L137 encePairwiseOnDemand]: 418/423 looper letters, 70 selfloop transitions, 2 changer transitions 0/78 dead transitions. [2023-08-30 14:21:16,564 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 78 transitions, 345 flow [2023-08-30 14:21:16,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:21:16,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:21:16,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 635 transitions. [2023-08-30 14:21:16,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5003940110323088 [2023-08-30 14:21:16,567 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 635 transitions. [2023-08-30 14:21:16,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 635 transitions. [2023-08-30 14:21:16,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:21:16,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 635 transitions. [2023-08-30 14:21:16,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 211.66666666666666) internal successors, (635), 3 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:16,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 423.0) internal successors, (1692), 4 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:16,573 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 423.0) internal successors, (1692), 4 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:16,574 INFO L175 Difference]: Start difference. First operand has 67 places, 60 transitions, 165 flow. Second operand 3 states and 635 transitions. [2023-08-30 14:21:16,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 78 transitions, 345 flow [2023-08-30 14:21:16,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 78 transitions, 331 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 14:21:16,579 INFO L231 Difference]: Finished difference. Result has 67 places, 58 transitions, 155 flow [2023-08-30 14:21:16,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=423, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=155, PETRI_PLACES=67, PETRI_TRANSITIONS=58} [2023-08-30 14:21:16,581 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 7 predicate places. [2023-08-30 14:21:16,581 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 58 transitions, 155 flow [2023-08-30 14:21:16,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:16,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:21:16,582 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2023-08-30 14:21:16,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 14:21:16,583 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 14:21:16,584 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:21:16,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1544283117, now seen corresponding path program 1 times [2023-08-30 14:21:16,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:21:16,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453875395] [2023-08-30 14:21:16,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:21:16,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:21:16,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:21:16,691 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 14:21:16,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:21:16,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453875395] [2023-08-30 14:21:16,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453875395] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:21:16,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210326584] [2023-08-30 14:21:16,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:21:16,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:21:16,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:21:16,697 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:21:16,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 14:21:16,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:21:16,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 14:21:16,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:21:16,810 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 14:21:16,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:21:16,859 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 14:21:16,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [210326584] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:21:16,860 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:21:16,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-08-30 14:21:16,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990406795] [2023-08-30 14:21:16,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:21:16,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 14:21:16,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:21:16,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 14:21:16,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-08-30 14:21:16,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 423 [2023-08-30 14:21:16,897 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 58 transitions, 155 flow. Second operand has 12 states, 12 states have (on average 188.25) internal successors, (2259), 12 states have internal predecessors, (2259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:16,897 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:21:16,897 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 423 [2023-08-30 14:21:16,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:21:17,095 INFO L130 PetriNetUnfolder]: 461/952 cut-off events. [2023-08-30 14:21:17,096 INFO L131 PetriNetUnfolder]: For 115/115 co-relation queries the response was YES. [2023-08-30 14:21:17,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1946 conditions, 952 events. 461/952 cut-off events. For 115/115 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 4922 event pairs, 418 based on Foata normal form. 6/715 useless extension candidates. Maximal degree in co-relation 1932. Up to 886 conditions per place. [2023-08-30 14:21:17,100 INFO L137 encePairwiseOnDemand]: 420/423 looper letters, 47 selfloop transitions, 11 changer transitions 0/64 dead transitions. [2023-08-30 14:21:17,100 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 64 transitions, 307 flow [2023-08-30 14:21:17,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 14:21:17,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 14:21:17,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2308 transitions. [2023-08-30 14:21:17,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45468873128447596 [2023-08-30 14:21:17,106 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2308 transitions. [2023-08-30 14:21:17,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2308 transitions. [2023-08-30 14:21:17,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:21:17,108 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2308 transitions. [2023-08-30 14:21:17,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 192.33333333333334) internal successors, (2308), 12 states have internal predecessors, (2308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:17,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 423.0) internal successors, (5499), 13 states have internal predecessors, (5499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:17,120 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 423.0) internal successors, (5499), 13 states have internal predecessors, (5499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:17,120 INFO L175 Difference]: Start difference. First operand has 67 places, 58 transitions, 155 flow. Second operand 12 states and 2308 transitions. [2023-08-30 14:21:17,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 64 transitions, 307 flow [2023-08-30 14:21:17,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 64 transitions, 303 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:21:17,123 INFO L231 Difference]: Finished difference. Result has 82 places, 64 transitions, 235 flow [2023-08-30 14:21:17,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=423, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=235, PETRI_PLACES=82, PETRI_TRANSITIONS=64} [2023-08-30 14:21:17,124 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 22 predicate places. [2023-08-30 14:21:17,124 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 64 transitions, 235 flow [2023-08-30 14:21:17,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 188.25) internal successors, (2259), 12 states have internal predecessors, (2259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:17,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:21:17,125 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2023-08-30 14:21:17,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 14:21:17,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:21:17,333 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 14:21:17,334 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:21:17,334 INFO L85 PathProgramCache]: Analyzing trace with hash -122261709, now seen corresponding path program 2 times [2023-08-30 14:21:17,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:21:17,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143225999] [2023-08-30 14:21:17,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:21:17,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:21:17,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:21:17,366 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 14:21:17,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:21:17,428 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 14:21:17,429 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 14:21:17,430 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 23 remaining) [2023-08-30 14:21:17,431 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 23 remaining) [2023-08-30 14:21:17,431 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 23 remaining) [2023-08-30 14:21:17,431 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 23 remaining) [2023-08-30 14:21:17,432 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 23 remaining) [2023-08-30 14:21:17,432 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 23 remaining) [2023-08-30 14:21:17,432 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 23 remaining) [2023-08-30 14:21:17,432 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 23 remaining) [2023-08-30 14:21:17,432 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 23 remaining) [2023-08-30 14:21:17,433 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 23 remaining) [2023-08-30 14:21:17,433 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 23 remaining) [2023-08-30 14:21:17,434 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 23 remaining) [2023-08-30 14:21:17,434 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 23 remaining) [2023-08-30 14:21:17,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 23 remaining) [2023-08-30 14:21:17,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 23 remaining) [2023-08-30 14:21:17,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 23 remaining) [2023-08-30 14:21:17,436 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 23 remaining) [2023-08-30 14:21:17,436 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 23 remaining) [2023-08-30 14:21:17,436 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 23 remaining) [2023-08-30 14:21:17,440 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 23 remaining) [2023-08-30 14:21:17,440 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 23 remaining) [2023-08-30 14:21:17,442 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 23 remaining) [2023-08-30 14:21:17,442 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 23 remaining) [2023-08-30 14:21:17,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 14:21:17,443 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1] [2023-08-30 14:21:17,445 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 14:21:17,445 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-30 14:21:17,485 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 14:21:17,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 267 places, 307 transitions, 632 flow [2023-08-30 14:21:17,558 INFO L130 PetriNetUnfolder]: 75/497 cut-off events. [2023-08-30 14:21:17,558 INFO L131 PetriNetUnfolder]: For 6/8 co-relation queries the response was YES. [2023-08-30 14:21:17,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 511 conditions, 497 events. 75/497 cut-off events. For 6/8 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2021 event pairs, 0 based on Foata normal form. 0/382 useless extension candidates. Maximal degree in co-relation 302. Up to 12 conditions per place. [2023-08-30 14:21:17,561 INFO L82 GeneralOperation]: Start removeDead. Operand has 267 places, 307 transitions, 632 flow [2023-08-30 14:21:17,566 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 267 places, 307 transitions, 632 flow [2023-08-30 14:21:17,566 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:21:17,567 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 267 places, 307 transitions, 632 flow [2023-08-30 14:21:17,567 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 267 places, 307 transitions, 632 flow [2023-08-30 14:21:17,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 267 places, 307 transitions, 632 flow [2023-08-30 14:21:17,620 INFO L130 PetriNetUnfolder]: 75/497 cut-off events. [2023-08-30 14:21:17,620 INFO L131 PetriNetUnfolder]: For 6/8 co-relation queries the response was YES. [2023-08-30 14:21:17,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 511 conditions, 497 events. 75/497 cut-off events. For 6/8 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2021 event pairs, 0 based on Foata normal form. 0/382 useless extension candidates. Maximal degree in co-relation 302. Up to 12 conditions per place. [2023-08-30 14:21:17,645 INFO L119 LiptonReduction]: Number of co-enabled transitions 45100 [2023-08-30 14:21:21,580 INFO L134 LiptonReduction]: Checked pairs total: 79751 [2023-08-30 14:21:21,580 INFO L136 LiptonReduction]: Total number of compositions: 272 [2023-08-30 14:21:21,582 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:21:21,582 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;@67c3f1ff, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:21:21,582 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2023-08-30 14:21:21,583 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 14:21:21,583 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:21:21,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:21:21,584 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 14:21:21,584 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-30 14:21:21,584 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:21:21,584 INFO L85 PathProgramCache]: Analyzing trace with hash 49101, now seen corresponding path program 1 times [2023-08-30 14:21:21,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:21:21,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10106407] [2023-08-30 14:21:21,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:21:21,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:21:21,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:21:21,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:21:21,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:21:21,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10106407] [2023-08-30 14:21:21,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10106407] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:21:21,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:21:21,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:21:21,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633572435] [2023-08-30 14:21:21,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:21:21,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:21:21,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:21:21,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:21:21,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:21:21,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 579 [2023-08-30 14:21:21,618 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 119 transitions, 256 flow. Second operand has 3 states, 3 states have (on average 257.6666666666667) internal successors, (773), 3 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:21,618 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:21:21,618 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 579 [2023-08-30 14:21:21,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:21:23,802 INFO L130 PetriNetUnfolder]: 19341/29804 cut-off events. [2023-08-30 14:21:23,803 INFO L131 PetriNetUnfolder]: For 136/136 co-relation queries the response was YES. [2023-08-30 14:21:23,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58386 conditions, 29804 events. 19341/29804 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 1067. Compared 211496 event pairs, 18264 based on Foata normal form. 3745/24741 useless extension candidates. Maximal degree in co-relation 34945. Up to 28466 conditions per place. [2023-08-30 14:21:23,981 INFO L137 encePairwiseOnDemand]: 539/579 looper letters, 71 selfloop transitions, 2 changer transitions 0/84 dead transitions. [2023-08-30 14:21:23,981 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 84 transitions, 332 flow [2023-08-30 14:21:23,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:21:23,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:21:23,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 883 transitions. [2023-08-30 14:21:23,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5083477259643063 [2023-08-30 14:21:23,985 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 883 transitions. [2023-08-30 14:21:23,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 883 transitions. [2023-08-30 14:21:23,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:21:23,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 883 transitions. [2023-08-30 14:21:23,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 294.3333333333333) internal successors, (883), 3 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:23,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 579.0) internal successors, (2316), 4 states have internal predecessors, (2316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:23,991 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 579.0) internal successors, (2316), 4 states have internal predecessors, (2316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:23,991 INFO L175 Difference]: Start difference. First operand has 87 places, 119 transitions, 256 flow. Second operand 3 states and 883 transitions. [2023-08-30 14:21:23,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 84 transitions, 332 flow [2023-08-30 14:21:23,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 84 transitions, 332 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:21:23,995 INFO L231 Difference]: Finished difference. Result has 85 places, 84 transitions, 198 flow [2023-08-30 14:21:23,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=579, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=85, PETRI_TRANSITIONS=84} [2023-08-30 14:21:23,997 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, -2 predicate places. [2023-08-30 14:21:23,997 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 84 transitions, 198 flow [2023-08-30 14:21:23,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 257.6666666666667) internal successors, (773), 3 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:23,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:21:23,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 14:21:23,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 14:21:23,999 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-30 14:21:23,999 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:21:23,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1524794, now seen corresponding path program 1 times [2023-08-30 14:21:23,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:21:24,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636361918] [2023-08-30 14:21:24,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:21:24,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:21:24,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:21:24,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:21:24,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:21:24,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636361918] [2023-08-30 14:21:24,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636361918] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:21:24,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001940341] [2023-08-30 14:21:24,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:21:24,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:21:24,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:21:24,043 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:21:24,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 14:21:24,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:21:24,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 14:21:24,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:21:24,118 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:21:24,118 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:21:24,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001940341] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:21:24,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:21:24,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-30 14:21:24,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877191959] [2023-08-30 14:21:24,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:21:24,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:21:24,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:21:24,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:21:24,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:21:24,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 579 [2023-08-30 14:21:24,131 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 84 transitions, 198 flow. Second operand has 4 states, 4 states have (on average 257.75) internal successors, (1031), 4 states have internal predecessors, (1031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:24,132 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:21:24,132 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 579 [2023-08-30 14:21:24,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:21:25,804 INFO L130 PetriNetUnfolder]: 19341/29803 cut-off events. [2023-08-30 14:21:25,804 INFO L131 PetriNetUnfolder]: For 136/136 co-relation queries the response was YES. [2023-08-30 14:21:25,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58391 conditions, 29803 events. 19341/29803 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 1067. Compared 211420 event pairs, 18264 based on Foata normal form. 0/20996 useless extension candidates. Maximal degree in co-relation 58378. Up to 28464 conditions per place. [2023-08-30 14:21:25,971 INFO L137 encePairwiseOnDemand]: 576/579 looper letters, 70 selfloop transitions, 2 changer transitions 0/83 dead transitions. [2023-08-30 14:21:25,972 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 83 transitions, 338 flow [2023-08-30 14:21:25,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 14:21:25,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 14:21:25,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1101 transitions. [2023-08-30 14:21:25,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47538860103626945 [2023-08-30 14:21:25,976 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1101 transitions. [2023-08-30 14:21:25,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1101 transitions. [2023-08-30 14:21:25,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:21:25,977 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1101 transitions. [2023-08-30 14:21:25,980 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 275.25) internal successors, (1101), 4 states have internal predecessors, (1101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:25,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 579.0) internal successors, (2895), 5 states have internal predecessors, (2895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:25,984 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 579.0) internal successors, (2895), 5 states have internal predecessors, (2895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:25,984 INFO L175 Difference]: Start difference. First operand has 85 places, 84 transitions, 198 flow. Second operand 4 states and 1101 transitions. [2023-08-30 14:21:25,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 83 transitions, 338 flow [2023-08-30 14:21:25,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 83 transitions, 334 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 14:21:25,991 INFO L231 Difference]: Finished difference. Result has 86 places, 83 transitions, 194 flow [2023-08-30 14:21:25,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=579, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=194, PETRI_PLACES=86, PETRI_TRANSITIONS=83} [2023-08-30 14:21:25,993 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, -1 predicate places. [2023-08-30 14:21:25,993 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 83 transitions, 194 flow [2023-08-30 14:21:25,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 257.75) internal successors, (1031), 4 states have internal predecessors, (1031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:25,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:21:25,994 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:21:26,002 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 14:21:26,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:21:26,200 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-30 14:21:26,200 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:21:26,200 INFO L85 PathProgramCache]: Analyzing trace with hash -482046086, now seen corresponding path program 1 times [2023-08-30 14:21:26,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:21:26,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837076969] [2023-08-30 14:21:26,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:21:26,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:21:26,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:21:26,259 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:21:26,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:21:26,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837076969] [2023-08-30 14:21:26,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837076969] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:21:26,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998830143] [2023-08-30 14:21:26,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:21:26,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:21:26,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:21:26,263 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:21:26,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 14:21:26,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:21:26,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 14:21:26,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:21:26,341 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:21:26,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:21:26,353 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:21:26,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998830143] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:21:26,353 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:21:26,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 14:21:26,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761668154] [2023-08-30 14:21:26,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:21:26,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 14:21:26,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:21:26,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 14:21:26,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 14:21:26,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 579 [2023-08-30 14:21:26,374 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 83 transitions, 194 flow. Second operand has 7 states, 7 states have (on average 257.57142857142856) internal successors, (1803), 7 states have internal predecessors, (1803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:26,374 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:21:26,375 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 579 [2023-08-30 14:21:26,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:21:28,086 INFO L130 PetriNetUnfolder]: 19341/29806 cut-off events. [2023-08-30 14:21:28,086 INFO L131 PetriNetUnfolder]: For 136/136 co-relation queries the response was YES. [2023-08-30 14:21:28,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58400 conditions, 29806 events. 19341/29806 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 1067. Compared 211421 event pairs, 18264 based on Foata normal form. 0/20999 useless extension candidates. Maximal degree in co-relation 58387. Up to 28465 conditions per place. [2023-08-30 14:21:28,217 INFO L137 encePairwiseOnDemand]: 576/579 looper letters, 70 selfloop transitions, 5 changer transitions 0/86 dead transitions. [2023-08-30 14:21:28,217 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 86 transitions, 356 flow [2023-08-30 14:21:28,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 14:21:28,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 14:21:28,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1614 transitions. [2023-08-30 14:21:28,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46459412780656306 [2023-08-30 14:21:28,223 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1614 transitions. [2023-08-30 14:21:28,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1614 transitions. [2023-08-30 14:21:28,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:21:28,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1614 transitions. [2023-08-30 14:21:28,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:28,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 579.0) internal successors, (4053), 7 states have internal predecessors, (4053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:28,233 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 579.0) internal successors, (4053), 7 states have internal predecessors, (4053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:28,233 INFO L175 Difference]: Start difference. First operand has 86 places, 83 transitions, 194 flow. Second operand 6 states and 1614 transitions. [2023-08-30 14:21:28,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 86 transitions, 356 flow [2023-08-30 14:21:28,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 86 transitions, 353 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:21:28,235 INFO L231 Difference]: Finished difference. Result has 92 places, 86 transitions, 227 flow [2023-08-30 14:21:28,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=579, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=227, PETRI_PLACES=92, PETRI_TRANSITIONS=86} [2023-08-30 14:21:28,238 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 5 predicate places. [2023-08-30 14:21:28,238 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 86 transitions, 227 flow [2023-08-30 14:21:28,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 257.57142857142856) internal successors, (1803), 7 states have internal predecessors, (1803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:28,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:21:28,239 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2023-08-30 14:21:28,251 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 14:21:28,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:21:28,445 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-30 14:21:28,446 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:21:28,446 INFO L85 PathProgramCache]: Analyzing trace with hash -484147, now seen corresponding path program 2 times [2023-08-30 14:21:28,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:21:28,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325435888] [2023-08-30 14:21:28,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:21:28,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:21:28,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:21:28,493 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 14:21:28,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:21:28,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325435888] [2023-08-30 14:21:28,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325435888] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:21:28,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:21:28,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:21:28,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741855176] [2023-08-30 14:21:28,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:21:28,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:21:28,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:21:28,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:21:28,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:21:28,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 579 [2023-08-30 14:21:28,504 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 86 transitions, 227 flow. Second operand has 3 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:28,504 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:21:28,504 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 579 [2023-08-30 14:21:28,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:21:30,185 INFO L130 PetriNetUnfolder]: 19086/29598 cut-off events. [2023-08-30 14:21:30,185 INFO L131 PetriNetUnfolder]: For 99/99 co-relation queries the response was YES. [2023-08-30 14:21:30,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58140 conditions, 29598 events. 19086/29598 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 1079. Compared 213633 event pairs, 8778 based on Foata normal form. 0/20833 useless extension candidates. Maximal degree in co-relation 58123. Up to 28356 conditions per place. [2023-08-30 14:21:30,316 INFO L137 encePairwiseOnDemand]: 574/579 looper letters, 93 selfloop transitions, 2 changer transitions 0/106 dead transitions. [2023-08-30 14:21:30,317 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 106 transitions, 457 flow [2023-08-30 14:21:30,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:21:30,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:21:30,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 865 transitions. [2023-08-30 14:21:30,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49798503166378816 [2023-08-30 14:21:30,321 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 865 transitions. [2023-08-30 14:21:30,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 865 transitions. [2023-08-30 14:21:30,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:21:30,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 865 transitions. [2023-08-30 14:21:30,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 288.3333333333333) internal successors, (865), 3 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:30,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 579.0) internal successors, (2316), 4 states have internal predecessors, (2316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:30,329 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 579.0) internal successors, (2316), 4 states have internal predecessors, (2316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:30,329 INFO L175 Difference]: Start difference. First operand has 92 places, 86 transitions, 227 flow. Second operand 3 states and 865 transitions. [2023-08-30 14:21:30,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 106 transitions, 457 flow [2023-08-30 14:21:30,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 106 transitions, 443 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 14:21:30,333 INFO L231 Difference]: Finished difference. Result has 94 places, 87 transitions, 229 flow [2023-08-30 14:21:30,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=579, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=229, PETRI_PLACES=94, PETRI_TRANSITIONS=87} [2023-08-30 14:21:30,334 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 7 predicate places. [2023-08-30 14:21:30,334 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 87 transitions, 229 flow [2023-08-30 14:21:30,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:30,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:21:30,336 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:21:30,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 14:21:30,336 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-30 14:21:30,337 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:21:30,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1080636955, now seen corresponding path program 1 times [2023-08-30 14:21:30,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:21:30,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686557751] [2023-08-30 14:21:30,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:21:30,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:21:30,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:21:30,517 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:21:30,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:21:30,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686557751] [2023-08-30 14:21:30,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686557751] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:21:30,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551509438] [2023-08-30 14:21:30,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:21:30,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:21:30,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:21:30,520 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:21:30,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 14:21:30,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:21:30,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 14:21:30,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:21:30,612 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:21:30,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:21:30,660 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:21:30,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [551509438] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:21:30,660 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:21:30,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 14:21:30,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510030005] [2023-08-30 14:21:30,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:21:30,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 14:21:30,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:21:30,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 14:21:30,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-30 14:21:30,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 579 [2023-08-30 14:21:30,694 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 87 transitions, 229 flow. Second operand has 13 states, 13 states have (on average 257.53846153846155) internal successors, (3348), 13 states have internal predecessors, (3348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:30,694 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:21:30,694 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 579 [2023-08-30 14:21:30,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:21:32,438 INFO L130 PetriNetUnfolder]: 19428/29764 cut-off events. [2023-08-30 14:21:32,439 INFO L131 PetriNetUnfolder]: For 991/991 co-relation queries the response was YES. [2023-08-30 14:21:32,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59871 conditions, 29764 events. 19428/29764 cut-off events. For 991/991 co-relation queries the response was YES. Maximal size of possible extension queue 1074. Compared 208988 event pairs, 18228 based on Foata normal form. 6/21414 useless extension candidates. Maximal degree in co-relation 59853. Up to 28373 conditions per place. [2023-08-30 14:21:32,568 INFO L137 encePairwiseOnDemand]: 576/579 looper letters, 71 selfloop transitions, 11 changer transitions 0/93 dead transitions. [2023-08-30 14:21:32,568 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 93 transitions, 429 flow [2023-08-30 14:21:32,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 14:21:32,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 14:21:32,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3159 transitions. [2023-08-30 14:21:32,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45466321243523317 [2023-08-30 14:21:32,581 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3159 transitions. [2023-08-30 14:21:32,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3159 transitions. [2023-08-30 14:21:32,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:21:32,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3159 transitions. [2023-08-30 14:21:32,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 263.25) internal successors, (3159), 12 states have internal predecessors, (3159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:32,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 579.0) internal successors, (7527), 13 states have internal predecessors, (7527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:32,604 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 579.0) internal successors, (7527), 13 states have internal predecessors, (7527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:32,604 INFO L175 Difference]: Start difference. First operand has 94 places, 87 transitions, 229 flow. Second operand 12 states and 3159 transitions. [2023-08-30 14:21:32,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 93 transitions, 429 flow [2023-08-30 14:21:32,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 93 transitions, 427 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:21:32,607 INFO L231 Difference]: Finished difference. Result has 110 places, 93 transitions, 311 flow [2023-08-30 14:21:32,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=579, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=311, PETRI_PLACES=110, PETRI_TRANSITIONS=93} [2023-08-30 14:21:32,608 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 23 predicate places. [2023-08-30 14:21:32,608 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 93 transitions, 311 flow [2023-08-30 14:21:32,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 257.53846153846155) internal successors, (3348), 13 states have internal predecessors, (3348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:32,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:21:32,609 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:21:32,618 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 14:21:32,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-08-30 14:21:32,815 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-30 14:21:32,815 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:21:32,815 INFO L85 PathProgramCache]: Analyzing trace with hash 961318149, now seen corresponding path program 2 times [2023-08-30 14:21:32,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:21:32,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398488770] [2023-08-30 14:21:32,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:21:32,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:21:32,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:21:33,000 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 14:21:33,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:21:33,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398488770] [2023-08-30 14:21:33,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398488770] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:21:33,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:21:33,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 14:21:33,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132035152] [2023-08-30 14:21:33,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:21:33,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 14:21:33,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:21:33,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 14:21:33,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 14:21:33,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 579 [2023-08-30 14:21:33,130 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 93 transitions, 311 flow. Second operand has 6 states, 6 states have (on average 248.5) internal successors, (1491), 6 states have internal predecessors, (1491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:33,131 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:21:33,131 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 579 [2023-08-30 14:21:33,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:21:35,998 INFO L130 PetriNetUnfolder]: 24840/39153 cut-off events. [2023-08-30 14:21:35,999 INFO L131 PetriNetUnfolder]: For 1374/1374 co-relation queries the response was YES. [2023-08-30 14:21:36,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79346 conditions, 39153 events. 24840/39153 cut-off events. For 1374/1374 co-relation queries the response was YES. Maximal size of possible extension queue 1324. Compared 299763 event pairs, 7114 based on Foata normal form. 0/28969 useless extension candidates. Maximal degree in co-relation 79320. Up to 24568 conditions per place. [2023-08-30 14:21:36,223 INFO L137 encePairwiseOnDemand]: 564/579 looper letters, 237 selfloop transitions, 25 changer transitions 0/273 dead transitions. [2023-08-30 14:21:36,223 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 273 transitions, 1251 flow [2023-08-30 14:21:36,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 14:21:36,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 14:21:36,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1986 transitions. [2023-08-30 14:21:36,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4900074019245004 [2023-08-30 14:21:36,229 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1986 transitions. [2023-08-30 14:21:36,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1986 transitions. [2023-08-30 14:21:36,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:21:36,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1986 transitions. [2023-08-30 14:21:36,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 283.7142857142857) internal successors, (1986), 7 states have internal predecessors, (1986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:36,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 579.0) internal successors, (4632), 8 states have internal predecessors, (4632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:36,239 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 579.0) internal successors, (4632), 8 states have internal predecessors, (4632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:36,240 INFO L175 Difference]: Start difference. First operand has 110 places, 93 transitions, 311 flow. Second operand 7 states and 1986 transitions. [2023-08-30 14:21:36,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 273 transitions, 1251 flow [2023-08-30 14:21:36,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 273 transitions, 1203 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-08-30 14:21:36,246 INFO L231 Difference]: Finished difference. Result has 115 places, 117 transitions, 427 flow [2023-08-30 14:21:36,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=579, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=427, PETRI_PLACES=115, PETRI_TRANSITIONS=117} [2023-08-30 14:21:36,247 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 28 predicate places. [2023-08-30 14:21:36,247 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 117 transitions, 427 flow [2023-08-30 14:21:36,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 248.5) internal successors, (1491), 6 states have internal predecessors, (1491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:36,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:21:36,248 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 14:21:36,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 14:21:36,248 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-30 14:21:36,249 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:21:36,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1453417142, now seen corresponding path program 1 times [2023-08-30 14:21:36,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:21:36,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466622579] [2023-08-30 14:21:36,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:21:36,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:21:36,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:21:36,301 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 14:21:36,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:21:36,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466622579] [2023-08-30 14:21:36,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466622579] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:21:36,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:21:36,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:21:36,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129878166] [2023-08-30 14:21:36,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:21:36,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:21:36,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:21:36,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:21:36,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:21:36,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 579 [2023-08-30 14:21:36,312 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 117 transitions, 427 flow. Second operand has 3 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:36,312 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:21:36,312 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 579 [2023-08-30 14:21:36,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:21:38,872 INFO L130 PetriNetUnfolder]: 23804/38234 cut-off events. [2023-08-30 14:21:38,872 INFO L131 PetriNetUnfolder]: For 8468/8468 co-relation queries the response was YES. [2023-08-30 14:21:38,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88027 conditions, 38234 events. 23804/38234 cut-off events. For 8468/8468 co-relation queries the response was YES. Maximal size of possible extension queue 1140. Compared 300385 event pairs, 3844 based on Foata normal form. 0/30418 useless extension candidates. Maximal degree in co-relation 87998. Up to 32239 conditions per place. [2023-08-30 14:21:39,058 INFO L137 encePairwiseOnDemand]: 575/579 looper letters, 145 selfloop transitions, 6 changer transitions 0/162 dead transitions. [2023-08-30 14:21:39,058 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 162 transitions, 865 flow [2023-08-30 14:21:39,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:21:39,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:21:39,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 877 transitions. [2023-08-30 14:21:39,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5048934945308002 [2023-08-30 14:21:39,061 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 877 transitions. [2023-08-30 14:21:39,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 877 transitions. [2023-08-30 14:21:39,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:21:39,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 877 transitions. [2023-08-30 14:21:39,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 292.3333333333333) internal successors, (877), 3 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:39,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 579.0) internal successors, (2316), 4 states have internal predecessors, (2316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:39,066 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 579.0) internal successors, (2316), 4 states have internal predecessors, (2316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:39,066 INFO L175 Difference]: Start difference. First operand has 115 places, 117 transitions, 427 flow. Second operand 3 states and 877 transitions. [2023-08-30 14:21:39,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 162 transitions, 865 flow [2023-08-30 14:21:39,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 162 transitions, 865 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:21:39,089 INFO L231 Difference]: Finished difference. Result has 117 places, 117 transitions, 449 flow [2023-08-30 14:21:39,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=579, PETRI_DIFFERENCE_MINUEND_FLOW=423, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=449, PETRI_PLACES=117, PETRI_TRANSITIONS=117} [2023-08-30 14:21:39,090 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 30 predicate places. [2023-08-30 14:21:39,090 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 117 transitions, 449 flow [2023-08-30 14:21:39,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:39,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:21:39,090 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 14:21:39,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 14:21:39,091 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-30 14:21:39,091 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:21:39,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1453417144, now seen corresponding path program 1 times [2023-08-30 14:21:39,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:21:39,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920435918] [2023-08-30 14:21:39,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:21:39,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:21:39,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:21:39,151 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 14:21:39,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:21:39,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920435918] [2023-08-30 14:21:39,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920435918] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:21:39,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034973912] [2023-08-30 14:21:39,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:21:39,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:21:39,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:21:39,153 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:21:39,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 14:21:39,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:21:39,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 14:21:39,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:21:39,279 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 14:21:39,279 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:21:39,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2034973912] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:21:39,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:21:39,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-30 14:21:39,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79021612] [2023-08-30 14:21:39,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:21:39,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:21:39,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:21:39,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:21:39,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:21:39,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 579 [2023-08-30 14:21:39,292 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 117 transitions, 449 flow. Second operand has 4 states, 4 states have (on average 259.25) internal successors, (1037), 4 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:39,292 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:21:39,292 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 579 [2023-08-30 14:21:39,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:21:41,826 INFO L130 PetriNetUnfolder]: 22911/36068 cut-off events. [2023-08-30 14:21:41,827 INFO L131 PetriNetUnfolder]: For 14786/14791 co-relation queries the response was YES. [2023-08-30 14:21:41,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85116 conditions, 36068 events. 22911/36068 cut-off events. For 14786/14791 co-relation queries the response was YES. Maximal size of possible extension queue 1241. Compared 270002 event pairs, 13268 based on Foata normal form. 526/29413 useless extension candidates. Maximal degree in co-relation 85086. Up to 34804 conditions per place. [2023-08-30 14:21:42,013 INFO L137 encePairwiseOnDemand]: 576/579 looper letters, 119 selfloop transitions, 2 changer transitions 0/132 dead transitions. [2023-08-30 14:21:42,013 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 132 transitions, 728 flow [2023-08-30 14:21:42,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 14:21:42,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 14:21:42,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1116 transitions. [2023-08-30 14:21:42,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48186528497409326 [2023-08-30 14:21:42,016 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1116 transitions. [2023-08-30 14:21:42,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1116 transitions. [2023-08-30 14:21:42,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:21:42,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1116 transitions. [2023-08-30 14:21:42,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:42,021 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 579.0) internal successors, (2895), 5 states have internal predecessors, (2895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:42,022 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 579.0) internal successors, (2895), 5 states have internal predecessors, (2895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:42,022 INFO L175 Difference]: Start difference. First operand has 117 places, 117 transitions, 449 flow. Second operand 4 states and 1116 transitions. [2023-08-30 14:21:42,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 132 transitions, 728 flow [2023-08-30 14:21:42,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 132 transitions, 722 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:21:42,046 INFO L231 Difference]: Finished difference. Result has 118 places, 116 transitions, 443 flow [2023-08-30 14:21:42,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=579, PETRI_DIFFERENCE_MINUEND_FLOW=439, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=443, PETRI_PLACES=118, PETRI_TRANSITIONS=116} [2023-08-30 14:21:42,047 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 31 predicate places. [2023-08-30 14:21:42,047 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 116 transitions, 443 flow [2023-08-30 14:21:42,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 259.25) internal successors, (1037), 4 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:42,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:21:42,047 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 3, 2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:21:42,053 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 14:21:42,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:21:42,253 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-30 14:21:42,254 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:21:42,254 INFO L85 PathProgramCache]: Analyzing trace with hash -869383873, now seen corresponding path program 1 times [2023-08-30 14:21:42,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:21:42,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905311551] [2023-08-30 14:21:42,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:21:42,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:21:42,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:21:42,279 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 14:21:42,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:21:42,309 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 14:21:42,309 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 14:21:42,309 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2023-08-30 14:21:42,310 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 29 remaining) [2023-08-30 14:21:42,310 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 29 remaining) [2023-08-30 14:21:42,310 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 29 remaining) [2023-08-30 14:21:42,310 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 29 remaining) [2023-08-30 14:21:42,310 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 29 remaining) [2023-08-30 14:21:42,311 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 29 remaining) [2023-08-30 14:21:42,311 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 29 remaining) [2023-08-30 14:21:42,311 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 29 remaining) [2023-08-30 14:21:42,311 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 29 remaining) [2023-08-30 14:21:42,311 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 29 remaining) [2023-08-30 14:21:42,311 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 29 remaining) [2023-08-30 14:21:42,311 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 29 remaining) [2023-08-30 14:21:42,312 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 29 remaining) [2023-08-30 14:21:42,312 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 29 remaining) [2023-08-30 14:21:42,312 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 29 remaining) [2023-08-30 14:21:42,312 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 29 remaining) [2023-08-30 14:21:42,312 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 29 remaining) [2023-08-30 14:21:42,313 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 29 remaining) [2023-08-30 14:21:42,313 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 29 remaining) [2023-08-30 14:21:42,313 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 29 remaining) [2023-08-30 14:21:42,313 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 29 remaining) [2023-08-30 14:21:42,313 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 29 remaining) [2023-08-30 14:21:42,314 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 29 remaining) [2023-08-30 14:21:42,314 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 29 remaining) [2023-08-30 14:21:42,314 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 29 remaining) [2023-08-30 14:21:42,314 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 29 remaining) [2023-08-30 14:21:42,314 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 29 remaining) [2023-08-30 14:21:42,315 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 29 remaining) [2023-08-30 14:21:42,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 14:21:42,315 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:21:42,316 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 14:21:42,316 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-30 14:21:42,350 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 14:21:42,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 339 places, 391 transitions, 812 flow [2023-08-30 14:21:42,443 INFO L130 PetriNetUnfolder]: 110/733 cut-off events. [2023-08-30 14:21:42,443 INFO L131 PetriNetUnfolder]: For 19/22 co-relation queries the response was YES. [2023-08-30 14:21:42,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 761 conditions, 733 events. 110/733 cut-off events. For 19/22 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3303 event pairs, 1 based on Foata normal form. 0/563 useless extension candidates. Maximal degree in co-relation 505. Up to 16 conditions per place. [2023-08-30 14:21:42,453 INFO L82 GeneralOperation]: Start removeDead. Operand has 339 places, 391 transitions, 812 flow [2023-08-30 14:21:42,463 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 339 places, 391 transitions, 812 flow [2023-08-30 14:21:42,463 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:21:42,463 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 339 places, 391 transitions, 812 flow [2023-08-30 14:21:42,463 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 339 places, 391 transitions, 812 flow [2023-08-30 14:21:42,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 339 places, 391 transitions, 812 flow [2023-08-30 14:21:42,550 INFO L130 PetriNetUnfolder]: 110/733 cut-off events. [2023-08-30 14:21:42,550 INFO L131 PetriNetUnfolder]: For 19/22 co-relation queries the response was YES. [2023-08-30 14:21:42,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 761 conditions, 733 events. 110/733 cut-off events. For 19/22 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3303 event pairs, 1 based on Foata normal form. 0/563 useless extension candidates. Maximal degree in co-relation 505. Up to 16 conditions per place. [2023-08-30 14:21:42,589 INFO L119 LiptonReduction]: Number of co-enabled transitions 88560 [2023-08-30 14:21:47,484 INFO L134 LiptonReduction]: Checked pairs total: 156401 [2023-08-30 14:21:47,484 INFO L136 LiptonReduction]: Total number of compositions: 354 [2023-08-30 14:21:47,486 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:21:47,486 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;@67c3f1ff, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:21:47,486 INFO L358 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2023-08-30 14:21:47,487 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 14:21:47,487 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:21:47,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:21:47,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 14:21:47,488 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-08-30 14:21:47,488 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:21:47,488 INFO L85 PathProgramCache]: Analyzing trace with hash 75591, now seen corresponding path program 1 times [2023-08-30 14:21:47,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:21:47,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706249901] [2023-08-30 14:21:47,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:21:47,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:21:47,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:21:47,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:21:47,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:21:47,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706249901] [2023-08-30 14:21:47,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706249901] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:21:47,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:21:47,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:21:47,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257723427] [2023-08-30 14:21:47,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:21:47,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:21:47,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:21:47,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:21:47,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:21:47,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 326 out of 745 [2023-08-30 14:21:47,520 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 155 transitions, 340 flow. Second operand has 3 states, 3 states have (on average 326.6666666666667) internal successors, (980), 3 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:21:47,520 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:21:47,520 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 326 of 745 [2023-08-30 14:21:47,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:22:27,698 INFO L130 PetriNetUnfolder]: 502322/697114 cut-off events. [2023-08-30 14:22:27,699 INFO L131 PetriNetUnfolder]: For 4983/4983 co-relation queries the response was YES. [2023-08-30 14:22:28,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1359103 conditions, 697114 events. 502322/697114 cut-off events. For 4983/4983 co-relation queries the response was YES. Maximal size of possible extension queue 20969. Compared 5923134 event pairs, 481563 based on Foata normal form. 113137/604741 useless extension candidates. Maximal degree in co-relation 82729. Up to 658989 conditions per place. [2023-08-30 14:22:30,851 INFO L137 encePairwiseOnDemand]: 694/745 looper letters, 88 selfloop transitions, 1 changer transitions 0/105 dead transitions. [2023-08-30 14:22:30,851 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 105 transitions, 418 flow [2023-08-30 14:22:30,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:22:30,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:22:30,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1117 transitions. [2023-08-30 14:22:30,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49977628635346755 [2023-08-30 14:22:30,854 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1117 transitions. [2023-08-30 14:22:30,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1117 transitions. [2023-08-30 14:22:30,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:22:30,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1117 transitions. [2023-08-30 14:22:30,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 372.3333333333333) internal successors, (1117), 3 states have internal predecessors, (1117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:22:30,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:22:30,860 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:22:30,860 INFO L175 Difference]: Start difference. First operand has 112 places, 155 transitions, 340 flow. Second operand 3 states and 1117 transitions. [2023-08-30 14:22:30,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 105 transitions, 418 flow [2023-08-30 14:22:30,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 105 transitions, 418 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:22:30,864 INFO L231 Difference]: Finished difference. Result has 106 places, 105 transitions, 242 flow [2023-08-30 14:22:30,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=242, PETRI_PLACES=106, PETRI_TRANSITIONS=105} [2023-08-30 14:22:30,864 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, -6 predicate places. [2023-08-30 14:22:30,864 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 105 transitions, 242 flow [2023-08-30 14:22:30,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 326.6666666666667) internal successors, (980), 3 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:22:30,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:22:30,865 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 14:22:30,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 14:22:30,865 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-08-30 14:22:30,866 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:22:30,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1254455047, now seen corresponding path program 1 times [2023-08-30 14:22:30,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:22:30,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97440653] [2023-08-30 14:22:30,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:22:30,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:22:30,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:22:30,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:22:30,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:22:30,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97440653] [2023-08-30 14:22:30,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97440653] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:22:30,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:22:30,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:22:30,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298801581] [2023-08-30 14:22:30,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:22:30,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:22:30,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:22:30,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:22:30,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:22:30,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 326 out of 745 [2023-08-30 14:22:30,892 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 105 transitions, 242 flow. Second operand has 3 states, 3 states have (on average 327.6666666666667) internal successors, (983), 3 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:22:30,892 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:22:30,892 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 326 of 745 [2023-08-30 14:22:30,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:23:13,692 INFO L130 PetriNetUnfolder]: 502322/697115 cut-off events. [2023-08-30 14:23:13,692 INFO L131 PetriNetUnfolder]: For 4983/4983 co-relation queries the response was YES. [2023-08-30 14:23:14,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1359107 conditions, 697115 events. 502322/697115 cut-off events. For 4983/4983 co-relation queries the response was YES. Maximal size of possible extension queue 20969. Compared 5923670 event pairs, 481563 based on Foata normal form. 0/491605 useless extension candidates. Maximal degree in co-relation 1359098. Up to 658990 conditions per place. [2023-08-30 14:23:16,905 INFO L137 encePairwiseOnDemand]: 742/745 looper letters, 88 selfloop transitions, 2 changer transitions 0/106 dead transitions. [2023-08-30 14:23:16,905 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 106 transitions, 424 flow [2023-08-30 14:23:16,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:23:16,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:23:16,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1069 transitions. [2023-08-30 14:23:16,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47829977628635345 [2023-08-30 14:23:16,908 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1069 transitions. [2023-08-30 14:23:16,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1069 transitions. [2023-08-30 14:23:16,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:23:16,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1069 transitions. [2023-08-30 14:23:16,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 356.3333333333333) internal successors, (1069), 3 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:23:16,913 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:23:16,914 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:23:16,914 INFO L175 Difference]: Start difference. First operand has 106 places, 105 transitions, 242 flow. Second operand 3 states and 1069 transitions. [2023-08-30 14:23:16,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 106 transitions, 424 flow [2023-08-30 14:23:16,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 106 transitions, 423 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:23:16,918 INFO L231 Difference]: Finished difference. Result has 108 places, 106 transitions, 253 flow [2023-08-30 14:23:16,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=253, PETRI_PLACES=108, PETRI_TRANSITIONS=106} [2023-08-30 14:23:16,919 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, -4 predicate places. [2023-08-30 14:23:16,919 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 106 transitions, 253 flow [2023-08-30 14:23:16,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 327.6666666666667) internal successors, (983), 3 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:23:16,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:23:16,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:23:16,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-30 14:23:16,920 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-08-30 14:23:16,920 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:23:16,920 INFO L85 PathProgramCache]: Analyzing trace with hash -38347132, now seen corresponding path program 1 times [2023-08-30 14:23:16,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:23:16,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70649539] [2023-08-30 14:23:16,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:23:16,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:23:16,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:23:16,944 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:23:16,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:23:16,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70649539] [2023-08-30 14:23:16,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70649539] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:23:16,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032915405] [2023-08-30 14:23:16,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:23:16,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:23:16,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:23:16,948 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:23:16,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 14:23:17,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:23:17,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 14:23:17,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:23:17,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:23:17,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:23:17,054 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:23:17,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032915405] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:23:17,055 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:23:17,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-08-30 14:23:17,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871906206] [2023-08-30 14:23:17,055 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:23:17,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 14:23:17,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:23:17,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 14:23:17,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-30 14:23:17,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 745 [2023-08-30 14:23:17,074 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 106 transitions, 253 flow. Second operand has 6 states, 6 states have (on average 326.5) internal successors, (1959), 6 states have internal predecessors, (1959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:23:17,074 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:23:17,074 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 745 [2023-08-30 14:23:17,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:24:03,583 INFO L130 PetriNetUnfolder]: 502322/697118 cut-off events. [2023-08-30 14:24:03,583 INFO L131 PetriNetUnfolder]: For 4983/4983 co-relation queries the response was YES. [2023-08-30 14:24:04,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1359122 conditions, 697118 events. 502322/697118 cut-off events. For 4983/4983 co-relation queries the response was YES. Maximal size of possible extension queue 20965. Compared 5922819 event pairs, 481563 based on Foata normal form. 0/491608 useless extension candidates. Maximal degree in co-relation 1359111. Up to 658990 conditions per place. [2023-08-30 14:24:06,928 INFO L137 encePairwiseOnDemand]: 742/745 looper letters, 88 selfloop transitions, 5 changer transitions 0/109 dead transitions. [2023-08-30 14:24:06,928 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 109 transitions, 451 flow [2023-08-30 14:24:06,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 14:24:06,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 14:24:06,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2046 transitions. [2023-08-30 14:24:06,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4577181208053691 [2023-08-30 14:24:06,931 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2046 transitions. [2023-08-30 14:24:06,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2046 transitions. [2023-08-30 14:24:06,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:24:06,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2046 transitions. [2023-08-30 14:24:06,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 341.0) internal successors, (2046), 6 states have internal predecessors, (2046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:24:06,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 745.0) internal successors, (5215), 7 states have internal predecessors, (5215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:24:06,944 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 745.0) internal successors, (5215), 7 states have internal predecessors, (5215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:24:06,944 INFO L175 Difference]: Start difference. First operand has 108 places, 106 transitions, 253 flow. Second operand 6 states and 2046 transitions. [2023-08-30 14:24:06,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 109 transitions, 451 flow [2023-08-30 14:24:06,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 109 transitions, 447 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 14:24:06,948 INFO L231 Difference]: Finished difference. Result has 115 places, 109 transitions, 285 flow [2023-08-30 14:24:06,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=285, PETRI_PLACES=115, PETRI_TRANSITIONS=109} [2023-08-30 14:24:06,949 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, 3 predicate places. [2023-08-30 14:24:06,950 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 109 transitions, 285 flow [2023-08-30 14:24:06,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 326.5) internal successors, (1959), 6 states have internal predecessors, (1959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:24:06,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:24:06,950 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2023-08-30 14:24:06,956 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-08-30 14:24:07,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:24:07,156 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-08-30 14:24:07,157 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:24:07,157 INFO L85 PathProgramCache]: Analyzing trace with hash 799141447, now seen corresponding path program 2 times [2023-08-30 14:24:07,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:24:07,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939953529] [2023-08-30 14:24:07,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:24:07,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:24:07,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:24:07,197 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 14:24:07,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:24:07,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939953529] [2023-08-30 14:24:07,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939953529] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:24:07,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:24:07,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:24:07,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889494398] [2023-08-30 14:24:07,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:24:07,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:24:07,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:24:07,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:24:07,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:24:07,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 326 out of 745 [2023-08-30 14:24:07,208 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 109 transitions, 285 flow. Second operand has 3 states, 3 states have (on average 328.0) internal successors, (984), 3 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:24:07,208 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:24:07,208 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 326 of 745 [2023-08-30 14:24:07,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:24:52,528 INFO L130 PetriNetUnfolder]: 502804/696787 cut-off events. [2023-08-30 14:24:52,528 INFO L131 PetriNetUnfolder]: For 4910/4910 co-relation queries the response was YES. [2023-08-30 14:24:53,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1358760 conditions, 696787 events. 502804/696787 cut-off events. For 4910/4910 co-relation queries the response was YES. Maximal size of possible extension queue 20669. Compared 5888751 event pairs, 316053 based on Foata normal form. 0/491644 useless extension candidates. Maximal degree in co-relation 1358745. Up to 658881 conditions per place. [2023-08-30 14:24:55,988 INFO L137 encePairwiseOnDemand]: 740/745 looper letters, 111 selfloop transitions, 2 changer transitions 0/129 dead transitions. [2023-08-30 14:24:55,988 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 129 transitions, 551 flow [2023-08-30 14:24:55,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:24:55,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:24:55,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1090 transitions. [2023-08-30 14:24:55,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48769574944071586 [2023-08-30 14:24:55,990 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1090 transitions. [2023-08-30 14:24:55,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1090 transitions. [2023-08-30 14:24:55,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:24:55,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1090 transitions. [2023-08-30 14:24:55,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 363.3333333333333) internal successors, (1090), 3 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:24:55,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:24:55,995 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:24:55,995 INFO L175 Difference]: Start difference. First operand has 115 places, 109 transitions, 285 flow. Second operand 3 states and 1090 transitions. [2023-08-30 14:24:55,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 129 transitions, 551 flow [2023-08-30 14:24:55,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 129 transitions, 537 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 14:24:56,000 INFO L231 Difference]: Finished difference. Result has 117 places, 110 transitions, 287 flow [2023-08-30 14:24:56,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=287, PETRI_PLACES=117, PETRI_TRANSITIONS=110} [2023-08-30 14:24:56,000 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, 5 predicate places. [2023-08-30 14:24:56,000 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 110 transitions, 287 flow [2023-08-30 14:24:56,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 328.0) internal successors, (984), 3 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:24:56,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:24:56,001 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:24:56,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-30 14:24:56,001 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-08-30 14:24:56,002 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:24:56,002 INFO L85 PathProgramCache]: Analyzing trace with hash 827210064, now seen corresponding path program 1 times [2023-08-30 14:24:56,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:24:56,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601227100] [2023-08-30 14:24:56,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:24:56,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:24:56,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:24:56,087 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:24:56,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:24:56,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601227100] [2023-08-30 14:24:56,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601227100] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:24:56,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513413462] [2023-08-30 14:24:56,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:24:56,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:24:56,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:24:56,093 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:24:56,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 14:24:56,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:24:56,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 14:24:56,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:24:56,210 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:24:56,211 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:24:56,255 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:24:56,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1513413462] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:24:56,255 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:24:56,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-08-30 14:24:56,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090661989] [2023-08-30 14:24:56,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:24:56,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 14:24:56,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:24:56,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 14:24:56,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-08-30 14:24:56,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 745 [2023-08-30 14:24:56,281 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 110 transitions, 287 flow. Second operand has 12 states, 12 states have (on average 326.5) internal successors, (3918), 12 states have internal predecessors, (3918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:24:56,281 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:24:56,281 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 745 [2023-08-30 14:24:56,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:25:45,566 INFO L130 PetriNetUnfolder]: 505061/697892 cut-off events. [2023-08-30 14:25:45,566 INFO L131 PetriNetUnfolder]: For 18604/18604 co-relation queries the response was YES. [2023-08-30 14:25:47,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1387248 conditions, 697892 events. 505061/697892 cut-off events. For 18604/18604 co-relation queries the response was YES. Maximal size of possible extension queue 20609. Compared 5872364 event pairs, 481527 based on Foata normal form. 6/499183 useless extension candidates. Maximal degree in co-relation 1387232. Up to 658898 conditions per place. [2023-08-30 14:25:49,327 INFO L137 encePairwiseOnDemand]: 742/745 looper letters, 89 selfloop transitions, 11 changer transitions 0/116 dead transitions. [2023-08-30 14:25:49,327 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 116 transitions, 523 flow [2023-08-30 14:25:49,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 14:25:49,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 14:25:49,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 4005 transitions. [2023-08-30 14:25:49,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44798657718120805 [2023-08-30 14:25:49,333 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 4005 transitions. [2023-08-30 14:25:49,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 4005 transitions. [2023-08-30 14:25:49,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:25:49,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 4005 transitions. [2023-08-30 14:25:49,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 333.75) internal successors, (4005), 12 states have internal predecessors, (4005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:25:49,346 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 745.0) internal successors, (9685), 13 states have internal predecessors, (9685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:25:49,347 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 745.0) internal successors, (9685), 13 states have internal predecessors, (9685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:25:49,347 INFO L175 Difference]: Start difference. First operand has 117 places, 110 transitions, 287 flow. Second operand 12 states and 4005 transitions. [2023-08-30 14:25:49,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 116 transitions, 523 flow [2023-08-30 14:25:49,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 116 transitions, 521 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:25:49,403 INFO L231 Difference]: Finished difference. Result has 133 places, 116 transitions, 369 flow [2023-08-30 14:25:49,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=369, PETRI_PLACES=133, PETRI_TRANSITIONS=116} [2023-08-30 14:25:49,404 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, 21 predicate places. [2023-08-30 14:25:49,404 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 116 transitions, 369 flow [2023-08-30 14:25:49,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 326.5) internal successors, (3918), 12 states have internal predecessors, (3918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:25:49,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:25:49,405 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:25:49,410 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-08-30 14:25:49,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:25:49,606 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-08-30 14:25:49,606 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:25:49,606 INFO L85 PathProgramCache]: Analyzing trace with hash -136829328, now seen corresponding path program 2 times [2023-08-30 14:25:49,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:25:49,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340098379] [2023-08-30 14:25:49,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:25:49,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:25:49,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:25:49,795 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 14:25:49,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:25:49,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340098379] [2023-08-30 14:25:49,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340098379] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:25:49,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:25:49,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 14:25:49,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020567808] [2023-08-30 14:25:49,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:25:49,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 14:25:49,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:25:49,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 14:25:49,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 14:25:49,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 745 [2023-08-30 14:25:49,967 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 116 transitions, 369 flow. Second operand has 6 states, 6 states have (on average 315.5) internal successors, (1893), 6 states have internal predecessors, (1893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:25:49,967 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:25:49,967 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 745 [2023-08-30 14:25:49,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:26:53,717 INFO L130 PetriNetUnfolder]: 648401/908718 cut-off events. [2023-08-30 14:26:53,718 INFO L131 PetriNetUnfolder]: For 26616/26616 co-relation queries the response was YES. [2023-08-30 14:26:56,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1816775 conditions, 908718 events. 648401/908718 cut-off events. For 26616/26616 co-relation queries the response was YES. Maximal size of possible extension queue 26645. Compared 8140561 event pairs, 167848 based on Foata normal form. 0/666160 useless extension candidates. Maximal degree in co-relation 1816752. Up to 608045 conditions per place. [2023-08-30 14:26:59,388 INFO L137 encePairwiseOnDemand]: 728/745 looper letters, 319 selfloop transitions, 31 changer transitions 0/366 dead transitions. [2023-08-30 14:26:59,388 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 366 transitions, 1655 flow [2023-08-30 14:26:59,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 14:26:59,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 14:26:59,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2543 transitions. [2023-08-30 14:26:59,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48763183125599235 [2023-08-30 14:26:59,392 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2543 transitions. [2023-08-30 14:26:59,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2543 transitions. [2023-08-30 14:26:59,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:26:59,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2543 transitions. [2023-08-30 14:26:59,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 363.2857142857143) internal successors, (2543), 7 states have internal predecessors, (2543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:26:59,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 745.0) internal successors, (5960), 8 states have internal predecessors, (5960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:26:59,400 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 745.0) internal successors, (5960), 8 states have internal predecessors, (5960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:26:59,400 INFO L175 Difference]: Start difference. First operand has 133 places, 116 transitions, 369 flow. Second operand 7 states and 2543 transitions. [2023-08-30 14:26:59,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 366 transitions, 1655 flow [2023-08-30 14:27:00,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 366 transitions, 1607 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-08-30 14:27:00,154 INFO L231 Difference]: Finished difference. Result has 138 places, 146 transitions, 518 flow [2023-08-30 14:27:00,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=321, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=518, PETRI_PLACES=138, PETRI_TRANSITIONS=146} [2023-08-30 14:27:00,154 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, 26 predicate places. [2023-08-30 14:27:00,154 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 146 transitions, 518 flow [2023-08-30 14:27:00,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 315.5) internal successors, (1893), 6 states have internal predecessors, (1893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:27:00,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:27:00,155 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 14:27:00,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-30 14:27:00,155 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-08-30 14:27:00,156 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:27:00,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1489443839, now seen corresponding path program 1 times [2023-08-30 14:27:00,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:27:00,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055127314] [2023-08-30 14:27:00,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:27:00,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:27:00,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:27:00,192 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 14:27:00,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:27:00,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055127314] [2023-08-30 14:27:00,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055127314] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:27:00,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:27:00,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:27:00,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371821373] [2023-08-30 14:27:00,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:27:00,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:27:00,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:27:00,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:27:00,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:27:00,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 745 [2023-08-30 14:27:00,202 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 146 transitions, 518 flow. Second operand has 3 states, 3 states have (on average 328.0) internal successors, (984), 3 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:27:00,203 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:27:00,203 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 745 [2023-08-30 14:27:00,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:28:07,880 INFO L130 PetriNetUnfolder]: 620726/870784 cut-off events. [2023-08-30 14:28:07,880 INFO L131 PetriNetUnfolder]: For 174437/174446 co-relation queries the response was YES. [2023-08-30 14:28:10,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1965295 conditions, 870784 events. 620726/870784 cut-off events. For 174437/174446 co-relation queries the response was YES. Maximal size of possible extension queue 24956. Compared 7774935 event pairs, 132416 based on Foata normal form. 0/672068 useless extension candidates. Maximal degree in co-relation 1965268. Up to 738337 conditions per place. [2023-08-30 14:28:13,965 INFO L137 encePairwiseOnDemand]: 741/745 looper letters, 190 selfloop transitions, 6 changer transitions 0/212 dead transitions. [2023-08-30 14:28:13,965 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 212 transitions, 1107 flow [2023-08-30 14:28:13,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:28:13,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:28:13,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1118 transitions. [2023-08-30 14:28:13,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5002237136465324 [2023-08-30 14:28:13,966 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1118 transitions. [2023-08-30 14:28:13,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1118 transitions. [2023-08-30 14:28:13,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:28:13,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1118 transitions. [2023-08-30 14:28:13,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 372.6666666666667) internal successors, (1118), 3 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:28:13,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:28:13,969 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:28:13,969 INFO L175 Difference]: Start difference. First operand has 138 places, 146 transitions, 518 flow. Second operand 3 states and 1118 transitions. [2023-08-30 14:28:13,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 212 transitions, 1107 flow [2023-08-30 14:28:15,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 212 transitions, 1107 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:28:15,340 INFO L231 Difference]: Finished difference. Result has 140 places, 146 transitions, 540 flow [2023-08-30 14:28:15,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=540, PETRI_PLACES=140, PETRI_TRANSITIONS=146} [2023-08-30 14:28:15,340 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, 28 predicate places. [2023-08-30 14:28:15,340 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 146 transitions, 540 flow [2023-08-30 14:28:15,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 328.0) internal successors, (984), 3 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:28:15,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:28:15,341 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 14:28:15,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-30 14:28:15,341 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-08-30 14:28:15,341 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:28:15,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1489443841, now seen corresponding path program 1 times [2023-08-30 14:28:15,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:28:15,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647477935] [2023-08-30 14:28:15,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:28:15,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:28:15,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:28:15,387 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 14:28:15,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:28:15,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647477935] [2023-08-30 14:28:15,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647477935] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:28:15,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688565798] [2023-08-30 14:28:15,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:28:15,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:28:15,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:28:15,397 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:28:15,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-30 14:28:15,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:28:15,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 14:28:15,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:28:15,515 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 14:28:15,516 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:28:15,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688565798] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:28:15,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:28:15,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-30 14:28:15,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049425387] [2023-08-30 14:28:15,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:28:15,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:28:15,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:28:15,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:28:15,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:28:15,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 326 out of 745 [2023-08-30 14:28:15,531 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 146 transitions, 540 flow. Second operand has 4 states, 4 states have (on average 328.25) internal successors, (1313), 4 states have internal predecessors, (1313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:28:15,531 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:28:15,531 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 326 of 745 [2023-08-30 14:28:15,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:29:23,165 INFO L130 PetriNetUnfolder]: 599022/839256 cut-off events. [2023-08-30 14:29:23,166 INFO L131 PetriNetUnfolder]: For 284908/284943 co-relation queries the response was YES. [2023-08-30 14:29:27,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1909094 conditions, 839256 events. 599022/839256 cut-off events. For 284908/284943 co-relation queries the response was YES. Maximal size of possible extension queue 25042. Compared 7358376 event pairs, 414638 based on Foata normal form. 9208/664341 useless extension candidates. Maximal degree in co-relation 1909066. Up to 798930 conditions per place. [2023-08-30 14:29:31,420 INFO L137 encePairwiseOnDemand]: 742/745 looper letters, 143 selfloop transitions, 2 changer transitions 0/161 dead transitions. [2023-08-30 14:29:31,421 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 161 transitions, 867 flow [2023-08-30 14:29:31,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 14:29:31,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 14:29:31,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1410 transitions. [2023-08-30 14:29:31,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47315436241610737 [2023-08-30 14:29:31,434 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1410 transitions. [2023-08-30 14:29:31,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1410 transitions. [2023-08-30 14:29:31,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:29:31,435 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1410 transitions. [2023-08-30 14:29:31,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 352.5) internal successors, (1410), 4 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:29:31,439 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 745.0) internal successors, (3725), 5 states have internal predecessors, (3725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:29:31,440 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 745.0) internal successors, (3725), 5 states have internal predecessors, (3725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:29:31,440 INFO L175 Difference]: Start difference. First operand has 140 places, 146 transitions, 540 flow. Second operand 4 states and 1410 transitions. [2023-08-30 14:29:31,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 161 transitions, 867 flow [2023-08-30 14:29:33,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 161 transitions, 861 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:29:33,177 INFO L231 Difference]: Finished difference. Result has 141 places, 145 transitions, 534 flow [2023-08-30 14:29:33,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=530, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=534, PETRI_PLACES=141, PETRI_TRANSITIONS=145} [2023-08-30 14:29:33,177 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, 29 predicate places. [2023-08-30 14:29:33,177 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 145 transitions, 534 flow [2023-08-30 14:29:33,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 328.25) internal successors, (1313), 4 states have internal predecessors, (1313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:29:33,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:29:33,178 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:29:33,186 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-30 14:29:33,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:29:33,386 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-08-30 14:29:33,386 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:29:33,386 INFO L85 PathProgramCache]: Analyzing trace with hash -373311477, now seen corresponding path program 1 times [2023-08-30 14:29:33,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:29:33,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824947282] [2023-08-30 14:29:33,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:29:33,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:29:33,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:29:33,692 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 14:29:33,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:29:33,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824947282] [2023-08-30 14:29:33,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824947282] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:29:33,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761882563] [2023-08-30 14:29:33,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:29:33,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:29:33,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:29:33,695 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:29:33,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-30 14:29:33,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:29:33,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-30 14:29:33,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:29:33,916 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2023-08-30 14:29:34,018 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 14:29:34,018 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 14:29:34,045 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 [2023-08-30 14:29:34,133 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 [2023-08-30 14:29:34,144 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 14:29:34,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:29:34,266 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_549 (Array Int Int)) (|t_funThread1of3ForFork0_~p~0#1.offset| Int)) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_549) |c_~#a~0.base|) |t_funThread1of3ForFork0_~p~0#1.offset|) 2147483647)) is different from false [2023-08-30 14:29:34,448 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 1 not checked. [2023-08-30 14:29:34,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761882563] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:29:34,449 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:29:34,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2023-08-30 14:29:34,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196304871] [2023-08-30 14:29:34,449 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:29:34,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 14:29:34,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:29:34,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 14:29:34,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=101, Unknown=1, NotChecked=20, Total=156 [2023-08-30 14:29:34,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 282 out of 745 [2023-08-30 14:29:34,582 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 145 transitions, 534 flow. Second operand has 13 states, 13 states have (on average 284.38461538461536) internal successors, (3697), 13 states have internal predecessors, (3697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:29:34,582 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:29:34,582 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 282 of 745 [2023-08-30 14:29:34,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand