./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/pthread/stack_longest-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_longest-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 529fe0895c01c52d9b18b51c32204a307faf547c0c07b22bc1a431308affcf90 --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 08:24:10,908 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 08:24:10,911 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 08:24:10,954 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 08:24:10,955 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 08:24:10,958 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 08:24:10,960 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 08:24:10,962 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 08:24:10,964 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 08:24:10,969 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 08:24:10,970 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 08:24:10,971 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 08:24:10,971 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 08:24:10,973 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 08:24:10,974 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 08:24:10,977 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 08:24:10,978 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 08:24:10,980 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 08:24:10,981 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 08:24:10,986 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 08:24:10,993 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 08:24:10,994 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 08:24:10,994 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 08:24:10,995 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 08:24:11,002 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 08:24:11,002 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 08:24:11,002 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 08:24:11,004 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 08:24:11,006 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 08:24:11,007 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 08:24:11,008 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 08:24:11,009 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 08:24:11,010 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 08:24:11,011 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 08:24:11,012 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 08:24:11,012 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 08:24:11,013 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 08:24:11,013 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 08:24:11,013 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 08:24:11,014 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 08:24:11,014 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 08:24:11,016 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 08:24:11,050 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 08:24:11,050 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 08:24:11,051 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 08:24:11,052 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 08:24:11,052 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 08:24:11,052 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 08:24:11,053 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 08:24:11,053 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 08:24:11,054 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 08:24:11,054 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 08:24:11,055 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 08:24:11,055 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 08:24:11,055 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 08:24:11,055 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 08:24:11,055 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 08:24:11,056 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 08:24:11,056 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 08:24:11,056 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 08:24:11,056 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 08:24:11,057 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 08:24:11,058 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 08:24:11,061 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 08:24:11,062 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 08:24:11,063 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 08:24:11,064 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 08:24:11,064 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 08:24:11,064 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 08:24:11,065 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 08:24:11,065 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 08:24:11,065 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 08:24:11,065 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 08:24:11,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 08:24:11,066 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 08:24:11,066 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 08:24:11,066 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 08:24:11,066 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 08:24:11,067 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 08:24:11,067 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 529fe0895c01c52d9b18b51c32204a307faf547c0c07b22bc1a431308affcf90 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 08:24:11,358 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 08:24:11,384 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 08:24:11,388 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 08:24:11,389 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 08:24:11,389 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 08:24:11,390 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack_longest-1.i [2023-08-30 08:24:12,621 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 08:24:12,860 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 08:24:12,860 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack_longest-1.i [2023-08-30 08:24:12,873 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e3369571/255e3f7e827644628d2fccc74063cf4d/FLAG8b4964473 [2023-08-30 08:24:12,887 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e3369571/255e3f7e827644628d2fccc74063cf4d [2023-08-30 08:24:12,896 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 08:24:12,898 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 08:24:12,899 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 08:24:12,899 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 08:24:12,903 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 08:24:12,903 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 08:24:12" (1/1) ... [2023-08-30 08:24:12,905 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e5ba8d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:24:12, skipping insertion in model container [2023-08-30 08:24:12,905 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 08:24:12" (1/1) ... [2023-08-30 08:24:12,911 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 08:24:12,971 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 08:24:13,409 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_longest-1.i[41530,41543] [2023-08-30 08:24:13,442 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 08:24:13,454 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 08:24:13,507 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_longest-1.i[41530,41543] [2023-08-30 08:24:13,518 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 08:24:13,580 INFO L208 MainTranslator]: Completed translation [2023-08-30 08:24:13,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:24:13 WrapperNode [2023-08-30 08:24:13,580 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 08:24:13,582 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 08:24:13,582 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 08:24:13,582 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 08:24:13,588 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:24:13" (1/1) ... [2023-08-30 08:24:13,607 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:24:13" (1/1) ... [2023-08-30 08:24:13,631 INFO L138 Inliner]: procedures = 277, calls = 39, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 164 [2023-08-30 08:24:13,632 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 08:24:13,632 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 08:24:13,633 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 08:24:13,633 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 08:24:13,640 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:24:13" (1/1) ... [2023-08-30 08:24:13,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:24:13" (1/1) ... [2023-08-30 08:24:13,644 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:24:13" (1/1) ... [2023-08-30 08:24:13,644 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:24:13" (1/1) ... [2023-08-30 08:24:13,665 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:24:13" (1/1) ... [2023-08-30 08:24:13,668 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:24:13" (1/1) ... [2023-08-30 08:24:13,670 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:24:13" (1/1) ... [2023-08-30 08:24:13,678 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:24:13" (1/1) ... [2023-08-30 08:24:13,681 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 08:24:13,682 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 08:24:13,682 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 08:24:13,682 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 08:24:13,683 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:24:13" (1/1) ... [2023-08-30 08:24:13,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 08:24:13,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:24:13,720 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 08:24:13,744 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 08:24:13,761 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-08-30 08:24:13,762 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-08-30 08:24:13,762 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-08-30 08:24:13,762 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-08-30 08:24:13,762 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 08:24:13,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 08:24:13,762 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 08:24:13,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 08:24:13,763 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 08:24:13,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 08:24:13,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 08:24:13,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 08:24:13,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 08:24:13,765 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 08:24:13,969 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 08:24:13,971 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 08:24:14,240 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 08:24:14,247 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 08:24:14,248 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-30 08:24:14,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 08:24:14 BoogieIcfgContainer [2023-08-30 08:24:14,250 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 08:24:14,252 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 08:24:14,252 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 08:24:14,254 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 08:24:14,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 08:24:12" (1/3) ... [2023-08-30 08:24:14,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f2aad45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 08:24:14, skipping insertion in model container [2023-08-30 08:24:14,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:24:13" (2/3) ... [2023-08-30 08:24:14,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f2aad45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 08:24:14, skipping insertion in model container [2023-08-30 08:24:14,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 08:24:14" (3/3) ... [2023-08-30 08:24:14,258 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_longest-1.i [2023-08-30 08:24:14,264 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 08:24:14,273 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 08:24:14,288 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-30 08:24:14,289 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 08:24:14,425 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 08:24:14,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 169 places, 172 transitions, 360 flow [2023-08-30 08:24:14,529 INFO L130 PetriNetUnfolder]: 10/170 cut-off events. [2023-08-30 08:24:14,529 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 08:24:14,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 170 events. 10/170 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 451 event pairs, 0 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 132. Up to 3 conditions per place. [2023-08-30 08:24:14,543 INFO L82 GeneralOperation]: Start removeDead. Operand has 169 places, 172 transitions, 360 flow [2023-08-30 08:24:14,547 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 158 places, 161 transitions, 331 flow [2023-08-30 08:24:14,553 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 08:24:14,562 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 158 places, 161 transitions, 331 flow [2023-08-30 08:24:14,565 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 158 places, 161 transitions, 331 flow [2023-08-30 08:24:14,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 158 places, 161 transitions, 331 flow [2023-08-30 08:24:14,601 INFO L130 PetriNetUnfolder]: 10/161 cut-off events. [2023-08-30 08:24:14,602 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 08:24:14,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 161 events. 10/161 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 374 event pairs, 0 based on Foata normal form. 0/143 useless extension candidates. Maximal degree in co-relation 132. Up to 3 conditions per place. [2023-08-30 08:24:14,608 INFO L119 LiptonReduction]: Number of co-enabled transitions 9140 [2023-08-30 08:24:18,057 INFO L134 LiptonReduction]: Checked pairs total: 13267 [2023-08-30 08:24:18,058 INFO L136 LiptonReduction]: Total number of compositions: 153 [2023-08-30 08:24:18,069 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 08:24:18,074 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;@761de15b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 08:24:18,075 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-08-30 08:24:18,080 INFO L130 PetriNetUnfolder]: 1/19 cut-off events. [2023-08-30 08:24:18,080 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 08:24:18,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:24:18,081 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:24:18,081 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:24:18,085 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:24:18,086 INFO L85 PathProgramCache]: Analyzing trace with hash -609150059, now seen corresponding path program 1 times [2023-08-30 08:24:18,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:24:18,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409893377] [2023-08-30 08:24:18,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:24:18,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:24:18,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:24:18,374 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 08:24:18,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:24:18,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409893377] [2023-08-30 08:24:18,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409893377] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:24:18,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:24:18,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:24:18,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771594785] [2023-08-30 08:24:18,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:24:18,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:24:18,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:24:18,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:24:18,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:24:18,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 325 [2023-08-30 08:24:18,451 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 40 transitions, 89 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 08:24:18,452 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:24:18,452 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 325 [2023-08-30 08:24:18,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:24:18,744 INFO L130 PetriNetUnfolder]: 1413/2282 cut-off events. [2023-08-30 08:24:18,744 INFO L131 PetriNetUnfolder]: For 83/83 co-relation queries the response was YES. [2023-08-30 08:24:18,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4613 conditions, 2282 events. 1413/2282 cut-off events. For 83/83 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 10482 event pairs, 412 based on Foata normal form. 0/1579 useless extension candidates. Maximal degree in co-relation 4322. Up to 1406 conditions per place. [2023-08-30 08:24:18,758 INFO L137 encePairwiseOnDemand]: 316/325 looper letters, 65 selfloop transitions, 4 changer transitions 0/70 dead transitions. [2023-08-30 08:24:18,759 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 70 transitions, 293 flow [2023-08-30 08:24:18,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:24:18,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:24:18,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 545 transitions. [2023-08-30 08:24:18,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.558974358974359 [2023-08-30 08:24:18,774 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 545 transitions. [2023-08-30 08:24:18,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 545 transitions. [2023-08-30 08:24:18,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:24:18,778 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 545 transitions. [2023-08-30 08:24:18,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 181.66666666666666) internal successors, (545), 3 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:18,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:18,788 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:18,789 INFO L175 Difference]: Start difference. First operand has 42 places, 40 transitions, 89 flow. Second operand 3 states and 545 transitions. [2023-08-30 08:24:18,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 70 transitions, 293 flow [2023-08-30 08:24:18,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 70 transitions, 285 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 08:24:18,795 INFO L231 Difference]: Finished difference. Result has 43 places, 43 transitions, 122 flow [2023-08-30 08:24:18,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=43, PETRI_TRANSITIONS=43} [2023-08-30 08:24:18,800 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 1 predicate places. [2023-08-30 08:24:18,800 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 43 transitions, 122 flow [2023-08-30 08:24:18,800 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 08:24:18,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:24:18,801 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:24:18,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 08:24:18,801 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:24:18,802 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:24:18,802 INFO L85 PathProgramCache]: Analyzing trace with hash 763448863, now seen corresponding path program 1 times [2023-08-30 08:24:18,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:24:18,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570458296] [2023-08-30 08:24:18,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:24:18,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:24:18,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:24:18,894 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 08:24:18,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:24:18,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570458296] [2023-08-30 08:24:18,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570458296] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:24:18,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:24:18,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:24:18,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79517298] [2023-08-30 08:24:18,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:24:18,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:24:18,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:24:18,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:24:18,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:24:18,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 325 [2023-08-30 08:24:18,912 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 43 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 159.66666666666666) internal successors, (479), 3 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:18,913 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:24:18,913 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 325 [2023-08-30 08:24:18,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:24:19,256 INFO L130 PetriNetUnfolder]: 2114/3495 cut-off events. [2023-08-30 08:24:19,257 INFO L131 PetriNetUnfolder]: For 371/371 co-relation queries the response was YES. [2023-08-30 08:24:19,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7679 conditions, 3495 events. 2114/3495 cut-off events. For 371/371 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 18659 event pairs, 994 based on Foata normal form. 0/2829 useless extension candidates. Maximal degree in co-relation 7030. Up to 2132 conditions per place. [2023-08-30 08:24:19,275 INFO L137 encePairwiseOnDemand]: 320/325 looper letters, 74 selfloop transitions, 2 changer transitions 0/77 dead transitions. [2023-08-30 08:24:19,275 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 77 transitions, 371 flow [2023-08-30 08:24:19,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:24:19,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:24:19,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 544 transitions. [2023-08-30 08:24:19,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5579487179487179 [2023-08-30 08:24:19,278 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 544 transitions. [2023-08-30 08:24:19,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 544 transitions. [2023-08-30 08:24:19,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:24:19,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 544 transitions. [2023-08-30 08:24:19,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 181.33333333333334) internal successors, (544), 3 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:19,282 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:19,283 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:19,283 INFO L175 Difference]: Start difference. First operand has 43 places, 43 transitions, 122 flow. Second operand 3 states and 544 transitions. [2023-08-30 08:24:19,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 77 transitions, 371 flow [2023-08-30 08:24:19,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 77 transitions, 357 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 08:24:19,289 INFO L231 Difference]: Finished difference. Result has 44 places, 44 transitions, 130 flow [2023-08-30 08:24:19,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=44, PETRI_TRANSITIONS=44} [2023-08-30 08:24:19,291 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 2 predicate places. [2023-08-30 08:24:19,291 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 44 transitions, 130 flow [2023-08-30 08:24:19,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 159.66666666666666) internal successors, (479), 3 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:19,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:24:19,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:24:19,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 08:24:19,292 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 08:24:19,293 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:24:19,293 INFO L85 PathProgramCache]: Analyzing trace with hash 755415305, now seen corresponding path program 1 times [2023-08-30 08:24:19,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:24:19,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719569402] [2023-08-30 08:24:19,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:24:19,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:24:19,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:24:19,411 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 08:24:19,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:24:19,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719569402] [2023-08-30 08:24:19,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719569402] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:24:19,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:24:19,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:24:19,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152341697] [2023-08-30 08:24:19,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:24:19,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:24:19,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:24:19,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:24:19,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:24:19,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 325 [2023-08-30 08:24:19,426 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 44 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:19,426 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:24:19,426 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 325 [2023-08-30 08:24:19,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:24:19,908 INFO L130 PetriNetUnfolder]: 3369/5392 cut-off events. [2023-08-30 08:24:19,908 INFO L131 PetriNetUnfolder]: For 697/697 co-relation queries the response was YES. [2023-08-30 08:24:19,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12649 conditions, 5392 events. 3369/5392 cut-off events. For 697/697 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 31003 event pairs, 1475 based on Foata normal form. 0/4482 useless extension candidates. Maximal degree in co-relation 8352. Up to 3297 conditions per place. [2023-08-30 08:24:19,935 INFO L137 encePairwiseOnDemand]: 320/325 looper letters, 76 selfloop transitions, 2 changer transitions 0/79 dead transitions. [2023-08-30 08:24:19,935 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 79 transitions, 394 flow [2023-08-30 08:24:19,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:24:19,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:24:19,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 544 transitions. [2023-08-30 08:24:19,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5579487179487179 [2023-08-30 08:24:19,938 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 544 transitions. [2023-08-30 08:24:19,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 544 transitions. [2023-08-30 08:24:19,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:24:19,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 544 transitions. [2023-08-30 08:24:19,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 181.33333333333334) internal successors, (544), 3 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:19,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:19,958 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:19,958 INFO L175 Difference]: Start difference. First operand has 44 places, 44 transitions, 130 flow. Second operand 3 states and 544 transitions. [2023-08-30 08:24:19,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 79 transitions, 394 flow [2023-08-30 08:24:19,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 79 transitions, 390 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:24:19,961 INFO L231 Difference]: Finished difference. Result has 46 places, 45 transitions, 144 flow [2023-08-30 08:24:19,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=46, PETRI_TRANSITIONS=45} [2023-08-30 08:24:19,962 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2023-08-30 08:24:19,962 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 45 transitions, 144 flow [2023-08-30 08:24:19,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:19,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:24:19,963 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:24:19,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 08:24:19,963 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:24:19,964 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:24:19,964 INFO L85 PathProgramCache]: Analyzing trace with hash -705100280, now seen corresponding path program 1 times [2023-08-30 08:24:19,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:24:19,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046248995] [2023-08-30 08:24:19,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:24:19,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:24:19,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:24:20,010 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 08:24:20,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:24:20,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046248995] [2023-08-30 08:24:20,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046248995] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:24:20,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:24:20,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:24:20,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212180827] [2023-08-30 08:24:20,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:24:20,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:24:20,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:24:20,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:24:20,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:24:20,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 325 [2023-08-30 08:24:20,021 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 45 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 159.66666666666666) internal successors, (479), 3 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:20,021 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:24:20,021 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 325 [2023-08-30 08:24:20,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:24:20,432 INFO L130 PetriNetUnfolder]: 2963/4886 cut-off events. [2023-08-30 08:24:20,432 INFO L131 PetriNetUnfolder]: For 806/806 co-relation queries the response was YES. [2023-08-30 08:24:20,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11542 conditions, 4886 events. 2963/4886 cut-off events. For 806/806 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 28108 event pairs, 551 based on Foata normal form. 0/4314 useless extension candidates. Maximal degree in co-relation 10810. Up to 3994 conditions per place. [2023-08-30 08:24:20,454 INFO L137 encePairwiseOnDemand]: 321/325 looper letters, 60 selfloop transitions, 4 changer transitions 0/65 dead transitions. [2023-08-30 08:24:20,455 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 65 transitions, 335 flow [2023-08-30 08:24:20,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:24:20,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:24:20,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 526 transitions. [2023-08-30 08:24:20,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5394871794871795 [2023-08-30 08:24:20,457 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 526 transitions. [2023-08-30 08:24:20,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 526 transitions. [2023-08-30 08:24:20,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:24:20,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 526 transitions. [2023-08-30 08:24:20,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:20,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:20,461 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:20,461 INFO L175 Difference]: Start difference. First operand has 46 places, 45 transitions, 144 flow. Second operand 3 states and 526 transitions. [2023-08-30 08:24:20,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 65 transitions, 335 flow [2023-08-30 08:24:20,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 65 transitions, 331 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:24:20,464 INFO L231 Difference]: Finished difference. Result has 47 places, 45 transitions, 154 flow [2023-08-30 08:24:20,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=47, PETRI_TRANSITIONS=45} [2023-08-30 08:24:20,465 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 5 predicate places. [2023-08-30 08:24:20,465 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 45 transitions, 154 flow [2023-08-30 08:24:20,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 159.66666666666666) internal successors, (479), 3 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:20,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:24:20,466 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:24:20,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 08:24:20,466 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:24:20,466 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:24:20,466 INFO L85 PathProgramCache]: Analyzing trace with hash -705100303, now seen corresponding path program 1 times [2023-08-30 08:24:20,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:24:20,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872970195] [2023-08-30 08:24:20,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:24:20,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:24:20,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:24:20,505 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 08:24:20,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:24:20,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872970195] [2023-08-30 08:24:20,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872970195] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:24:20,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:24:20,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:24:20,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003274951] [2023-08-30 08:24:20,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:24:20,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:24:20,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:24:20,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:24:20,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:24:20,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 325 [2023-08-30 08:24:20,515 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 45 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:20,515 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:24:20,516 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 325 [2023-08-30 08:24:20,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:24:20,863 INFO L130 PetriNetUnfolder]: 2775/4598 cut-off events. [2023-08-30 08:24:20,863 INFO L131 PetriNetUnfolder]: For 1776/1776 co-relation queries the response was YES. [2023-08-30 08:24:20,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11280 conditions, 4598 events. 2775/4598 cut-off events. For 1776/1776 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 26337 event pairs, 325 based on Foata normal form. 110/4258 useless extension candidates. Maximal degree in co-relation 10556. Up to 4306 conditions per place. [2023-08-30 08:24:20,918 INFO L137 encePairwiseOnDemand]: 323/325 looper letters, 62 selfloop transitions, 1 changer transitions 0/64 dead transitions. [2023-08-30 08:24:20,918 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 64 transitions, 339 flow [2023-08-30 08:24:20,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:24:20,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:24:20,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 527 transitions. [2023-08-30 08:24:20,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5405128205128205 [2023-08-30 08:24:20,920 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 527 transitions. [2023-08-30 08:24:20,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 527 transitions. [2023-08-30 08:24:20,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:24:20,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 527 transitions. [2023-08-30 08:24:20,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 175.66666666666666) internal successors, (527), 3 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:20,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:20,925 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:20,926 INFO L175 Difference]: Start difference. First operand has 47 places, 45 transitions, 154 flow. Second operand 3 states and 527 transitions. [2023-08-30 08:24:20,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 64 transitions, 339 flow [2023-08-30 08:24:20,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 64 transitions, 335 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:24:20,929 INFO L231 Difference]: Finished difference. Result has 47 places, 44 transitions, 148 flow [2023-08-30 08:24:20,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=47, PETRI_TRANSITIONS=44} [2023-08-30 08:24:20,930 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 5 predicate places. [2023-08-30 08:24:20,931 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 44 transitions, 148 flow [2023-08-30 08:24:20,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:20,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:24:20,931 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:24:20,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 08:24:20,932 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:24:20,932 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:24:20,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1791624054, now seen corresponding path program 1 times [2023-08-30 08:24:20,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:24:20,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032957581] [2023-08-30 08:24:20,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:24:20,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:24:20,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:24:21,013 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 08:24:21,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:24:21,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032957581] [2023-08-30 08:24:21,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032957581] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:24:21,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583186397] [2023-08-30 08:24:21,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:24:21,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:24:21,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:24:21,018 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 08:24:21,029 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 08:24:21,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:24:21,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 08:24:21,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:24:21,178 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 08:24:21,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:24:21,216 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 08:24:21,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583186397] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:24:21,217 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:24:21,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-08-30 08:24:21,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314106093] [2023-08-30 08:24:21,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:24:21,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 08:24:21,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:24:21,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 08:24:21,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-08-30 08:24:21,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 325 [2023-08-30 08:24:21,320 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 44 transitions, 148 flow. Second operand has 10 states, 10 states have (on average 155.7) internal successors, (1557), 10 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:21,320 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:24:21,320 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 325 [2023-08-30 08:24:21,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:24:22,320 INFO L130 PetriNetUnfolder]: 5222/8549 cut-off events. [2023-08-30 08:24:22,321 INFO L131 PetriNetUnfolder]: For 2737/2737 co-relation queries the response was YES. [2023-08-30 08:24:22,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21093 conditions, 8549 events. 5222/8549 cut-off events. For 2737/2737 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 49417 event pairs, 1050 based on Foata normal form. 110/7907 useless extension candidates. Maximal degree in co-relation 20158. Up to 2827 conditions per place. [2023-08-30 08:24:22,366 INFO L137 encePairwiseOnDemand]: 315/325 looper letters, 248 selfloop transitions, 42 changer transitions 0/291 dead transitions. [2023-08-30 08:24:22,367 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 291 transitions, 1546 flow [2023-08-30 08:24:22,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-30 08:24:22,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-30 08:24:22,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2709 transitions. [2023-08-30 08:24:22,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5209615384615385 [2023-08-30 08:24:22,375 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2709 transitions. [2023-08-30 08:24:22,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2709 transitions. [2023-08-30 08:24:22,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:24:22,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2709 transitions. [2023-08-30 08:24:22,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 169.3125) internal successors, (2709), 16 states have internal predecessors, (2709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:22,392 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 325.0) internal successors, (5525), 17 states have internal predecessors, (5525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:22,394 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 325.0) internal successors, (5525), 17 states have internal predecessors, (5525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:22,394 INFO L175 Difference]: Start difference. First operand has 47 places, 44 transitions, 148 flow. Second operand 16 states and 2709 transitions. [2023-08-30 08:24:22,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 291 transitions, 1546 flow [2023-08-30 08:24:22,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 291 transitions, 1539 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:24:22,402 INFO L231 Difference]: Finished difference. Result has 66 places, 82 transitions, 449 flow [2023-08-30 08:24:22,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=449, PETRI_PLACES=66, PETRI_TRANSITIONS=82} [2023-08-30 08:24:22,403 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 24 predicate places. [2023-08-30 08:24:22,403 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 82 transitions, 449 flow [2023-08-30 08:24:22,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 155.7) internal successors, (1557), 10 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:22,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:24:22,404 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:24:22,416 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 08:24:22,610 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 08:24:22,610 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 08:24:22,611 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:24:22,611 INFO L85 PathProgramCache]: Analyzing trace with hash 657361594, now seen corresponding path program 1 times [2023-08-30 08:24:22,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:24:22,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696135844] [2023-08-30 08:24:22,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:24:22,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:24:22,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:24:22,692 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 08:24:22,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:24:22,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696135844] [2023-08-30 08:24:22,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696135844] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:24:22,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:24:22,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 08:24:22,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132411929] [2023-08-30 08:24:22,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:24:22,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:24:22,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:24:22,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:24:22,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:24:22,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 325 [2023-08-30 08:24:22,708 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 82 transitions, 449 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 08:24:22,708 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:24:22,708 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 325 [2023-08-30 08:24:22,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:24:22,965 INFO L130 PetriNetUnfolder]: 1681/3028 cut-off events. [2023-08-30 08:24:22,965 INFO L131 PetriNetUnfolder]: For 2727/2727 co-relation queries the response was YES. [2023-08-30 08:24:22,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8789 conditions, 3028 events. 1681/3028 cut-off events. For 2727/2727 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 16659 event pairs, 301 based on Foata normal form. 288/3166 useless extension candidates. Maximal degree in co-relation 8051. Up to 2344 conditions per place. [2023-08-30 08:24:22,980 INFO L137 encePairwiseOnDemand]: 318/325 looper letters, 59 selfloop transitions, 9 changer transitions 0/68 dead transitions. [2023-08-30 08:24:22,981 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 68 transitions, 463 flow [2023-08-30 08:24:22,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:24:22,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:24:22,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 515 transitions. [2023-08-30 08:24:22,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5282051282051282 [2023-08-30 08:24:22,983 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 515 transitions. [2023-08-30 08:24:22,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 515 transitions. [2023-08-30 08:24:22,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:24:22,984 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 515 transitions. [2023-08-30 08:24:22,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 171.66666666666666) internal successors, (515), 3 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:22,987 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:22,987 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:22,987 INFO L175 Difference]: Start difference. First operand has 66 places, 82 transitions, 449 flow. Second operand 3 states and 515 transitions. [2023-08-30 08:24:22,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 68 transitions, 463 flow [2023-08-30 08:24:23,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 68 transitions, 427 flow, removed 14 selfloop flow, removed 3 redundant places. [2023-08-30 08:24:23,005 INFO L231 Difference]: Finished difference. Result has 58 places, 57 transitions, 265 flow [2023-08-30 08:24:23,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=265, PETRI_PLACES=58, PETRI_TRANSITIONS=57} [2023-08-30 08:24:23,006 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 16 predicate places. [2023-08-30 08:24:23,006 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 57 transitions, 265 flow [2023-08-30 08:24:23,007 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 08:24:23,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:24:23,007 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:24:23,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 08:24:23,007 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 08:24:23,008 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:24:23,008 INFO L85 PathProgramCache]: Analyzing trace with hash -295807627, now seen corresponding path program 1 times [2023-08-30 08:24:23,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:24:23,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128513952] [2023-08-30 08:24:23,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:24:23,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:24:23,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:24:23,120 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 08:24:23,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:24:23,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128513952] [2023-08-30 08:24:23,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128513952] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:24:23,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762512310] [2023-08-30 08:24:23,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:24:23,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:24:23,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:24:23,123 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 08:24:23,125 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 08:24:23,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:24:23,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 08:24:23,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:24:23,256 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 08:24:23,257 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 08:24:23,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762512310] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:24:23,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 08:24:23,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-30 08:24:23,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394967799] [2023-08-30 08:24:23,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:24:23,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 08:24:23,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:24:23,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 08:24:23,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 08:24:23,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 325 [2023-08-30 08:24:23,294 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 57 transitions, 265 flow. Second operand has 5 states, 5 states have (on average 155.2) internal successors, (776), 5 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:23,294 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:24:23,295 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 325 [2023-08-30 08:24:23,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:24:23,642 INFO L130 PetriNetUnfolder]: 1723/3178 cut-off events. [2023-08-30 08:24:23,643 INFO L131 PetriNetUnfolder]: For 2212/2212 co-relation queries the response was YES. [2023-08-30 08:24:23,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9131 conditions, 3178 events. 1723/3178 cut-off events. For 2212/2212 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 16868 event pairs, 375 based on Foata normal form. 126/3132 useless extension candidates. Maximal degree in co-relation 8134. Up to 1602 conditions per place. [2023-08-30 08:24:23,673 INFO L137 encePairwiseOnDemand]: 315/325 looper letters, 96 selfloop transitions, 18 changer transitions 0/115 dead transitions. [2023-08-30 08:24:23,674 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 115 transitions, 722 flow [2023-08-30 08:24:23,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 08:24:23,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 08:24:23,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1014 transitions. [2023-08-30 08:24:23,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.52 [2023-08-30 08:24:23,677 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1014 transitions. [2023-08-30 08:24:23,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1014 transitions. [2023-08-30 08:24:23,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:24:23,678 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1014 transitions. [2023-08-30 08:24:23,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 169.0) internal successors, (1014), 6 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:23,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 325.0) internal successors, (2275), 7 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:23,683 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 325.0) internal successors, (2275), 7 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:23,683 INFO L175 Difference]: Start difference. First operand has 58 places, 57 transitions, 265 flow. Second operand 6 states and 1014 transitions. [2023-08-30 08:24:23,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 115 transitions, 722 flow [2023-08-30 08:24:23,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 115 transitions, 703 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:24:23,688 INFO L231 Difference]: Finished difference. Result has 65 places, 57 transitions, 344 flow [2023-08-30 08:24:23,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=344, PETRI_PLACES=65, PETRI_TRANSITIONS=57} [2023-08-30 08:24:23,689 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 23 predicate places. [2023-08-30 08:24:23,689 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 57 transitions, 344 flow [2023-08-30 08:24:23,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 155.2) internal successors, (776), 5 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:23,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:24:23,690 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:24:23,698 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-30 08:24:23,895 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 08:24:23,898 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:24:23,899 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:24:23,899 INFO L85 PathProgramCache]: Analyzing trace with hash 181119708, now seen corresponding path program 1 times [2023-08-30 08:24:23,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:24:23,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258492643] [2023-08-30 08:24:23,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:24:23,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:24:23,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:24:23,954 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 08:24:23,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:24:23,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258492643] [2023-08-30 08:24:23,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258492643] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:24:23,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:24:23,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 08:24:23,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817654486] [2023-08-30 08:24:23,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:24:23,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 08:24:23,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:24:23,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 08:24:23,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 08:24:23,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 325 [2023-08-30 08:24:23,976 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 57 transitions, 344 flow. Second operand has 4 states, 4 states have (on average 155.5) internal successors, (622), 4 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:23,976 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:24:23,976 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 325 [2023-08-30 08:24:23,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:24:24,236 INFO L130 PetriNetUnfolder]: 1487/2768 cut-off events. [2023-08-30 08:24:24,236 INFO L131 PetriNetUnfolder]: For 2789/2789 co-relation queries the response was YES. [2023-08-30 08:24:24,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8270 conditions, 2768 events. 1487/2768 cut-off events. For 2789/2789 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 14610 event pairs, 456 based on Foata normal form. 18/2618 useless extension candidates. Maximal degree in co-relation 7536. Up to 2191 conditions per place. [2023-08-30 08:24:24,251 INFO L137 encePairwiseOnDemand]: 320/325 looper letters, 70 selfloop transitions, 4 changer transitions 6/81 dead transitions. [2023-08-30 08:24:24,251 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 81 transitions, 578 flow [2023-08-30 08:24:24,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 08:24:24,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 08:24:24,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 668 transitions. [2023-08-30 08:24:24,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5138461538461538 [2023-08-30 08:24:24,254 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 668 transitions. [2023-08-30 08:24:24,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 668 transitions. [2023-08-30 08:24:24,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:24:24,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 668 transitions. [2023-08-30 08:24:24,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:24,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 325.0) internal successors, (1625), 5 states have internal predecessors, (1625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:24,259 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 325.0) internal successors, (1625), 5 states have internal predecessors, (1625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:24,259 INFO L175 Difference]: Start difference. First operand has 65 places, 57 transitions, 344 flow. Second operand 4 states and 668 transitions. [2023-08-30 08:24:24,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 81 transitions, 578 flow [2023-08-30 08:24:24,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 81 transitions, 567 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-08-30 08:24:24,269 INFO L231 Difference]: Finished difference. Result has 68 places, 57 transitions, 343 flow [2023-08-30 08:24:24,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=343, PETRI_PLACES=68, PETRI_TRANSITIONS=57} [2023-08-30 08:24:24,271 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 26 predicate places. [2023-08-30 08:24:24,271 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 57 transitions, 343 flow [2023-08-30 08:24:24,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 155.5) internal successors, (622), 4 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:24,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:24:24,272 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-08-30 08:24:24,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 08:24:24,272 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 08:24:24,272 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:24:24,273 INFO L85 PathProgramCache]: Analyzing trace with hash 868540394, now seen corresponding path program 1 times [2023-08-30 08:24:24,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:24:24,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944524776] [2023-08-30 08:24:24,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:24:24,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:24:24,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:24:24,333 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 08:24:24,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:24:24,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944524776] [2023-08-30 08:24:24,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944524776] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:24:24,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:24:24,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:24:24,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107894106] [2023-08-30 08:24:24,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:24:24,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:24:24,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:24:24,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:24:24,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:24:24,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 325 [2023-08-30 08:24:24,342 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 57 transitions, 343 flow. Second operand has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:24,342 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:24:24,343 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 325 [2023-08-30 08:24:24,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:24:24,585 INFO L130 PetriNetUnfolder]: 1346/2491 cut-off events. [2023-08-30 08:24:24,585 INFO L131 PetriNetUnfolder]: For 2591/2595 co-relation queries the response was YES. [2023-08-30 08:24:24,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7593 conditions, 2491 events. 1346/2491 cut-off events. For 2591/2595 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 13002 event pairs, 349 based on Foata normal form. 4/2383 useless extension candidates. Maximal degree in co-relation 7096. Up to 2399 conditions per place. [2023-08-30 08:24:24,596 INFO L137 encePairwiseOnDemand]: 323/325 looper letters, 67 selfloop transitions, 1 changer transitions 1/70 dead transitions. [2023-08-30 08:24:24,596 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 70 transitions, 534 flow [2023-08-30 08:24:24,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:24:24,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:24:24,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 520 transitions. [2023-08-30 08:24:24,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2023-08-30 08:24:24,599 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 520 transitions. [2023-08-30 08:24:24,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 520 transitions. [2023-08-30 08:24:24,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:24:24,599 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 520 transitions. [2023-08-30 08:24:24,600 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 08:24:24,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:24,603 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:24,603 INFO L175 Difference]: Start difference. First operand has 68 places, 57 transitions, 343 flow. Second operand 3 states and 520 transitions. [2023-08-30 08:24:24,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 70 transitions, 534 flow [2023-08-30 08:24:24,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 70 transitions, 531 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:24:24,609 INFO L231 Difference]: Finished difference. Result has 68 places, 56 transitions, 337 flow [2023-08-30 08:24:24,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=337, PETRI_PLACES=68, PETRI_TRANSITIONS=56} [2023-08-30 08:24:24,610 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 26 predicate places. [2023-08-30 08:24:24,610 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 56 transitions, 337 flow [2023-08-30 08:24:24,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:24,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:24:24,611 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-08-30 08:24:24,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 08:24:24,611 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:24:24,612 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:24:24,612 INFO L85 PathProgramCache]: Analyzing trace with hash 868540395, now seen corresponding path program 1 times [2023-08-30 08:24:24,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:24:24,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638139748] [2023-08-30 08:24:24,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:24:24,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:24:24,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:24:24,659 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 08:24:24,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:24:24,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638139748] [2023-08-30 08:24:24,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638139748] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:24:24,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:24:24,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:24:24,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656434215] [2023-08-30 08:24:24,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:24:24,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:24:24,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:24:24,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:24:24,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:24:24,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 325 [2023-08-30 08:24:24,668 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 56 transitions, 337 flow. Second operand has 3 states, 3 states have (on average 162.33333333333334) internal successors, (487), 3 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:24,668 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:24:24,669 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 325 [2023-08-30 08:24:24,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:24:24,917 INFO L130 PetriNetUnfolder]: 1212/2205 cut-off events. [2023-08-30 08:24:24,917 INFO L131 PetriNetUnfolder]: For 2470/2474 co-relation queries the response was YES. [2023-08-30 08:24:24,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6745 conditions, 2205 events. 1212/2205 cut-off events. For 2470/2474 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 10943 event pairs, 543 based on Foata normal form. 4/2153 useless extension candidates. Maximal degree in co-relation 4763. Up to 1177 conditions per place. [2023-08-30 08:24:24,930 INFO L137 encePairwiseOnDemand]: 321/325 looper letters, 63 selfloop transitions, 4 changer transitions 2/70 dead transitions. [2023-08-30 08:24:24,930 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 70 transitions, 531 flow [2023-08-30 08:24:24,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:24:24,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:24:24,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 517 transitions. [2023-08-30 08:24:24,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5302564102564102 [2023-08-30 08:24:24,932 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 517 transitions. [2023-08-30 08:24:24,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 517 transitions. [2023-08-30 08:24:24,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:24:24,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 517 transitions. [2023-08-30 08:24:24,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.33333333333334) internal successors, (517), 3 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:24,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:24,937 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:24,937 INFO L175 Difference]: Start difference. First operand has 68 places, 56 transitions, 337 flow. Second operand 3 states and 517 transitions. [2023-08-30 08:24:24,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 70 transitions, 531 flow [2023-08-30 08:24:24,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 70 transitions, 530 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:24:24,944 INFO L231 Difference]: Finished difference. Result has 69 places, 55 transitions, 342 flow [2023-08-30 08:24:24,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=331, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=342, PETRI_PLACES=69, PETRI_TRANSITIONS=55} [2023-08-30 08:24:24,945 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 27 predicate places. [2023-08-30 08:24:24,945 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 55 transitions, 342 flow [2023-08-30 08:24:24,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 162.33333333333334) internal successors, (487), 3 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:24,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:24:24,946 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 08:24:24,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 08:24:24,946 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 08:24:24,946 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:24:24,947 INFO L85 PathProgramCache]: Analyzing trace with hash -530979848, now seen corresponding path program 1 times [2023-08-30 08:24:24,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:24:24,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034895639] [2023-08-30 08:24:24,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:24:24,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:24:24,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:24:25,076 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 08:24:25,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:24:25,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034895639] [2023-08-30 08:24:25,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034895639] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:24:25,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456224633] [2023-08-30 08:24:25,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:24:25,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:24:25,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:24:25,078 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 08:24:25,108 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 08:24:25,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:24:25,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 08:24:25,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:24:25,243 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-30 08:24:25,243 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 08:24:25,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1456224633] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:24:25,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 08:24:25,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2023-08-30 08:24:25,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545523997] [2023-08-30 08:24:25,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:24:25,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 08:24:25,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:24:25,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 08:24:25,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-30 08:24:25,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 325 [2023-08-30 08:24:25,289 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 55 transitions, 342 flow. Second operand has 6 states, 6 states have (on average 150.83333333333334) internal successors, (905), 6 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:25,289 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:24:25,289 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 325 [2023-08-30 08:24:25,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:24:25,724 INFO L130 PetriNetUnfolder]: 1509/2704 cut-off events. [2023-08-30 08:24:25,724 INFO L131 PetriNetUnfolder]: For 3408/3408 co-relation queries the response was YES. [2023-08-30 08:24:25,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8527 conditions, 2704 events. 1509/2704 cut-off events. For 3408/3408 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 13349 event pairs, 351 based on Foata normal form. 34/2670 useless extension candidates. Maximal degree in co-relation 8033. Up to 1364 conditions per place. [2023-08-30 08:24:25,742 INFO L137 encePairwiseOnDemand]: 314/325 looper letters, 95 selfloop transitions, 30 changer transitions 0/126 dead transitions. [2023-08-30 08:24:25,743 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 126 transitions, 932 flow [2023-08-30 08:24:25,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 08:24:25,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 08:24:25,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1136 transitions. [2023-08-30 08:24:25,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49934065934065935 [2023-08-30 08:24:25,746 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1136 transitions. [2023-08-30 08:24:25,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1136 transitions. [2023-08-30 08:24:25,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:24:25,747 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1136 transitions. [2023-08-30 08:24:25,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 162.28571428571428) internal successors, (1136), 7 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:25,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 325.0) internal successors, (2600), 8 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:25,754 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 325.0) internal successors, (2600), 8 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:25,754 INFO L175 Difference]: Start difference. First operand has 69 places, 55 transitions, 342 flow. Second operand 7 states and 1136 transitions. [2023-08-30 08:24:25,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 126 transitions, 932 flow [2023-08-30 08:24:25,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 126 transitions, 905 flow, removed 8 selfloop flow, removed 3 redundant places. [2023-08-30 08:24:25,764 INFO L231 Difference]: Finished difference. Result has 74 places, 69 transitions, 567 flow [2023-08-30 08:24:25,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=567, PETRI_PLACES=74, PETRI_TRANSITIONS=69} [2023-08-30 08:24:25,764 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 32 predicate places. [2023-08-30 08:24:25,765 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 69 transitions, 567 flow [2023-08-30 08:24:25,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 150.83333333333334) internal successors, (905), 6 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:25,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:24:25,766 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 08:24:25,774 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 08:24:25,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:24:25,972 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 08:24:25,972 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:24:25,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1665666210, now seen corresponding path program 1 times [2023-08-30 08:24:25,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:24:25,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891141368] [2023-08-30 08:24:25,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:24:25,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:24:26,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:24:26,123 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 08:24:26,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:24:26,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891141368] [2023-08-30 08:24:26,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891141368] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:24:26,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648069779] [2023-08-30 08:24:26,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:24:26,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:24:26,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:24:26,126 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 08:24:26,135 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 08:24:26,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:24:26,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 08:24:26,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:24:26,303 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-30 08:24:26,303 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 08:24:26,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648069779] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:24:26,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 08:24:26,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2023-08-30 08:24:26,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088861755] [2023-08-30 08:24:26,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:24:26,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 08:24:26,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:24:26,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 08:24:26,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-08-30 08:24:26,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 325 [2023-08-30 08:24:26,354 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 69 transitions, 567 flow. Second operand has 6 states, 6 states have (on average 150.83333333333334) internal successors, (905), 6 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:26,354 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:24:26,354 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 325 [2023-08-30 08:24:26,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:24:26,856 INFO L130 PetriNetUnfolder]: 2065/3686 cut-off events. [2023-08-30 08:24:26,857 INFO L131 PetriNetUnfolder]: For 6714/6714 co-relation queries the response was YES. [2023-08-30 08:24:26,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11966 conditions, 3686 events. 2065/3686 cut-off events. For 6714/6714 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 18620 event pairs, 573 based on Foata normal form. 80/3674 useless extension candidates. Maximal degree in co-relation 11484. Up to 1752 conditions per place. [2023-08-30 08:24:26,880 INFO L137 encePairwiseOnDemand]: 314/325 looper letters, 121 selfloop transitions, 27 changer transitions 0/149 dead transitions. [2023-08-30 08:24:26,880 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 149 transitions, 1285 flow [2023-08-30 08:24:26,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 08:24:26,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 08:24:26,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1137 transitions. [2023-08-30 08:24:26,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4997802197802198 [2023-08-30 08:24:26,884 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1137 transitions. [2023-08-30 08:24:26,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1137 transitions. [2023-08-30 08:24:26,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:24:26,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1137 transitions. [2023-08-30 08:24:26,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 162.42857142857142) internal successors, (1137), 7 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:26,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 325.0) internal successors, (2600), 8 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:26,891 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 325.0) internal successors, (2600), 8 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:26,891 INFO L175 Difference]: Start difference. First operand has 74 places, 69 transitions, 567 flow. Second operand 7 states and 1137 transitions. [2023-08-30 08:24:26,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 149 transitions, 1285 flow [2023-08-30 08:24:26,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 149 transitions, 1219 flow, removed 33 selfloop flow, removed 0 redundant places. [2023-08-30 08:24:26,904 INFO L231 Difference]: Finished difference. Result has 86 places, 89 transitions, 855 flow [2023-08-30 08:24:26,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=525, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=855, PETRI_PLACES=86, PETRI_TRANSITIONS=89} [2023-08-30 08:24:26,905 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 44 predicate places. [2023-08-30 08:24:26,905 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 89 transitions, 855 flow [2023-08-30 08:24:26,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 150.83333333333334) internal successors, (905), 6 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:26,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:24:26,906 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1] [2023-08-30 08:24:26,913 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 08:24:27,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:24:27,112 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:24:27,112 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:24:27,112 INFO L85 PathProgramCache]: Analyzing trace with hash 2011874415, now seen corresponding path program 1 times [2023-08-30 08:24:27,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:24:27,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578606442] [2023-08-30 08:24:27,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:24:27,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:24:27,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:24:27,274 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 08:24:27,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:24:27,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578606442] [2023-08-30 08:24:27,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578606442] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:24:27,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636593747] [2023-08-30 08:24:27,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:24:27,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:24:27,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:24:27,277 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 08:24:27,279 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 08:24:27,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:24:27,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 08:24:27,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:24:27,449 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 08:24:27,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:24:27,539 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 08:24:27,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636593747] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:24:27,539 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:24:27,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-08-30 08:24:27,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063633966] [2023-08-30 08:24:27,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:24:27,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-30 08:24:27,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:24:27,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-30 08:24:27,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-08-30 08:24:27,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 325 [2023-08-30 08:24:27,631 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 89 transitions, 855 flow. Second operand has 18 states, 18 states have (on average 156.05555555555554) internal successors, (2809), 18 states have internal predecessors, (2809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:27,631 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:24:27,631 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 325 [2023-08-30 08:24:27,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:24:28,537 INFO L130 PetriNetUnfolder]: 3297/5908 cut-off events. [2023-08-30 08:24:28,537 INFO L131 PetriNetUnfolder]: For 10916/10916 co-relation queries the response was YES. [2023-08-30 08:24:28,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19632 conditions, 5908 events. 3297/5908 cut-off events. For 10916/10916 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 30118 event pairs, 841 based on Foata normal form. 144/5900 useless extension candidates. Maximal degree in co-relation 18862. Up to 2280 conditions per place. [2023-08-30 08:24:28,584 INFO L137 encePairwiseOnDemand]: 315/325 looper letters, 293 selfloop transitions, 41 changer transitions 2/337 dead transitions. [2023-08-30 08:24:28,584 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 337 transitions, 2647 flow [2023-08-30 08:24:28,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-30 08:24:28,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-30 08:24:28,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 3168 transitions. [2023-08-30 08:24:28,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5130364372469636 [2023-08-30 08:24:28,593 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 3168 transitions. [2023-08-30 08:24:28,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 3168 transitions. [2023-08-30 08:24:28,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:24:28,595 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 3168 transitions. [2023-08-30 08:24:28,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 166.73684210526315) internal successors, (3168), 19 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:28,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 325.0) internal successors, (6500), 20 states have internal predecessors, (6500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:28,617 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 325.0) internal successors, (6500), 20 states have internal predecessors, (6500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:28,618 INFO L175 Difference]: Start difference. First operand has 86 places, 89 transitions, 855 flow. Second operand 19 states and 3168 transitions. [2023-08-30 08:24:28,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 337 transitions, 2647 flow [2023-08-30 08:24:28,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 337 transitions, 2629 flow, removed 9 selfloop flow, removed 0 redundant places. [2023-08-30 08:24:28,652 INFO L231 Difference]: Finished difference. Result has 109 places, 108 transitions, 1189 flow [2023-08-30 08:24:28,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=837, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1189, PETRI_PLACES=109, PETRI_TRANSITIONS=108} [2023-08-30 08:24:28,653 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 67 predicate places. [2023-08-30 08:24:28,653 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 108 transitions, 1189 flow [2023-08-30 08:24:28,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 156.05555555555554) internal successors, (2809), 18 states have internal predecessors, (2809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:28,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:24:28,655 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 08:24:28,661 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 08:24:28,861 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,SelfDestructingSolverStorable13 [2023-08-30 08:24:28,861 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:24:28,861 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:24:28,861 INFO L85 PathProgramCache]: Analyzing trace with hash -503819008, now seen corresponding path program 2 times [2023-08-30 08:24:28,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:24:28,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756942513] [2023-08-30 08:24:28,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:24:28,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:24:28,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:24:29,022 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-30 08:24:29,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:24:29,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756942513] [2023-08-30 08:24:29,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756942513] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:24:29,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104113983] [2023-08-30 08:24:29,023 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 08:24:29,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:24:29,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:24:29,024 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 08:24:29,049 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 08:24:29,164 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 08:24:29,165 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 08:24:29,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 08:24:29,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:24:29,226 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-30 08:24:29,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:24:29,313 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-30 08:24:29,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104113983] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:24:29,313 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:24:29,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2023-08-30 08:24:29,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876480725] [2023-08-30 08:24:29,314 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:24:29,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 08:24:29,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:24:29,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 08:24:29,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2023-08-30 08:24:29,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 325 [2023-08-30 08:24:29,421 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 108 transitions, 1189 flow. Second operand has 16 states, 16 states have (on average 150.625) internal successors, (2410), 16 states have internal predecessors, (2410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:29,421 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:24:29,421 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 325 [2023-08-30 08:24:29,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:24:30,493 INFO L130 PetriNetUnfolder]: 4341/7764 cut-off events. [2023-08-30 08:24:30,493 INFO L131 PetriNetUnfolder]: For 18872/18872 co-relation queries the response was YES. [2023-08-30 08:24:30,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26411 conditions, 7764 events. 4341/7764 cut-off events. For 18872/18872 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 42233 event pairs, 893 based on Foata normal form. 144/7708 useless extension candidates. Maximal degree in co-relation 25537. Up to 2037 conditions per place. [2023-08-30 08:24:30,552 INFO L137 encePairwiseOnDemand]: 314/325 looper letters, 211 selfloop transitions, 98 changer transitions 2/312 dead transitions. [2023-08-30 08:24:30,553 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 312 transitions, 2858 flow [2023-08-30 08:24:30,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-30 08:24:30,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-30 08:24:30,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3146 transitions. [2023-08-30 08:24:30,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.484 [2023-08-30 08:24:30,560 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3146 transitions. [2023-08-30 08:24:30,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3146 transitions. [2023-08-30 08:24:30,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:24:30,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3146 transitions. [2023-08-30 08:24:30,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 157.3) internal successors, (3146), 20 states have internal predecessors, (3146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:30,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 325.0) internal successors, (6825), 21 states have internal predecessors, (6825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:30,577 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 325.0) internal successors, (6825), 21 states have internal predecessors, (6825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:30,577 INFO L175 Difference]: Start difference. First operand has 109 places, 108 transitions, 1189 flow. Second operand 20 states and 3146 transitions. [2023-08-30 08:24:30,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 312 transitions, 2858 flow [2023-08-30 08:24:30,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 312 transitions, 2747 flow, removed 45 selfloop flow, removed 5 redundant places. [2023-08-30 08:24:30,631 INFO L231 Difference]: Finished difference. Result has 126 places, 144 transitions, 1811 flow [2023-08-30 08:24:30,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=1025, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1811, PETRI_PLACES=126, PETRI_TRANSITIONS=144} [2023-08-30 08:24:30,632 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 84 predicate places. [2023-08-30 08:24:30,632 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 144 transitions, 1811 flow [2023-08-30 08:24:30,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 150.625) internal successors, (2410), 16 states have internal predecessors, (2410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:30,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:24:30,633 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:24:30,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 08:24:30,840 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,SelfDestructingSolverStorable14 [2023-08-30 08:24:30,840 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:24:30,840 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:24:30,840 INFO L85 PathProgramCache]: Analyzing trace with hash 164327617, now seen corresponding path program 1 times [2023-08-30 08:24:30,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:24:30,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369229653] [2023-08-30 08:24:30,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:24:30,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:24:30,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:24:31,010 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:24:31,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:24:31,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369229653] [2023-08-30 08:24:31,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369229653] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:24:31,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709732607] [2023-08-30 08:24:31,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:24:31,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:24:31,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:24:31,013 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 08:24:31,023 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 08:24:31,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:24:31,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 08:24:31,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:24:31,193 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:24:31,194 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:24:31,286 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:24:31,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709732607] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:24:31,286 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:24:31,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 14 [2023-08-30 08:24:31,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454784681] [2023-08-30 08:24:31,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:24:31,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 08:24:31,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:24:31,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 08:24:31,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2023-08-30 08:24:31,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 325 [2023-08-30 08:24:31,433 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 144 transitions, 1811 flow. Second operand has 16 states, 16 states have (on average 151.25) internal successors, (2420), 16 states have internal predecessors, (2420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:31,433 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:24:31,433 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 325 [2023-08-30 08:24:31,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:24:32,548 INFO L130 PetriNetUnfolder]: 4747/8524 cut-off events. [2023-08-30 08:24:32,548 INFO L131 PetriNetUnfolder]: For 21535/21535 co-relation queries the response was YES. [2023-08-30 08:24:32,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29336 conditions, 8524 events. 4747/8524 cut-off events. For 21535/21535 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 48040 event pairs, 905 based on Foata normal form. 102/8402 useless extension candidates. Maximal degree in co-relation 28468. Up to 4230 conditions per place. [2023-08-30 08:24:32,605 INFO L137 encePairwiseOnDemand]: 315/325 looper letters, 166 selfloop transitions, 121 changer transitions 2/290 dead transitions. [2023-08-30 08:24:32,606 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 290 transitions, 2998 flow [2023-08-30 08:24:32,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-30 08:24:32,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-30 08:24:32,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2963 transitions. [2023-08-30 08:24:32,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47983805668016194 [2023-08-30 08:24:32,610 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2963 transitions. [2023-08-30 08:24:32,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2963 transitions. [2023-08-30 08:24:32,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:24:32,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2963 transitions. [2023-08-30 08:24:32,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 155.94736842105263) internal successors, (2963), 19 states have internal predecessors, (2963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:32,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 325.0) internal successors, (6500), 20 states have internal predecessors, (6500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:32,624 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 325.0) internal successors, (6500), 20 states have internal predecessors, (6500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:32,624 INFO L175 Difference]: Start difference. First operand has 126 places, 144 transitions, 1811 flow. Second operand 19 states and 2963 transitions. [2023-08-30 08:24:32,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 290 transitions, 2998 flow [2023-08-30 08:24:32,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 290 transitions, 2792 flow, removed 71 selfloop flow, removed 5 redundant places. [2023-08-30 08:24:32,709 INFO L231 Difference]: Finished difference. Result has 135 places, 159 transitions, 2008 flow [2023-08-30 08:24:32,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=1490, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2008, PETRI_PLACES=135, PETRI_TRANSITIONS=159} [2023-08-30 08:24:32,710 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 93 predicate places. [2023-08-30 08:24:32,710 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 159 transitions, 2008 flow [2023-08-30 08:24:32,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 151.25) internal successors, (2420), 16 states have internal predecessors, (2420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:32,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:24:32,711 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:24:32,717 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 08:24:32,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:24:32,917 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:24:32,918 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:24:32,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1963966512, now seen corresponding path program 1 times [2023-08-30 08:24:32,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:24:32,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762217890] [2023-08-30 08:24:32,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:24:32,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:24:32,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:24:33,162 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 08:24:33,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:24:33,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762217890] [2023-08-30 08:24:33,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762217890] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:24:33,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218091755] [2023-08-30 08:24:33,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:24:33,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:24:33,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:24:33,165 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:24:33,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 08:24:33,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:24:33,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 08:24:33,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:24:33,352 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 08:24:33,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:24:33,492 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 08:24:33,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1218091755] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:24:33,492 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:24:33,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 19 [2023-08-30 08:24:33,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259596219] [2023-08-30 08:24:33,493 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:24:33,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-30 08:24:33,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:24:33,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-30 08:24:33,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2023-08-30 08:24:33,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 325 [2023-08-30 08:24:33,624 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 159 transitions, 2008 flow. Second operand has 21 states, 21 states have (on average 146.95238095238096) internal successors, (3086), 21 states have internal predecessors, (3086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:33,624 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:24:33,624 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 325 [2023-08-30 08:24:33,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:24:34,655 INFO L130 PetriNetUnfolder]: 4709/8480 cut-off events. [2023-08-30 08:24:34,655 INFO L131 PetriNetUnfolder]: For 19934/19934 co-relation queries the response was YES. [2023-08-30 08:24:34,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29128 conditions, 8480 events. 4709/8480 cut-off events. For 19934/19934 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 48055 event pairs, 933 based on Foata normal form. 42/8298 useless extension candidates. Maximal degree in co-relation 28241. Up to 4602 conditions per place. [2023-08-30 08:24:34,700 INFO L137 encePairwiseOnDemand]: 315/325 looper letters, 86 selfloop transitions, 114 changer transitions 15/216 dead transitions. [2023-08-30 08:24:34,700 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 216 transitions, 2522 flow [2023-08-30 08:24:34,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 08:24:34,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 08:24:34,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1661 transitions. [2023-08-30 08:24:34,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4646153846153846 [2023-08-30 08:24:34,702 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1661 transitions. [2023-08-30 08:24:34,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1661 transitions. [2023-08-30 08:24:34,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:24:34,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1661 transitions. [2023-08-30 08:24:34,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 151.0) internal successors, (1661), 11 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:34,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 325.0) internal successors, (3900), 12 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:34,709 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 325.0) internal successors, (3900), 12 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:34,709 INFO L175 Difference]: Start difference. First operand has 135 places, 159 transitions, 2008 flow. Second operand 11 states and 1661 transitions. [2023-08-30 08:24:34,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 216 transitions, 2522 flow [2023-08-30 08:24:34,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 216 transitions, 2078 flow, removed 86 selfloop flow, removed 13 redundant places. [2023-08-30 08:24:34,775 INFO L231 Difference]: Finished difference. Result has 127 places, 151 transitions, 1643 flow [2023-08-30 08:24:34,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=1416, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1643, PETRI_PLACES=127, PETRI_TRANSITIONS=151} [2023-08-30 08:24:34,776 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 85 predicate places. [2023-08-30 08:24:34,776 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 151 transitions, 1643 flow [2023-08-30 08:24:34,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 146.95238095238096) internal successors, (3086), 21 states have internal predecessors, (3086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:34,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:24:34,777 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 08:24:34,788 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-30 08:24:34,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-30 08:24:34,983 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 08:24:34,984 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:24:34,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1500469948, now seen corresponding path program 3 times [2023-08-30 08:24:34,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:24:34,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373563771] [2023-08-30 08:24:34,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:24:34,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:24:35,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:24:35,241 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 08:24:35,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:24:35,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373563771] [2023-08-30 08:24:35,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373563771] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:24:35,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55997751] [2023-08-30 08:24:35,242 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 08:24:35,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:24:35,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:24:35,244 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:24:35,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-30 08:24:35,439 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-08-30 08:24:35,440 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 08:24:35,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-30 08:24:35,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:24:35,526 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 08:24:35,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:24:35,665 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 08:24:35,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55997751] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:24:35,665 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:24:35,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-08-30 08:24:35,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126401466] [2023-08-30 08:24:35,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:24:35,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-30 08:24:35,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:24:35,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-30 08:24:35,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2023-08-30 08:24:35,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 325 [2023-08-30 08:24:35,782 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 151 transitions, 1643 flow. Second operand has 20 states, 20 states have (on average 151.9) internal successors, (3038), 20 states have internal predecessors, (3038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:35,782 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:24:35,783 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 325 [2023-08-30 08:24:35,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:24:37,169 INFO L130 PetriNetUnfolder]: 5496/9773 cut-off events. [2023-08-30 08:24:37,169 INFO L131 PetriNetUnfolder]: For 20138/20138 co-relation queries the response was YES. [2023-08-30 08:24:37,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33090 conditions, 9773 events. 5496/9773 cut-off events. For 20138/20138 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 53426 event pairs, 883 based on Foata normal form. 90/9655 useless extension candidates. Maximal degree in co-relation 32222. Up to 2045 conditions per place. [2023-08-30 08:24:37,249 INFO L137 encePairwiseOnDemand]: 317/325 looper letters, 272 selfloop transitions, 166 changer transitions 7/446 dead transitions. [2023-08-30 08:24:37,249 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 446 transitions, 4204 flow [2023-08-30 08:24:37,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-30 08:24:37,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-30 08:24:37,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3797 transitions. [2023-08-30 08:24:37,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4867948717948718 [2023-08-30 08:24:37,254 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3797 transitions. [2023-08-30 08:24:37,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3797 transitions. [2023-08-30 08:24:37,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:24:37,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3797 transitions. [2023-08-30 08:24:37,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 158.20833333333334) internal successors, (3797), 24 states have internal predecessors, (3797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:37,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 325.0) internal successors, (8125), 25 states have internal predecessors, (8125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:37,267 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 325.0) internal successors, (8125), 25 states have internal predecessors, (8125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:37,268 INFO L175 Difference]: Start difference. First operand has 127 places, 151 transitions, 1643 flow. Second operand 24 states and 3797 transitions. [2023-08-30 08:24:37,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 446 transitions, 4204 flow [2023-08-30 08:24:37,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 446 transitions, 3943 flow, removed 11 selfloop flow, removed 8 redundant places. [2023-08-30 08:24:37,337 INFO L231 Difference]: Finished difference. Result has 144 places, 225 transitions, 2701 flow [2023-08-30 08:24:37,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=1496, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2701, PETRI_PLACES=144, PETRI_TRANSITIONS=225} [2023-08-30 08:24:37,337 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 102 predicate places. [2023-08-30 08:24:37,338 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 225 transitions, 2701 flow [2023-08-30 08:24:37,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 151.9) internal successors, (3038), 20 states have internal predecessors, (3038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:37,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:24:37,338 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1] [2023-08-30 08:24:37,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-30 08:24:37,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-30 08:24:37,546 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:24:37,546 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:24:37,546 INFO L85 PathProgramCache]: Analyzing trace with hash 442284519, now seen corresponding path program 2 times [2023-08-30 08:24:37,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:24:37,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363125779] [2023-08-30 08:24:37,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:24:37,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:24:37,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:24:37,937 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:24:37,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:24:37,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363125779] [2023-08-30 08:24:37,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363125779] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:24:37,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253500329] [2023-08-30 08:24:37,938 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 08:24:37,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:24:37,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:24:37,939 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:24:37,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-30 08:24:38,137 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 08:24:38,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 08:24:38,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-30 08:24:38,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:24:38,252 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:24:38,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:24:38,528 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:24:38,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253500329] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:24:38,528 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:24:38,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2023-08-30 08:24:38,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960151158] [2023-08-30 08:24:38,529 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:24:38,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-08-30 08:24:38,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:24:38,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-08-30 08:24:38,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2023-08-30 08:24:38,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 325 [2023-08-30 08:24:38,708 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 225 transitions, 2701 flow. Second operand has 34 states, 34 states have (on average 156.02941176470588) internal successors, (5305), 34 states have internal predecessors, (5305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:38,709 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:24:38,709 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 325 [2023-08-30 08:24:38,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:24:40,887 INFO L130 PetriNetUnfolder]: 7580/13517 cut-off events. [2023-08-30 08:24:40,887 INFO L131 PetriNetUnfolder]: For 37872/37872 co-relation queries the response was YES. [2023-08-30 08:24:40,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46887 conditions, 13517 events. 7580/13517 cut-off events. For 37872/37872 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 72591 event pairs, 1885 based on Foata normal form. 168/13397 useless extension candidates. Maximal degree in co-relation 45418. Up to 6177 conditions per place. [2023-08-30 08:24:40,957 INFO L137 encePairwiseOnDemand]: 318/325 looper letters, 583 selfloop transitions, 98 changer transitions 0/682 dead transitions. [2023-08-30 08:24:40,957 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 682 transitions, 6312 flow [2023-08-30 08:24:40,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-08-30 08:24:40,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-08-30 08:24:40,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 5489 transitions. [2023-08-30 08:24:40,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5117948717948718 [2023-08-30 08:24:40,966 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 5489 transitions. [2023-08-30 08:24:40,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 5489 transitions. [2023-08-30 08:24:40,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:24:40,968 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 5489 transitions. [2023-08-30 08:24:40,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 166.33333333333334) internal successors, (5489), 33 states have internal predecessors, (5489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:40,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 325.0) internal successors, (11050), 34 states have internal predecessors, (11050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:40,986 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 325.0) internal successors, (11050), 34 states have internal predecessors, (11050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:40,987 INFO L175 Difference]: Start difference. First operand has 144 places, 225 transitions, 2701 flow. Second operand 33 states and 5489 transitions. [2023-08-30 08:24:40,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 682 transitions, 6312 flow [2023-08-30 08:24:41,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 682 transitions, 6181 flow, removed 37 selfloop flow, removed 7 redundant places. [2023-08-30 08:24:41,101 INFO L231 Difference]: Finished difference. Result has 177 places, 261 transitions, 3354 flow [2023-08-30 08:24:41,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=2576, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=3354, PETRI_PLACES=177, PETRI_TRANSITIONS=261} [2023-08-30 08:24:41,102 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 135 predicate places. [2023-08-30 08:24:41,102 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 261 transitions, 3354 flow [2023-08-30 08:24:41,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 156.02941176470588) internal successors, (5305), 34 states have internal predecessors, (5305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:41,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:24:41,104 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 08:24:41,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-30 08:24:41,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:24:41,316 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:24:41,316 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:24:41,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1080399752, now seen corresponding path program 4 times [2023-08-30 08:24:41,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:24:41,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497758262] [2023-08-30 08:24:41,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:24:41,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:24:41,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:24:41,677 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 08:24:41,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:24:41,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497758262] [2023-08-30 08:24:41,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497758262] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:24:41,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817539402] [2023-08-30 08:24:41,678 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 08:24:41,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:24:41,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:24:41,679 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:24:41,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-30 08:24:41,862 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 08:24:41,862 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 08:24:41,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 560 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-30 08:24:41,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:24:41,974 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 08:24:41,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:24:42,184 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 08:24:42,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817539402] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:24:42,184 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:24:42,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 26 [2023-08-30 08:24:42,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338632817] [2023-08-30 08:24:42,184 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:24:42,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-08-30 08:24:42,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:24:42,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-08-30 08:24:42,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=569, Unknown=0, NotChecked=0, Total=756 [2023-08-30 08:24:42,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 325 [2023-08-30 08:24:42,352 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 261 transitions, 3354 flow. Second operand has 28 states, 28 states have (on average 151.64285714285714) internal successors, (4246), 28 states have internal predecessors, (4246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:42,352 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:24:42,352 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 325 [2023-08-30 08:24:42,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:24:45,336 INFO L130 PetriNetUnfolder]: 10380/18473 cut-off events. [2023-08-30 08:24:45,336 INFO L131 PetriNetUnfolder]: For 54270/54270 co-relation queries the response was YES. [2023-08-30 08:24:45,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64274 conditions, 18473 events. 10380/18473 cut-off events. For 54270/54270 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 105620 event pairs, 1355 based on Foata normal form. 160/18241 useless extension candidates. Maximal degree in co-relation 62601. Up to 3845 conditions per place. [2023-08-30 08:24:45,460 INFO L137 encePairwiseOnDemand]: 317/325 looper letters, 394 selfloop transitions, 306 changer transitions 10/711 dead transitions. [2023-08-30 08:24:45,460 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 711 transitions, 7443 flow [2023-08-30 08:24:45,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-08-30 08:24:45,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-08-30 08:24:45,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 5533 transitions. [2023-08-30 08:24:45,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48641758241758243 [2023-08-30 08:24:45,469 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 5533 transitions. [2023-08-30 08:24:45,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 5533 transitions. [2023-08-30 08:24:45,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:24:45,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 5533 transitions. [2023-08-30 08:24:45,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 158.0857142857143) internal successors, (5533), 35 states have internal predecessors, (5533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:45,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 325.0) internal successors, (11700), 36 states have internal predecessors, (11700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:45,491 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 325.0) internal successors, (11700), 36 states have internal predecessors, (11700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:45,491 INFO L175 Difference]: Start difference. First operand has 177 places, 261 transitions, 3354 flow. Second operand 35 states and 5533 transitions. [2023-08-30 08:24:45,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 711 transitions, 7443 flow [2023-08-30 08:24:45,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 711 transitions, 7141 flow, removed 90 selfloop flow, removed 11 redundant places. [2023-08-30 08:24:45,753 INFO L231 Difference]: Finished difference. Result has 210 places, 379 transitions, 5379 flow [2023-08-30 08:24:45,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=3063, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=196, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=5379, PETRI_PLACES=210, PETRI_TRANSITIONS=379} [2023-08-30 08:24:45,754 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 168 predicate places. [2023-08-30 08:24:45,754 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 379 transitions, 5379 flow [2023-08-30 08:24:45,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 151.64285714285714) internal successors, (4246), 28 states have internal predecessors, (4246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:45,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:24:45,755 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:24:45,764 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-30 08:24:45,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:24:45,962 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:24:45,962 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:24:45,962 INFO L85 PathProgramCache]: Analyzing trace with hash -252758361, now seen corresponding path program 1 times [2023-08-30 08:24:45,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:24:45,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718877163] [2023-08-30 08:24:45,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:24:45,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:24:46,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:24:46,331 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 08:24:46,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:24:46,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718877163] [2023-08-30 08:24:46,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718877163] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:24:46,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111462144] [2023-08-30 08:24:46,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:24:46,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:24:46,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:24:46,347 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:24:46,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-30 08:24:46,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:24:46,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-30 08:24:46,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:24:46,637 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 08:24:46,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:24:46,808 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 08:24:46,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111462144] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:24:46,808 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:24:46,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 24 [2023-08-30 08:24:46,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131337322] [2023-08-30 08:24:46,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:24:46,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-30 08:24:46,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:24:46,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-30 08:24:46,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=504, Unknown=0, NotChecked=0, Total=650 [2023-08-30 08:24:46,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 325 [2023-08-30 08:24:46,954 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 379 transitions, 5379 flow. Second operand has 26 states, 26 states have (on average 152.07692307692307) internal successors, (3954), 26 states have internal predecessors, (3954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:46,954 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:24:46,954 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 325 [2023-08-30 08:24:46,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:24:52,235 INFO L130 PetriNetUnfolder]: 17018/30187 cut-off events. [2023-08-30 08:24:52,236 INFO L131 PetriNetUnfolder]: For 102782/102782 co-relation queries the response was YES. [2023-08-30 08:24:52,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106692 conditions, 30187 events. 17018/30187 cut-off events. For 102782/102782 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 194855 event pairs, 2635 based on Foata normal form. 220/29759 useless extension candidates. Maximal degree in co-relation 105083. Up to 6526 conditions per place. [2023-08-30 08:24:52,497 INFO L137 encePairwiseOnDemand]: 317/325 looper letters, 460 selfloop transitions, 531 changer transitions 8/1000 dead transitions. [2023-08-30 08:24:52,497 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 1000 transitions, 13148 flow [2023-08-30 08:24:52,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-08-30 08:24:52,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-08-30 08:24:52,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 4917 transitions. [2023-08-30 08:24:52,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4880397022332506 [2023-08-30 08:24:52,503 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 4917 transitions. [2023-08-30 08:24:52,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 4917 transitions. [2023-08-30 08:24:52,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:24:52,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 4917 transitions. [2023-08-30 08:24:52,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 158.61290322580646) internal successors, (4917), 31 states have internal predecessors, (4917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:52,517 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 325.0) internal successors, (10400), 32 states have internal predecessors, (10400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:52,518 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 325.0) internal successors, (10400), 32 states have internal predecessors, (10400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:52,518 INFO L175 Difference]: Start difference. First operand has 210 places, 379 transitions, 5379 flow. Second operand 31 states and 4917 transitions. [2023-08-30 08:24:52,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 1000 transitions, 13148 flow [2023-08-30 08:24:53,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 1000 transitions, 12709 flow, removed 147 selfloop flow, removed 10 redundant places. [2023-08-30 08:24:53,106 INFO L231 Difference]: Finished difference. Result has 245 places, 693 transitions, 11567 flow [2023-08-30 08:24:53,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=5190, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=292, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=11567, PETRI_PLACES=245, PETRI_TRANSITIONS=693} [2023-08-30 08:24:53,106 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 203 predicate places. [2023-08-30 08:24:53,107 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 693 transitions, 11567 flow [2023-08-30 08:24:53,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 152.07692307692307) internal successors, (3954), 26 states have internal predecessors, (3954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:53,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:24:53,107 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:24:53,113 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-30 08:24:53,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-08-30 08:24:53,308 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:24:53,308 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:24:53,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1747876112, now seen corresponding path program 5 times [2023-08-30 08:24:53,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:24:53,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844163824] [2023-08-30 08:24:53,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:24:53,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:24:53,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:24:53,907 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 0 proven. 408 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 08:24:53,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:24:53,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844163824] [2023-08-30 08:24:53,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844163824] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:24:53,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699213697] [2023-08-30 08:24:53,908 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 08:24:53,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:24:53,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:24:53,909 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:24:53,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-30 08:24:54,206 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2023-08-30 08:24:54,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 08:24:54,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 792 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-30 08:24:54,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:24:54,329 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 0 proven. 402 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 08:24:54,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:24:54,757 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 0 proven. 402 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 08:24:54,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1699213697] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:24:54,757 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:24:54,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20, 20] total 42 [2023-08-30 08:24:54,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778408664] [2023-08-30 08:24:54,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:24:54,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-08-30 08:24:54,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:24:54,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-08-30 08:24:54,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=1425, Unknown=0, NotChecked=0, Total=1892 [2023-08-30 08:24:54,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 325 [2023-08-30 08:24:54,933 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 693 transitions, 11567 flow. Second operand has 44 states, 44 states have (on average 151.4090909090909) internal successors, (6662), 44 states have internal predecessors, (6662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:24:54,933 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:24:54,933 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 325 [2023-08-30 08:24:54,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:25:06,714 INFO L130 PetriNetUnfolder]: 27676/49013 cut-off events. [2023-08-30 08:25:06,714 INFO L131 PetriNetUnfolder]: For 233918/233918 co-relation queries the response was YES. [2023-08-30 08:25:07,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179312 conditions, 49013 events. 27676/49013 cut-off events. For 233918/233918 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 337681 event pairs, 5077 based on Foata normal form. 294/48247 useless extension candidates. Maximal degree in co-relation 177245. Up to 11330 conditions per place. [2023-08-30 08:25:07,434 INFO L137 encePairwiseOnDemand]: 317/325 looper letters, 918 selfloop transitions, 794 changer transitions 12/1725 dead transitions. [2023-08-30 08:25:07,434 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 1725 transitions, 24841 flow [2023-08-30 08:25:07,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-08-30 08:25:07,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2023-08-30 08:25:07,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 8722 transitions. [2023-08-30 08:25:07,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48794405594405593 [2023-08-30 08:25:07,442 INFO L72 ComplementDD]: Start complementDD. Operand 55 states and 8722 transitions. [2023-08-30 08:25:07,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 8722 transitions. [2023-08-30 08:25:07,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:25:07,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 55 states and 8722 transitions. [2023-08-30 08:25:07,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 56 states, 55 states have (on average 158.5818181818182) internal successors, (8722), 55 states have internal predecessors, (8722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:25:07,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 56 states, 56 states have (on average 325.0) internal successors, (18200), 56 states have internal predecessors, (18200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:25:07,465 INFO L81 ComplementDD]: Finished complementDD. Result has 56 states, 56 states have (on average 325.0) internal successors, (18200), 56 states have internal predecessors, (18200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:25:07,465 INFO L175 Difference]: Start difference. First operand has 245 places, 693 transitions, 11567 flow. Second operand 55 states and 8722 transitions. [2023-08-30 08:25:07,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 1725 transitions, 24841 flow [2023-08-30 08:25:09,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 1725 transitions, 24533 flow, removed 113 selfloop flow, removed 5 redundant places. [2023-08-30 08:25:09,139 INFO L231 Difference]: Finished difference. Result has 321 places, 1119 transitions, 21702 flow [2023-08-30 08:25:09,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=11326, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=690, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=423, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=21702, PETRI_PLACES=321, PETRI_TRANSITIONS=1119} [2023-08-30 08:25:09,140 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 279 predicate places. [2023-08-30 08:25:09,140 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 1119 transitions, 21702 flow [2023-08-30 08:25:09,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 151.4090909090909) internal successors, (6662), 44 states have internal predecessors, (6662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:25:09,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:25:09,141 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:25:09,148 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-30 08:25:09,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-08-30 08:25:09,342 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:25:09,342 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:25:09,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1979003691, now seen corresponding path program 2 times [2023-08-30 08:25:09,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:25:09,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248161715] [2023-08-30 08:25:09,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:25:09,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:25:09,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:25:09,910 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 08:25:09,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:25:09,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248161715] [2023-08-30 08:25:09,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248161715] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:25:09,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [362239793] [2023-08-30 08:25:09,911 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 08:25:09,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:25:09,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:25:09,912 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:25:09,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-30 08:25:10,146 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 08:25:10,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 08:25:10,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 786 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-30 08:25:10,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:25:10,277 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 08:25:10,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:25:10,626 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 08:25:10,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [362239793] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:25:10,627 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:25:10,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 36 [2023-08-30 08:25:10,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263866000] [2023-08-30 08:25:10,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:25:10,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-08-30 08:25:10,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:25:10,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-08-30 08:25:10,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=320, Invalid=1086, Unknown=0, NotChecked=0, Total=1406 [2023-08-30 08:25:10,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 325 [2023-08-30 08:25:10,815 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 1119 transitions, 21702 flow. Second operand has 38 states, 38 states have (on average 151.73684210526315) internal successors, (5766), 38 states have internal predecessors, (5766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:25:10,815 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:25:10,815 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 325 [2023-08-30 08:25:10,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:25:33,525 INFO L130 PetriNetUnfolder]: 39670/70239 cut-off events. [2023-08-30 08:25:33,525 INFO L131 PetriNetUnfolder]: For 436720/436720 co-relation queries the response was YES. [2023-08-30 08:25:34,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269809 conditions, 70239 events. 39670/70239 cut-off events. For 436720/436720 co-relation queries the response was YES. Maximal size of possible extension queue 754. Compared 517061 event pairs, 5411 based on Foata normal form. 404/69111 useless extension candidates. Maximal degree in co-relation 267589. Up to 15029 conditions per place. [2023-08-30 08:25:34,480 INFO L137 encePairwiseOnDemand]: 317/325 looper letters, 635 selfloop transitions, 1472 changer transitions 15/2123 dead transitions. [2023-08-30 08:25:34,481 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 2123 transitions, 38137 flow [2023-08-30 08:25:34,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-08-30 08:25:34,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2023-08-30 08:25:34,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 7575 transitions. [2023-08-30 08:25:34,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4855769230769231 [2023-08-30 08:25:34,488 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 7575 transitions. [2023-08-30 08:25:34,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 7575 transitions. [2023-08-30 08:25:34,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:25:34,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 7575 transitions. [2023-08-30 08:25:34,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 157.8125) internal successors, (7575), 48 states have internal predecessors, (7575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:25:34,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 325.0) internal successors, (15925), 49 states have internal predecessors, (15925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:25:34,507 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 325.0) internal successors, (15925), 49 states have internal predecessors, (15925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:25:34,508 INFO L175 Difference]: Start difference. First operand has 321 places, 1119 transitions, 21702 flow. Second operand 48 states and 7575 transitions. [2023-08-30 08:25:34,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 2123 transitions, 38137 flow [2023-08-30 08:25:39,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 2123 transitions, 36715 flow, removed 319 selfloop flow, removed 13 redundant places. [2023-08-30 08:25:39,321 INFO L231 Difference]: Finished difference. Result has 375 places, 1660 transitions, 35602 flow [2023-08-30 08:25:39,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=20635, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=993, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=35602, PETRI_PLACES=375, PETRI_TRANSITIONS=1660} [2023-08-30 08:25:39,322 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 333 predicate places. [2023-08-30 08:25:39,322 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 1660 transitions, 35602 flow [2023-08-30 08:25:39,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 151.73684210526315) internal successors, (5766), 38 states have internal predecessors, (5766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:25:39,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:25:39,323 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:25:39,329 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-30 08:25:39,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:25:39,524 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:25:39,524 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:25:39,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1274319561, now seen corresponding path program 3 times [2023-08-30 08:25:39,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:25:39,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141358984] [2023-08-30 08:25:39,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:25:39,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:25:39,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:25:40,036 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 08:25:40,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:25:40,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141358984] [2023-08-30 08:25:40,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141358984] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:25:40,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344287691] [2023-08-30 08:25:40,037 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 08:25:40,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:25:40,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:25:40,038 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:25:40,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-30 08:25:40,580 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2023-08-30 08:25:40,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 08:25:40,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 786 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-30 08:25:40,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:25:40,697 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 08:25:40,697 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:25:41,001 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 08:25:41,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344287691] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:25:41,001 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:25:41,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 36 [2023-08-30 08:25:41,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394775086] [2023-08-30 08:25:41,002 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:25:41,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-08-30 08:25:41,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:25:41,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-08-30 08:25:41,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=320, Invalid=1086, Unknown=0, NotChecked=0, Total=1406 [2023-08-30 08:25:41,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 325 [2023-08-30 08:25:41,261 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 1660 transitions, 35602 flow. Second operand has 38 states, 38 states have (on average 151.73684210526315) internal successors, (5766), 38 states have internal predecessors, (5766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:25:41,261 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:25:41,261 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 325 [2023-08-30 08:25:41,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:26:29,120 INFO L130 PetriNetUnfolder]: 62613/110940 cut-off events. [2023-08-30 08:26:29,121 INFO L131 PetriNetUnfolder]: For 749648/749648 co-relation queries the response was YES. [2023-08-30 08:26:30,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 439969 conditions, 110940 events. 62613/110940 cut-off events. For 749648/749648 co-relation queries the response was YES. Maximal size of possible extension queue 1014. Compared 872515 event pairs, 9171 based on Foata normal form. 398/108866 useless extension candidates. Maximal degree in co-relation 437677. Up to 23908 conditions per place. [2023-08-30 08:26:31,062 INFO L137 encePairwiseOnDemand]: 317/325 looper letters, 820 selfloop transitions, 2380 changer transitions 13/3214 dead transitions. [2023-08-30 08:26:31,062 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 3214 transitions, 66519 flow [2023-08-30 08:26:31,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-08-30 08:26:31,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2023-08-30 08:26:31,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 7277 transitions. [2023-08-30 08:26:31,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48675585284280937 [2023-08-30 08:26:31,070 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 7277 transitions. [2023-08-30 08:26:31,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 7277 transitions. [2023-08-30 08:26:31,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:26:31,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 7277 transitions. [2023-08-30 08:26:31,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 158.19565217391303) internal successors, (7277), 46 states have internal predecessors, (7277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:31,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 325.0) internal successors, (15275), 47 states have internal predecessors, (15275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:31,089 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 325.0) internal successors, (15275), 47 states have internal predecessors, (15275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:31,089 INFO L175 Difference]: Start difference. First operand has 375 places, 1660 transitions, 35602 flow. Second operand 46 states and 7277 transitions. [2023-08-30 08:26:31,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 3214 transitions, 66519 flow [2023-08-30 08:26:45,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 3214 transitions, 64609 flow, removed 651 selfloop flow, removed 16 redundant places. [2023-08-30 08:26:45,618 INFO L231 Difference]: Finished difference. Result has 421 places, 2731 transitions, 64382 flow [2023-08-30 08:26:45,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=34356, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1648, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1494, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=64382, PETRI_PLACES=421, PETRI_TRANSITIONS=2731} [2023-08-30 08:26:45,619 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 379 predicate places. [2023-08-30 08:26:45,619 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 2731 transitions, 64382 flow [2023-08-30 08:26:45,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 151.73684210526315) internal successors, (5766), 38 states have internal predecessors, (5766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:45,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:26:45,620 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:26:45,627 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-30 08:26:45,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:26:45,821 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 08:26:45,821 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:26:45,822 INFO L85 PathProgramCache]: Analyzing trace with hash -282197796, now seen corresponding path program 4 times [2023-08-30 08:26:45,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:26:45,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729584569] [2023-08-30 08:26:45,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:45,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:26:45,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:46,510 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 417 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-30 08:26:46,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:26:46,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729584569] [2023-08-30 08:26:46,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729584569] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:26:46,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298117295] [2023-08-30 08:26:46,510 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 08:26:46,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:26:46,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:26:46,513 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:26:46,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-30 08:26:46,791 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 08:26:46,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 08:26:46,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 896 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-30 08:26:46,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:26:46,939 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 411 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-30 08:26:46,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:26:47,300 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 411 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-30 08:26:47,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298117295] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:26:47,301 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:26:47,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18, 18] total 38 [2023-08-30 08:26:47,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605742636] [2023-08-30 08:26:47,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:26:47,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-08-30 08:26:47,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:26:47,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-08-30 08:26:47,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=333, Invalid=1227, Unknown=0, NotChecked=0, Total=1560 [2023-08-30 08:26:47,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 325 [2023-08-30 08:26:47,502 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 2731 transitions, 64382 flow. Second operand has 40 states, 40 states have (on average 151.95) internal successors, (6078), 40 states have internal predecessors, (6078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:47,502 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:26:47,503 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 325 [2023-08-30 08:26:47,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand