./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_61-invariant_racing.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_61-invariant_racing.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3465c34fa1c26a5c7a3494350123ab41e5828c33cb08ac3f67b81737d460e559 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 10:15:05,860 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 10:15:05,863 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 10:15:05,909 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 10:15:05,912 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 10:15:05,915 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 10:15:05,917 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 10:15:05,920 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 10:15:05,922 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 10:15:05,927 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 10:15:05,928 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 10:15:05,930 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 10:15:05,931 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 10:15:05,933 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 10:15:05,934 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 10:15:05,940 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 10:15:05,941 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 10:15:05,943 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 10:15:05,945 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 10:15:05,949 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 10:15:05,951 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 10:15:05,952 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 10:15:05,953 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 10:15:05,954 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 10:15:05,961 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 10:15:05,961 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 10:15:05,962 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 10:15:05,964 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 10:15:05,964 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 10:15:05,965 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 10:15:05,965 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 10:15:05,972 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 10:15:05,974 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 10:15:05,975 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 10:15:05,976 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 10:15:05,976 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 10:15:05,977 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 10:15:05,977 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 10:15:05,977 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 10:15:05,978 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 10:15:05,978 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 10:15:05,980 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 10:15:06,023 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 10:15:06,025 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 10:15:06,026 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 10:15:06,026 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 10:15:06,027 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 10:15:06,028 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 10:15:06,028 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 10:15:06,028 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 10:15:06,029 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 10:15:06,029 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 10:15:06,030 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 10:15:06,030 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 10:15:06,030 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 10:15:06,030 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 10:15:06,031 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 10:15:06,031 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 10:15:06,031 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 10:15:06,031 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 10:15:06,031 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 10:15:06,032 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 10:15:06,032 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 10:15:06,032 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 10:15:06,032 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 10:15:06,032 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 10:15:06,033 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 10:15:06,033 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 10:15:06,033 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 10:15:06,033 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 10:15:06,034 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 10:15:06,034 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 10:15:06,034 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 10:15:06,034 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 10:15:06,035 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 10:15:06,035 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 10:15:06,035 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 10:15:06,035 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 10:15:06,035 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 10:15:06,036 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3465c34fa1c26a5c7a3494350123ab41e5828c33cb08ac3f67b81737d460e559 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 10:15:06,351 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 10:15:06,374 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 10:15:06,377 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 10:15:06,378 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 10:15:06,378 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 10:15:06,380 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_61-invariant_racing.i [2023-08-30 10:15:07,650 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 10:15:07,939 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 10:15:07,942 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_61-invariant_racing.i [2023-08-30 10:15:07,963 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2066d8fdf/4e29c2885006402b8e55a1003790775a/FLAG3ee9442ef [2023-08-30 10:15:07,986 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2066d8fdf/4e29c2885006402b8e55a1003790775a [2023-08-30 10:15:07,988 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 10:15:07,989 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 10:15:07,992 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 10:15:07,992 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 10:15:07,995 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 10:15:07,996 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:15:07" (1/1) ... [2023-08-30 10:15:07,997 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7af740e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:15:07, skipping insertion in model container [2023-08-30 10:15:07,997 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:15:07" (1/1) ... [2023-08-30 10:15:08,003 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 10:15:08,045 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 10:15:08,375 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_61-invariant_racing.i[30176,30189] [2023-08-30 10:15:08,397 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 10:15:08,414 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 10:15:08,451 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_61-invariant_racing.i[30176,30189] [2023-08-30 10:15:08,476 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 10:15:08,526 INFO L208 MainTranslator]: Completed translation [2023-08-30 10:15:08,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:15:08 WrapperNode [2023-08-30 10:15:08,526 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 10:15:08,527 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 10:15:08,527 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 10:15:08,527 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 10:15:08,531 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:15:08" (1/1) ... [2023-08-30 10:15:08,558 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:15:08" (1/1) ... [2023-08-30 10:15:08,580 INFO L138 Inliner]: procedures = 170, calls = 32, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 104 [2023-08-30 10:15:08,580 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 10:15:08,581 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 10:15:08,581 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 10:15:08,581 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 10:15:08,587 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:15:08" (1/1) ... [2023-08-30 10:15:08,588 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:15:08" (1/1) ... [2023-08-30 10:15:08,590 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:15:08" (1/1) ... [2023-08-30 10:15:08,590 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:15:08" (1/1) ... [2023-08-30 10:15:08,595 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:15:08" (1/1) ... [2023-08-30 10:15:08,599 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:15:08" (1/1) ... [2023-08-30 10:15:08,600 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:15:08" (1/1) ... [2023-08-30 10:15:08,601 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:15:08" (1/1) ... [2023-08-30 10:15:08,604 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 10:15:08,605 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 10:15:08,605 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 10:15:08,605 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 10:15:08,605 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:15:08" (1/1) ... [2023-08-30 10:15:08,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 10:15:08,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:15:08,638 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 10:15:08,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 10:15:08,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 10:15:08,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 10:15:08,674 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 10:15:08,674 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 10:15:08,674 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 10:15:08,674 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-30 10:15:08,674 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-30 10:15:08,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 10:15:08,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 10:15:08,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 10:15:08,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 10:15:08,676 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 10:15:08,851 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 10:15:08,853 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 10:15:09,034 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 10:15:09,041 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 10:15:09,041 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-08-30 10:15:09,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:15:09 BoogieIcfgContainer [2023-08-30 10:15:09,043 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 10:15:09,045 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 10:15:09,045 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 10:15:09,048 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 10:15:09,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 10:15:07" (1/3) ... [2023-08-30 10:15:09,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d696b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:15:09, skipping insertion in model container [2023-08-30 10:15:09,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:15:08" (2/3) ... [2023-08-30 10:15:09,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d696b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:15:09, skipping insertion in model container [2023-08-30 10:15:09,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:15:09" (3/3) ... [2023-08-30 10:15:09,051 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_61-invariant_racing.i [2023-08-30 10:15:09,058 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 10:15:09,069 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 10:15:09,069 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-08-30 10:15:09,069 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 10:15:09,140 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-30 10:15:09,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 131 places, 147 transitions, 302 flow [2023-08-30 10:15:09,226 INFO L130 PetriNetUnfolder]: 30/209 cut-off events. [2023-08-30 10:15:09,227 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 10:15:09,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215 conditions, 209 events. 30/209 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 663 event pairs, 0 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 110. Up to 6 conditions per place. [2023-08-30 10:15:09,235 INFO L82 GeneralOperation]: Start removeDead. Operand has 131 places, 147 transitions, 302 flow [2023-08-30 10:15:09,240 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 129 places, 144 transitions, 296 flow [2023-08-30 10:15:09,243 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:15:09,256 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 129 places, 144 transitions, 296 flow [2023-08-30 10:15:09,263 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 129 places, 144 transitions, 296 flow [2023-08-30 10:15:09,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 144 transitions, 296 flow [2023-08-30 10:15:09,307 INFO L130 PetriNetUnfolder]: 29/206 cut-off events. [2023-08-30 10:15:09,310 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 10:15:09,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212 conditions, 206 events. 29/206 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 660 event pairs, 0 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 110. Up to 6 conditions per place. [2023-08-30 10:15:09,320 INFO L119 LiptonReduction]: Number of co-enabled transitions 5616 [2023-08-30 10:15:11,936 INFO L134 LiptonReduction]: Checked pairs total: 16901 [2023-08-30 10:15:11,937 INFO L136 LiptonReduction]: Total number of compositions: 112 [2023-08-30 10:15:11,955 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 10:15:11,962 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;@777f4211, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:15:11,963 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-08-30 10:15:11,969 INFO L130 PetriNetUnfolder]: 0/11 cut-off events. [2023-08-30 10:15:11,969 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:15:11,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:15:11,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 10:15:11,971 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:15:11,975 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:15:11,975 INFO L85 PathProgramCache]: Analyzing trace with hash 16975788, now seen corresponding path program 1 times [2023-08-30 10:15:11,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:15:11,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933145465] [2023-08-30 10:15:11,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:15:11,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:15:12,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:15:12,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:15:12,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:15:12,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933145465] [2023-08-30 10:15:12,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933145465] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:15:12,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:15:12,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:15:12,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93925701] [2023-08-30 10:15:12,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:15:12,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:15:12,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:15:12,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:15:12,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:15:12,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 259 [2023-08-30 10:15:12,315 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 66 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:12,315 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:15:12,315 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 259 [2023-08-30 10:15:12,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:15:12,506 INFO L130 PetriNetUnfolder]: 358/790 cut-off events. [2023-08-30 10:15:12,506 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 10:15:12,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1550 conditions, 790 events. 358/790 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 3955 event pairs, 0 based on Foata normal form. 73/648 useless extension candidates. Maximal degree in co-relation 1498. Up to 718 conditions per place. [2023-08-30 10:15:12,512 INFO L137 encePairwiseOnDemand]: 238/259 looper letters, 59 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2023-08-30 10:15:12,512 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 66 transitions, 262 flow [2023-08-30 10:15:12,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:15:12,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:15:12,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 455 transitions. [2023-08-30 10:15:12,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5855855855855856 [2023-08-30 10:15:12,525 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 455 transitions. [2023-08-30 10:15:12,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 455 transitions. [2023-08-30 10:15:12,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:15:12,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 455 transitions. [2023-08-30 10:15:12,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:12,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 259.0) internal successors, (1036), 4 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:12,537 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 259.0) internal successors, (1036), 4 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:12,539 INFO L175 Difference]: Start difference. First operand has 53 places, 66 transitions, 140 flow. Second operand 3 states and 455 transitions. [2023-08-30 10:15:12,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 66 transitions, 262 flow [2023-08-30 10:15:12,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 66 transitions, 262 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 10:15:12,544 INFO L231 Difference]: Finished difference. Result has 53 places, 48 transitions, 112 flow [2023-08-30 10:15:12,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=53, PETRI_TRANSITIONS=48} [2023-08-30 10:15:12,548 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 0 predicate places. [2023-08-30 10:15:12,549 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 48 transitions, 112 flow [2023-08-30 10:15:12,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:12,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:15:12,550 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:15:12,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 10:15:12,550 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:15:12,551 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:15:12,551 INFO L85 PathProgramCache]: Analyzing trace with hash 898013281, now seen corresponding path program 1 times [2023-08-30 10:15:12,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:15:12,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342206591] [2023-08-30 10:15:12,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:15:12,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:15:12,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:15:12,642 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:15:12,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:15:12,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342206591] [2023-08-30 10:15:12,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342206591] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:15:12,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638160725] [2023-08-30 10:15:12,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:15:12,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:15:12,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:15:12,657 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:15:12,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 10:15:12,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:15:12,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 10:15:12,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:15:12,790 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:15:12,790 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:15:12,822 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:15:12,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638160725] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:15:12,822 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:15:12,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 10:15:12,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045110903] [2023-08-30 10:15:12,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:15:12,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:15:12,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:15:12,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:15:12,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:15:12,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 259 [2023-08-30 10:15:12,844 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 48 transitions, 112 flow. Second operand has 7 states, 7 states have (on average 124.14285714285714) internal successors, (869), 7 states have internal predecessors, (869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:12,844 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:15:12,845 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 259 [2023-08-30 10:15:12,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:15:12,896 INFO L130 PetriNetUnfolder]: 35/107 cut-off events. [2023-08-30 10:15:12,896 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-30 10:15:12,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254 conditions, 107 events. 35/107 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 340 event pairs, 0 based on Foata normal form. 17/108 useless extension candidates. Maximal degree in co-relation 206. Up to 68 conditions per place. [2023-08-30 10:15:12,897 INFO L137 encePairwiseOnDemand]: 256/259 looper letters, 25 selfloop transitions, 2 changer transitions 12/42 dead transitions. [2023-08-30 10:15:12,897 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 42 transitions, 173 flow [2023-08-30 10:15:12,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 10:15:12,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 10:15:12,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 528 transitions. [2023-08-30 10:15:12,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5096525096525096 [2023-08-30 10:15:12,900 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 528 transitions. [2023-08-30 10:15:12,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 528 transitions. [2023-08-30 10:15:12,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:15:12,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 528 transitions. [2023-08-30 10:15:12,902 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 132.0) internal successors, (528), 4 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:12,904 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 259.0) internal successors, (1295), 5 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:12,905 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 259.0) internal successors, (1295), 5 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:12,905 INFO L175 Difference]: Start difference. First operand has 53 places, 48 transitions, 112 flow. Second operand 4 states and 528 transitions. [2023-08-30 10:15:12,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 42 transitions, 173 flow [2023-08-30 10:15:12,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 42 transitions, 167 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 10:15:12,907 INFO L231 Difference]: Finished difference. Result has 29 places, 18 transitions, 45 flow [2023-08-30 10:15:12,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=45, PETRI_PLACES=29, PETRI_TRANSITIONS=18} [2023-08-30 10:15:12,908 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -24 predicate places. [2023-08-30 10:15:12,908 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 18 transitions, 45 flow [2023-08-30 10:15:12,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 124.14285714285714) internal successors, (869), 7 states have internal predecessors, (869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:12,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:15:12,909 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:15:12,921 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 10:15:13,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:15:13,122 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 10:15:13,122 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:15:13,122 INFO L85 PathProgramCache]: Analyzing trace with hash -460393251, now seen corresponding path program 1 times [2023-08-30 10:15:13,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:15:13,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984653780] [2023-08-30 10:15:13,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:15:13,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:15:13,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:15:13,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:15:13,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:15:13,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984653780] [2023-08-30 10:15:13,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984653780] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:15:13,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:15:13,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:15:13,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644563944] [2023-08-30 10:15:13,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:15:13,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:15:13,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:15:13,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:15:13,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:15:13,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 259 [2023-08-30 10:15:13,217 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 18 transitions, 45 flow. Second operand has 3 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:13,218 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:15:13,218 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 259 [2023-08-30 10:15:13,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:15:13,225 INFO L130 PetriNetUnfolder]: 2/12 cut-off events. [2023-08-30 10:15:13,225 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 10:15:13,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33 conditions, 12 events. 2/12 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 10 event pairs, 2 based on Foata normal form. 3/15 useless extension candidates. Maximal degree in co-relation 16. Up to 10 conditions per place. [2023-08-30 10:15:13,226 INFO L137 encePairwiseOnDemand]: 257/259 looper letters, 0 selfloop transitions, 0 changer transitions 6/6 dead transitions. [2023-08-30 10:15:13,226 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 14 places, 6 transitions, 31 flow [2023-08-30 10:15:13,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:15:13,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:15:13,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 366 transitions. [2023-08-30 10:15:13,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47104247104247104 [2023-08-30 10:15:13,227 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 366 transitions. [2023-08-30 10:15:13,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 366 transitions. [2023-08-30 10:15:13,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:15:13,228 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 366 transitions. [2023-08-30 10:15:13,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:13,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 259.0) internal successors, (1036), 4 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:13,231 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 259.0) internal successors, (1036), 4 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:13,231 INFO L175 Difference]: Start difference. First operand has 29 places, 18 transitions, 45 flow. Second operand 3 states and 366 transitions. [2023-08-30 10:15:13,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 14 places, 6 transitions, 31 flow [2023-08-30 10:15:13,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 12 places, 6 transitions, 28 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:15:13,232 INFO L231 Difference]: Finished difference. Result has 12 places, 0 transitions, 0 flow [2023-08-30 10:15:13,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=18, PETRI_DIFFERENCE_MINUEND_PLACES=10, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=12, PETRI_TRANSITIONS=0} [2023-08-30 10:15:13,233 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -41 predicate places. [2023-08-30 10:15:13,233 INFO L495 AbstractCegarLoop]: Abstraction has has 12 places, 0 transitions, 0 flow [2023-08-30 10:15:13,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:13,235 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 16 remaining) [2023-08-30 10:15:13,236 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 16 remaining) [2023-08-30 10:15:13,236 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 16 remaining) [2023-08-30 10:15:13,236 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 16 remaining) [2023-08-30 10:15:13,236 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 16 remaining) [2023-08-30 10:15:13,237 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 16 remaining) [2023-08-30 10:15:13,237 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 16 remaining) [2023-08-30 10:15:13,237 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 16 remaining) [2023-08-30 10:15:13,237 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 16 remaining) [2023-08-30 10:15:13,237 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 16 remaining) [2023-08-30 10:15:13,238 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 16 remaining) [2023-08-30 10:15:13,238 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 16 remaining) [2023-08-30 10:15:13,238 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 16 remaining) [2023-08-30 10:15:13,238 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 16 remaining) [2023-08-30 10:15:13,238 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 16 remaining) [2023-08-30 10:15:13,239 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 16 remaining) [2023-08-30 10:15:13,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 10:15:13,239 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-30 10:15:13,241 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-30 10:15:13,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 131 places, 147 transitions, 302 flow [2023-08-30 10:15:13,263 INFO L130 PetriNetUnfolder]: 30/209 cut-off events. [2023-08-30 10:15:13,263 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 10:15:13,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215 conditions, 209 events. 30/209 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 663 event pairs, 0 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 110. Up to 6 conditions per place. [2023-08-30 10:15:13,264 INFO L82 GeneralOperation]: Start removeDead. Operand has 131 places, 147 transitions, 302 flow [2023-08-30 10:15:13,265 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 123 places, 138 transitions, 281 flow [2023-08-30 10:15:13,266 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:15:13,266 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 123 places, 138 transitions, 281 flow [2023-08-30 10:15:13,266 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 123 places, 138 transitions, 281 flow [2023-08-30 10:15:13,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 138 transitions, 281 flow [2023-08-30 10:15:13,280 INFO L130 PetriNetUnfolder]: 29/200 cut-off events. [2023-08-30 10:15:13,281 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:15:13,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 205 conditions, 200 events. 29/200 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 647 event pairs, 0 based on Foata normal form. 0/153 useless extension candidates. Maximal degree in co-relation 110. Up to 6 conditions per place. [2023-08-30 10:15:13,284 INFO L119 LiptonReduction]: Number of co-enabled transitions 5616 [2023-08-30 10:15:15,517 INFO L134 LiptonReduction]: Checked pairs total: 16623 [2023-08-30 10:15:15,517 INFO L136 LiptonReduction]: Total number of compositions: 107 [2023-08-30 10:15:15,519 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-30 10:15:15,520 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;@777f4211, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:15:15,520 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-30 10:15:15,523 INFO L130 PetriNetUnfolder]: 8/44 cut-off events. [2023-08-30 10:15:15,523 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:15:15,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:15:15,523 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-30 10:15:15,524 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 10:15:15,524 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:15:15,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1999751301, now seen corresponding path program 1 times [2023-08-30 10:15:15,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:15:15,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707999361] [2023-08-30 10:15:15,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:15:15,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:15:15,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 10:15:15,547 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 10:15:15,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 10:15:15,588 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 10:15:15,588 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 10:15:15,589 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-30 10:15:15,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 10:15:15,589 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-30 10:15:15,590 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-30 10:15:15,590 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 10:15:15,590 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-30 10:15:15,617 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 10:15:15,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 188 transitions, 394 flow [2023-08-30 10:15:15,662 INFO L130 PetriNetUnfolder]: 51/348 cut-off events. [2023-08-30 10:15:15,663 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 10:15:15,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 362 conditions, 348 events. 51/348 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1277 event pairs, 0 based on Foata normal form. 0/263 useless extension candidates. Maximal degree in co-relation 211. Up to 9 conditions per place. [2023-08-30 10:15:15,665 INFO L82 GeneralOperation]: Start removeDead. Operand has 166 places, 188 transitions, 394 flow [2023-08-30 10:15:15,668 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 166 places, 188 transitions, 394 flow [2023-08-30 10:15:15,668 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:15:15,669 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 166 places, 188 transitions, 394 flow [2023-08-30 10:15:15,669 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 166 places, 188 transitions, 394 flow [2023-08-30 10:15:15,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 188 transitions, 394 flow [2023-08-30 10:15:15,698 INFO L130 PetriNetUnfolder]: 51/348 cut-off events. [2023-08-30 10:15:15,698 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 10:15:15,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 362 conditions, 348 events. 51/348 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1277 event pairs, 0 based on Foata normal form. 0/263 useless extension candidates. Maximal degree in co-relation 211. Up to 9 conditions per place. [2023-08-30 10:15:15,709 INFO L119 LiptonReduction]: Number of co-enabled transitions 15756 [2023-08-30 10:15:17,981 INFO L134 LiptonReduction]: Checked pairs total: 48454 [2023-08-30 10:15:17,982 INFO L136 LiptonReduction]: Total number of compositions: 135 [2023-08-30 10:15:17,984 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 10:15:17,985 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;@777f4211, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:15:17,985 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-08-30 10:15:17,987 INFO L130 PetriNetUnfolder]: 2/17 cut-off events. [2023-08-30 10:15:17,987 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:15:17,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:15:17,987 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 10:15:17,987 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:15:17,988 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:15:17,988 INFO L85 PathProgramCache]: Analyzing trace with hash 974240397, now seen corresponding path program 1 times [2023-08-30 10:15:17,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:15:17,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29850218] [2023-08-30 10:15:17,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:15:17,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:15:18,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:15:18,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:15:18,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:15:18,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29850218] [2023-08-30 10:15:18,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29850218] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:15:18,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:15:18,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:15:18,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541390815] [2023-08-30 10:15:18,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:15:18,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:15:18,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:15:18,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:15:18,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:15:18,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 323 [2023-08-30 10:15:18,065 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 96 transitions, 210 flow. Second operand has 3 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:18,065 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:15:18,065 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 323 [2023-08-30 10:15:18,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:15:19,391 INFO L130 PetriNetUnfolder]: 11284/17607 cut-off events. [2023-08-30 10:15:19,394 INFO L131 PetriNetUnfolder]: For 58/58 co-relation queries the response was YES. [2023-08-30 10:15:19,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34967 conditions, 17607 events. 11284/17607 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 760. Compared 130331 event pairs, 5088 based on Foata normal form. 2371/14316 useless extension candidates. Maximal degree in co-relation 5126. Up to 17242 conditions per place. [2023-08-30 10:15:19,497 INFO L137 encePairwiseOnDemand]: 297/323 looper letters, 75 selfloop transitions, 2 changer transitions 0/90 dead transitions. [2023-08-30 10:15:19,497 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 90 transitions, 352 flow [2023-08-30 10:15:19,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:15:19,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:15:19,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 575 transitions. [2023-08-30 10:15:19,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5933952528379773 [2023-08-30 10:15:19,499 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 575 transitions. [2023-08-30 10:15:19,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 575 transitions. [2023-08-30 10:15:19,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:15:19,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 575 transitions. [2023-08-30 10:15:19,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 191.66666666666666) internal successors, (575), 3 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:19,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:19,504 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:19,504 INFO L175 Difference]: Start difference. First operand has 76 places, 96 transitions, 210 flow. Second operand 3 states and 575 transitions. [2023-08-30 10:15:19,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 90 transitions, 352 flow [2023-08-30 10:15:19,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 90 transitions, 352 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 10:15:19,507 INFO L231 Difference]: Finished difference. Result has 79 places, 76 transitions, 184 flow [2023-08-30 10:15:19,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=184, PETRI_PLACES=79, PETRI_TRANSITIONS=76} [2023-08-30 10:15:19,508 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 3 predicate places. [2023-08-30 10:15:19,508 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 76 transitions, 184 flow [2023-08-30 10:15:19,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:19,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:15:19,509 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 10:15:19,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 10:15:19,510 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:15:19,510 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:15:19,510 INFO L85 PathProgramCache]: Analyzing trace with hash -385152089, now seen corresponding path program 1 times [2023-08-30 10:15:19,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:15:19,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221394110] [2023-08-30 10:15:19,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:15:19,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:15:19,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:15:19,546 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 10:15:19,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:15:19,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221394110] [2023-08-30 10:15:19,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221394110] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:15:19,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:15:19,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:15:19,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909547317] [2023-08-30 10:15:19,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:15:19,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:15:19,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:15:19,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:15:19,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:15:19,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 323 [2023-08-30 10:15:19,568 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 76 transitions, 184 flow. Second operand has 3 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:19,568 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:15:19,568 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 323 [2023-08-30 10:15:19,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:15:20,762 INFO L130 PetriNetUnfolder]: 10842/17172 cut-off events. [2023-08-30 10:15:20,762 INFO L131 PetriNetUnfolder]: For 309/309 co-relation queries the response was YES. [2023-08-30 10:15:20,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34560 conditions, 17172 events. 10842/17172 cut-off events. For 309/309 co-relation queries the response was YES. Maximal size of possible extension queue 717. Compared 130347 event pairs, 1040 based on Foata normal form. 0/12126 useless extension candidates. Maximal degree in co-relation 33402. Up to 14772 conditions per place. [2023-08-30 10:15:20,845 INFO L137 encePairwiseOnDemand]: 319/323 looper letters, 89 selfloop transitions, 4 changer transitions 0/106 dead transitions. [2023-08-30 10:15:20,845 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 106 transitions, 428 flow [2023-08-30 10:15:20,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:15:20,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:15:20,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 558 transitions. [2023-08-30 10:15:20,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5758513931888545 [2023-08-30 10:15:20,847 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 558 transitions. [2023-08-30 10:15:20,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 558 transitions. [2023-08-30 10:15:20,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:15:20,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 558 transitions. [2023-08-30 10:15:20,849 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 186.0) internal successors, (558), 3 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:20,851 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:20,852 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:20,852 INFO L175 Difference]: Start difference. First operand has 79 places, 76 transitions, 184 flow. Second operand 3 states and 558 transitions. [2023-08-30 10:15:20,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 106 transitions, 428 flow [2023-08-30 10:15:20,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 106 transitions, 426 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:15:20,856 INFO L231 Difference]: Finished difference. Result has 80 places, 76 transitions, 194 flow [2023-08-30 10:15:20,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=194, PETRI_PLACES=80, PETRI_TRANSITIONS=76} [2023-08-30 10:15:20,857 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 4 predicate places. [2023-08-30 10:15:20,857 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 76 transitions, 194 flow [2023-08-30 10:15:20,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:20,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:15:20,858 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 10:15:20,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 10:15:20,859 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:15:20,859 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:15:20,859 INFO L85 PathProgramCache]: Analyzing trace with hash -385152091, now seen corresponding path program 1 times [2023-08-30 10:15:20,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:15:20,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736758186] [2023-08-30 10:15:20,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:15:20,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:15:20,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:15:20,896 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:15:20,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:15:20,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736758186] [2023-08-30 10:15:20,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736758186] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:15:20,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:15:20,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:15:20,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186976884] [2023-08-30 10:15:20,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:15:20,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:15:20,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:15:20,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:15:20,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:15:20,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 323 [2023-08-30 10:15:20,907 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 76 transitions, 194 flow. Second operand has 3 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:20,907 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:15:20,907 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 323 [2023-08-30 10:15:20,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:15:22,048 INFO L130 PetriNetUnfolder]: 10400/16156 cut-off events. [2023-08-30 10:15:22,049 INFO L131 PetriNetUnfolder]: For 2144/2144 co-relation queries the response was YES. [2023-08-30 10:15:22,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33352 conditions, 16156 events. 10400/16156 cut-off events. For 2144/2144 co-relation queries the response was YES. Maximal size of possible extension queue 729. Compared 115697 event pairs, 9664 based on Foata normal form. 221/11658 useless extension candidates. Maximal degree in co-relation 19375. Up to 15931 conditions per place. [2023-08-30 10:15:22,139 INFO L137 encePairwiseOnDemand]: 321/323 looper letters, 61 selfloop transitions, 1 changer transitions 0/75 dead transitions. [2023-08-30 10:15:22,139 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 75 transitions, 314 flow [2023-08-30 10:15:22,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:15:22,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:15:22,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 529 transitions. [2023-08-30 10:15:22,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5459236326109391 [2023-08-30 10:15:22,143 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 529 transitions. [2023-08-30 10:15:22,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 529 transitions. [2023-08-30 10:15:22,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:15:22,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 529 transitions. [2023-08-30 10:15:22,145 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 176.33333333333334) internal successors, (529), 3 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:22,147 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:22,147 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:22,147 INFO L175 Difference]: Start difference. First operand has 80 places, 76 transitions, 194 flow. Second operand 3 states and 529 transitions. [2023-08-30 10:15:22,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 75 transitions, 314 flow [2023-08-30 10:15:22,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 75 transitions, 310 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:15:22,152 INFO L231 Difference]: Finished difference. Result has 80 places, 75 transitions, 188 flow [2023-08-30 10:15:22,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=188, PETRI_PLACES=80, PETRI_TRANSITIONS=75} [2023-08-30 10:15:22,154 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 4 predicate places. [2023-08-30 10:15:22,154 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 75 transitions, 188 flow [2023-08-30 10:15:22,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:22,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:15:22,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:15:22,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 10:15:22,155 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:15:22,156 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:15:22,156 INFO L85 PathProgramCache]: Analyzing trace with hash -386547508, now seen corresponding path program 1 times [2023-08-30 10:15:22,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:15:22,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011427846] [2023-08-30 10:15:22,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:15:22,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:15:22,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:15:22,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:15:22,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:15:22,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011427846] [2023-08-30 10:15:22,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011427846] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:15:22,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021255645] [2023-08-30 10:15:22,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:15:22,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:15:22,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:15:22,275 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:15:22,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 10:15:22,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:15:22,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 10:15:22,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:15:22,353 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 10:15:22,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:15:22,367 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:15:22,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2021255645] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:15:22,368 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:15:22,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 10:15:22,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449247929] [2023-08-30 10:15:22,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:15:22,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:15:22,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:15:22,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:15:22,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:15:22,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 323 [2023-08-30 10:15:22,390 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 75 transitions, 188 flow. Second operand has 7 states, 7 states have (on average 157.14285714285714) internal successors, (1100), 7 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:22,390 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:15:22,390 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 323 [2023-08-30 10:15:22,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:15:22,595 INFO L130 PetriNetUnfolder]: 1145/2116 cut-off events. [2023-08-30 10:15:22,595 INFO L131 PetriNetUnfolder]: For 936/936 co-relation queries the response was YES. [2023-08-30 10:15:22,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5161 conditions, 2116 events. 1145/2116 cut-off events. For 936/936 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 13928 event pairs, 0 based on Foata normal form. 234/1936 useless extension candidates. Maximal degree in co-relation 5149. Up to 1326 conditions per place. [2023-08-30 10:15:22,605 INFO L137 encePairwiseOnDemand]: 320/323 looper letters, 78 selfloop transitions, 3 changer transitions 0/91 dead transitions. [2023-08-30 10:15:22,606 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 91 transitions, 376 flow [2023-08-30 10:15:22,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 10:15:22,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 10:15:22,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 858 transitions. [2023-08-30 10:15:22,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5312693498452012 [2023-08-30 10:15:22,609 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 858 transitions. [2023-08-30 10:15:22,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 858 transitions. [2023-08-30 10:15:22,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:15:22,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 858 transitions. [2023-08-30 10:15:22,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 171.6) internal successors, (858), 5 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:22,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 323.0) internal successors, (1938), 6 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:22,614 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 323.0) internal successors, (1938), 6 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:22,614 INFO L175 Difference]: Start difference. First operand has 80 places, 75 transitions, 188 flow. Second operand 5 states and 858 transitions. [2023-08-30 10:15:22,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 91 transitions, 376 flow [2023-08-30 10:15:22,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 91 transitions, 373 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 10:15:22,618 INFO L231 Difference]: Finished difference. Result has 57 places, 47 transitions, 127 flow [2023-08-30 10:15:22,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=127, PETRI_PLACES=57, PETRI_TRANSITIONS=47} [2023-08-30 10:15:22,619 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -19 predicate places. [2023-08-30 10:15:22,620 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 47 transitions, 127 flow [2023-08-30 10:15:22,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 157.14285714285714) internal successors, (1100), 7 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:22,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:15:22,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:15:22,628 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 10:15:22,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-08-30 10:15:22,826 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 10:15:22,826 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:15:22,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1586328005, now seen corresponding path program 1 times [2023-08-30 10:15:22,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:15:22,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664508574] [2023-08-30 10:15:22,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:15:22,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:15:22,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:15:22,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:15:22,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:15:22,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664508574] [2023-08-30 10:15:22,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664508574] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:15:22,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:15:22,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:15:22,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057199981] [2023-08-30 10:15:22,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:15:22,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:15:22,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:15:22,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:15:22,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:15:22,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 323 [2023-08-30 10:15:22,873 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 47 transitions, 127 flow. Second operand has 3 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:22,873 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:15:22,873 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 323 [2023-08-30 10:15:22,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:15:22,890 INFO L130 PetriNetUnfolder]: 66/137 cut-off events. [2023-08-30 10:15:22,891 INFO L131 PetriNetUnfolder]: For 141/141 co-relation queries the response was YES. [2023-08-30 10:15:22,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 375 conditions, 137 events. 66/137 cut-off events. For 141/141 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 430 event pairs, 66 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 362. Up to 128 conditions per place. [2023-08-30 10:15:22,891 INFO L137 encePairwiseOnDemand]: 320/323 looper letters, 0 selfloop transitions, 0 changer transitions 15/15 dead transitions. [2023-08-30 10:15:22,891 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 15 transitions, 89 flow [2023-08-30 10:15:22,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:15:22,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:15:22,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 460 transitions. [2023-08-30 10:15:22,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47471620227038186 [2023-08-30 10:15:22,893 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 460 transitions. [2023-08-30 10:15:22,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 460 transitions. [2023-08-30 10:15:22,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:15:22,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 460 transitions. [2023-08-30 10:15:22,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:22,897 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:22,898 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:22,899 INFO L175 Difference]: Start difference. First operand has 57 places, 47 transitions, 127 flow. Second operand 3 states and 460 transitions. [2023-08-30 10:15:22,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 15 transitions, 89 flow [2023-08-30 10:15:22,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 15 transitions, 82 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-30 10:15:22,900 INFO L231 Difference]: Finished difference. Result has 26 places, 0 transitions, 0 flow [2023-08-30 10:15:22,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=26, PETRI_TRANSITIONS=0} [2023-08-30 10:15:22,901 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -50 predicate places. [2023-08-30 10:15:22,903 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 0 transitions, 0 flow [2023-08-30 10:15:22,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:22,903 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 20 remaining) [2023-08-30 10:15:22,906 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 20 remaining) [2023-08-30 10:15:22,906 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 20 remaining) [2023-08-30 10:15:22,906 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 20 remaining) [2023-08-30 10:15:22,907 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 20 remaining) [2023-08-30 10:15:22,907 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 20 remaining) [2023-08-30 10:15:22,907 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 20 remaining) [2023-08-30 10:15:22,907 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 20 remaining) [2023-08-30 10:15:22,907 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 20 remaining) [2023-08-30 10:15:22,907 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 20 remaining) [2023-08-30 10:15:22,908 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 20 remaining) [2023-08-30 10:15:22,908 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 20 remaining) [2023-08-30 10:15:22,908 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 20 remaining) [2023-08-30 10:15:22,908 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 20 remaining) [2023-08-30 10:15:22,909 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 20 remaining) [2023-08-30 10:15:22,909 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 20 remaining) [2023-08-30 10:15:22,909 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 20 remaining) [2023-08-30 10:15:22,909 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 20 remaining) [2023-08-30 10:15:22,909 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 20 remaining) [2023-08-30 10:15:22,909 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 20 remaining) [2023-08-30 10:15:22,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 10:15:22,910 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-30 10:15:22,911 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-30 10:15:22,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 188 transitions, 394 flow [2023-08-30 10:15:22,937 INFO L130 PetriNetUnfolder]: 51/348 cut-off events. [2023-08-30 10:15:22,937 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 10:15:22,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 362 conditions, 348 events. 51/348 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1277 event pairs, 0 based on Foata normal form. 0/263 useless extension candidates. Maximal degree in co-relation 211. Up to 9 conditions per place. [2023-08-30 10:15:22,939 INFO L82 GeneralOperation]: Start removeDead. Operand has 166 places, 188 transitions, 394 flow [2023-08-30 10:15:22,941 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 166 places, 188 transitions, 394 flow [2023-08-30 10:15:22,941 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:15:22,941 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 166 places, 188 transitions, 394 flow [2023-08-30 10:15:22,941 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 166 places, 188 transitions, 394 flow [2023-08-30 10:15:22,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 188 transitions, 394 flow [2023-08-30 10:15:22,964 INFO L130 PetriNetUnfolder]: 51/348 cut-off events. [2023-08-30 10:15:22,965 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 10:15:22,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 362 conditions, 348 events. 51/348 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1277 event pairs, 0 based on Foata normal form. 0/263 useless extension candidates. Maximal degree in co-relation 211. Up to 9 conditions per place. [2023-08-30 10:15:22,975 INFO L119 LiptonReduction]: Number of co-enabled transitions 15756 [2023-08-30 10:15:25,310 INFO L134 LiptonReduction]: Checked pairs total: 47918 [2023-08-30 10:15:25,310 INFO L136 LiptonReduction]: Total number of compositions: 135 [2023-08-30 10:15:25,312 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-30 10:15:25,312 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;@777f4211, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:15:25,312 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-30 10:15:25,317 INFO L130 PetriNetUnfolder]: 24/107 cut-off events. [2023-08-30 10:15:25,317 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 10:15:25,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:15:25,318 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-30 10:15:25,318 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 10:15:25,318 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:15:25,319 INFO L85 PathProgramCache]: Analyzing trace with hash 41249146, now seen corresponding path program 1 times [2023-08-30 10:15:25,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:15:25,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554770223] [2023-08-30 10:15:25,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:15:25,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:15:25,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 10:15:25,331 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 10:15:25,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 10:15:25,342 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 10:15:25,342 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 10:15:25,343 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-30 10:15:25,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 10:15:25,343 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-30 10:15:25,344 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-30 10:15:25,344 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 10:15:25,344 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-30 10:15:25,361 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 10:15:25,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 201 places, 229 transitions, 488 flow [2023-08-30 10:15:25,407 INFO L130 PetriNetUnfolder]: 77/526 cut-off events. [2023-08-30 10:15:25,408 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 10:15:25,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 554 conditions, 526 events. 77/526 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2100 event pairs, 1 based on Foata normal form. 0/397 useless extension candidates. Maximal degree in co-relation 356. Up to 16 conditions per place. [2023-08-30 10:15:25,413 INFO L82 GeneralOperation]: Start removeDead. Operand has 201 places, 229 transitions, 488 flow [2023-08-30 10:15:25,417 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 201 places, 229 transitions, 488 flow [2023-08-30 10:15:25,417 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:15:25,417 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 201 places, 229 transitions, 488 flow [2023-08-30 10:15:25,417 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 201 places, 229 transitions, 488 flow [2023-08-30 10:15:25,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 201 places, 229 transitions, 488 flow [2023-08-30 10:15:25,458 INFO L130 PetriNetUnfolder]: 77/526 cut-off events. [2023-08-30 10:15:25,459 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 10:15:25,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 554 conditions, 526 events. 77/526 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2100 event pairs, 1 based on Foata normal form. 0/397 useless extension candidates. Maximal degree in co-relation 356. Up to 16 conditions per place. [2023-08-30 10:15:25,478 INFO L119 LiptonReduction]: Number of co-enabled transitions 28548 [2023-08-30 10:15:27,979 INFO L134 LiptonReduction]: Checked pairs total: 95550 [2023-08-30 10:15:27,979 INFO L136 LiptonReduction]: Total number of compositions: 166 [2023-08-30 10:15:27,981 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 10:15:27,981 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;@777f4211, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:15:27,981 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2023-08-30 10:15:27,983 INFO L130 PetriNetUnfolder]: 2/17 cut-off events. [2023-08-30 10:15:27,983 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:15:27,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:15:27,983 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 10:15:27,984 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:15:27,984 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:15:27,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1518809005, now seen corresponding path program 1 times [2023-08-30 10:15:27,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:15:27,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848074389] [2023-08-30 10:15:27,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:15:27,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:15:27,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:15:28,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:15:28,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:15:28,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848074389] [2023-08-30 10:15:28,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848074389] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:15:28,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:15:28,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:15:28,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180815552] [2023-08-30 10:15:28,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:15:28,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:15:28,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:15:28,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:15:28,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:15:28,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 395 [2023-08-30 10:15:28,013 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 123 transitions, 276 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 10:15:28,013 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:15:28,013 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 395 [2023-08-30 10:15:28,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:15:47,983 INFO L130 PetriNetUnfolder]: 269556/371677 cut-off events. [2023-08-30 10:15:47,984 INFO L131 PetriNetUnfolder]: For 2450/2450 co-relation queries the response was YES. [2023-08-30 10:15:48,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 737435 conditions, 371677 events. 269556/371677 cut-off events. For 2450/2450 co-relation queries the response was YES. Maximal size of possible extension queue 11245. Compared 3020160 event pairs, 165963 based on Foata normal form. 52281/303385 useless extension candidates. Maximal degree in co-relation 64865. Up to 363783 conditions per place. [2023-08-30 10:15:50,070 INFO L137 encePairwiseOnDemand]: 363/395 looper letters, 92 selfloop transitions, 2 changer transitions 0/111 dead transitions. [2023-08-30 10:15:50,070 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 111 transitions, 440 flow [2023-08-30 10:15:50,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:15:50,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:15:50,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 697 transitions. [2023-08-30 10:15:50,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5881856540084388 [2023-08-30 10:15:50,073 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 697 transitions. [2023-08-30 10:15:50,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 697 transitions. [2023-08-30 10:15:50,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:15:50,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 697 transitions. [2023-08-30 10:15:50,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 232.33333333333334) internal successors, (697), 3 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:50,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:50,078 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:50,078 INFO L175 Difference]: Start difference. First operand has 97 places, 123 transitions, 276 flow. Second operand 3 states and 697 transitions. [2023-08-30 10:15:50,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 111 transitions, 440 flow [2023-08-30 10:15:50,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 111 transitions, 440 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 10:15:50,083 INFO L231 Difference]: Finished difference. Result has 100 places, 97 transitions, 238 flow [2023-08-30 10:15:50,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=238, PETRI_PLACES=100, PETRI_TRANSITIONS=97} [2023-08-30 10:15:50,083 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, 3 predicate places. [2023-08-30 10:15:50,084 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 97 transitions, 238 flow [2023-08-30 10:15:50,084 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 10:15:50,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:15:50,084 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:15:50,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 10:15:50,085 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:15:50,085 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:15:50,085 INFO L85 PathProgramCache]: Analyzing trace with hash -456807882, now seen corresponding path program 1 times [2023-08-30 10:15:50,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:15:50,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263387039] [2023-08-30 10:15:50,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:15:50,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:15:50,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:15:50,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:15:50,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:15:50,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263387039] [2023-08-30 10:15:50,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263387039] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:15:50,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:15:50,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:15:50,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543407977] [2023-08-30 10:15:50,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:15:50,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:15:50,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:15:50,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:15:50,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:15:50,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 395 [2023-08-30 10:15:50,141 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 97 transitions, 238 flow. Second operand has 3 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:15:50,141 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:15:50,141 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 395 [2023-08-30 10:15:50,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:16:07,576 INFO L130 PetriNetUnfolder]: 236881/340987 cut-off events. [2023-08-30 10:16:07,577 INFO L131 PetriNetUnfolder]: For 3277/3277 co-relation queries the response was YES. [2023-08-30 10:16:08,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 675874 conditions, 340987 events. 236881/340987 cut-off events. For 3277/3277 co-relation queries the response was YES. Maximal size of possible extension queue 9858. Compared 2902101 event pairs, 152866 based on Foata normal form. 0/252864 useless extension candidates. Maximal degree in co-relation 675835. Up to 260384 conditions per place. [2023-08-30 10:16:09,145 INFO L137 encePairwiseOnDemand]: 363/395 looper letters, 118 selfloop transitions, 12 changer transitions 1/145 dead transitions. [2023-08-30 10:16:09,146 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 145 transitions, 603 flow [2023-08-30 10:16:09,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:16:09,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:16:09,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 683 transitions. [2023-08-30 10:16:09,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5763713080168776 [2023-08-30 10:16:09,148 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 683 transitions. [2023-08-30 10:16:09,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 683 transitions. [2023-08-30 10:16:09,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:16:09,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 683 transitions. [2023-08-30 10:16:09,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.66666666666666) internal successors, (683), 3 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:09,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:09,152 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:09,152 INFO L175 Difference]: Start difference. First operand has 100 places, 97 transitions, 238 flow. Second operand 3 states and 683 transitions. [2023-08-30 10:16:09,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 145 transitions, 603 flow [2023-08-30 10:16:09,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 145 transitions, 601 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:16:09,162 INFO L231 Difference]: Finished difference. Result has 101 places, 104 transitions, 348 flow [2023-08-30 10:16:09,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=348, PETRI_PLACES=101, PETRI_TRANSITIONS=104} [2023-08-30 10:16:09,163 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, 4 predicate places. [2023-08-30 10:16:09,163 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 104 transitions, 348 flow [2023-08-30 10:16:09,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:09,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:16:09,163 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 10:16:09,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 10:16:09,164 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:16:09,164 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:16:09,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1063121609, now seen corresponding path program 1 times [2023-08-30 10:16:09,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:16:09,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231624214] [2023-08-30 10:16:09,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:16:09,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:16:09,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:16:09,188 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 10:16:09,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:16:09,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231624214] [2023-08-30 10:16:09,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231624214] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:16:09,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:16:09,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:16:09,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114209280] [2023-08-30 10:16:09,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:16:09,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:16:09,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:16:09,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:16:09,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:16:09,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 395 [2023-08-30 10:16:09,199 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 104 transitions, 348 flow. Second operand has 3 states, 3 states have (on average 190.33333333333334) internal successors, (571), 3 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:09,199 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:16:09,199 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 395 [2023-08-30 10:16:09,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:16:27,793 INFO L130 PetriNetUnfolder]: 228963/332551 cut-off events. [2023-08-30 10:16:27,793 INFO L131 PetriNetUnfolder]: For 73370/74359 co-relation queries the response was YES. [2023-08-30 10:16:28,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 796887 conditions, 332551 events. 228963/332551 cut-off events. For 73370/74359 co-relation queries the response was YES. Maximal size of possible extension queue 9755. Compared 2860220 event pairs, 170616 based on Foata normal form. 0/288386 useless extension candidates. Maximal degree in co-relation 554907. Up to 317449 conditions per place. [2023-08-30 10:16:29,733 INFO L137 encePairwiseOnDemand]: 391/395 looper letters, 91 selfloop transitions, 4 changer transitions 0/112 dead transitions. [2023-08-30 10:16:29,734 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 112 transitions, 556 flow [2023-08-30 10:16:29,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:16:29,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:16:29,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 650 transitions. [2023-08-30 10:16:29,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5485232067510548 [2023-08-30 10:16:29,736 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 650 transitions. [2023-08-30 10:16:29,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 650 transitions. [2023-08-30 10:16:29,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:16:29,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 650 transitions. [2023-08-30 10:16:29,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 216.66666666666666) internal successors, (650), 3 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:29,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:29,740 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:29,740 INFO L175 Difference]: Start difference. First operand has 101 places, 104 transitions, 348 flow. Second operand 3 states and 650 transitions. [2023-08-30 10:16:29,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 112 transitions, 556 flow [2023-08-30 10:16:48,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 112 transitions, 530 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 10:16:48,893 INFO L231 Difference]: Finished difference. Result has 99 places, 104 transitions, 334 flow [2023-08-30 10:16:48,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=334, PETRI_PLACES=99, PETRI_TRANSITIONS=104} [2023-08-30 10:16:48,893 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, 2 predicate places. [2023-08-30 10:16:48,894 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 104 transitions, 334 flow [2023-08-30 10:16:48,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 190.33333333333334) internal successors, (571), 3 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:48,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:16:48,894 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 10:16:48,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 10:16:48,894 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:16:48,895 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:16:48,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1063121610, now seen corresponding path program 1 times [2023-08-30 10:16:48,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:16:48,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406235153] [2023-08-30 10:16:48,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:16:48,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:16:48,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:16:48,922 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:16:48,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:16:48,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406235153] [2023-08-30 10:16:48,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406235153] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:16:48,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:16:48,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:16:48,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139997233] [2023-08-30 10:16:48,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:16:48,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:16:48,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:16:48,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:16:48,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:16:48,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 395 [2023-08-30 10:16:48,935 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 104 transitions, 334 flow. Second operand has 3 states, 3 states have (on average 191.33333333333334) internal successors, (574), 3 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:16:48,935 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:16:48,936 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 395 [2023-08-30 10:16:48,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:17:08,496 INFO L130 PetriNetUnfolder]: 228638/332018 cut-off events. [2023-08-30 10:17:08,496 INFO L131 PetriNetUnfolder]: For 42518/43557 co-relation queries the response was YES. [2023-08-30 10:17:09,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 777186 conditions, 332018 events. 228638/332018 cut-off events. For 42518/43557 co-relation queries the response was YES. Maximal size of possible extension queue 9750. Compared 2858178 event pairs, 200911 based on Foata normal form. 66/277476 useless extension candidates. Maximal degree in co-relation 546206. Up to 317607 conditions per place. [2023-08-30 10:17:10,497 INFO L137 encePairwiseOnDemand]: 393/395 looper letters, 85 selfloop transitions, 1 changer transitions 0/103 dead transitions. [2023-08-30 10:17:10,497 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 103 transitions, 502 flow [2023-08-30 10:17:10,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:17:10,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:17:10,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 643 transitions. [2023-08-30 10:17:10,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5426160337552742 [2023-08-30 10:17:10,499 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 643 transitions. [2023-08-30 10:17:10,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 643 transitions. [2023-08-30 10:17:10,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:17:10,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 643 transitions. [2023-08-30 10:17:10,500 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 214.33333333333334) internal successors, (643), 3 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:10,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:10,502 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:10,502 INFO L175 Difference]: Start difference. First operand has 99 places, 104 transitions, 334 flow. Second operand 3 states and 643 transitions. [2023-08-30 10:17:10,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 103 transitions, 502 flow [2023-08-30 10:17:10,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 103 transitions, 498 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:17:10,562 INFO L231 Difference]: Finished difference. Result has 99 places, 103 transitions, 328 flow [2023-08-30 10:17:10,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=328, PETRI_PLACES=99, PETRI_TRANSITIONS=103} [2023-08-30 10:17:10,563 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, 2 predicate places. [2023-08-30 10:17:10,563 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 103 transitions, 328 flow [2023-08-30 10:17:10,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 191.33333333333334) internal successors, (574), 3 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:10,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:17:10,564 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:17:10,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 10:17:10,564 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:17:10,564 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:17:10,564 INFO L85 PathProgramCache]: Analyzing trace with hash -983657471, now seen corresponding path program 1 times [2023-08-30 10:17:10,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:17:10,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615431604] [2023-08-30 10:17:10,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:17:10,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:17:10,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:17:10,599 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:17:10,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:17:10,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615431604] [2023-08-30 10:17:10,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615431604] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:17:10,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787137600] [2023-08-30 10:17:10,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:17:10,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:17:10,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:17:10,611 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:17:10,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 10:17:10,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:17:10,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 10:17:10,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:17:10,695 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:17:10,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:17:10,711 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:17:10,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787137600] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:17:10,711 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:17:10,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 10:17:10,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81165547] [2023-08-30 10:17:10,711 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:17:10,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:17:10,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:17:10,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:17:10,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:17:10,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 395 [2023-08-30 10:17:10,733 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 103 transitions, 328 flow. Second operand has 7 states, 7 states have (on average 190.57142857142858) internal successors, (1334), 7 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:10,733 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:17:10,734 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 395 [2023-08-30 10:17:10,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:17:10,800 INFO L130 PetriNetUnfolder]: 412/660 cut-off events. [2023-08-30 10:17:10,801 INFO L131 PetriNetUnfolder]: For 369/369 co-relation queries the response was YES. [2023-08-30 10:17:10,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1703 conditions, 660 events. 412/660 cut-off events. For 369/369 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2631 event pairs, 19 based on Foata normal form. 77/710 useless extension candidates. Maximal degree in co-relation 1688. Up to 394 conditions per place. [2023-08-30 10:17:10,802 INFO L137 encePairwiseOnDemand]: 392/395 looper letters, 0 selfloop transitions, 0 changer transitions 36/36 dead transitions. [2023-08-30 10:17:10,802 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 36 transitions, 194 flow [2023-08-30 10:17:10,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 10:17:10,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 10:17:10,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1165 transitions. [2023-08-30 10:17:10,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49156118143459915 [2023-08-30 10:17:10,805 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1165 transitions. [2023-08-30 10:17:10,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1165 transitions. [2023-08-30 10:17:10,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:17:10,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1165 transitions. [2023-08-30 10:17:10,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 194.16666666666666) internal successors, (1165), 6 states have internal predecessors, (1165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:10,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 395.0) internal successors, (2765), 7 states have internal predecessors, (2765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:10,812 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 395.0) internal successors, (2765), 7 states have internal predecessors, (2765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:10,812 INFO L175 Difference]: Start difference. First operand has 99 places, 103 transitions, 328 flow. Second operand 6 states and 1165 transitions. [2023-08-30 10:17:10,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 36 transitions, 194 flow [2023-08-30 10:17:10,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 36 transitions, 190 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-30 10:17:10,814 INFO L231 Difference]: Finished difference. Result has 33 places, 0 transitions, 0 flow [2023-08-30 10:17:10,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=33, PETRI_TRANSITIONS=0} [2023-08-30 10:17:10,815 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -64 predicate places. [2023-08-30 10:17:10,815 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 0 transitions, 0 flow [2023-08-30 10:17:10,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 190.57142857142858) internal successors, (1334), 7 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:10,816 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 24 remaining) [2023-08-30 10:17:10,816 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 24 remaining) [2023-08-30 10:17:10,817 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 24 remaining) [2023-08-30 10:17:10,817 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 24 remaining) [2023-08-30 10:17:10,817 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 24 remaining) [2023-08-30 10:17:10,817 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 24 remaining) [2023-08-30 10:17:10,817 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 24 remaining) [2023-08-30 10:17:10,818 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 24 remaining) [2023-08-30 10:17:10,818 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 24 remaining) [2023-08-30 10:17:10,818 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 24 remaining) [2023-08-30 10:17:10,818 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 24 remaining) [2023-08-30 10:17:10,818 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 24 remaining) [2023-08-30 10:17:10,819 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 24 remaining) [2023-08-30 10:17:10,819 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 24 remaining) [2023-08-30 10:17:10,819 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 24 remaining) [2023-08-30 10:17:10,819 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 24 remaining) [2023-08-30 10:17:10,819 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 24 remaining) [2023-08-30 10:17:10,819 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 24 remaining) [2023-08-30 10:17:10,820 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 24 remaining) [2023-08-30 10:17:10,820 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 24 remaining) [2023-08-30 10:17:10,820 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 24 remaining) [2023-08-30 10:17:10,820 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 24 remaining) [2023-08-30 10:17:10,820 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 24 remaining) [2023-08-30 10:17:10,821 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 24 remaining) [2023-08-30 10:17:10,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 10:17:11,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:17:11,026 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-30 10:17:11,027 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-30 10:17:11,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 201 places, 229 transitions, 488 flow [2023-08-30 10:17:11,068 INFO L130 PetriNetUnfolder]: 77/526 cut-off events. [2023-08-30 10:17:11,068 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 10:17:11,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 554 conditions, 526 events. 77/526 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2100 event pairs, 1 based on Foata normal form. 0/397 useless extension candidates. Maximal degree in co-relation 356. Up to 16 conditions per place. [2023-08-30 10:17:11,072 INFO L82 GeneralOperation]: Start removeDead. Operand has 201 places, 229 transitions, 488 flow [2023-08-30 10:17:11,074 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 201 places, 229 transitions, 488 flow [2023-08-30 10:17:11,074 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:17:11,074 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 201 places, 229 transitions, 488 flow [2023-08-30 10:17:11,074 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 201 places, 229 transitions, 488 flow [2023-08-30 10:17:11,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 201 places, 229 transitions, 488 flow [2023-08-30 10:17:11,115 INFO L130 PetriNetUnfolder]: 77/526 cut-off events. [2023-08-30 10:17:11,115 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 10:17:11,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 554 conditions, 526 events. 77/526 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2100 event pairs, 1 based on Foata normal form. 0/397 useless extension candidates. Maximal degree in co-relation 356. Up to 16 conditions per place. [2023-08-30 10:17:11,132 INFO L119 LiptonReduction]: Number of co-enabled transitions 28548 [2023-08-30 10:17:13,507 INFO L134 LiptonReduction]: Checked pairs total: 95292 [2023-08-30 10:17:13,507 INFO L136 LiptonReduction]: Total number of compositions: 166 [2023-08-30 10:17:13,509 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-30 10:17:13,509 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;@777f4211, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:17:13,509 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-30 10:17:13,519 INFO L130 PetriNetUnfolder]: 41/174 cut-off events. [2023-08-30 10:17:13,519 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-08-30 10:17:13,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:17:13,519 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-30 10:17:13,520 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 10:17:13,520 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:17:13,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1339931425, now seen corresponding path program 1 times [2023-08-30 10:17:13,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:17:13,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214196073] [2023-08-30 10:17:13,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:17:13,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:17:13,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 10:17:13,533 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 10:17:13,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 10:17:13,545 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 10:17:13,545 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 10:17:13,545 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-30 10:17:13,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 10:17:13,546 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-30 10:17:13,546 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-30 10:17:13,546 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 10:17:13,547 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-30 10:17:13,564 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-30 10:17:13,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 236 places, 270 transitions, 584 flow [2023-08-30 10:17:13,798 INFO L130 PetriNetUnfolder]: 115/784 cut-off events. [2023-08-30 10:17:13,799 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-30 10:17:13,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 839 conditions, 784 events. 115/784 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3460 event pairs, 6 based on Foata normal form. 0/595 useless extension candidates. Maximal degree in co-relation 546. Up to 32 conditions per place. [2023-08-30 10:17:13,805 INFO L82 GeneralOperation]: Start removeDead. Operand has 236 places, 270 transitions, 584 flow [2023-08-30 10:17:13,810 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 236 places, 270 transitions, 584 flow [2023-08-30 10:17:13,810 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:17:13,811 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 236 places, 270 transitions, 584 flow [2023-08-30 10:17:13,811 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 236 places, 270 transitions, 584 flow [2023-08-30 10:17:13,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 236 places, 270 transitions, 584 flow [2023-08-30 10:17:13,871 INFO L130 PetriNetUnfolder]: 115/784 cut-off events. [2023-08-30 10:17:13,871 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-30 10:17:13,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 839 conditions, 784 events. 115/784 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3460 event pairs, 6 based on Foata normal form. 0/595 useless extension candidates. Maximal degree in co-relation 546. Up to 32 conditions per place. [2023-08-30 10:17:13,903 INFO L119 LiptonReduction]: Number of co-enabled transitions 44616 [2023-08-30 10:17:16,334 INFO L134 LiptonReduction]: Checked pairs total: 154837 [2023-08-30 10:17:16,334 INFO L136 LiptonReduction]: Total number of compositions: 191 [2023-08-30 10:17:16,336 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 10:17:16,336 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;@777f4211, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:17:16,336 INFO L358 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2023-08-30 10:17:16,338 INFO L130 PetriNetUnfolder]: 2/17 cut-off events. [2023-08-30 10:17:16,338 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:17:16,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:17:16,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 10:17:16,338 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-30 10:17:16,338 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:17:16,338 INFO L85 PathProgramCache]: Analyzing trace with hash -2139075726, now seen corresponding path program 1 times [2023-08-30 10:17:16,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:17:16,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797989218] [2023-08-30 10:17:16,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:17:16,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:17:16,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:17:16,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:17:16,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:17:16,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797989218] [2023-08-30 10:17:16,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797989218] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:17:16,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:17:16,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:17:16,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495759940] [2023-08-30 10:17:16,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:17:16,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:17:16,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:17:16,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:17:16,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:17:16,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 461 [2023-08-30 10:17:16,369 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 150 transitions, 344 flow. Second operand has 3 states, 3 states have (on average 223.0) internal successors, (669), 3 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:17:16,369 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:17:16,369 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 461 [2023-08-30 10:17:16,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand