./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/pthread/stack-1.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread/stack-1.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 a5e93db72222dd521789305cbf7823ac91f269c62c97020d54f95f5ba14d3fd2 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 08:11:32,887 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 08:11:32,890 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 08:11:32,929 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 08:11:32,931 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 08:11:32,934 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 08:11:32,937 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 08:11:32,940 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 08:11:32,943 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 08:11:32,947 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 08:11:32,949 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 08:11:32,954 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 08:11:32,955 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 08:11:32,957 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 08:11:32,959 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 08:11:32,960 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 08:11:32,961 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 08:11:32,963 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 08:11:32,966 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 08:11:32,972 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 08:11:32,973 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 08:11:32,974 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 08:11:32,975 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 08:11:32,976 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 08:11:32,983 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 08:11:32,983 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 08:11:32,984 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 08:11:32,986 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 08:11:32,986 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 08:11:32,987 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 08:11:32,987 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 08:11:32,994 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 08:11:32,996 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 08:11:32,997 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 08:11:32,998 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 08:11:32,998 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 08:11:32,999 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 08:11:32,999 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 08:11:32,999 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 08:11:33,012 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 08:11:33,014 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 08:11:33,015 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 08:11:33,049 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 08:11:33,049 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 08:11:33,050 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 08:11:33,051 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 08:11:33,052 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 08:11:33,052 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 08:11:33,052 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 08:11:33,053 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 08:11:33,053 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 08:11:33,053 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 08:11:33,054 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 08:11:33,054 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 08:11:33,054 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 08:11:33,055 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 08:11:33,055 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 08:11:33,055 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 08:11:33,055 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 08:11:33,055 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 08:11:33,056 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 08:11:33,056 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 08:11:33,056 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 08:11:33,056 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 08:11:33,056 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 08:11:33,057 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 08:11:33,057 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 08:11:33,057 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 08:11:33,057 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 08:11:33,058 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 08:11:33,058 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 08:11:33,058 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 08:11:33,058 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 08:11:33,058 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 08:11:33,059 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 08:11:33,059 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 08:11:33,059 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 08:11:33,060 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 08:11:33,060 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 08:11:33,060 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a5e93db72222dd521789305cbf7823ac91f269c62c97020d54f95f5ba14d3fd2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 08:11:33,426 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 08:11:33,448 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 08:11:33,451 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 08:11:33,452 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 08:11:33,452 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 08:11:33,453 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack-1.i [2023-08-30 08:11:34,665 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 08:11:34,949 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 08:11:34,957 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack-1.i [2023-08-30 08:11:34,979 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc83ab38d/7afea8a9fbe14579902c4abcb0b301e4/FLAGe153c899c [2023-08-30 08:11:34,993 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc83ab38d/7afea8a9fbe14579902c4abcb0b301e4 [2023-08-30 08:11:34,995 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 08:11:34,996 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 08:11:34,997 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 08:11:35,000 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 08:11:35,003 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 08:11:35,004 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 08:11:34" (1/1) ... [2023-08-30 08:11:35,005 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29f19a63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:11:35, skipping insertion in model container [2023-08-30 08:11:35,005 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 08:11:34" (1/1) ... [2023-08-30 08:11:35,011 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 08:11:35,057 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 08:11:35,533 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack-1.i[41520,41533] [2023-08-30 08:11:35,570 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 08:11:35,583 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 08:11:35,668 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack-1.i[41520,41533] [2023-08-30 08:11:35,705 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 08:11:35,772 INFO L208 MainTranslator]: Completed translation [2023-08-30 08:11:35,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:11:35 WrapperNode [2023-08-30 08:11:35,773 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 08:11:35,774 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 08:11:35,775 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 08:11:35,775 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 08:11:35,782 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:11:35" (1/1) ... [2023-08-30 08:11:35,813 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:11:35" (1/1) ... [2023-08-30 08:11:35,835 INFO L138 Inliner]: procedures = 277, calls = 43, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 161 [2023-08-30 08:11:35,835 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 08:11:35,836 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 08:11:35,836 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 08:11:35,836 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 08:11:35,844 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:11:35" (1/1) ... [2023-08-30 08:11:35,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:11:35" (1/1) ... [2023-08-30 08:11:35,847 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:11:35" (1/1) ... [2023-08-30 08:11:35,849 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:11:35" (1/1) ... [2023-08-30 08:11:35,856 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:11:35" (1/1) ... [2023-08-30 08:11:35,860 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:11:35" (1/1) ... [2023-08-30 08:11:35,862 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:11:35" (1/1) ... [2023-08-30 08:11:35,863 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:11:35" (1/1) ... [2023-08-30 08:11:35,866 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 08:11:35,867 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 08:11:35,867 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 08:11:35,867 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 08:11:35,868 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:11:35" (1/1) ... [2023-08-30 08:11:35,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 08:11:35,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:11:35,910 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 08:11:35,939 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 08:11:35,959 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-08-30 08:11:35,959 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-08-30 08:11:35,959 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-08-30 08:11:35,961 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-08-30 08:11:35,961 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 08:11:35,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 08:11:35,961 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 08:11:35,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 08:11:35,962 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 08:11:35,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 08:11:35,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 08:11:35,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 08:11:35,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 08:11:35,964 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 08:11:36,136 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 08:11:36,145 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 08:11:36,419 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 08:11:36,427 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 08:11:36,439 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-30 08:11:36,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 08:11:36 BoogieIcfgContainer [2023-08-30 08:11:36,442 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 08:11:36,444 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 08:11:36,444 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 08:11:36,447 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 08:11:36,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 08:11:34" (1/3) ... [2023-08-30 08:11:36,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57d22aaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 08:11:36, skipping insertion in model container [2023-08-30 08:11:36,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:11:35" (2/3) ... [2023-08-30 08:11:36,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57d22aaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 08:11:36, skipping insertion in model container [2023-08-30 08:11:36,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 08:11:36" (3/3) ... [2023-08-30 08:11:36,459 INFO L112 eAbstractionObserver]: Analyzing ICFG stack-1.i [2023-08-30 08:11:36,466 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 08:11:36,475 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 08:11:36,476 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-30 08:11:36,476 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 08:11:36,597 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 08:11:36,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 169 transitions, 354 flow [2023-08-30 08:11:36,715 INFO L130 PetriNetUnfolder]: 10/167 cut-off events. [2023-08-30 08:11:36,716 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 08:11:36,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 167 events. 10/167 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 426 event pairs, 0 based on Foata normal form. 0/149 useless extension candidates. Maximal degree in co-relation 125. Up to 3 conditions per place. [2023-08-30 08:11:36,725 INFO L82 GeneralOperation]: Start removeDead. Operand has 166 places, 169 transitions, 354 flow [2023-08-30 08:11:36,734 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 155 places, 158 transitions, 325 flow [2023-08-30 08:11:36,738 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 08:11:36,752 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 155 places, 158 transitions, 325 flow [2023-08-30 08:11:36,759 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 155 places, 158 transitions, 325 flow [2023-08-30 08:11:36,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 155 places, 158 transitions, 325 flow [2023-08-30 08:11:36,793 INFO L130 PetriNetUnfolder]: 10/158 cut-off events. [2023-08-30 08:11:36,794 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 08:11:36,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 158 events. 10/158 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 363 event pairs, 0 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 125. Up to 3 conditions per place. [2023-08-30 08:11:36,813 INFO L119 LiptonReduction]: Number of co-enabled transitions 8200 [2023-08-30 08:11:40,917 INFO L134 LiptonReduction]: Checked pairs total: 11973 [2023-08-30 08:11:40,917 INFO L136 LiptonReduction]: Total number of compositions: 145 [2023-08-30 08:11:40,931 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 08:11:40,937 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;@5e608e9c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 08:11:40,937 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-08-30 08:11:40,942 INFO L130 PetriNetUnfolder]: 1/17 cut-off events. [2023-08-30 08:11:40,943 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 08:11:40,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:11:40,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:11:40,944 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:11:40,948 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:11:40,949 INFO L85 PathProgramCache]: Analyzing trace with hash 844935299, now seen corresponding path program 1 times [2023-08-30 08:11:40,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:11:40,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379361829] [2023-08-30 08:11:40,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:11:40,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:11:41,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:11:41,236 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 08:11:41,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:11:41,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379361829] [2023-08-30 08:11:41,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379361829] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:11:41,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:11:41,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:11:41,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237791744] [2023-08-30 08:11:41,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:11:41,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:11:41,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:11:41,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:11:41,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:11:41,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 314 [2023-08-30 08:11:41,311 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 40 transitions, 89 flow. Second operand has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:41,312 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:11:41,312 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 314 [2023-08-30 08:11:41,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:11:41,611 INFO L130 PetriNetUnfolder]: 1174/1921 cut-off events. [2023-08-30 08:11:41,612 INFO L131 PetriNetUnfolder]: For 71/71 co-relation queries the response was YES. [2023-08-30 08:11:41,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3888 conditions, 1921 events. 1174/1921 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 8664 event pairs, 456 based on Foata normal form. 0/1314 useless extension candidates. Maximal degree in co-relation 3632. Up to 1295 conditions per place. [2023-08-30 08:11:41,625 INFO L137 encePairwiseOnDemand]: 307/314 looper letters, 60 selfloop transitions, 3 changer transitions 0/64 dead transitions. [2023-08-30 08:11:41,626 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 64 transitions, 269 flow [2023-08-30 08:11:41,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:11:41,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:11:41,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 520 transitions. [2023-08-30 08:11:41,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5520169851380042 [2023-08-30 08:11:41,647 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 520 transitions. [2023-08-30 08:11:41,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 520 transitions. [2023-08-30 08:11:41,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:11:41,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 520 transitions. [2023-08-30 08:11:41,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:41,665 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:41,666 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:41,667 INFO L175 Difference]: Start difference. First operand has 42 places, 40 transitions, 89 flow. Second operand 3 states and 520 transitions. [2023-08-30 08:11:41,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 64 transitions, 269 flow [2023-08-30 08:11:41,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 64 transitions, 261 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 08:11:41,675 INFO L231 Difference]: Finished difference. Result has 42 places, 41 transitions, 105 flow [2023-08-30 08:11:41,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=105, PETRI_PLACES=42, PETRI_TRANSITIONS=41} [2023-08-30 08:11:41,680 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 0 predicate places. [2023-08-30 08:11:41,681 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 41 transitions, 105 flow [2023-08-30 08:11:41,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:41,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:11:41,683 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:11:41,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 08:11:41,684 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:11:41,694 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:11:41,695 INFO L85 PathProgramCache]: Analyzing trace with hash -160824553, now seen corresponding path program 1 times [2023-08-30 08:11:41,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:11:41,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12247426] [2023-08-30 08:11:41,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:11:41,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:11:41,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:11:41,842 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 08:11:41,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:11:41,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12247426] [2023-08-30 08:11:41,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12247426] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:11:41,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:11:41,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:11:41,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559975675] [2023-08-30 08:11:41,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:11:41,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:11:41,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:11:41,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:11:41,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:11:41,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 314 [2023-08-30 08:11:41,857 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 41 transitions, 105 flow. Second operand has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:41,857 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:11:41,857 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 314 [2023-08-30 08:11:41,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:11:42,174 INFO L130 PetriNetUnfolder]: 1731/2926 cut-off events. [2023-08-30 08:11:42,174 INFO L131 PetriNetUnfolder]: For 188/188 co-relation queries the response was YES. [2023-08-30 08:11:42,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6180 conditions, 2926 events. 1731/2926 cut-off events. For 188/188 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 15020 event pairs, 883 based on Foata normal form. 0/2350 useless extension candidates. Maximal degree in co-relation 5548. Up to 1779 conditions per place. [2023-08-30 08:11:42,190 INFO L137 encePairwiseOnDemand]: 309/314 looper letters, 70 selfloop transitions, 2 changer transitions 0/73 dead transitions. [2023-08-30 08:11:42,191 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 73 transitions, 330 flow [2023-08-30 08:11:42,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:11:42,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:11:42,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 535 transitions. [2023-08-30 08:11:42,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5679405520169851 [2023-08-30 08:11:42,193 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 535 transitions. [2023-08-30 08:11:42,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 535 transitions. [2023-08-30 08:11:42,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:11:42,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 535 transitions. [2023-08-30 08:11:42,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 178.33333333333334) internal successors, (535), 3 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:42,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:42,198 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:42,198 INFO L175 Difference]: Start difference. First operand has 42 places, 41 transitions, 105 flow. Second operand 3 states and 535 transitions. [2023-08-30 08:11:42,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 73 transitions, 330 flow [2023-08-30 08:11:42,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 73 transitions, 325 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:11:42,201 INFO L231 Difference]: Finished difference. Result has 44 places, 42 transitions, 118 flow [2023-08-30 08:11:42,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=44, PETRI_TRANSITIONS=42} [2023-08-30 08:11:42,202 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 2 predicate places. [2023-08-30 08:11:42,202 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 42 transitions, 118 flow [2023-08-30 08:11:42,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:42,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:11:42,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:11:42,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 08:11:42,204 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:11:42,204 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:11:42,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1061347061, now seen corresponding path program 1 times [2023-08-30 08:11:42,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:11:42,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664816074] [2023-08-30 08:11:42,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:11:42,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:11:42,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:11:42,297 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 08:11:42,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:11:42,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664816074] [2023-08-30 08:11:42,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664816074] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:11:42,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:11:42,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:11:42,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919638572] [2023-08-30 08:11:42,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:11:42,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:11:42,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:11:42,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:11:42,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:11:42,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 314 [2023-08-30 08:11:42,309 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 42 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:42,309 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:11:42,310 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 314 [2023-08-30 08:11:42,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:11:42,649 INFO L130 PetriNetUnfolder]: 2246/3651 cut-off events. [2023-08-30 08:11:42,649 INFO L131 PetriNetUnfolder]: For 447/447 co-relation queries the response was YES. [2023-08-30 08:11:42,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8435 conditions, 3651 events. 2246/3651 cut-off events. For 447/447 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 20134 event pairs, 1026 based on Foata normal form. 0/2997 useless extension candidates. Maximal degree in co-relation 6322. Up to 2950 conditions per place. [2023-08-30 08:11:42,670 INFO L137 encePairwiseOnDemand]: 309/314 looper letters, 68 selfloop transitions, 2 changer transitions 0/71 dead transitions. [2023-08-30 08:11:42,670 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 71 transitions, 338 flow [2023-08-30 08:11:42,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:11:42,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:11:42,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 532 transitions. [2023-08-30 08:11:42,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.564755838641189 [2023-08-30 08:11:42,673 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 532 transitions. [2023-08-30 08:11:42,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 532 transitions. [2023-08-30 08:11:42,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:11:42,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 532 transitions. [2023-08-30 08:11:42,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 177.33333333333334) internal successors, (532), 3 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:42,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:42,678 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:42,678 INFO L175 Difference]: Start difference. First operand has 44 places, 42 transitions, 118 flow. Second operand 3 states and 532 transitions. [2023-08-30 08:11:42,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 71 transitions, 338 flow [2023-08-30 08:11:42,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 71 transitions, 334 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:11:42,681 INFO L231 Difference]: Finished difference. Result has 46 places, 43 transitions, 132 flow [2023-08-30 08:11:42,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=46, PETRI_TRANSITIONS=43} [2023-08-30 08:11:42,683 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2023-08-30 08:11:42,683 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 43 transitions, 132 flow [2023-08-30 08:11:42,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:42,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:11:42,684 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:11:42,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 08:11:42,685 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:11:42,685 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:11:42,685 INFO L85 PathProgramCache]: Analyzing trace with hash -508596047, now seen corresponding path program 1 times [2023-08-30 08:11:42,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:11:42,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001308607] [2023-08-30 08:11:42,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:11:42,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:11:42,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:11:42,755 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 08:11:42,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:11:42,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001308607] [2023-08-30 08:11:42,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001308607] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:11:42,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:11:42,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:11:42,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705047192] [2023-08-30 08:11:42,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:11:42,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:11:42,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:11:42,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:11:42,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:11:42,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 314 [2023-08-30 08:11:42,768 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 43 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:42,768 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:11:42,769 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 314 [2023-08-30 08:11:42,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:11:43,088 INFO L130 PetriNetUnfolder]: 1976/3327 cut-off events. [2023-08-30 08:11:43,089 INFO L131 PetriNetUnfolder]: For 582/582 co-relation queries the response was YES. [2023-08-30 08:11:43,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7754 conditions, 3327 events. 1976/3327 cut-off events. For 582/582 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 18153 event pairs, 95 based on Foata normal form. 0/2929 useless extension candidates. Maximal degree in co-relation 7268. Up to 3041 conditions per place. [2023-08-30 08:11:43,109 INFO L137 encePairwiseOnDemand]: 312/314 looper letters, 60 selfloop transitions, 1 changer transitions 0/62 dead transitions. [2023-08-30 08:11:43,109 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 62 transitions, 315 flow [2023-08-30 08:11:43,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:11:43,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:11:43,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 519 transitions. [2023-08-30 08:11:43,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5509554140127388 [2023-08-30 08:11:43,112 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 519 transitions. [2023-08-30 08:11:43,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 519 transitions. [2023-08-30 08:11:43,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:11:43,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 519 transitions. [2023-08-30 08:11:43,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:43,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:43,116 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:43,117 INFO L175 Difference]: Start difference. First operand has 46 places, 43 transitions, 132 flow. Second operand 3 states and 519 transitions. [2023-08-30 08:11:43,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 62 transitions, 315 flow [2023-08-30 08:11:43,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 62 transitions, 311 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:11:43,119 INFO L231 Difference]: Finished difference. Result has 46 places, 42 transitions, 128 flow [2023-08-30 08:11:43,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=46, PETRI_TRANSITIONS=42} [2023-08-30 08:11:43,120 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2023-08-30 08:11:43,120 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 42 transitions, 128 flow [2023-08-30 08:11:43,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:43,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:11:43,121 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:11:43,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 08:11:43,121 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:11:43,122 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:11:43,122 INFO L85 PathProgramCache]: Analyzing trace with hash -508596003, now seen corresponding path program 1 times [2023-08-30 08:11:43,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:11:43,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267212584] [2023-08-30 08:11:43,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:11:43,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:11:43,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:11:43,159 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 08:11:43,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:11:43,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267212584] [2023-08-30 08:11:43,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267212584] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:11:43,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:11:43,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:11:43,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481671334] [2023-08-30 08:11:43,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:11:43,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:11:43,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:11:43,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:11:43,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:11:43,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 314 [2023-08-30 08:11:43,169 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 42 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:43,169 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:11:43,169 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 314 [2023-08-30 08:11:43,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:11:43,488 INFO L130 PetriNetUnfolder]: 1863/3136 cut-off events. [2023-08-30 08:11:43,488 INFO L131 PetriNetUnfolder]: For 629/629 co-relation queries the response was YES. [2023-08-30 08:11:43,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7236 conditions, 3136 events. 1863/3136 cut-off events. For 629/629 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 16925 event pairs, 305 based on Foata normal form. 0/2826 useless extension candidates. Maximal degree in co-relation 6868. Up to 2390 conditions per place. [2023-08-30 08:11:43,504 INFO L137 encePairwiseOnDemand]: 310/314 looper letters, 57 selfloop transitions, 4 changer transitions 0/62 dead transitions. [2023-08-30 08:11:43,504 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 62 transitions, 311 flow [2023-08-30 08:11:43,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:11:43,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:11:43,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 516 transitions. [2023-08-30 08:11:43,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5477707006369427 [2023-08-30 08:11:43,506 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 516 transitions. [2023-08-30 08:11:43,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 516 transitions. [2023-08-30 08:11:43,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:11:43,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 516 transitions. [2023-08-30 08:11:43,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:43,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:43,511 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:43,511 INFO L175 Difference]: Start difference. First operand has 46 places, 42 transitions, 128 flow. Second operand 3 states and 516 transitions. [2023-08-30 08:11:43,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 62 transitions, 311 flow [2023-08-30 08:11:43,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 62 transitions, 310 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:11:43,515 INFO L231 Difference]: Finished difference. Result has 47 places, 42 transitions, 139 flow [2023-08-30 08:11:43,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=139, PETRI_PLACES=47, PETRI_TRANSITIONS=42} [2023-08-30 08:11:43,517 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 5 predicate places. [2023-08-30 08:11:43,517 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 42 transitions, 139 flow [2023-08-30 08:11:43,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:43,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:11:43,518 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:11:43,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 08:11:43,518 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:11:43,519 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:11:43,519 INFO L85 PathProgramCache]: Analyzing trace with hash 368720070, now seen corresponding path program 1 times [2023-08-30 08:11:43,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:11:43,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970212786] [2023-08-30 08:11:43,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:11:43,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:11:43,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:11:43,627 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:11:43,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:11:43,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970212786] [2023-08-30 08:11:43,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970212786] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:11:43,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316659730] [2023-08-30 08:11:43,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:11:43,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:11:43,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:11:43,641 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 08:11:43,667 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 08:11:43,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:11:43,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 08:11:43,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:11:43,849 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:11:43,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:11:43,909 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:11:43,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316659730] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:11:43,910 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:11:43,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-08-30 08:11:43,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992056332] [2023-08-30 08:11:43,910 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:11:43,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 08:11:43,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:11:43,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 08:11:43,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-08-30 08:11:44,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 314 [2023-08-30 08:11:44,004 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 42 transitions, 139 flow. Second operand has 10 states, 10 states have (on average 148.7) internal successors, (1487), 10 states have internal predecessors, (1487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:44,004 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:11:44,004 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 314 [2023-08-30 08:11:44,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:11:44,935 INFO L130 PetriNetUnfolder]: 4164/6893 cut-off events. [2023-08-30 08:11:44,936 INFO L131 PetriNetUnfolder]: For 3791/3791 co-relation queries the response was YES. [2023-08-30 08:11:44,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17358 conditions, 6893 events. 4164/6893 cut-off events. For 3791/3791 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 39128 event pairs, 675 based on Foata normal form. 146/6435 useless extension candidates. Maximal degree in co-relation 16770. Up to 2039 conditions per place. [2023-08-30 08:11:44,978 INFO L137 encePairwiseOnDemand]: 302/314 looper letters, 212 selfloop transitions, 40 changer transitions 2/255 dead transitions. [2023-08-30 08:11:44,978 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 255 transitions, 1399 flow [2023-08-30 08:11:44,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 08:11:44,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 08:11:44,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2273 transitions. [2023-08-30 08:11:44,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5170609645131938 [2023-08-30 08:11:44,985 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2273 transitions. [2023-08-30 08:11:44,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2273 transitions. [2023-08-30 08:11:44,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:11:44,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2273 transitions. [2023-08-30 08:11:44,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 162.35714285714286) internal successors, (2273), 14 states have internal predecessors, (2273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:44,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 314.0) internal successors, (4710), 15 states have internal predecessors, (4710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:45,000 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 314.0) internal successors, (4710), 15 states have internal predecessors, (4710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:45,001 INFO L175 Difference]: Start difference. First operand has 47 places, 42 transitions, 139 flow. Second operand 14 states and 2273 transitions. [2023-08-30 08:11:45,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 255 transitions, 1399 flow [2023-08-30 08:11:45,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 255 transitions, 1353 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:11:45,023 INFO L231 Difference]: Finished difference. Result has 68 places, 81 transitions, 446 flow [2023-08-30 08:11:45,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=446, PETRI_PLACES=68, PETRI_TRANSITIONS=81} [2023-08-30 08:11:45,026 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 26 predicate places. [2023-08-30 08:11:45,026 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 81 transitions, 446 flow [2023-08-30 08:11:45,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 148.7) internal successors, (1487), 10 states have internal predecessors, (1487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:45,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:11:45,029 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:11:45,041 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 08:11:45,235 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 08:11:45,236 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:11:45,236 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:11:45,236 INFO L85 PathProgramCache]: Analyzing trace with hash 526856183, now seen corresponding path program 1 times [2023-08-30 08:11:45,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:11:45,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868517979] [2023-08-30 08:11:45,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:11:45,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:11:45,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:11:45,351 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 08:11:45,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:11:45,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868517979] [2023-08-30 08:11:45,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868517979] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:11:45,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:11:45,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 08:11:45,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397579886] [2023-08-30 08:11:45,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:11:45,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:11:45,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:11:45,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:11:45,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:11:45,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 314 [2023-08-30 08:11:45,370 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 81 transitions, 446 flow. Second operand has 3 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:45,370 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:11:45,370 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 314 [2023-08-30 08:11:45,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:11:45,798 INFO L130 PetriNetUnfolder]: 1972/3341 cut-off events. [2023-08-30 08:11:45,799 INFO L131 PetriNetUnfolder]: For 3438/3438 co-relation queries the response was YES. [2023-08-30 08:11:45,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10267 conditions, 3341 events. 1972/3341 cut-off events. For 3438/3438 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 17524 event pairs, 419 based on Foata normal form. 212/3301 useless extension candidates. Maximal degree in co-relation 9582. Up to 2429 conditions per place. [2023-08-30 08:11:45,816 INFO L137 encePairwiseOnDemand]: 309/314 looper letters, 70 selfloop transitions, 6 changer transitions 0/76 dead transitions. [2023-08-30 08:11:45,816 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 76 transitions, 532 flow [2023-08-30 08:11:45,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:11:45,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:11:45,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 509 transitions. [2023-08-30 08:11:45,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5403397027600849 [2023-08-30 08:11:45,818 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 509 transitions. [2023-08-30 08:11:45,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 509 transitions. [2023-08-30 08:11:45,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:11:45,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 509 transitions. [2023-08-30 08:11:45,820 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 169.66666666666666) internal successors, (509), 3 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:45,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:45,822 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:45,822 INFO L175 Difference]: Start difference. First operand has 68 places, 81 transitions, 446 flow. Second operand 3 states and 509 transitions. [2023-08-30 08:11:45,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 76 transitions, 532 flow [2023-08-30 08:11:45,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 76 transitions, 499 flow, removed 10 selfloop flow, removed 6 redundant places. [2023-08-30 08:11:45,838 INFO L231 Difference]: Finished difference. Result has 59 places, 61 transitions, 299 flow [2023-08-30 08:11:45,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=299, PETRI_PLACES=59, PETRI_TRANSITIONS=61} [2023-08-30 08:11:45,839 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 17 predicate places. [2023-08-30 08:11:45,839 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 61 transitions, 299 flow [2023-08-30 08:11:45,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:45,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:11:45,840 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:11:45,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 08:11:45,840 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:11:45,841 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:11:45,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1455462650, now seen corresponding path program 1 times [2023-08-30 08:11:45,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:11:45,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731520055] [2023-08-30 08:11:45,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:11:45,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:11:45,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:11:45,928 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:11:45,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:11:45,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731520055] [2023-08-30 08:11:45,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731520055] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:11:45,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010021216] [2023-08-30 08:11:45,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:11:45,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:11:45,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:11:45,931 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:11:45,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 08:11:46,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:11:46,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 08:11:46,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:11:46,071 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:11:46,072 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 08:11:46,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2010021216] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:11:46,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 08:11:46,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-30 08:11:46,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3429616] [2023-08-30 08:11:46,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:11:46,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 08:11:46,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:11:46,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 08:11:46,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 08:11:46,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 314 [2023-08-30 08:11:46,111 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 61 transitions, 299 flow. Second operand has 5 states, 5 states have (on average 148.2) internal successors, (741), 5 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:46,111 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:11:46,111 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 314 [2023-08-30 08:11:46,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:11:46,458 INFO L130 PetriNetUnfolder]: 1801/3184 cut-off events. [2023-08-30 08:11:46,458 INFO L131 PetriNetUnfolder]: For 3023/3023 co-relation queries the response was YES. [2023-08-30 08:11:46,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9512 conditions, 3184 events. 1801/3184 cut-off events. For 3023/3023 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 15682 event pairs, 527 based on Foata normal form. 250/3196 useless extension candidates. Maximal degree in co-relation 8882. Up to 1653 conditions per place. [2023-08-30 08:11:46,478 INFO L137 encePairwiseOnDemand]: 303/314 looper letters, 92 selfloop transitions, 16 changer transitions 0/109 dead transitions. [2023-08-30 08:11:46,478 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 109 transitions, 723 flow [2023-08-30 08:11:46,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 08:11:46,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 08:11:46,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 955 transitions. [2023-08-30 08:11:46,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5069002123142251 [2023-08-30 08:11:46,481 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 955 transitions. [2023-08-30 08:11:46,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 955 transitions. [2023-08-30 08:11:46,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:11:46,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 955 transitions. [2023-08-30 08:11:46,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 159.16666666666666) internal successors, (955), 6 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:46,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 314.0) internal successors, (2198), 7 states have internal predecessors, (2198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:46,488 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 314.0) internal successors, (2198), 7 states have internal predecessors, (2198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:46,488 INFO L175 Difference]: Start difference. First operand has 59 places, 61 transitions, 299 flow. Second operand 6 states and 955 transitions. [2023-08-30 08:11:46,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 109 transitions, 723 flow [2023-08-30 08:11:46,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 109 transitions, 711 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:11:46,495 INFO L231 Difference]: Finished difference. Result has 65 places, 64 transitions, 403 flow [2023-08-30 08:11:46,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=403, PETRI_PLACES=65, PETRI_TRANSITIONS=64} [2023-08-30 08:11:46,496 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 23 predicate places. [2023-08-30 08:11:46,496 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 64 transitions, 403 flow [2023-08-30 08:11:46,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 148.2) internal successors, (741), 5 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:46,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:11:46,497 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-08-30 08:11:46,505 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 08:11:46,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-08-30 08:11:46,703 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:11:46,704 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:11:46,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1992356996, now seen corresponding path program 1 times [2023-08-30 08:11:46,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:11:46,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941636414] [2023-08-30 08:11:46,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:11:46,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:11:46,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:11:46,761 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 08:11:46,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:11:46,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941636414] [2023-08-30 08:11:46,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941636414] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:11:46,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:11:46,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:11:46,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796868544] [2023-08-30 08:11:46,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:11:46,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:11:46,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:11:46,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:11:46,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:11:46,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 314 [2023-08-30 08:11:46,772 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 64 transitions, 403 flow. Second operand has 3 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:46,772 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:11:46,772 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 314 [2023-08-30 08:11:46,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:11:47,070 INFO L130 PetriNetUnfolder]: 1623/2884 cut-off events. [2023-08-30 08:11:47,070 INFO L131 PetriNetUnfolder]: For 3610/3614 co-relation queries the response was YES. [2023-08-30 08:11:47,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9047 conditions, 2884 events. 1623/2884 cut-off events. For 3610/3614 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 14119 event pairs, 471 based on Foata normal form. 4/2766 useless extension candidates. Maximal degree in co-relation 5244. Up to 1816 conditions per place. [2023-08-30 08:11:47,088 INFO L137 encePairwiseOnDemand]: 310/314 looper letters, 83 selfloop transitions, 4 changer transitions 0/88 dead transitions. [2023-08-30 08:11:47,088 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 88 transitions, 712 flow [2023-08-30 08:11:47,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:11:47,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:11:47,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 511 transitions. [2023-08-30 08:11:47,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5424628450106157 [2023-08-30 08:11:47,090 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 511 transitions. [2023-08-30 08:11:47,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 511 transitions. [2023-08-30 08:11:47,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:11:47,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 511 transitions. [2023-08-30 08:11:47,092 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 170.33333333333334) internal successors, (511), 3 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:47,094 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:47,094 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:47,094 INFO L175 Difference]: Start difference. First operand has 65 places, 64 transitions, 403 flow. Second operand 3 states and 511 transitions. [2023-08-30 08:11:47,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 88 transitions, 712 flow [2023-08-30 08:11:47,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 88 transitions, 704 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-30 08:11:47,104 INFO L231 Difference]: Finished difference. Result has 65 places, 64 transitions, 408 flow [2023-08-30 08:11:47,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=408, PETRI_PLACES=65, PETRI_TRANSITIONS=64} [2023-08-30 08:11:47,106 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 23 predicate places. [2023-08-30 08:11:47,106 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 64 transitions, 408 flow [2023-08-30 08:11:47,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:47,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:11:47,107 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-08-30 08:11:47,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 08:11:47,107 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:11:47,107 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:11:47,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1992357056, now seen corresponding path program 1 times [2023-08-30 08:11:47,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:11:47,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893485406] [2023-08-30 08:11:47,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:11:47,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:11:47,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:11:47,163 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:11:47,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:11:47,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893485406] [2023-08-30 08:11:47,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893485406] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:11:47,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:11:47,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:11:47,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420807932] [2023-08-30 08:11:47,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:11:47,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:11:47,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:11:47,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:11:47,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:11:47,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 314 [2023-08-30 08:11:47,172 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 64 transitions, 408 flow. Second operand has 3 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:47,173 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:11:47,173 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 314 [2023-08-30 08:11:47,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:11:47,440 INFO L130 PetriNetUnfolder]: 1445/2588 cut-off events. [2023-08-30 08:11:47,441 INFO L131 PetriNetUnfolder]: For 4313/4325 co-relation queries the response was YES. [2023-08-30 08:11:47,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8467 conditions, 2588 events. 1445/2588 cut-off events. For 4313/4325 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 12539 event pairs, 437 based on Foata normal form. 128/2710 useless extension candidates. Maximal degree in co-relation 7976. Up to 2546 conditions per place. [2023-08-30 08:11:47,453 INFO L137 encePairwiseOnDemand]: 312/314 looper letters, 71 selfloop transitions, 1 changer transitions 0/73 dead transitions. [2023-08-30 08:11:47,454 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 73 transitions, 597 flow [2023-08-30 08:11:47,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:11:47,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:11:47,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 504 transitions. [2023-08-30 08:11:47,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.535031847133758 [2023-08-30 08:11:47,456 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 504 transitions. [2023-08-30 08:11:47,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 504 transitions. [2023-08-30 08:11:47,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:11:47,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 504 transitions. [2023-08-30 08:11:47,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:47,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:47,460 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:47,460 INFO L175 Difference]: Start difference. First operand has 65 places, 64 transitions, 408 flow. Second operand 3 states and 504 transitions. [2023-08-30 08:11:47,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 73 transitions, 597 flow [2023-08-30 08:11:47,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 73 transitions, 593 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:11:47,467 INFO L231 Difference]: Finished difference. Result has 65 places, 63 transitions, 402 flow [2023-08-30 08:11:47,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=402, PETRI_PLACES=65, PETRI_TRANSITIONS=63} [2023-08-30 08:11:47,469 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 23 predicate places. [2023-08-30 08:11:47,469 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 63 transitions, 402 flow [2023-08-30 08:11:47,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:47,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:11:47,470 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:11:47,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 08:11:47,470 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:11:47,470 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:11:47,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1503408652, now seen corresponding path program 1 times [2023-08-30 08:11:47,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:11:47,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638629632] [2023-08-30 08:11:47,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:11:47,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:11:47,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:11:47,583 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 08:11:47,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:11:47,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638629632] [2023-08-30 08:11:47,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638629632] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:11:47,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:11:47,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 08:11:47,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860972417] [2023-08-30 08:11:47,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:11:47,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 08:11:47,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:11:47,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 08:11:47,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 08:11:47,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 314 [2023-08-30 08:11:47,657 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 63 transitions, 402 flow. Second operand has 7 states, 7 states have (on average 143.71428571428572) internal successors, (1006), 7 states have internal predecessors, (1006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:47,657 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:11:47,657 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 314 [2023-08-30 08:11:47,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:11:48,046 INFO L130 PetriNetUnfolder]: 1581/2844 cut-off events. [2023-08-30 08:11:48,046 INFO L131 PetriNetUnfolder]: For 4134/4134 co-relation queries the response was YES. [2023-08-30 08:11:48,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9126 conditions, 2844 events. 1581/2844 cut-off events. For 4134/4134 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 13561 event pairs, 395 based on Foata normal form. 24/2862 useless extension candidates. Maximal degree in co-relation 8918. Up to 1665 conditions per place. [2023-08-30 08:11:48,067 INFO L137 encePairwiseOnDemand]: 304/314 looper letters, 106 selfloop transitions, 14 changer transitions 9/130 dead transitions. [2023-08-30 08:11:48,068 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 130 transitions, 942 flow [2023-08-30 08:11:48,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 08:11:48,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 08:11:48,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1082 transitions. [2023-08-30 08:11:48,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49226569608735216 [2023-08-30 08:11:48,071 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1082 transitions. [2023-08-30 08:11:48,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1082 transitions. [2023-08-30 08:11:48,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:11:48,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1082 transitions. [2023-08-30 08:11:48,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 154.57142857142858) internal successors, (1082), 7 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:48,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 314.0) internal successors, (2512), 8 states have internal predecessors, (2512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:48,078 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 314.0) internal successors, (2512), 8 states have internal predecessors, (2512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:48,078 INFO L175 Difference]: Start difference. First operand has 65 places, 63 transitions, 402 flow. Second operand 7 states and 1082 transitions. [2023-08-30 08:11:48,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 130 transitions, 942 flow [2023-08-30 08:11:48,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 130 transitions, 941 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:11:48,087 INFO L231 Difference]: Finished difference. Result has 74 places, 68 transitions, 506 flow [2023-08-30 08:11:48,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=506, PETRI_PLACES=74, PETRI_TRANSITIONS=68} [2023-08-30 08:11:48,088 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 32 predicate places. [2023-08-30 08:11:48,088 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 68 transitions, 506 flow [2023-08-30 08:11:48,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 143.71428571428572) internal successors, (1006), 7 states have internal predecessors, (1006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:48,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:11:48,089 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:11:48,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 08:11:48,089 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:11:48,090 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:11:48,090 INFO L85 PathProgramCache]: Analyzing trace with hash 12520344, now seen corresponding path program 1 times [2023-08-30 08:11:48,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:11:48,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108833376] [2023-08-30 08:11:48,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:11:48,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:11:48,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:11:48,164 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:11:48,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:11:48,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108833376] [2023-08-30 08:11:48,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108833376] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:11:48,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:11:48,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 08:11:48,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543217842] [2023-08-30 08:11:48,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:11:48,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 08:11:48,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:11:48,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 08:11:48,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 08:11:48,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 314 [2023-08-30 08:11:48,200 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 68 transitions, 506 flow. Second operand has 5 states, 5 states have (on average 150.4) internal successors, (752), 5 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:48,200 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:11:48,200 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 314 [2023-08-30 08:11:48,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:11:48,759 INFO L130 PetriNetUnfolder]: 1991/3558 cut-off events. [2023-08-30 08:11:48,759 INFO L131 PetriNetUnfolder]: For 6442/6442 co-relation queries the response was YES. [2023-08-30 08:11:48,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11951 conditions, 3558 events. 1991/3558 cut-off events. For 6442/6442 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 18341 event pairs, 408 based on Foata normal form. 16/3568 useless extension candidates. Maximal degree in co-relation 11738. Up to 1703 conditions per place. [2023-08-30 08:11:48,789 INFO L137 encePairwiseOnDemand]: 305/314 looper letters, 101 selfloop transitions, 22 changer transitions 0/124 dead transitions. [2023-08-30 08:11:48,790 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 124 transitions, 1057 flow [2023-08-30 08:11:48,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 08:11:48,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 08:11:48,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 806 transitions. [2023-08-30 08:11:48,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.513375796178344 [2023-08-30 08:11:48,793 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 806 transitions. [2023-08-30 08:11:48,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 806 transitions. [2023-08-30 08:11:48,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:11:48,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 806 transitions. [2023-08-30 08:11:48,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 161.2) internal successors, (806), 5 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:48,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 314.0) internal successors, (1884), 6 states have internal predecessors, (1884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:48,799 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 314.0) internal successors, (1884), 6 states have internal predecessors, (1884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:48,799 INFO L175 Difference]: Start difference. First operand has 74 places, 68 transitions, 506 flow. Second operand 5 states and 806 transitions. [2023-08-30 08:11:48,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 124 transitions, 1057 flow [2023-08-30 08:11:48,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 124 transitions, 1049 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-30 08:11:48,812 INFO L231 Difference]: Finished difference. Result has 79 places, 76 transitions, 689 flow [2023-08-30 08:11:48,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=689, PETRI_PLACES=79, PETRI_TRANSITIONS=76} [2023-08-30 08:11:48,813 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 37 predicate places. [2023-08-30 08:11:48,813 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 76 transitions, 689 flow [2023-08-30 08:11:48,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 150.4) internal successors, (752), 5 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:48,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:11:48,814 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1] [2023-08-30 08:11:48,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 08:11:48,815 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:11:48,815 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:11:48,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1115528668, now seen corresponding path program 1 times [2023-08-30 08:11:48,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:11:48,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709749866] [2023-08-30 08:11:48,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:11:48,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:11:48,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:11:48,978 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:11:48,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:11:48,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709749866] [2023-08-30 08:11:48,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709749866] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:11:48,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899934271] [2023-08-30 08:11:48,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:11:48,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:11:48,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:11:48,981 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:11:49,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 08:11:49,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:11:49,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 08:11:49,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:11:49,181 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:11:49,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:11:49,286 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:11:49,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899934271] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:11:49,286 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:11:49,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-08-30 08:11:49,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072343401] [2023-08-30 08:11:49,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:11:49,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-30 08:11:49,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:11:49,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-30 08:11:49,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-08-30 08:11:49,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 314 [2023-08-30 08:11:49,418 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 76 transitions, 689 flow. Second operand has 18 states, 18 states have (on average 149.05555555555554) internal successors, (2683), 18 states have internal predecessors, (2683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:49,418 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:11:49,418 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 314 [2023-08-30 08:11:49,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:11:50,547 INFO L130 PetriNetUnfolder]: 3443/6138 cut-off events. [2023-08-30 08:11:50,548 INFO L131 PetriNetUnfolder]: For 18166/18166 co-relation queries the response was YES. [2023-08-30 08:11:50,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21801 conditions, 6138 events. 3443/6138 cut-off events. For 18166/18166 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 30311 event pairs, 719 based on Foata normal form. 194/6332 useless extension candidates. Maximal degree in co-relation 21584. Up to 1426 conditions per place. [2023-08-30 08:11:50,580 INFO L137 encePairwiseOnDemand]: 305/314 looper letters, 276 selfloop transitions, 63 changer transitions 3/343 dead transitions. [2023-08-30 08:11:50,581 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 343 transitions, 2846 flow [2023-08-30 08:11:50,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-30 08:11:50,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-30 08:11:50,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 3044 transitions. [2023-08-30 08:11:50,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5102246061012403 [2023-08-30 08:11:50,588 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 3044 transitions. [2023-08-30 08:11:50,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 3044 transitions. [2023-08-30 08:11:50,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:11:50,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 3044 transitions. [2023-08-30 08:11:50,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 160.21052631578948) internal successors, (3044), 19 states have internal predecessors, (3044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:50,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 314.0) internal successors, (6280), 20 states have internal predecessors, (6280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:50,605 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 314.0) internal successors, (6280), 20 states have internal predecessors, (6280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:50,605 INFO L175 Difference]: Start difference. First operand has 79 places, 76 transitions, 689 flow. Second operand 19 states and 3044 transitions. [2023-08-30 08:11:50,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 343 transitions, 2846 flow [2023-08-30 08:11:50,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 343 transitions, 2825 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 08:11:50,628 INFO L231 Difference]: Finished difference. Result has 101 places, 111 transitions, 1294 flow [2023-08-30 08:11:50,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1294, PETRI_PLACES=101, PETRI_TRANSITIONS=111} [2023-08-30 08:11:50,629 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 59 predicate places. [2023-08-30 08:11:50,629 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 111 transitions, 1294 flow [2023-08-30 08:11:50,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 149.05555555555554) internal successors, (2683), 18 states have internal predecessors, (2683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:50,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:11:50,631 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:11:50,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 08:11:50,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:11:50,837 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:11:50,837 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:11:50,837 INFO L85 PathProgramCache]: Analyzing trace with hash -341440793, now seen corresponding path program 1 times [2023-08-30 08:11:50,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:11:50,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492741742] [2023-08-30 08:11:50,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:11:50,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:11:50,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:11:51,024 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:11:51,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:11:51,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492741742] [2023-08-30 08:11:51,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492741742] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:11:51,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206078698] [2023-08-30 08:11:51,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:11:51,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:11:51,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:11:51,027 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:11:51,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 08:11:51,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:11:51,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 08:11:51,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:11:51,197 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:11:51,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:11:51,283 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:11:51,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [206078698] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:11:51,283 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:11:51,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2023-08-30 08:11:51,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195940661] [2023-08-30 08:11:51,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:11:51,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 08:11:51,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:11:51,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 08:11:51,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2023-08-30 08:11:51,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 314 [2023-08-30 08:11:51,387 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 111 transitions, 1294 flow. Second operand has 16 states, 16 states have (on average 143.0) internal successors, (2288), 16 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 08:11:51,387 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:11:51,387 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 314 [2023-08-30 08:11:51,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:11:52,301 INFO L130 PetriNetUnfolder]: 3773/6716 cut-off events. [2023-08-30 08:11:52,301 INFO L131 PetriNetUnfolder]: For 22994/22994 co-relation queries the response was YES. [2023-08-30 08:11:52,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24748 conditions, 6716 events. 3773/6716 cut-off events. For 22994/22994 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 34129 event pairs, 735 based on Foata normal form. 64/6780 useless extension candidates. Maximal degree in co-relation 24524. Up to 3406 conditions per place. [2023-08-30 08:11:52,340 INFO L137 encePairwiseOnDemand]: 304/314 looper letters, 140 selfloop transitions, 79 changer transitions 21/241 dead transitions. [2023-08-30 08:11:52,340 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 241 transitions, 2405 flow [2023-08-30 08:11:52,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-30 08:11:52,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-30 08:11:52,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2232 transitions. [2023-08-30 08:11:52,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47388535031847134 [2023-08-30 08:11:52,346 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2232 transitions. [2023-08-30 08:11:52,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2232 transitions. [2023-08-30 08:11:52,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:11:52,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2232 transitions. [2023-08-30 08:11:52,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 148.8) internal successors, (2232), 15 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:52,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 314.0) internal successors, (5024), 16 states have internal predecessors, (5024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:52,359 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 314.0) internal successors, (5024), 16 states have internal predecessors, (5024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:52,359 INFO L175 Difference]: Start difference. First operand has 101 places, 111 transitions, 1294 flow. Second operand 15 states and 2232 transitions. [2023-08-30 08:11:52,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 241 transitions, 2405 flow [2023-08-30 08:11:52,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 241 transitions, 2211 flow, removed 55 selfloop flow, removed 9 redundant places. [2023-08-30 08:11:52,408 INFO L231 Difference]: Finished difference. Result has 107 places, 118 transitions, 1392 flow [2023-08-30 08:11:52,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=1092, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1392, PETRI_PLACES=107, PETRI_TRANSITIONS=118} [2023-08-30 08:11:52,409 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 65 predicate places. [2023-08-30 08:11:52,409 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 118 transitions, 1392 flow [2023-08-30 08:11:52,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 143.0) internal successors, (2288), 16 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 08:11:52,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:11:52,410 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:11:52,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 08:11:52,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:11:52,616 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:11:52,616 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:11:52,616 INFO L85 PathProgramCache]: Analyzing trace with hash 117434737, now seen corresponding path program 2 times [2023-08-30 08:11:52,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:11:52,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547867341] [2023-08-30 08:11:52,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:11:52,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:11:52,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:11:52,778 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:11:52,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:11:52,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547867341] [2023-08-30 08:11:52,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547867341] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:11:52,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:11:52,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 08:11:52,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375705671] [2023-08-30 08:11:52,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:11:52,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 08:11:52,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:11:52,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 08:11:52,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 08:11:52,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 314 [2023-08-30 08:11:52,837 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 118 transitions, 1392 flow. Second operand has 6 states, 6 states have (on average 145.83333333333334) internal successors, (875), 6 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:52,838 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:11:52,838 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 314 [2023-08-30 08:11:52,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:11:53,325 INFO L130 PetriNetUnfolder]: 2588/4665 cut-off events. [2023-08-30 08:11:53,325 INFO L131 PetriNetUnfolder]: For 14947/14947 co-relation queries the response was YES. [2023-08-30 08:11:53,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17242 conditions, 4665 events. 2588/4665 cut-off events. For 14947/14947 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 21888 event pairs, 413 based on Foata normal form. 84/4749 useless extension candidates. Maximal degree in co-relation 17016. Up to 3150 conditions per place. [2023-08-30 08:11:53,356 INFO L137 encePairwiseOnDemand]: 304/314 looper letters, 71 selfloop transitions, 62 changer transitions 0/134 dead transitions. [2023-08-30 08:11:53,357 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 134 transitions, 1538 flow [2023-08-30 08:11:53,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 08:11:53,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 08:11:53,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1041 transitions. [2023-08-30 08:11:53,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47361237488626023 [2023-08-30 08:11:53,360 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1041 transitions. [2023-08-30 08:11:53,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1041 transitions. [2023-08-30 08:11:53,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:11:53,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1041 transitions. [2023-08-30 08:11:53,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 148.71428571428572) internal successors, (1041), 7 states have internal predecessors, (1041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:53,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 314.0) internal successors, (2512), 8 states have internal predecessors, (2512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:53,367 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 314.0) internal successors, (2512), 8 states have internal predecessors, (2512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:53,367 INFO L175 Difference]: Start difference. First operand has 107 places, 118 transitions, 1392 flow. Second operand 7 states and 1041 transitions. [2023-08-30 08:11:53,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 134 transitions, 1538 flow [2023-08-30 08:11:53,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 134 transitions, 1450 flow, removed 31 selfloop flow, removed 6 redundant places. [2023-08-30 08:11:53,402 INFO L231 Difference]: Finished difference. Result has 104 places, 102 transitions, 1215 flow [2023-08-30 08:11:53,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=1036, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1215, PETRI_PLACES=104, PETRI_TRANSITIONS=102} [2023-08-30 08:11:53,403 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 62 predicate places. [2023-08-30 08:11:53,403 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 102 transitions, 1215 flow [2023-08-30 08:11:53,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 145.83333333333334) internal successors, (875), 6 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:53,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:11:53,403 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:11:53,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 08:11:53,404 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:11:53,404 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:11:53,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1894392210, now seen corresponding path program 1 times [2023-08-30 08:11:53,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:11:53,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50921227] [2023-08-30 08:11:53,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:11:53,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:11:53,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:11:53,575 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 08:11:53,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:11:53,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50921227] [2023-08-30 08:11:53,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50921227] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:11:53,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407819390] [2023-08-30 08:11:53,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:11:53,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:11:53,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:11:53,581 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:11:53,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 08:11:53,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:11:53,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 08:11:53,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:11:53,767 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 08:11:53,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:11:53,870 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 08:11:53,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407819390] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:11:53,871 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:11:53,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 14 [2023-08-30 08:11:53,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838946247] [2023-08-30 08:11:53,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:11:53,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 08:11:53,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:11:53,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 08:11:53,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2023-08-30 08:11:53,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 314 [2023-08-30 08:11:53,970 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 102 transitions, 1215 flow. Second operand has 16 states, 16 states have (on average 145.125) internal successors, (2322), 16 states have internal predecessors, (2322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:53,970 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:11:53,970 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 314 [2023-08-30 08:11:53,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:11:55,045 INFO L130 PetriNetUnfolder]: 3563/6402 cut-off events. [2023-08-30 08:11:55,046 INFO L131 PetriNetUnfolder]: For 20795/20795 co-relation queries the response was YES. [2023-08-30 08:11:55,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24063 conditions, 6402 events. 3563/6402 cut-off events. For 20795/20795 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 32710 event pairs, 505 based on Foata normal form. 44/6446 useless extension candidates. Maximal degree in co-relation 23836. Up to 1619 conditions per place. [2023-08-30 08:11:55,090 INFO L137 encePairwiseOnDemand]: 305/314 looper letters, 225 selfloop transitions, 80 changer transitions 0/306 dead transitions. [2023-08-30 08:11:55,090 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 306 transitions, 3050 flow [2023-08-30 08:11:55,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-30 08:11:55,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-30 08:11:55,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2866 transitions. [2023-08-30 08:11:55,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48038887026483407 [2023-08-30 08:11:55,099 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2866 transitions. [2023-08-30 08:11:55,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2866 transitions. [2023-08-30 08:11:55,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:11:55,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2866 transitions. [2023-08-30 08:11:55,107 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 150.8421052631579) internal successors, (2866), 19 states have internal predecessors, (2866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:55,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 314.0) internal successors, (6280), 20 states have internal predecessors, (6280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:55,118 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 314.0) internal successors, (6280), 20 states have internal predecessors, (6280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:55,118 INFO L175 Difference]: Start difference. First operand has 104 places, 102 transitions, 1215 flow. Second operand 19 states and 2866 transitions. [2023-08-30 08:11:55,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 306 transitions, 3050 flow [2023-08-30 08:11:55,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 306 transitions, 2864 flow, removed 47 selfloop flow, removed 4 redundant places. [2023-08-30 08:11:55,169 INFO L231 Difference]: Finished difference. Result has 125 places, 137 transitions, 1804 flow [2023-08-30 08:11:55,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=1111, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1804, PETRI_PLACES=125, PETRI_TRANSITIONS=137} [2023-08-30 08:11:55,171 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 83 predicate places. [2023-08-30 08:11:55,172 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 137 transitions, 1804 flow [2023-08-30 08:11:55,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 145.125) internal successors, (2322), 16 states have internal predecessors, (2322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:55,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:11:55,173 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:11:55,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 08:11:55,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-30 08:11:55,381 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:11:55,381 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:11:55,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1791692103, now seen corresponding path program 2 times [2023-08-30 08:11:55,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:11:55,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881881484] [2023-08-30 08:11:55,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:11:55,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:11:55,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:11:55,613 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-30 08:11:55,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:11:55,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881881484] [2023-08-30 08:11:55,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881881484] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:11:55,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645579406] [2023-08-30 08:11:55,614 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 08:11:55,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:11:55,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:11:55,615 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:11:55,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 08:11:55,767 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 08:11:55,767 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 08:11:55,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-30 08:11:55,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:11:55,863 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-30 08:11:55,863 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:11:56,045 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-30 08:11:56,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645579406] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:11:56,045 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:11:56,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2023-08-30 08:11:56,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035351077] [2023-08-30 08:11:56,046 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:11:56,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-30 08:11:56,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:11:56,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-30 08:11:56,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=415, Unknown=0, NotChecked=0, Total=552 [2023-08-30 08:11:56,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 314 [2023-08-30 08:11:56,184 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 137 transitions, 1804 flow. Second operand has 24 states, 24 states have (on average 143.41666666666666) internal successors, (3442), 24 states have internal predecessors, (3442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:56,184 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:11:56,184 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 314 [2023-08-30 08:11:56,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:11:57,612 INFO L130 PetriNetUnfolder]: 4971/8918 cut-off events. [2023-08-30 08:11:57,612 INFO L131 PetriNetUnfolder]: For 32883/32883 co-relation queries the response was YES. [2023-08-30 08:11:57,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33883 conditions, 8918 events. 4971/8918 cut-off events. For 32883/32883 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 48384 event pairs, 537 based on Foata normal form. 114/9032 useless extension candidates. Maximal degree in co-relation 33650. Up to 1862 conditions per place. [2023-08-30 08:11:57,700 INFO L137 encePairwiseOnDemand]: 306/314 looper letters, 293 selfloop transitions, 154 changer transitions 0/448 dead transitions. [2023-08-30 08:11:57,700 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 448 transitions, 4536 flow [2023-08-30 08:11:57,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-08-30 08:11:57,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-08-30 08:11:57,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 4744 transitions. [2023-08-30 08:11:57,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4721337579617834 [2023-08-30 08:11:57,708 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 4744 transitions. [2023-08-30 08:11:57,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 4744 transitions. [2023-08-30 08:11:57,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:11:57,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 4744 transitions. [2023-08-30 08:11:57,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 148.25) internal successors, (4744), 32 states have internal predecessors, (4744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:57,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 314.0) internal successors, (10362), 33 states have internal predecessors, (10362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:57,730 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 314.0) internal successors, (10362), 33 states have internal predecessors, (10362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:57,730 INFO L175 Difference]: Start difference. First operand has 125 places, 137 transitions, 1804 flow. Second operand 32 states and 4744 transitions. [2023-08-30 08:11:57,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 448 transitions, 4536 flow [2023-08-30 08:11:57,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 448 transitions, 4472 flow, removed 30 selfloop flow, removed 2 redundant places. [2023-08-30 08:11:57,818 INFO L231 Difference]: Finished difference. Result has 159 places, 193 transitions, 2910 flow [2023-08-30 08:11:57,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=1713, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=2910, PETRI_PLACES=159, PETRI_TRANSITIONS=193} [2023-08-30 08:11:57,819 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 117 predicate places. [2023-08-30 08:11:57,819 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 193 transitions, 2910 flow [2023-08-30 08:11:57,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 143.41666666666666) internal successors, (3442), 24 states have internal predecessors, (3442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:57,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:11:57,820 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:11:57,829 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-30 08:11:58,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-30 08:11:58,029 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:11:58,030 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:11:58,030 INFO L85 PathProgramCache]: Analyzing trace with hash -953431303, now seen corresponding path program 3 times [2023-08-30 08:11:58,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:11:58,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371619641] [2023-08-30 08:11:58,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:11:58,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:11:58,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:11:58,414 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 08:11:58,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:11:58,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371619641] [2023-08-30 08:11:58,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371619641] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:11:58,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392097764] [2023-08-30 08:11:58,416 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 08:11:58,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:11:58,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:11:58,417 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:11:58,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 08:11:58,732 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-08-30 08:11:58,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 08:11:58,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-30 08:11:58,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:11:58,838 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 08:11:58,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:11:59,054 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 08:11:59,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392097764] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:11:59,055 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:11:59,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 26 [2023-08-30 08:11:59,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734926004] [2023-08-30 08:11:59,055 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:11:59,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-08-30 08:11:59,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:11:59,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-08-30 08:11:59,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=569, Unknown=0, NotChecked=0, Total=756 [2023-08-30 08:11:59,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 314 [2023-08-30 08:11:59,227 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 193 transitions, 2910 flow. Second operand has 28 states, 28 states have (on average 143.64285714285714) internal successors, (4022), 28 states have internal predecessors, (4022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:11:59,227 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:11:59,227 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 314 [2023-08-30 08:11:59,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:12:00,603 INFO L130 PetriNetUnfolder]: 4943/8888 cut-off events. [2023-08-30 08:12:00,603 INFO L131 PetriNetUnfolder]: For 30171/30171 co-relation queries the response was YES. [2023-08-30 08:12:00,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35043 conditions, 8888 events. 4943/8888 cut-off events. For 30171/30171 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 48327 event pairs, 795 based on Foata normal form. 38/8926 useless extension candidates. Maximal degree in co-relation 34804. Up to 3203 conditions per place. [2023-08-30 08:12:00,650 INFO L137 encePairwiseOnDemand]: 305/314 looper letters, 0 selfloop transitions, 0 changer transitions 334/334 dead transitions. [2023-08-30 08:12:00,650 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 334 transitions, 4110 flow [2023-08-30 08:12:00,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-30 08:12:00,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-30 08:12:00,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2950 transitions. [2023-08-30 08:12:00,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4697452229299363 [2023-08-30 08:12:00,660 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2950 transitions. [2023-08-30 08:12:00,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2950 transitions. [2023-08-30 08:12:00,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:12:00,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2950 transitions. [2023-08-30 08:12:00,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 147.5) internal successors, (2950), 20 states have internal predecessors, (2950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:12:00,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 314.0) internal successors, (6594), 21 states have internal predecessors, (6594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:12:00,671 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 314.0) internal successors, (6594), 21 states have internal predecessors, (6594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:12:00,671 INFO L175 Difference]: Start difference. First operand has 159 places, 193 transitions, 2910 flow. Second operand 20 states and 2950 transitions. [2023-08-30 08:12:00,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 334 transitions, 4110 flow [2023-08-30 08:12:00,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 334 transitions, 3744 flow, removed 31 selfloop flow, removed 24 redundant places. [2023-08-30 08:12:00,773 INFO L231 Difference]: Finished difference. Result has 153 places, 0 transitions, 0 flow [2023-08-30 08:12:00,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=2426, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=0, PETRI_PLACES=153, PETRI_TRANSITIONS=0} [2023-08-30 08:12:00,773 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 111 predicate places. [2023-08-30 08:12:00,773 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 0 transitions, 0 flow [2023-08-30 08:12:00,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 143.64285714285714) internal successors, (4022), 28 states have internal predecessors, (4022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:12:00,776 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2023-08-30 08:12:00,777 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 18 remaining) [2023-08-30 08:12:00,777 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2023-08-30 08:12:00,777 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2023-08-30 08:12:00,777 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2023-08-30 08:12:00,777 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2023-08-30 08:12:00,777 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2023-08-30 08:12:00,777 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2023-08-30 08:12:00,777 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2023-08-30 08:12:00,777 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2023-08-30 08:12:00,778 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2023-08-30 08:12:00,778 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2023-08-30 08:12:00,778 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2023-08-30 08:12:00,778 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2023-08-30 08:12:00,778 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2023-08-30 08:12:00,778 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2023-08-30 08:12:00,778 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2023-08-30 08:12:00,778 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2023-08-30 08:12:00,788 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 08:12:00,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:12:00,989 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:12:00,994 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 08:12:00,994 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 08:12:00,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 08:12:00 BasicIcfg [2023-08-30 08:12:00,997 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 08:12:00,998 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 08:12:00,998 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 08:12:00,998 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 08:12:00,998 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 08:11:36" (3/4) ... [2023-08-30 08:12:01,000 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 08:12:01,005 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t1 [2023-08-30 08:12:01,005 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2 [2023-08-30 08:12:01,010 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2023-08-30 08:12:01,010 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 08:12:01,011 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 08:12:01,011 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 08:12:01,041 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 08:12:01,042 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 08:12:01,042 INFO L158 Benchmark]: Toolchain (without parser) took 26046.10ms. Allocated memory was 69.2MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 45.5MB in the beginning and 606.6MB in the end (delta: -561.0MB). Peak memory consumption was 874.0MB. Max. memory is 16.1GB. [2023-08-30 08:12:01,043 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 50.3MB. Free memory was 28.7MB in the beginning and 28.7MB in the end (delta: 1.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 08:12:01,044 INFO L158 Benchmark]: CACSL2BoogieTranslator took 775.94ms. Allocated memory is still 69.2MB. Free memory was 45.3MB in the beginning and 34.8MB in the end (delta: 10.5MB). Peak memory consumption was 19.2MB. Max. memory is 16.1GB. [2023-08-30 08:12:01,044 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.25ms. Allocated memory is still 69.2MB. Free memory was 34.8MB in the beginning and 32.2MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 08:12:01,044 INFO L158 Benchmark]: Boogie Preprocessor took 29.92ms. Allocated memory is still 69.2MB. Free memory was 31.9MB in the beginning and 30.2MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 08:12:01,045 INFO L158 Benchmark]: RCFGBuilder took 575.58ms. Allocated memory was 69.2MB in the beginning and 83.9MB in the end (delta: 14.7MB). Free memory was 30.2MB in the beginning and 46.6MB in the end (delta: -16.4MB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. [2023-08-30 08:12:01,045 INFO L158 Benchmark]: TraceAbstraction took 24553.11ms. Allocated memory was 83.9MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 45.9MB in the beginning and 609.7MB in the end (delta: -563.8MB). Peak memory consumption was 855.4MB. Max. memory is 16.1GB. [2023-08-30 08:12:01,047 INFO L158 Benchmark]: Witness Printer took 44.02ms. Allocated memory is still 1.5GB. Free memory was 609.7MB in the beginning and 606.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 08:12:01,050 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 50.3MB. Free memory was 28.7MB in the beginning and 28.7MB in the end (delta: 1.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 775.94ms. Allocated memory is still 69.2MB. Free memory was 45.3MB in the beginning and 34.8MB in the end (delta: 10.5MB). Peak memory consumption was 19.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.25ms. Allocated memory is still 69.2MB. Free memory was 34.8MB in the beginning and 32.2MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.92ms. Allocated memory is still 69.2MB. Free memory was 31.9MB in the beginning and 30.2MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 575.58ms. Allocated memory was 69.2MB in the beginning and 83.9MB in the end (delta: 14.7MB). Free memory was 30.2MB in the beginning and 46.6MB in the end (delta: -16.4MB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. * TraceAbstraction took 24553.11ms. Allocated memory was 83.9MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 45.9MB in the beginning and 609.7MB in the end (delta: -563.8MB). Peak memory consumption was 855.4MB. Max. memory is 16.1GB. * Witness Printer took 44.02ms. Allocated memory is still 1.5GB. Free memory was 609.7MB in the beginning and 606.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.2s, 155 PlacesBefore, 42 PlacesAfterwards, 158 TransitionsBefore, 40 TransitionsAfterwards, 8200 CoEnabledTransitionPairs, 6 FixpointIterations, 30 TrivialSequentialCompositions, 92 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 18 ConcurrentYvCompositions, 5 ChoiceCompositions, 145 TotalNumberOfCompositions, 11973 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 9149, independent: 8913, independent conditional: 0, independent unconditional: 8913, dependent: 236, dependent conditional: 0, dependent unconditional: 236, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 4749, independent: 4698, independent conditional: 0, independent unconditional: 4698, dependent: 51, dependent conditional: 0, dependent unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 9149, independent: 4215, independent conditional: 0, independent unconditional: 4215, dependent: 185, dependent conditional: 0, dependent unconditional: 185, unknown: 4749, unknown conditional: 0, unknown unconditional: 4749] , Statistics on independence cache: Total cache size (in pairs): 284, Positive cache size: 263, Positive conditional cache size: 0, Positive unconditional cache size: 263, Negative cache size: 21, Negative conditional cache size: 0, Negative unconditional cache size: 21, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 992]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 946]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 992]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 946]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1006]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1006]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 950]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 950]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 268 locations, 18 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 24.4s, OverallIterations: 18, TraceHistogramMax: 7, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 13.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3124 SdHoareTripleChecker+Valid, 3.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2827 mSDsluCounter, 1340 SdHoareTripleChecker+Invalid, 2.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1295 mSDsCounter, 255 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5748 IncrementalHoareTripleChecker+Invalid, 6003 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 255 mSolverCounterUnsat, 45 mSDtfsCounter, 5748 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 650 GetRequests, 455 SyntacticMatches, 0 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1075 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2910occurred in iteration=17, InterpolantAutomatonStates: 168, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 711 NumberOfCodeBlocks, 711 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 922 ConstructedInterpolants, 0 QuantifiedInterpolants, 2610 SizeOfPredicates, 24 NumberOfNonLiveVariables, 2341 ConjunctsInSsa, 68 ConjunctsInUnsatCore, 31 InterpolantComputations, 12 PerfectInterpolantSequences, 131/994 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 08:12:01,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE