./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_27-funptr_racing.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_27-funptr_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 8d24e1fe59577ae07a5b7a898c9dc79f871eafbb8fdf9529a0c24eed9c094f3d --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 14:12:32,892 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 14:12:32,894 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 14:12:32,934 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 14:12:32,936 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 14:12:32,939 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 14:12:32,940 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 14:12:32,943 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 14:12:32,945 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 14:12:32,949 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 14:12:32,950 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 14:12:32,952 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 14:12:32,953 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 14:12:32,954 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 14:12:32,956 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 14:12:32,961 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 14:12:32,962 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 14:12:32,963 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 14:12:32,965 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 14:12:32,971 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 14:12:32,978 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 14:12:32,979 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 14:12:32,981 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 14:12:32,982 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 14:12:32,988 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 14:12:32,989 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 14:12:32,989 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 14:12:32,991 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 14:12:32,991 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 14:12:32,992 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 14:12:32,992 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 14:12:32,997 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 14:12:32,999 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 14:12:32,999 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 14:12:33,000 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 14:12:33,001 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 14:12:33,002 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 14:12:33,002 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 14:12:33,002 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 14:12:33,003 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 14:12:33,004 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 14:12:33,005 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 14:12:33,037 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 14:12:33,038 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 14:12:33,039 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 14:12:33,039 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 14:12:33,040 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 14:12:33,040 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 14:12:33,040 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 14:12:33,041 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 14:12:33,041 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 14:12:33,041 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 14:12:33,042 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 14:12:33,042 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 14:12:33,042 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 14:12:33,042 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 14:12:33,043 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 14:12:33,043 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 14:12:33,043 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 14:12:33,043 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 14:12:33,043 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 14:12:33,043 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 14:12:33,044 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 14:12:33,044 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 14:12:33,044 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 14:12:33,044 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 14:12:33,044 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 14:12:33,045 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 14:12:33,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:12:33,045 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 14:12:33,045 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 14:12:33,045 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 14:12:33,046 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 14:12:33,046 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 14:12:33,046 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 14:12:33,046 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 14:12:33,047 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 14:12:33,047 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 14:12:33,047 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 14:12:33,047 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d24e1fe59577ae07a5b7a898c9dc79f871eafbb8fdf9529a0c24eed9c094f3d Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 14:12:33,321 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 14:12:33,342 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 14:12:33,344 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 14:12:33,345 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 14:12:33,346 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 14:12:33,347 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_27-funptr_racing.i [2023-08-30 14:12:34,605 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 14:12:34,908 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 14:12:34,908 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_27-funptr_racing.i [2023-08-30 14:12:34,923 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7bdbd948/402dce0690a84dcda1772baa81aa3eec/FLAG52a8d7e4b [2023-08-30 14:12:34,937 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7bdbd948/402dce0690a84dcda1772baa81aa3eec [2023-08-30 14:12:34,940 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 14:12:34,940 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 14:12:34,941 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 14:12:34,942 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 14:12:34,946 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 14:12:34,947 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:12:34" (1/1) ... [2023-08-30 14:12:34,948 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20383e3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:12:34, skipping insertion in model container [2023-08-30 14:12:34,949 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:12:34" (1/1) ... [2023-08-30 14:12:34,955 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 14:12:35,004 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 14:12:35,428 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_27-funptr_racing.i[41323,41336] [2023-08-30 14:12:35,515 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:12:35,535 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 14:12:35,562 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_27-funptr_racing.i[41323,41336] [2023-08-30 14:12:35,569 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:12:35,632 WARN L667 CHandler]: The function g is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 14:12:35,639 INFO L208 MainTranslator]: Completed translation [2023-08-30 14:12:35,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:12:35 WrapperNode [2023-08-30 14:12:35,639 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 14:12:35,641 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 14:12:35,641 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 14:12:35,641 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 14:12:35,647 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:12:35" (1/1) ... [2023-08-30 14:12:35,678 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:12:35" (1/1) ... [2023-08-30 14:12:35,711 INFO L138 Inliner]: procedures = 273, calls = 43, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 160 [2023-08-30 14:12:35,712 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 14:12:35,713 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 14:12:35,713 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 14:12:35,713 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 14:12:35,721 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:12:35" (1/1) ... [2023-08-30 14:12:35,722 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:12:35" (1/1) ... [2023-08-30 14:12:35,738 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:12:35" (1/1) ... [2023-08-30 14:12:35,739 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:12:35" (1/1) ... [2023-08-30 14:12:35,745 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:12:35" (1/1) ... [2023-08-30 14:12:35,756 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:12:35" (1/1) ... [2023-08-30 14:12:35,759 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:12:35" (1/1) ... [2023-08-30 14:12:35,768 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:12:35" (1/1) ... [2023-08-30 14:12:35,770 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 14:12:35,771 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 14:12:35,771 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 14:12:35,771 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 14:12:35,786 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:12:35" (1/1) ... [2023-08-30 14:12:35,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:12:35,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:12:35,822 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 14:12:35,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 14:12:35,866 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 14:12:35,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 14:12:35,866 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 14:12:35,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 14:12:35,866 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 14:12:35,866 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 14:12:35,867 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-30 14:12:35,867 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-30 14:12:35,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 14:12:35,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 14:12:35,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 14:12:35,868 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 14:12:36,051 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 14:12:36,052 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 14:12:36,304 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 14:12:36,311 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 14:12:36,311 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-08-30 14:12:36,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:12:36 BoogieIcfgContainer [2023-08-30 14:12:36,313 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 14:12:36,315 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 14:12:36,315 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 14:12:36,325 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 14:12:36,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 02:12:34" (1/3) ... [2023-08-30 14:12:36,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d60ddd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:12:36, skipping insertion in model container [2023-08-30 14:12:36,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:12:35" (2/3) ... [2023-08-30 14:12:36,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d60ddd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:12:36, skipping insertion in model container [2023-08-30 14:12:36,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:12:36" (3/3) ... [2023-08-30 14:12:36,343 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_27-funptr_racing.i [2023-08-30 14:12:36,350 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 14:12:36,358 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 14:12:36,373 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-08-30 14:12:36,373 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 14:12:36,483 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-30 14:12:36,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 152 places, 168 transitions, 344 flow [2023-08-30 14:12:36,635 INFO L130 PetriNetUnfolder]: 24/204 cut-off events. [2023-08-30 14:12:36,636 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:12:36,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210 conditions, 204 events. 24/204 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 586 event pairs, 0 based on Foata normal form. 0/165 useless extension candidates. Maximal degree in co-relation 123. Up to 4 conditions per place. [2023-08-30 14:12:36,643 INFO L82 GeneralOperation]: Start removeDead. Operand has 152 places, 168 transitions, 344 flow [2023-08-30 14:12:36,652 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 150 places, 165 transitions, 338 flow [2023-08-30 14:12:36,661 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:12:36,673 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 150 places, 165 transitions, 338 flow [2023-08-30 14:12:36,679 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 150 places, 165 transitions, 338 flow [2023-08-30 14:12:36,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 150 places, 165 transitions, 338 flow [2023-08-30 14:12:36,729 INFO L130 PetriNetUnfolder]: 23/201 cut-off events. [2023-08-30 14:12:36,729 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:12:36,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207 conditions, 201 events. 23/201 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 583 event pairs, 0 based on Foata normal form. 0/163 useless extension candidates. Maximal degree in co-relation 123. Up to 4 conditions per place. [2023-08-30 14:12:36,746 INFO L119 LiptonReduction]: Number of co-enabled transitions 7176 [2023-08-30 14:12:40,437 INFO L134 LiptonReduction]: Checked pairs total: 12956 [2023-08-30 14:12:40,438 INFO L136 LiptonReduction]: Total number of compositions: 141 [2023-08-30 14:12:40,450 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:12:40,455 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;@455b1045, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:12:40,456 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-08-30 14:12:40,458 INFO L130 PetriNetUnfolder]: 0/6 cut-off events. [2023-08-30 14:12:40,458 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:12:40,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:12:40,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 14:12:40,460 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:12:40,463 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:12:40,464 INFO L85 PathProgramCache]: Analyzing trace with hash 20463098, now seen corresponding path program 1 times [2023-08-30 14:12:40,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:12:40,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998492583] [2023-08-30 14:12:40,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:12:40,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:12:40,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:12:40,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:12:40,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:12:40,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998492583] [2023-08-30 14:12:40,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998492583] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:12:40,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:12:40,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:12:40,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203043519] [2023-08-30 14:12:40,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:12:40,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:12:40,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:12:40,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:12:40,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:12:40,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 309 [2023-08-30 14:12:40,720 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 65 transitions, 138 flow. Second operand has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:40,720 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:12:40,720 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 309 [2023-08-30 14:12:40,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:12:40,862 INFO L130 PetriNetUnfolder]: 251/585 cut-off events. [2023-08-30 14:12:40,862 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:12:40,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1147 conditions, 585 events. 251/585 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3432 event pairs, 0 based on Foata normal form. 22/482 useless extension candidates. Maximal degree in co-relation 1079. Up to 504 conditions per place. [2023-08-30 14:12:40,866 INFO L137 encePairwiseOnDemand]: 288/309 looper letters, 64 selfloop transitions, 2 changer transitions 0/72 dead transitions. [2023-08-30 14:12:40,867 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 72 transitions, 284 flow [2023-08-30 14:12:40,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:12:40,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:12:40,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 529 transitions. [2023-08-30 14:12:40,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5706580366774542 [2023-08-30 14:12:40,880 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 529 transitions. [2023-08-30 14:12:40,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 529 transitions. [2023-08-30 14:12:40,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:12:40,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 529 transitions. [2023-08-30 14:12:40,888 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 14:12:40,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:40,894 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:40,895 INFO L175 Difference]: Start difference. First operand has 52 places, 65 transitions, 138 flow. Second operand 3 states and 529 transitions. [2023-08-30 14:12:40,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 72 transitions, 284 flow [2023-08-30 14:12:40,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 72 transitions, 284 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:12:40,902 INFO L231 Difference]: Finished difference. Result has 51 places, 46 transitions, 108 flow [2023-08-30 14:12:40,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=51, PETRI_TRANSITIONS=46} [2023-08-30 14:12:40,906 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -1 predicate places. [2023-08-30 14:12:40,907 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 46 transitions, 108 flow [2023-08-30 14:12:40,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:40,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:12:40,908 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-30 14:12:40,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 14:12:40,908 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:12:40,909 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:12:40,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1809735042, now seen corresponding path program 1 times [2023-08-30 14:12:40,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:12:40,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877160403] [2023-08-30 14:12:40,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:12:40,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:12:40,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:12:40,934 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 14:12:40,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:12:40,965 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 14:12:40,966 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 14:12:40,967 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2023-08-30 14:12:40,968 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2023-08-30 14:12:40,969 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2023-08-30 14:12:40,969 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2023-08-30 14:12:40,969 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2023-08-30 14:12:40,969 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2023-08-30 14:12:40,970 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2023-08-30 14:12:40,970 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2023-08-30 14:12:40,970 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2023-08-30 14:12:40,970 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2023-08-30 14:12:40,971 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2023-08-30 14:12:40,971 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2023-08-30 14:12:40,971 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2023-08-30 14:12:40,971 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2023-08-30 14:12:40,971 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2023-08-30 14:12:40,972 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2023-08-30 14:12:40,972 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2023-08-30 14:12:40,972 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2023-08-30 14:12:40,972 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2023-08-30 14:12:40,973 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2023-08-30 14:12:40,973 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2023-08-30 14:12:40,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 14:12:40,973 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-30 14:12:40,977 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 14:12:40,978 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-30 14:12:41,008 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 14:12:41,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 220 places, 248 transitions, 514 flow [2023-08-30 14:12:41,065 INFO L130 PetriNetUnfolder]: 45/356 cut-off events. [2023-08-30 14:12:41,065 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 14:12:41,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 370 conditions, 356 events. 45/356 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1305 event pairs, 0 based on Foata normal form. 0/281 useless extension candidates. Maximal degree in co-relation 220. Up to 8 conditions per place. [2023-08-30 14:12:41,068 INFO L82 GeneralOperation]: Start removeDead. Operand has 220 places, 248 transitions, 514 flow [2023-08-30 14:12:41,072 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 220 places, 248 transitions, 514 flow [2023-08-30 14:12:41,072 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:12:41,073 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 220 places, 248 transitions, 514 flow [2023-08-30 14:12:41,074 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 220 places, 248 transitions, 514 flow [2023-08-30 14:12:41,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 220 places, 248 transitions, 514 flow [2023-08-30 14:12:41,139 INFO L130 PetriNetUnfolder]: 45/356 cut-off events. [2023-08-30 14:12:41,139 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 14:12:41,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 370 conditions, 356 events. 45/356 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1305 event pairs, 0 based on Foata normal form. 0/281 useless extension candidates. Maximal degree in co-relation 220. Up to 8 conditions per place. [2023-08-30 14:12:41,158 INFO L119 LiptonReduction]: Number of co-enabled transitions 29484 [2023-08-30 14:12:44,948 INFO L134 LiptonReduction]: Checked pairs total: 91762 [2023-08-30 14:12:44,949 INFO L136 LiptonReduction]: Total number of compositions: 189 [2023-08-30 14:12:44,952 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:12:44,953 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;@455b1045, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:12:44,953 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2023-08-30 14:12:44,955 INFO L130 PetriNetUnfolder]: 0/9 cut-off events. [2023-08-30 14:12:44,955 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:12:44,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:12:44,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 14:12:44,956 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-30 14:12:44,956 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:12:44,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1127912703, now seen corresponding path program 1 times [2023-08-30 14:12:44,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:12:44,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77765639] [2023-08-30 14:12:44,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:12:44,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:12:44,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:12:45,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:12:45,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:12:45,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77765639] [2023-08-30 14:12:45,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77765639] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:12:45,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:12:45,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:12:45,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506684585] [2023-08-30 14:12:45,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:12:45,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:12:45,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:12:45,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:12:45,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:12:45,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 437 [2023-08-30 14:12:45,088 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 119 transitions, 256 flow. Second operand has 3 states, 3 states have (on average 211.33333333333334) internal successors, (634), 3 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:45,088 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:12:45,088 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 437 [2023-08-30 14:12:45,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:12:47,769 INFO L130 PetriNetUnfolder]: 23347/37078 cut-off events. [2023-08-30 14:12:47,770 INFO L131 PetriNetUnfolder]: For 146/146 co-relation queries the response was YES. [2023-08-30 14:12:47,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73027 conditions, 37078 events. 23347/37078 cut-off events. For 146/146 co-relation queries the response was YES. Maximal size of possible extension queue 1234. Compared 286330 event pairs, 10724 based on Foata normal form. 2499/28805 useless extension candidates. Maximal degree in co-relation 4073. Up to 35707 conditions per place. [2023-08-30 14:12:48,090 INFO L137 encePairwiseOnDemand]: 405/437 looper letters, 108 selfloop transitions, 2 changer transitions 0/122 dead transitions. [2023-08-30 14:12:48,090 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 122 transitions, 482 flow [2023-08-30 14:12:48,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:12:48,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:12:48,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 782 transitions. [2023-08-30 14:12:48,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5964912280701754 [2023-08-30 14:12:48,093 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 782 transitions. [2023-08-30 14:12:48,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 782 transitions. [2023-08-30 14:12:48,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:12:48,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 782 transitions. [2023-08-30 14:12:48,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 260.6666666666667) internal successors, (782), 3 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:48,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 437.0) internal successors, (1748), 4 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:48,101 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 437.0) internal successors, (1748), 4 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:48,101 INFO L175 Difference]: Start difference. First operand has 93 places, 119 transitions, 256 flow. Second operand 3 states and 782 transitions. [2023-08-30 14:12:48,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 122 transitions, 482 flow [2023-08-30 14:12:48,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 122 transitions, 482 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:12:48,108 INFO L231 Difference]: Finished difference. Result has 95 places, 92 transitions, 216 flow [2023-08-30 14:12:48,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=437, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=216, PETRI_PLACES=95, PETRI_TRANSITIONS=92} [2023-08-30 14:12:48,109 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 2 predicate places. [2023-08-30 14:12:48,109 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 92 transitions, 216 flow [2023-08-30 14:12:48,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 211.33333333333334) internal successors, (634), 3 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:48,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:12:48,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:12:48,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 14:12:48,111 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-30 14:12:48,111 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:12:48,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1882942038, now seen corresponding path program 1 times [2023-08-30 14:12:48,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:12:48,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244550044] [2023-08-30 14:12:48,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:12:48,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:12:48,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:12:48,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:12:48,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:12:48,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244550044] [2023-08-30 14:12:48,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244550044] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:12:48,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:12:48,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:12:48,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002353828] [2023-08-30 14:12:48,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:12:48,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:12:48,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:12:48,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:12:48,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:12:48,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 437 [2023-08-30 14:12:48,225 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 92 transitions, 216 flow. Second operand has 3 states, 3 states have (on average 207.33333333333334) internal successors, (622), 3 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:48,225 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:12:48,225 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 437 [2023-08-30 14:12:48,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:12:50,203 INFO L130 PetriNetUnfolder]: 20840/32804 cut-off events. [2023-08-30 14:12:50,204 INFO L131 PetriNetUnfolder]: For 1732/1732 co-relation queries the response was YES. [2023-08-30 14:12:50,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68035 conditions, 32804 events. 20840/32804 cut-off events. For 1732/1732 co-relation queries the response was YES. Maximal size of possible extension queue 1086. Compared 244302 event pairs, 6922 based on Foata normal form. 126/24767 useless extension candidates. Maximal degree in co-relation 67865. Up to 28715 conditions per place. [2023-08-30 14:12:50,421 INFO L137 encePairwiseOnDemand]: 424/437 looper letters, 110 selfloop transitions, 5 changer transitions 0/127 dead transitions. [2023-08-30 14:12:50,422 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 127 transitions, 532 flow [2023-08-30 14:12:50,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:12:50,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:12:50,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 736 transitions. [2023-08-30 14:12:50,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5614035087719298 [2023-08-30 14:12:50,424 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 736 transitions. [2023-08-30 14:12:50,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 736 transitions. [2023-08-30 14:12:50,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:12:50,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 736 transitions. [2023-08-30 14:12:50,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 245.33333333333334) internal successors, (736), 3 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:50,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 437.0) internal successors, (1748), 4 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:50,430 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 437.0) internal successors, (1748), 4 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:50,430 INFO L175 Difference]: Start difference. First operand has 95 places, 92 transitions, 216 flow. Second operand 3 states and 736 transitions. [2023-08-30 14:12:50,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 127 transitions, 532 flow [2023-08-30 14:12:50,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 127 transitions, 529 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:12:50,437 INFO L231 Difference]: Finished difference. Result has 97 places, 96 transitions, 261 flow [2023-08-30 14:12:50,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=437, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=261, PETRI_PLACES=97, PETRI_TRANSITIONS=96} [2023-08-30 14:12:50,440 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 4 predicate places. [2023-08-30 14:12:50,440 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 96 transitions, 261 flow [2023-08-30 14:12:50,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 207.33333333333334) internal successors, (622), 3 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:50,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:12:50,441 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:12:50,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 14:12:50,442 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-30 14:12:50,442 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:12:50,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1313199197, now seen corresponding path program 1 times [2023-08-30 14:12:50,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:12:50,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037127260] [2023-08-30 14:12:50,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:12:50,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:12:50,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:12:50,504 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 14:12:50,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:12:50,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037127260] [2023-08-30 14:12:50,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037127260] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:12:50,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:12:50,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:12:50,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969871917] [2023-08-30 14:12:50,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:12:50,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:12:50,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:12:50,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:12:50,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:12:50,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 437 [2023-08-30 14:12:50,516 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 96 transitions, 261 flow. Second operand has 3 states, 3 states have (on average 211.33333333333334) internal successors, (634), 3 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:50,516 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:12:50,517 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 437 [2023-08-30 14:12:50,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:12:52,245 INFO L130 PetriNetUnfolder]: 19342/30803 cut-off events. [2023-08-30 14:12:52,245 INFO L131 PetriNetUnfolder]: For 3004/3004 co-relation queries the response was YES. [2023-08-30 14:12:52,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66563 conditions, 30803 events. 19342/30803 cut-off events. For 3004/3004 co-relation queries the response was YES. Maximal size of possible extension queue 1014. Compared 240230 event pairs, 3520 based on Foata normal form. 0/24461 useless extension candidates. Maximal degree in co-relation 29155. Up to 23637 conditions per place. [2023-08-30 14:12:52,417 INFO L137 encePairwiseOnDemand]: 433/437 looper letters, 142 selfloop transitions, 4 changer transitions 0/158 dead transitions. [2023-08-30 14:12:52,418 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 158 transitions, 711 flow [2023-08-30 14:12:52,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:12:52,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:12:52,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 765 transitions. [2023-08-30 14:12:52,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5835240274599542 [2023-08-30 14:12:52,421 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 765 transitions. [2023-08-30 14:12:52,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 765 transitions. [2023-08-30 14:12:52,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:12:52,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 765 transitions. [2023-08-30 14:12:52,424 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 255.0) internal successors, (765), 3 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:52,428 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 437.0) internal successors, (1748), 4 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:52,429 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 437.0) internal successors, (1748), 4 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:52,430 INFO L175 Difference]: Start difference. First operand has 97 places, 96 transitions, 261 flow. Second operand 3 states and 765 transitions. [2023-08-30 14:12:52,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 158 transitions, 711 flow [2023-08-30 14:12:52,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 158 transitions, 702 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:12:52,438 INFO L231 Difference]: Finished difference. Result has 98 places, 96 transitions, 268 flow [2023-08-30 14:12:52,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=437, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=268, PETRI_PLACES=98, PETRI_TRANSITIONS=96} [2023-08-30 14:12:52,441 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 5 predicate places. [2023-08-30 14:12:52,441 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 96 transitions, 268 flow [2023-08-30 14:12:52,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 211.33333333333334) internal successors, (634), 3 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:52,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:12:52,442 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:12:52,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 14:12:52,443 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-30 14:12:52,443 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:12:52,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1313199178, now seen corresponding path program 1 times [2023-08-30 14:12:52,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:12:52,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439802557] [2023-08-30 14:12:52,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:12:52,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:12:52,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:12:52,515 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:12:52,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:12:52,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439802557] [2023-08-30 14:12:52,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439802557] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:12:52,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371100435] [2023-08-30 14:12:52,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:12:52,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:12:52,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:12:52,520 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:12:52,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 14:12:52,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:12:52,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 14:12:52,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:12:52,692 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 14:12:52,692 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:12:52,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371100435] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:12:52,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:12:52,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-30 14:12:52,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261853035] [2023-08-30 14:12:52,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:12:52,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:12:52,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:12:52,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:12:52,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:12:52,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 437 [2023-08-30 14:12:52,706 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 96 transitions, 268 flow. Second operand has 4 states, 4 states have (on average 211.75) internal successors, (847), 4 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:52,707 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:12:52,707 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 437 [2023-08-30 14:12:52,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:12:54,452 INFO L130 PetriNetUnfolder]: 17844/28452 cut-off events. [2023-08-30 14:12:54,452 INFO L131 PetriNetUnfolder]: For 8566/8566 co-relation queries the response was YES. [2023-08-30 14:12:54,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62861 conditions, 28452 events. 17844/28452 cut-off events. For 8566/8566 co-relation queries the response was YES. Maximal size of possible extension queue 904. Compared 210769 event pairs, 8872 based on Foata normal form. 753/23881 useless extension candidates. Maximal degree in co-relation 6594. Up to 27460 conditions per place. [2023-08-30 14:12:54,584 INFO L137 encePairwiseOnDemand]: 434/437 looper letters, 106 selfloop transitions, 2 changer transitions 0/120 dead transitions. [2023-08-30 14:12:54,587 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 120 transitions, 534 flow [2023-08-30 14:12:54,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 14:12:54,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 14:12:54,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 945 transitions. [2023-08-30 14:12:54,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5406178489702517 [2023-08-30 14:12:54,592 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 945 transitions. [2023-08-30 14:12:54,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 945 transitions. [2023-08-30 14:12:54,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:12:54,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 945 transitions. [2023-08-30 14:12:54,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 236.25) internal successors, (945), 4 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:54,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 437.0) internal successors, (2185), 5 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:54,603 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 437.0) internal successors, (2185), 5 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:54,603 INFO L175 Difference]: Start difference. First operand has 98 places, 96 transitions, 268 flow. Second operand 4 states and 945 transitions. [2023-08-30 14:12:54,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 120 transitions, 534 flow [2023-08-30 14:12:54,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 120 transitions, 530 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:12:54,611 INFO L231 Difference]: Finished difference. Result has 99 places, 95 transitions, 264 flow [2023-08-30 14:12:54,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=437, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=264, PETRI_PLACES=99, PETRI_TRANSITIONS=95} [2023-08-30 14:12:54,615 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 6 predicate places. [2023-08-30 14:12:54,615 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 95 transitions, 264 flow [2023-08-30 14:12:54,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 211.75) internal successors, (847), 4 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:54,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:12:54,616 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-30 14:12:54,625 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-30 14:12:54,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-08-30 14:12:54,822 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-30 14:12:54,822 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:12:54,822 INFO L85 PathProgramCache]: Analyzing trace with hash -735897808, now seen corresponding path program 1 times [2023-08-30 14:12:54,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:12:54,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919710415] [2023-08-30 14:12:54,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:12:54,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:12:54,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:12:54,834 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 14:12:54,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:12:54,854 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 14:12:54,854 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 14:12:54,854 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2023-08-30 14:12:54,855 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 29 remaining) [2023-08-30 14:12:54,855 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 29 remaining) [2023-08-30 14:12:54,855 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 29 remaining) [2023-08-30 14:12:54,855 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 29 remaining) [2023-08-30 14:12:54,855 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 29 remaining) [2023-08-30 14:12:54,856 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 29 remaining) [2023-08-30 14:12:54,856 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 29 remaining) [2023-08-30 14:12:54,856 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 29 remaining) [2023-08-30 14:12:54,856 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 29 remaining) [2023-08-30 14:12:54,856 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 29 remaining) [2023-08-30 14:12:54,857 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 29 remaining) [2023-08-30 14:12:54,860 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 29 remaining) [2023-08-30 14:12:54,861 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 29 remaining) [2023-08-30 14:12:54,861 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 29 remaining) [2023-08-30 14:12:54,861 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 29 remaining) [2023-08-30 14:12:54,861 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 29 remaining) [2023-08-30 14:12:54,861 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 29 remaining) [2023-08-30 14:12:54,862 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 29 remaining) [2023-08-30 14:12:54,862 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 29 remaining) [2023-08-30 14:12:54,862 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 29 remaining) [2023-08-30 14:12:54,862 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 29 remaining) [2023-08-30 14:12:54,862 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 29 remaining) [2023-08-30 14:12:54,863 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 29 remaining) [2023-08-30 14:12:54,863 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 29 remaining) [2023-08-30 14:12:54,863 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 29 remaining) [2023-08-30 14:12:54,863 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 29 remaining) [2023-08-30 14:12:54,863 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 29 remaining) [2023-08-30 14:12:54,864 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 29 remaining) [2023-08-30 14:12:54,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 14:12:54,864 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-30 14:12:54,865 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 14:12:54,865 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-30 14:12:54,904 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 14:12:54,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 288 places, 328 transitions, 686 flow [2023-08-30 14:12:54,990 INFO L130 PetriNetUnfolder]: 71/547 cut-off events. [2023-08-30 14:12:54,991 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 14:12:54,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 575 conditions, 547 events. 71/547 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2202 event pairs, 1 based on Foata normal form. 0/428 useless extension candidates. Maximal degree in co-relation 364. Up to 16 conditions per place. [2023-08-30 14:12:54,999 INFO L82 GeneralOperation]: Start removeDead. Operand has 288 places, 328 transitions, 686 flow [2023-08-30 14:12:55,009 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 288 places, 328 transitions, 686 flow [2023-08-30 14:12:55,009 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:12:55,009 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 288 places, 328 transitions, 686 flow [2023-08-30 14:12:55,009 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 288 places, 328 transitions, 686 flow [2023-08-30 14:12:55,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 288 places, 328 transitions, 686 flow [2023-08-30 14:12:55,075 INFO L130 PetriNetUnfolder]: 71/547 cut-off events. [2023-08-30 14:12:55,075 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 14:12:55,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 575 conditions, 547 events. 71/547 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2202 event pairs, 1 based on Foata normal form. 0/428 useless extension candidates. Maximal degree in co-relation 364. Up to 16 conditions per place. [2023-08-30 14:12:55,108 INFO L119 LiptonReduction]: Number of co-enabled transitions 63180 [2023-08-30 14:12:59,232 INFO L134 LiptonReduction]: Checked pairs total: 189600 [2023-08-30 14:12:59,232 INFO L136 LiptonReduction]: Total number of compositions: 244 [2023-08-30 14:12:59,234 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:12:59,234 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;@455b1045, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:12:59,235 INFO L358 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2023-08-30 14:12:59,236 INFO L130 PetriNetUnfolder]: 0/9 cut-off events. [2023-08-30 14:12:59,236 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:12:59,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:12:59,237 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 14:12:59,237 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-30 14:12:59,237 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:12:59,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1749226440, now seen corresponding path program 1 times [2023-08-30 14:12:59,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:12:59,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200564617] [2023-08-30 14:12:59,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:12:59,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:12:59,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:12:59,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:12:59,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:12:59,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200564617] [2023-08-30 14:12:59,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200564617] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:12:59,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:12:59,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:12:59,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105679716] [2023-08-30 14:12:59,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:12:59,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:12:59,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:12:59,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:12:59,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:12:59,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 572 [2023-08-30 14:12:59,291 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 164 transitions, 358 flow. Second operand has 3 states, 3 states have (on average 277.3333333333333) internal successors, (832), 3 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:12:59,292 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:12:59,292 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 572 [2023-08-30 14:12:59,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:14:39,602 INFO L130 PetriNetUnfolder]: 1159778/1582623 cut-off events. [2023-08-30 14:14:39,609 INFO L131 PetriNetUnfolder]: For 11101/11101 co-relation queries the response was YES. [2023-08-30 14:14:42,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3153934 conditions, 1582623 events. 1159778/1582623 cut-off events. For 11101/11101 co-relation queries the response was YES. Maximal size of possible extension queue 34086. Compared 13356572 event pairs, 733223 based on Foata normal form. 92839/1195608 useless extension candidates. Maximal degree in co-relation 77910. Up to 1564235 conditions per place. [2023-08-30 14:14:50,163 INFO L137 encePairwiseOnDemand]: 529/572 looper letters, 144 selfloop transitions, 2 changer transitions 0/159 dead transitions. [2023-08-30 14:14:50,164 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 159 transitions, 640 flow [2023-08-30 14:14:50,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:14:50,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:14:50,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1027 transitions. [2023-08-30 14:14:50,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5984848484848485 [2023-08-30 14:14:50,169 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1027 transitions. [2023-08-30 14:14:50,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1027 transitions. [2023-08-30 14:14:50,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:14:50,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1027 transitions. [2023-08-30 14:14:50,172 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 342.3333333333333) internal successors, (1027), 3 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:50,175 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 572.0) internal successors, (2288), 4 states have internal predecessors, (2288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:50,176 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 572.0) internal successors, (2288), 4 states have internal predecessors, (2288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:50,176 INFO L175 Difference]: Start difference. First operand has 127 places, 164 transitions, 358 flow. Second operand 3 states and 1027 transitions. [2023-08-30 14:14:50,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 159 transitions, 640 flow [2023-08-30 14:14:50,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 159 transitions, 640 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:14:50,188 INFO L231 Difference]: Finished difference. Result has 130 places, 127 transitions, 298 flow [2023-08-30 14:14:50,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=572, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=298, PETRI_PLACES=130, PETRI_TRANSITIONS=127} [2023-08-30 14:14:50,189 INFO L281 CegarLoopForPetriNet]: 127 programPoint places, 3 predicate places. [2023-08-30 14:14:50,189 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 127 transitions, 298 flow [2023-08-30 14:14:50,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 277.3333333333333) internal successors, (832), 3 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:50,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:14:50,190 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:14:50,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 14:14:50,191 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-30 14:14:50,191 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:14:50,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1072794735, now seen corresponding path program 1 times [2023-08-30 14:14:50,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:14:50,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922553751] [2023-08-30 14:14:50,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:14:50,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:14:50,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:14:50,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:14:50,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:14:50,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922553751] [2023-08-30 14:14:50,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922553751] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:14:50,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:14:50,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:14:50,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59966795] [2023-08-30 14:14:50,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:14:50,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:14:50,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:14:50,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:14:50,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:14:50,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 572 [2023-08-30 14:14:50,254 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 127 transitions, 298 flow. Second operand has 3 states, 3 states have (on average 269.6666666666667) internal successors, (809), 3 states have internal predecessors, (809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:14:50,255 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:14:50,255 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 572 [2023-08-30 14:14:50,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand