./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.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 29016034e4102bf62d4fcba069301a54da1d77dfd5739e4cf52e395ddaa22e38 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 15:59:55,532 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 15:59:55,533 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 15:59:55,569 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 15:59:55,569 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 15:59:55,572 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 15:59:55,576 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 15:59:55,578 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 15:59:55,580 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 15:59:55,581 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 15:59:55,582 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 15:59:55,584 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 15:59:55,585 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 15:59:55,589 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 15:59:55,591 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 15:59:55,595 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 15:59:55,596 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 15:59:55,598 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 15:59:55,600 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 15:59:55,604 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 15:59:55,614 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 15:59:55,616 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 15:59:55,617 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 15:59:55,618 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 15:59:55,621 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 15:59:55,623 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 15:59:55,623 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 15:59:55,624 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 15:59:55,625 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 15:59:55,626 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 15:59:55,627 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 15:59:55,627 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 15:59:55,628 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 15:59:55,629 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 15:59:55,631 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 15:59:55,631 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 15:59:55,632 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 15:59:55,632 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 15:59:55,632 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 15:59:55,633 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 15:59:55,633 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 15:59:55,638 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 15:59:55,674 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 15:59:55,674 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 15:59:55,675 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 15:59:55,676 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 15:59:55,677 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 15:59:55,677 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 15:59:55,677 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 15:59:55,677 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 15:59:55,678 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 15:59:55,678 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 15:59:55,679 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 15:59:55,679 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 15:59:55,679 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 15:59:55,679 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 15:59:55,679 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 15:59:55,680 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 15:59:55,680 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 15:59:55,680 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 15:59:55,680 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 15:59:55,680 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 15:59:55,681 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 15:59:55,681 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 15:59:55,681 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 15:59:55,681 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 15:59:55,681 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 15:59:55,682 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 15:59:55,682 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:59:55,682 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 15:59:55,682 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 15:59:55,682 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 15:59:55,683 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 15:59:55,683 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 15:59:55,683 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 15:59:55,683 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 15:59:55,683 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 15:59:55,684 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 15:59:55,684 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 15:59:55,684 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29016034e4102bf62d4fcba069301a54da1d77dfd5739e4cf52e395ddaa22e38 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 15:59:56,012 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 15:59:56,033 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 15:59:56,035 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 15:59:56,036 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 15:59:56,037 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 15:59:56,038 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i [2023-08-30 15:59:57,252 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 15:59:57,515 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 15:59:57,515 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i [2023-08-30 15:59:57,535 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77f91de6c/5ca6127bb49c4c7584338233c786c61e/FLAG0224b26ad [2023-08-30 15:59:57,550 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77f91de6c/5ca6127bb49c4c7584338233c786c61e [2023-08-30 15:59:57,551 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 15:59:57,552 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 15:59:57,554 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 15:59:57,554 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 15:59:57,558 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 15:59:57,559 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:59:57" (1/1) ... [2023-08-30 15:59:57,562 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7775884d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:59:57, skipping insertion in model container [2023-08-30 15:59:57,562 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:59:57" (1/1) ... [2023-08-30 15:59:57,568 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 15:59:57,604 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 15:59:57,911 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-deagle/arithmetic_prog_ok.i[39757,39770] [2023-08-30 15:59:57,913 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:59:57,926 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 15:59:57,964 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-deagle/arithmetic_prog_ok.i[39757,39770] [2023-08-30 15:59:57,965 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:59:58,046 INFO L208 MainTranslator]: Completed translation [2023-08-30 15:59:58,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:59:58 WrapperNode [2023-08-30 15:59:58,047 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 15:59:58,048 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 15:59:58,048 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 15:59:58,048 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 15:59:58,054 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:59:58" (1/1) ... [2023-08-30 15:59:58,069 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:59:58" (1/1) ... [2023-08-30 15:59:58,088 INFO L138 Inliner]: procedures = 243, calls = 50, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 81 [2023-08-30 15:59:58,089 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 15:59:58,089 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 15:59:58,089 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 15:59:58,090 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 15:59:58,097 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:59:58" (1/1) ... [2023-08-30 15:59:58,097 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:59:58" (1/1) ... [2023-08-30 15:59:58,101 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:59:58" (1/1) ... [2023-08-30 15:59:58,101 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:59:58" (1/1) ... [2023-08-30 15:59:58,107 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:59:58" (1/1) ... [2023-08-30 15:59:58,110 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:59:58" (1/1) ... [2023-08-30 15:59:58,112 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:59:58" (1/1) ... [2023-08-30 15:59:58,113 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:59:58" (1/1) ... [2023-08-30 15:59:58,115 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 15:59:58,116 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 15:59:58,116 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 15:59:58,116 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 15:59:58,117 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:59:58" (1/1) ... [2023-08-30 15:59:58,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:59:58,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:59:58,143 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 15:59:58,145 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 15:59:58,170 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 15:59:58,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 15:59:58,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-08-30 15:59:58,171 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 15:59:58,171 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 15:59:58,171 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 15:59:58,172 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 15:59:58,172 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 15:59:58,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 15:59:58,172 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 15:59:58,172 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 15:59:58,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 15:59:58,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 15:59:58,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 15:59:58,174 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 15:59:58,277 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 15:59:58,279 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 15:59:58,576 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 15:59:58,582 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 15:59:58,583 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-30 15:59:58,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:59:58 BoogieIcfgContainer [2023-08-30 15:59:58,585 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 15:59:58,586 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 15:59:58,586 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 15:59:58,589 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 15:59:58,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 03:59:57" (1/3) ... [2023-08-30 15:59:58,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61d5996c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:59:58, skipping insertion in model container [2023-08-30 15:59:58,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:59:58" (2/3) ... [2023-08-30 15:59:58,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61d5996c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:59:58, skipping insertion in model container [2023-08-30 15:59:58,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:59:58" (3/3) ... [2023-08-30 15:59:58,601 INFO L112 eAbstractionObserver]: Analyzing ICFG arithmetic_prog_ok.i [2023-08-30 15:59:58,607 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 15:59:58,615 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 15:59:58,616 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-30 15:59:58,616 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 15:59:58,745 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 15:59:58,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 146 transitions, 308 flow [2023-08-30 15:59:58,878 INFO L130 PetriNetUnfolder]: 10/144 cut-off events. [2023-08-30 15:59:58,878 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 15:59:58,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 144 events. 10/144 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 200 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 90. Up to 3 conditions per place. [2023-08-30 15:59:58,883 INFO L82 GeneralOperation]: Start removeDead. Operand has 143 places, 146 transitions, 308 flow [2023-08-30 15:59:58,893 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 128 places, 129 transitions, 267 flow [2023-08-30 15:59:58,903 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 15:59:58,918 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 128 places, 129 transitions, 267 flow [2023-08-30 15:59:58,923 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 128 places, 129 transitions, 267 flow [2023-08-30 15:59:58,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 128 places, 129 transitions, 267 flow [2023-08-30 15:59:58,975 INFO L130 PetriNetUnfolder]: 8/129 cut-off events. [2023-08-30 15:59:58,976 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 15:59:58,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 129 events. 8/129 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 182 event pairs, 0 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 90. Up to 2 conditions per place. [2023-08-30 15:59:58,987 INFO L119 LiptonReduction]: Number of co-enabled transitions 3074 [2023-08-30 16:00:04,325 INFO L134 LiptonReduction]: Checked pairs total: 6805 [2023-08-30 16:00:04,325 INFO L136 LiptonReduction]: Total number of compositions: 109 [2023-08-30 16:00:04,346 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 16:00:04,352 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;@1d5357d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 16:00:04,352 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-08-30 16:00:04,365 INFO L130 PetriNetUnfolder]: 2/15 cut-off events. [2023-08-30 16:00:04,365 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 16:00:04,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:00:04,367 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 16:00:04,367 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 16:00:04,371 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:00:04,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1191747266, now seen corresponding path program 1 times [2023-08-30 16:00:04,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:00:04,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312317697] [2023-08-30 16:00:04,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:00:04,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:00:04,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:00:04,559 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 16:00:04,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:00:04,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312317697] [2023-08-30 16:00:04,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312317697] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:00:04,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:00:04,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 16:00:04,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181221057] [2023-08-30 16:00:04,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:00:04,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 16:00:04,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:00:04,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 16:00:04,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 16:00:04,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 255 [2023-08-30 16:00:04,594 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 36 transitions, 81 flow. Second operand has 2 states, 2 states have (on average 138.5) internal successors, (277), 2 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:00:04,594 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:00:04,594 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 255 [2023-08-30 16:00:04,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:00:04,714 INFO L130 PetriNetUnfolder]: 345/594 cut-off events. [2023-08-30 16:00:04,714 INFO L131 PetriNetUnfolder]: For 37/37 co-relation queries the response was YES. [2023-08-30 16:00:04,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1187 conditions, 594 events. 345/594 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2578 event pairs, 261 based on Foata normal form. 24/419 useless extension candidates. Maximal degree in co-relation 1074. Up to 561 conditions per place. [2023-08-30 16:00:04,719 INFO L137 encePairwiseOnDemand]: 254/255 looper letters, 28 selfloop transitions, 0 changer transitions 0/35 dead transitions. [2023-08-30 16:00:04,720 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 35 transitions, 135 flow [2023-08-30 16:00:04,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 16:00:04,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 16:00:04,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 301 transitions. [2023-08-30 16:00:04,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5901960784313726 [2023-08-30 16:00:04,740 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 301 transitions. [2023-08-30 16:00:04,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 301 transitions. [2023-08-30 16:00:04,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:00:04,745 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 301 transitions. [2023-08-30 16:00:04,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 150.5) internal successors, (301), 2 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:00:04,755 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 255.0) internal successors, (765), 3 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:00:04,755 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 255.0) internal successors, (765), 3 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:00:04,757 INFO L175 Difference]: Start difference. First operand has 38 places, 36 transitions, 81 flow. Second operand 2 states and 301 transitions. [2023-08-30 16:00:04,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 35 transitions, 135 flow [2023-08-30 16:00:04,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 35 transitions, 130 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 16:00:04,762 INFO L231 Difference]: Finished difference. Result has 36 places, 35 transitions, 74 flow [2023-08-30 16:00:04,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=74, PETRI_PLACES=36, PETRI_TRANSITIONS=35} [2023-08-30 16:00:04,766 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -2 predicate places. [2023-08-30 16:00:04,766 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 35 transitions, 74 flow [2023-08-30 16:00:04,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 138.5) internal successors, (277), 2 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:00:04,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:00:04,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:00:04,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 16:00:04,771 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 16:00:04,778 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:00:04,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1710452295, now seen corresponding path program 1 times [2023-08-30 16:00:04,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:00:04,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182982994] [2023-08-30 16:00:04,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:00:04,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:00:04,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:00:04,959 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 16:00:04,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:00:04,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182982994] [2023-08-30 16:00:04,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182982994] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:00:04,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:00:04,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 16:00:04,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983791373] [2023-08-30 16:00:04,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:00:04,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 16:00:04,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:00:04,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 16:00:04,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 16:00:04,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 255 [2023-08-30 16:00:04,994 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 35 transitions, 74 flow. Second operand has 4 states, 4 states have (on average 127.5) internal successors, (510), 4 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:00:04,994 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:00:04,995 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 255 [2023-08-30 16:00:04,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:00:05,261 INFO L130 PetriNetUnfolder]: 1041/1685 cut-off events. [2023-08-30 16:00:05,262 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-08-30 16:00:05,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3349 conditions, 1685 events. 1041/1685 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 7432 event pairs, 260 based on Foata normal form. 0/1087 useless extension candidates. Maximal degree in co-relation 3346. Up to 643 conditions per place. [2023-08-30 16:00:05,272 INFO L137 encePairwiseOnDemand]: 242/255 looper letters, 77 selfloop transitions, 19 changer transitions 0/99 dead transitions. [2023-08-30 16:00:05,272 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 99 transitions, 397 flow [2023-08-30 16:00:05,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 16:00:05,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 16:00:05,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 730 transitions. [2023-08-30 16:00:05,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5725490196078431 [2023-08-30 16:00:05,277 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 730 transitions. [2023-08-30 16:00:05,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 730 transitions. [2023-08-30 16:00:05,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:00:05,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 730 transitions. [2023-08-30 16:00:05,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 146.0) internal successors, (730), 5 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:00:05,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 255.0) internal successors, (1530), 6 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:00:05,285 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 255.0) internal successors, (1530), 6 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:00:05,285 INFO L175 Difference]: Start difference. First operand has 36 places, 35 transitions, 74 flow. Second operand 5 states and 730 transitions. [2023-08-30 16:00:05,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 99 transitions, 397 flow [2023-08-30 16:00:05,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 99 transitions, 397 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 16:00:05,289 INFO L231 Difference]: Finished difference. Result has 44 places, 53 transitions, 230 flow [2023-08-30 16:00:05,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=230, PETRI_PLACES=44, PETRI_TRANSITIONS=53} [2023-08-30 16:00:05,290 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 6 predicate places. [2023-08-30 16:00:05,290 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 53 transitions, 230 flow [2023-08-30 16:00:05,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 127.5) internal successors, (510), 4 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:00:05,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:00:05,291 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:00:05,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 16:00:05,292 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 16:00:05,292 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:00:05,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1710452403, now seen corresponding path program 1 times [2023-08-30 16:00:05,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:00:05,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269734150] [2023-08-30 16:00:05,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:00:05,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:00:05,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:00:05,372 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 16:00:05,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:00:05,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269734150] [2023-08-30 16:00:05,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269734150] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:00:05,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:00:05,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 16:00:05,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811821371] [2023-08-30 16:00:05,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:00:05,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 16:00:05,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:00:05,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 16:00:05,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 16:00:05,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 255 [2023-08-30 16:00:05,401 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 53 transitions, 230 flow. Second operand has 4 states, 4 states have (on average 126.75) internal successors, (507), 4 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:00:05,402 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:00:05,402 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 255 [2023-08-30 16:00:05,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:00:05,724 INFO L130 PetriNetUnfolder]: 1487/2394 cut-off events. [2023-08-30 16:00:05,724 INFO L131 PetriNetUnfolder]: For 1212/1212 co-relation queries the response was YES. [2023-08-30 16:00:05,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6666 conditions, 2394 events. 1487/2394 cut-off events. For 1212/1212 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 11403 event pairs, 230 based on Foata normal form. 152/2045 useless extension candidates. Maximal degree in co-relation 6659. Up to 1202 conditions per place. [2023-08-30 16:00:05,738 INFO L137 encePairwiseOnDemand]: 241/255 looper letters, 103 selfloop transitions, 43 changer transitions 0/148 dead transitions. [2023-08-30 16:00:05,738 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 148 transitions, 925 flow [2023-08-30 16:00:05,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 16:00:05,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 16:00:05,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 733 transitions. [2023-08-30 16:00:05,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5749019607843138 [2023-08-30 16:00:05,741 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 733 transitions. [2023-08-30 16:00:05,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 733 transitions. [2023-08-30 16:00:05,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:00:05,741 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 733 transitions. [2023-08-30 16:00:05,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 146.6) internal successors, (733), 5 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:00:05,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 255.0) internal successors, (1530), 6 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:00:05,746 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 255.0) internal successors, (1530), 6 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:00:05,746 INFO L175 Difference]: Start difference. First operand has 44 places, 53 transitions, 230 flow. Second operand 5 states and 733 transitions. [2023-08-30 16:00:05,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 148 transitions, 925 flow [2023-08-30 16:00:05,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 148 transitions, 925 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 16:00:05,757 INFO L231 Difference]: Finished difference. Result has 52 places, 91 transitions, 706 flow [2023-08-30 16:00:05,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=706, PETRI_PLACES=52, PETRI_TRANSITIONS=91} [2023-08-30 16:00:05,758 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 14 predicate places. [2023-08-30 16:00:05,758 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 91 transitions, 706 flow [2023-08-30 16:00:05,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 126.75) internal successors, (507), 4 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:00:05,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:00:05,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:00:05,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 16:00:05,759 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 16:00:05,759 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:00:05,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1484417982, now seen corresponding path program 1 times [2023-08-30 16:00:05,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:00:05,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937434869] [2023-08-30 16:00:05,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:00:05,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:00:05,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:00:05,845 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 16:00:05,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:00:05,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937434869] [2023-08-30 16:00:05,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937434869] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:00:05,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:00:05,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 16:00:05,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728942558] [2023-08-30 16:00:05,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:00:05,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 16:00:05,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:00:05,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 16:00:05,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 16:00:05,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 255 [2023-08-30 16:00:05,858 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 91 transitions, 706 flow. Second operand has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:00:05,858 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:00:05,861 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 255 [2023-08-30 16:00:05,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:00:06,184 INFO L130 PetriNetUnfolder]: 1778/3057 cut-off events. [2023-08-30 16:00:06,184 INFO L131 PetriNetUnfolder]: For 7271/7667 co-relation queries the response was YES. [2023-08-30 16:00:06,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11184 conditions, 3057 events. 1778/3057 cut-off events. For 7271/7667 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 17436 event pairs, 553 based on Foata normal form. 92/2559 useless extension candidates. Maximal degree in co-relation 11173. Up to 1779 conditions per place. [2023-08-30 16:00:06,210 INFO L137 encePairwiseOnDemand]: 250/255 looper letters, 109 selfloop transitions, 9 changer transitions 0/139 dead transitions. [2023-08-30 16:00:06,210 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 139 transitions, 1300 flow [2023-08-30 16:00:06,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 16:00:06,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 16:00:06,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 447 transitions. [2023-08-30 16:00:06,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5843137254901961 [2023-08-30 16:00:06,218 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 447 transitions. [2023-08-30 16:00:06,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 447 transitions. [2023-08-30 16:00:06,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:00:06,219 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 447 transitions. [2023-08-30 16:00:06,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:00:06,221 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:00:06,222 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:00:06,222 INFO L175 Difference]: Start difference. First operand has 52 places, 91 transitions, 706 flow. Second operand 3 states and 447 transitions. [2023-08-30 16:00:06,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 139 transitions, 1300 flow [2023-08-30 16:00:06,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 139 transitions, 1300 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 16:00:06,236 INFO L231 Difference]: Finished difference. Result has 55 places, 99 transitions, 861 flow [2023-08-30 16:00:06,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=706, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=861, PETRI_PLACES=55, PETRI_TRANSITIONS=99} [2023-08-30 16:00:06,237 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 17 predicate places. [2023-08-30 16:00:06,238 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 99 transitions, 861 flow [2023-08-30 16:00:06,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:00:06,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:00:06,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:00:06,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 16:00:06,239 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 16:00:06,239 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:00:06,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1288775049, now seen corresponding path program 1 times [2023-08-30 16:00:06,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:00:06,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634929356] [2023-08-30 16:00:06,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:00:06,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:00:06,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:00:06,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:00:06,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:00:06,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634929356] [2023-08-30 16:00:06,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634929356] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:00:06,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:00:06,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 16:00:06,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948915558] [2023-08-30 16:00:06,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:00:06,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 16:00:06,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:00:06,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 16:00:06,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 16:00:06,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 255 [2023-08-30 16:00:06,294 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 99 transitions, 861 flow. Second operand has 3 states, 3 states have (on average 132.33333333333334) internal successors, (397), 3 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:00:06,294 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:00:06,294 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 255 [2023-08-30 16:00:06,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:00:06,516 INFO L130 PetriNetUnfolder]: 1166/1959 cut-off events. [2023-08-30 16:00:06,516 INFO L131 PetriNetUnfolder]: For 5347/5717 co-relation queries the response was YES. [2023-08-30 16:00:06,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7770 conditions, 1959 events. 1166/1959 cut-off events. For 5347/5717 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 9404 event pairs, 252 based on Foata normal form. 128/1676 useless extension candidates. Maximal degree in co-relation 7757. Up to 1521 conditions per place. [2023-08-30 16:00:06,532 INFO L137 encePairwiseOnDemand]: 251/255 looper letters, 88 selfloop transitions, 12 changer transitions 3/114 dead transitions. [2023-08-30 16:00:06,532 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 114 transitions, 1128 flow [2023-08-30 16:00:06,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 16:00:06,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 16:00:06,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 436 transitions. [2023-08-30 16:00:06,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5699346405228758 [2023-08-30 16:00:06,534 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 436 transitions. [2023-08-30 16:00:06,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 436 transitions. [2023-08-30 16:00:06,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:00:06,535 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 436 transitions. [2023-08-30 16:00:06,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:00:06,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:00:06,538 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:00:06,538 INFO L175 Difference]: Start difference. First operand has 55 places, 99 transitions, 861 flow. Second operand 3 states and 436 transitions. [2023-08-30 16:00:06,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 114 transitions, 1128 flow [2023-08-30 16:00:06,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 114 transitions, 1123 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 16:00:06,549 INFO L231 Difference]: Finished difference. Result has 58 places, 95 transitions, 860 flow [2023-08-30 16:00:06,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=786, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=860, PETRI_PLACES=58, PETRI_TRANSITIONS=95} [2023-08-30 16:00:06,551 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 20 predicate places. [2023-08-30 16:00:06,551 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 95 transitions, 860 flow [2023-08-30 16:00:06,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.33333333333334) internal successors, (397), 3 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:00:06,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:00:06,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:00:06,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 16:00:06,552 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 16:00:06,552 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:00:06,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1476933034, now seen corresponding path program 1 times [2023-08-30 16:00:06,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:00:06,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809476057] [2023-08-30 16:00:06,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:00:06,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:00:06,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:00:06,648 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 16:00:06,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:00:06,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809476057] [2023-08-30 16:00:06,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809476057] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:00:06,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:00:06,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 16:00:06,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084662755] [2023-08-30 16:00:06,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:00:06,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 16:00:06,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:00:06,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 16:00:06,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 16:00:06,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 255 [2023-08-30 16:00:06,684 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 95 transitions, 860 flow. Second operand has 3 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:00:06,684 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:00:06,684 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 255 [2023-08-30 16:00:06,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:00:06,822 INFO L130 PetriNetUnfolder]: 407/866 cut-off events. [2023-08-30 16:00:06,822 INFO L131 PetriNetUnfolder]: For 1455/1455 co-relation queries the response was YES. [2023-08-30 16:00:06,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2999 conditions, 866 events. 407/866 cut-off events. For 1455/1455 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 4310 event pairs, 124 based on Foata normal form. 52/822 useless extension candidates. Maximal degree in co-relation 2985. Up to 407 conditions per place. [2023-08-30 16:00:06,829 INFO L137 encePairwiseOnDemand]: 243/255 looper letters, 29 selfloop transitions, 16 changer transitions 0/55 dead transitions. [2023-08-30 16:00:06,829 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 55 transitions, 431 flow [2023-08-30 16:00:06,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 16:00:06,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 16:00:06,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 420 transitions. [2023-08-30 16:00:06,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5490196078431373 [2023-08-30 16:00:06,831 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 420 transitions. [2023-08-30 16:00:06,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 420 transitions. [2023-08-30 16:00:06,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:00:06,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 420 transitions. [2023-08-30 16:00:06,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:00:06,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:00:06,835 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:00:06,835 INFO L175 Difference]: Start difference. First operand has 58 places, 95 transitions, 860 flow. Second operand 3 states and 420 transitions. [2023-08-30 16:00:06,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 55 transitions, 431 flow [2023-08-30 16:00:06,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 55 transitions, 342 flow, removed 24 selfloop flow, removed 8 redundant places. [2023-08-30 16:00:06,845 INFO L231 Difference]: Finished difference. Result has 50 places, 46 transitions, 259 flow [2023-08-30 16:00:06,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=259, PETRI_PLACES=50, PETRI_TRANSITIONS=46} [2023-08-30 16:00:06,846 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 12 predicate places. [2023-08-30 16:00:06,846 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 46 transitions, 259 flow [2023-08-30 16:00:06,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:00:06,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:00:06,847 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-08-30 16:00:06,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 16:00:06,847 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 16:00:06,848 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:00:06,848 INFO L85 PathProgramCache]: Analyzing trace with hash 51057020, now seen corresponding path program 1 times [2023-08-30 16:00:06,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:00:06,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136231374] [2023-08-30 16:00:06,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:00:06,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:00:06,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:00:06,901 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 16:00:06,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:00:06,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136231374] [2023-08-30 16:00:06,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136231374] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:00:06,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:00:06,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 16:00:06,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777267009] [2023-08-30 16:00:06,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:00:06,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 16:00:06,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:00:06,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 16:00:06,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 16:00:06,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 255 [2023-08-30 16:00:06,928 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 259 flow. Second operand has 5 states, 5 states have (on average 126.6) internal successors, (633), 5 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:00:06,928 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:00:06,928 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 255 [2023-08-30 16:00:06,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:00:07,095 INFO L130 PetriNetUnfolder]: 380/763 cut-off events. [2023-08-30 16:00:07,096 INFO L131 PetriNetUnfolder]: For 630/630 co-relation queries the response was YES. [2023-08-30 16:00:07,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2284 conditions, 763 events. 380/763 cut-off events. For 630/630 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 3215 event pairs, 81 based on Foata normal form. 26/745 useless extension candidates. Maximal degree in co-relation 2273. Up to 304 conditions per place. [2023-08-30 16:00:07,100 INFO L137 encePairwiseOnDemand]: 244/255 looper letters, 57 selfloop transitions, 11 changer transitions 7/77 dead transitions. [2023-08-30 16:00:07,100 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 77 transitions, 492 flow [2023-08-30 16:00:07,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 16:00:07,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 16:00:07,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 820 transitions. [2023-08-30 16:00:07,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5359477124183006 [2023-08-30 16:00:07,104 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 820 transitions. [2023-08-30 16:00:07,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 820 transitions. [2023-08-30 16:00:07,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:00:07,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 820 transitions. [2023-08-30 16:00:07,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 136.66666666666666) internal successors, (820), 6 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:00:07,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 255.0) internal successors, (1785), 7 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:00:07,109 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 255.0) internal successors, (1785), 7 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:00:07,109 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 259 flow. Second operand 6 states and 820 transitions. [2023-08-30 16:00:07,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 77 transitions, 492 flow [2023-08-30 16:00:07,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 77 transitions, 469 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 16:00:07,113 INFO L231 Difference]: Finished difference. Result has 55 places, 45 transitions, 265 flow [2023-08-30 16:00:07,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=265, PETRI_PLACES=55, PETRI_TRANSITIONS=45} [2023-08-30 16:00:07,114 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 17 predicate places. [2023-08-30 16:00:07,114 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 45 transitions, 265 flow [2023-08-30 16:00:07,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 126.6) internal successors, (633), 5 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:00:07,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:00:07,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:00:07,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 16:00:07,115 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 16:00:07,115 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:00:07,115 INFO L85 PathProgramCache]: Analyzing trace with hash 15479413, now seen corresponding path program 1 times [2023-08-30 16:00:07,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:00:07,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438852899] [2023-08-30 16:00:07,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:00:07,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:00:07,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:00:07,175 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 16:00:07,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:00:07,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438852899] [2023-08-30 16:00:07,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438852899] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:00:07,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:00:07,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 16:00:07,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280038449] [2023-08-30 16:00:07,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:00:07,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 16:00:07,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:00:07,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 16:00:07,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 16:00:07,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 255 [2023-08-30 16:00:07,199 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 45 transitions, 265 flow. Second operand has 5 states, 5 states have (on average 127.8) internal successors, (639), 5 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:00:07,199 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:00:07,199 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 255 [2023-08-30 16:00:07,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:00:07,354 INFO L130 PetriNetUnfolder]: 465/956 cut-off events. [2023-08-30 16:00:07,354 INFO L131 PetriNetUnfolder]: For 1159/1159 co-relation queries the response was YES. [2023-08-30 16:00:07,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2839 conditions, 956 events. 465/956 cut-off events. For 1159/1159 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 4382 event pairs, 90 based on Foata normal form. 22/934 useless extension candidates. Maximal degree in co-relation 2826. Up to 335 conditions per place. [2023-08-30 16:00:07,360 INFO L137 encePairwiseOnDemand]: 244/255 looper letters, 62 selfloop transitions, 20 changer transitions 0/84 dead transitions. [2023-08-30 16:00:07,360 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 84 transitions, 571 flow [2023-08-30 16:00:07,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 16:00:07,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 16:00:07,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 822 transitions. [2023-08-30 16:00:07,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5372549019607843 [2023-08-30 16:00:07,363 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 822 transitions. [2023-08-30 16:00:07,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 822 transitions. [2023-08-30 16:00:07,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:00:07,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 822 transitions. [2023-08-30 16:00:07,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 137.0) internal successors, (822), 6 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:00:07,369 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 255.0) internal successors, (1785), 7 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:00:07,369 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 255.0) internal successors, (1785), 7 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:00:07,369 INFO L175 Difference]: Start difference. First operand has 55 places, 45 transitions, 265 flow. Second operand 6 states and 822 transitions. [2023-08-30 16:00:07,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 84 transitions, 571 flow [2023-08-30 16:00:07,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 84 transitions, 545 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 16:00:07,373 INFO L231 Difference]: Finished difference. Result has 58 places, 50 transitions, 341 flow [2023-08-30 16:00:07,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=341, PETRI_PLACES=58, PETRI_TRANSITIONS=50} [2023-08-30 16:00:07,374 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 20 predicate places. [2023-08-30 16:00:07,374 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 50 transitions, 341 flow [2023-08-30 16:00:07,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 127.8) internal successors, (639), 5 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:00:07,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:00:07,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:00:07,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 16:00:07,375 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 16:00:07,376 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:00:07,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1990762071, now seen corresponding path program 1 times [2023-08-30 16:00:07,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:00:07,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004146973] [2023-08-30 16:00:07,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:00:07,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:00:07,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:00:07,432 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 16:00:07,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:00:07,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004146973] [2023-08-30 16:00:07,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004146973] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:00:07,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:00:07,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 16:00:07,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43180597] [2023-08-30 16:00:07,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:00:07,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 16:00:07,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:00:07,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 16:00:07,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 16:00:07,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 255 [2023-08-30 16:00:07,444 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 50 transitions, 341 flow. Second operand has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:00:07,444 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:00:07,445 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 255 [2023-08-30 16:00:07,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:00:07,557 INFO L130 PetriNetUnfolder]: 414/921 cut-off events. [2023-08-30 16:00:07,557 INFO L131 PetriNetUnfolder]: For 1226/1230 co-relation queries the response was YES. [2023-08-30 16:00:07,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2798 conditions, 921 events. 414/921 cut-off events. For 1226/1230 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 4693 event pairs, 234 based on Foata normal form. 18/889 useless extension candidates. Maximal degree in co-relation 2784. Up to 630 conditions per place. [2023-08-30 16:00:07,569 INFO L137 encePairwiseOnDemand]: 250/255 looper letters, 50 selfloop transitions, 2 changer transitions 0/65 dead transitions. [2023-08-30 16:00:07,570 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 65 transitions, 514 flow [2023-08-30 16:00:07,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 16:00:07,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 16:00:07,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 441 transitions. [2023-08-30 16:00:07,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5764705882352941 [2023-08-30 16:00:07,572 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 441 transitions. [2023-08-30 16:00:07,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 441 transitions. [2023-08-30 16:00:07,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:00:07,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 441 transitions. [2023-08-30 16:00:07,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:00:07,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:00:07,575 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:00:07,575 INFO L175 Difference]: Start difference. First operand has 58 places, 50 transitions, 341 flow. Second operand 3 states and 441 transitions. [2023-08-30 16:00:07,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 65 transitions, 514 flow [2023-08-30 16:00:07,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 65 transitions, 474 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 16:00:07,582 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 322 flow [2023-08-30 16:00:07,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=322, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2023-08-30 16:00:07,583 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 19 predicate places. [2023-08-30 16:00:07,583 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 322 flow [2023-08-30 16:00:07,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:00:07,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:00:07,583 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:00:07,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 16:00:07,584 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 16:00:07,585 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:00:07,585 INFO L85 PathProgramCache]: Analyzing trace with hash 902276768, now seen corresponding path program 1 times [2023-08-30 16:00:07,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:00:07,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340171478] [2023-08-30 16:00:07,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:00:07,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:00:07,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:00:07,723 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:00:07,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:00:07,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340171478] [2023-08-30 16:00:07,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340171478] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 16:00:07,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242521396] [2023-08-30 16:00:07,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:00:07,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 16:00:07,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 16:00:07,727 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 16:00:07,773 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 16:00:07,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:00:07,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 16:00:07,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 16:00:07,965 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:00:07,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 16:00:08,064 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:00:08,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242521396] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 16:00:08,064 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 16:00:08,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2023-08-30 16:00:08,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335817010] [2023-08-30 16:00:08,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 16:00:08,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 16:00:08,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:00:08,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 16:00:08,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-08-30 16:00:08,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 255 [2023-08-30 16:00:08,122 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 322 flow. Second operand has 10 states, 10 states have (on average 123.8) internal successors, (1238), 10 states have internal predecessors, (1238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:00:08,122 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:00:08,122 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 255 [2023-08-30 16:00:08,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:00:08,319 INFO L130 PetriNetUnfolder]: 440/943 cut-off events. [2023-08-30 16:00:08,320 INFO L131 PetriNetUnfolder]: For 1034/1034 co-relation queries the response was YES. [2023-08-30 16:00:08,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2846 conditions, 943 events. 440/943 cut-off events. For 1034/1034 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 4528 event pairs, 106 based on Foata normal form. 48/947 useless extension candidates. Maximal degree in co-relation 2831. Up to 395 conditions per place. [2023-08-30 16:00:08,325 INFO L137 encePairwiseOnDemand]: 237/255 looper letters, 51 selfloop transitions, 25 changer transitions 0/78 dead transitions. [2023-08-30 16:00:08,325 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 78 transitions, 542 flow [2023-08-30 16:00:08,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 16:00:08,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 16:00:08,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1026 transitions. [2023-08-30 16:00:08,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5029411764705882 [2023-08-30 16:00:08,329 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1026 transitions. [2023-08-30 16:00:08,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1026 transitions. [2023-08-30 16:00:08,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:00:08,330 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1026 transitions. [2023-08-30 16:00:08,332 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 128.25) internal successors, (1026), 8 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:00:08,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:00:08,335 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:00:08,336 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 322 flow. Second operand 8 states and 1026 transitions. [2023-08-30 16:00:08,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 78 transitions, 542 flow [2023-08-30 16:00:08,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 78 transitions, 537 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 16:00:08,340 INFO L231 Difference]: Finished difference. Result has 62 places, 48 transitions, 357 flow [2023-08-30 16:00:08,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=357, PETRI_PLACES=62, PETRI_TRANSITIONS=48} [2023-08-30 16:00:08,341 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 24 predicate places. [2023-08-30 16:00:08,341 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 48 transitions, 357 flow [2023-08-30 16:00:08,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 123.8) internal successors, (1238), 10 states have internal predecessors, (1238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:00:08,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:00:08,342 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:00:08,351 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-30 16:00:08,548 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,SelfDestructingSolverStorable9 [2023-08-30 16:00:08,548 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 16:00:08,549 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:00:08,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1885524128, now seen corresponding path program 1 times [2023-08-30 16:00:08,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:00:08,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016409107] [2023-08-30 16:00:08,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:00:08,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:00:08,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:00:08,653 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:00:08,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:00:08,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016409107] [2023-08-30 16:00:08,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016409107] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:00:08,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:00:08,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 16:00:08,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431765567] [2023-08-30 16:00:08,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:00:08,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 16:00:08,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:00:08,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 16:00:08,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 16:00:08,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 255 [2023-08-30 16:00:08,688 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 48 transitions, 357 flow. Second operand has 6 states, 6 states have (on average 124.16666666666667) internal successors, (745), 6 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:00:08,688 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:00:08,688 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 255 [2023-08-30 16:00:08,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:00:08,878 INFO L130 PetriNetUnfolder]: 404/865 cut-off events. [2023-08-30 16:00:08,879 INFO L131 PetriNetUnfolder]: For 930/930 co-relation queries the response was YES. [2023-08-30 16:00:08,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2870 conditions, 865 events. 404/865 cut-off events. For 930/930 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 3988 event pairs, 107 based on Foata normal form. 20/841 useless extension candidates. Maximal degree in co-relation 2854. Up to 332 conditions per place. [2023-08-30 16:00:08,886 INFO L137 encePairwiseOnDemand]: 242/255 looper letters, 53 selfloop transitions, 20 changer transitions 0/75 dead transitions. [2023-08-30 16:00:08,886 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 75 transitions, 556 flow [2023-08-30 16:00:08,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 16:00:08,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 16:00:08,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1032 transitions. [2023-08-30 16:00:08,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5058823529411764 [2023-08-30 16:00:08,890 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1032 transitions. [2023-08-30 16:00:08,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1032 transitions. [2023-08-30 16:00:08,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:00:08,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1032 transitions. [2023-08-30 16:00:08,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 129.0) internal successors, (1032), 8 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:00:08,896 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:00:08,897 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:00:08,897 INFO L175 Difference]: Start difference. First operand has 62 places, 48 transitions, 357 flow. Second operand 8 states and 1032 transitions. [2023-08-30 16:00:08,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 75 transitions, 556 flow [2023-08-30 16:00:08,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 75 transitions, 518 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-08-30 16:00:08,902 INFO L231 Difference]: Finished difference. Result has 62 places, 45 transitions, 321 flow [2023-08-30 16:00:08,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=321, PETRI_PLACES=62, PETRI_TRANSITIONS=45} [2023-08-30 16:00:08,903 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 24 predicate places. [2023-08-30 16:00:08,903 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 45 transitions, 321 flow [2023-08-30 16:00:08,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 124.16666666666667) internal successors, (745), 6 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:00:08,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:00:08,904 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:00:08,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 16:00:08,904 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 16:00:08,904 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:00:08,904 INFO L85 PathProgramCache]: Analyzing trace with hash -471659345, now seen corresponding path program 1 times [2023-08-30 16:00:08,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:00:08,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979186079] [2023-08-30 16:00:08,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:00:08,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:00:08,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:00:08,950 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 16:00:08,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:00:08,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979186079] [2023-08-30 16:00:08,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979186079] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:00:08,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:00:08,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 16:00:08,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262999021] [2023-08-30 16:00:08,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:00:08,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 16:00:08,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:00:08,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 16:00:08,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 16:00:08,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 255 [2023-08-30 16:00:08,959 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 45 transitions, 321 flow. Second operand has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:00:08,960 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:00:08,960 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 255 [2023-08-30 16:00:08,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:00:09,054 INFO L130 PetriNetUnfolder]: 321/734 cut-off events. [2023-08-30 16:00:09,055 INFO L131 PetriNetUnfolder]: For 776/778 co-relation queries the response was YES. [2023-08-30 16:00:09,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2377 conditions, 734 events. 321/734 cut-off events. For 776/778 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 3371 event pairs, 148 based on Foata normal form. 2/706 useless extension candidates. Maximal degree in co-relation 2361. Up to 350 conditions per place. [2023-08-30 16:00:09,059 INFO L137 encePairwiseOnDemand]: 251/255 looper letters, 47 selfloop transitions, 5 changer transitions 0/62 dead transitions. [2023-08-30 16:00:09,059 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 62 transitions, 506 flow [2023-08-30 16:00:09,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 16:00:09,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 16:00:09,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 432 transitions. [2023-08-30 16:00:09,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5647058823529412 [2023-08-30 16:00:09,061 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 432 transitions. [2023-08-30 16:00:09,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 432 transitions. [2023-08-30 16:00:09,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:00:09,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 432 transitions. [2023-08-30 16:00:09,062 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:00:09,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:00:09,064 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:00:09,064 INFO L175 Difference]: Start difference. First operand has 62 places, 45 transitions, 321 flow. Second operand 3 states and 432 transitions. [2023-08-30 16:00:09,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 62 transitions, 506 flow [2023-08-30 16:00:09,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 62 transitions, 465 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-30 16:00:09,068 INFO L231 Difference]: Finished difference. Result has 58 places, 44 transitions, 283 flow [2023-08-30 16:00:09,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=283, PETRI_PLACES=58, PETRI_TRANSITIONS=44} [2023-08-30 16:00:09,069 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 20 predicate places. [2023-08-30 16:00:09,069 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 44 transitions, 283 flow [2023-08-30 16:00:09,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:00:09,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:00:09,069 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:00:09,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 16:00:09,069 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 16:00:09,070 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:00:09,070 INFO L85 PathProgramCache]: Analyzing trace with hash -2126348470, now seen corresponding path program 1 times [2023-08-30 16:00:09,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:00:09,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457025686] [2023-08-30 16:00:09,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:00:09,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:00:09,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:00:09,114 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 16:00:09,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:00:09,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457025686] [2023-08-30 16:00:09,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457025686] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:00:09,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:00:09,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 16:00:09,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144906517] [2023-08-30 16:00:09,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:00:09,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 16:00:09,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:00:09,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 16:00:09,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 16:00:09,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 255 [2023-08-30 16:00:09,127 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 44 transitions, 283 flow. Second operand has 3 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:00:09,127 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:00:09,127 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 255 [2023-08-30 16:00:09,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:00:09,220 INFO L130 PetriNetUnfolder]: 302/669 cut-off events. [2023-08-30 16:00:09,220 INFO L131 PetriNetUnfolder]: For 876/878 co-relation queries the response was YES. [2023-08-30 16:00:09,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2126 conditions, 669 events. 302/669 cut-off events. For 876/878 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2937 event pairs, 58 based on Foata normal form. 2/657 useless extension candidates. Maximal degree in co-relation 2111. Up to 524 conditions per place. [2023-08-30 16:00:09,224 INFO L137 encePairwiseOnDemand]: 253/255 looper letters, 42 selfloop transitions, 1 changer transitions 0/53 dead transitions. [2023-08-30 16:00:09,224 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 53 transitions, 414 flow [2023-08-30 16:00:09,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 16:00:09,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 16:00:09,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 429 transitions. [2023-08-30 16:00:09,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5607843137254902 [2023-08-30 16:00:09,226 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 429 transitions. [2023-08-30 16:00:09,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 429 transitions. [2023-08-30 16:00:09,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:00:09,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 429 transitions. [2023-08-30 16:00:09,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:00:09,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:00:09,229 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:00:09,229 INFO L175 Difference]: Start difference. First operand has 58 places, 44 transitions, 283 flow. Second operand 3 states and 429 transitions. [2023-08-30 16:00:09,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 53 transitions, 414 flow [2023-08-30 16:00:09,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 53 transitions, 406 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 16:00:09,232 INFO L231 Difference]: Finished difference. Result has 58 places, 43 transitions, 272 flow [2023-08-30 16:00:09,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=272, PETRI_PLACES=58, PETRI_TRANSITIONS=43} [2023-08-30 16:00:09,233 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 20 predicate places. [2023-08-30 16:00:09,233 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 43 transitions, 272 flow [2023-08-30 16:00:09,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:00:09,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:00:09,233 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:00:09,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 16:00:09,234 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 16:00:09,234 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:00:09,234 INFO L85 PathProgramCache]: Analyzing trace with hash -495404400, now seen corresponding path program 1 times [2023-08-30 16:00:09,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:00:09,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399994224] [2023-08-30 16:00:09,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:00:09,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:00:09,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:00:09,278 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 16:00:09,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:00:09,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399994224] [2023-08-30 16:00:09,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399994224] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:00:09,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:00:09,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 16:00:09,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337649061] [2023-08-30 16:00:09,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:00:09,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 16:00:09,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:00:09,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 16:00:09,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 16:00:09,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 255 [2023-08-30 16:00:09,290 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 43 transitions, 272 flow. Second operand has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:00:09,290 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:00:09,290 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 255 [2023-08-30 16:00:09,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:00:09,368 INFO L130 PetriNetUnfolder]: 283/616 cut-off events. [2023-08-30 16:00:09,368 INFO L131 PetriNetUnfolder]: For 748/750 co-relation queries the response was YES. [2023-08-30 16:00:09,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1925 conditions, 616 events. 283/616 cut-off events. For 748/750 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2574 event pairs, 76 based on Foata normal form. 2/614 useless extension candidates. Maximal degree in co-relation 1909. Up to 371 conditions per place. [2023-08-30 16:00:09,372 INFO L137 encePairwiseOnDemand]: 251/255 looper letters, 34 selfloop transitions, 4 changer transitions 5/53 dead transitions. [2023-08-30 16:00:09,372 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 53 transitions, 403 flow [2023-08-30 16:00:09,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 16:00:09,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 16:00:09,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 427 transitions. [2023-08-30 16:00:09,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5581699346405229 [2023-08-30 16:00:09,374 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 427 transitions. [2023-08-30 16:00:09,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 427 transitions. [2023-08-30 16:00:09,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:00:09,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 427 transitions. [2023-08-30 16:00:09,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:00:09,377 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:00:09,378 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:00:09,378 INFO L175 Difference]: Start difference. First operand has 58 places, 43 transitions, 272 flow. Second operand 3 states and 427 transitions. [2023-08-30 16:00:09,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 53 transitions, 403 flow [2023-08-30 16:00:09,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 53 transitions, 402 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 16:00:09,381 INFO L231 Difference]: Finished difference. Result has 59 places, 41 transitions, 275 flow [2023-08-30 16:00:09,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=275, PETRI_PLACES=59, PETRI_TRANSITIONS=41} [2023-08-30 16:00:09,382 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 21 predicate places. [2023-08-30 16:00:09,382 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 41 transitions, 275 flow [2023-08-30 16:00:09,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:00:09,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:00:09,383 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:00:09,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 16:00:09,383 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 16:00:09,383 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:00:09,383 INFO L85 PathProgramCache]: Analyzing trace with hash -479499924, now seen corresponding path program 1 times [2023-08-30 16:00:09,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:00:09,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993352603] [2023-08-30 16:00:09,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:00:09,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:00:09,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:00:09,450 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 16:00:09,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:00:09,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993352603] [2023-08-30 16:00:09,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993352603] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 16:00:09,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899209081] [2023-08-30 16:00:09,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:00:09,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 16:00:09,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 16:00:09,453 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 16:00:09,487 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 16:00:09,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:00:09,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 16:00:09,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 16:00:09,608 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 16:00:09,608 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 16:00:09,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899209081] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:00:09,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 16:00:09,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-30 16:00:09,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089056690] [2023-08-30 16:00:09,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:00:09,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 16:00:09,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:00:09,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 16:00:09,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 16:00:09,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 255 [2023-08-30 16:00:09,620 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 41 transitions, 275 flow. Second operand has 4 states, 4 states have (on average 136.25) internal successors, (545), 4 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 16:00:09,620 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:00:09,620 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 255 [2023-08-30 16:00:09,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:00:09,702 INFO L130 PetriNetUnfolder]: 211/466 cut-off events. [2023-08-30 16:00:09,702 INFO L131 PetriNetUnfolder]: For 670/676 co-relation queries the response was YES. [2023-08-30 16:00:09,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1551 conditions, 466 events. 211/466 cut-off events. For 670/676 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1752 event pairs, 48 based on Foata normal form. 12/476 useless extension candidates. Maximal degree in co-relation 1535. Up to 326 conditions per place. [2023-08-30 16:00:09,703 INFO L137 encePairwiseOnDemand]: 252/255 looper letters, 0 selfloop transitions, 0 changer transitions 52/52 dead transitions. [2023-08-30 16:00:09,704 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 52 transitions, 391 flow [2023-08-30 16:00:09,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 16:00:09,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 16:00:09,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 563 transitions. [2023-08-30 16:00:09,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5519607843137255 [2023-08-30 16:00:09,706 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 563 transitions. [2023-08-30 16:00:09,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 563 transitions. [2023-08-30 16:00:09,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:00:09,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 563 transitions. [2023-08-30 16:00:09,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 140.75) internal successors, (563), 4 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:00:09,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 255.0) internal successors, (1275), 5 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:00:09,709 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 255.0) internal successors, (1275), 5 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:00:09,709 INFO L175 Difference]: Start difference. First operand has 59 places, 41 transitions, 275 flow. Second operand 4 states and 563 transitions. [2023-08-30 16:00:09,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 52 transitions, 391 flow [2023-08-30 16:00:09,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 52 transitions, 385 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 16:00:09,712 INFO L231 Difference]: Finished difference. Result has 58 places, 0 transitions, 0 flow [2023-08-30 16:00:09,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=58, PETRI_TRANSITIONS=0} [2023-08-30 16:00:09,712 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 20 predicate places. [2023-08-30 16:00:09,712 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 0 transitions, 0 flow [2023-08-30 16:00:09,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 136.25) internal successors, (545), 4 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 16:00:09,715 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 18 remaining) [2023-08-30 16:00:09,715 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2023-08-30 16:00:09,715 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2023-08-30 16:00:09,715 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2023-08-30 16:00:09,716 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2023-08-30 16:00:09,716 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2023-08-30 16:00:09,716 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2023-08-30 16:00:09,716 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2023-08-30 16:00:09,716 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 18 remaining) [2023-08-30 16:00:09,716 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining) [2023-08-30 16:00:09,716 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2023-08-30 16:00:09,717 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2023-08-30 16:00:09,717 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2023-08-30 16:00:09,717 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2023-08-30 16:00:09,717 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2023-08-30 16:00:09,717 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2023-08-30 16:00:09,717 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2023-08-30 16:00:09,717 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2023-08-30 16:00:09,722 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 16:00:09,921 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,SelfDestructingSolverStorable14 [2023-08-30 16:00:09,922 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:00:09,926 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 16:00:09,926 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 16:00:09,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 04:00:09 BasicIcfg [2023-08-30 16:00:09,928 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 16:00:09,929 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 16:00:09,929 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 16:00:09,929 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 16:00:09,929 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:59:58" (3/4) ... [2023-08-30 16:00:09,931 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 16:00:09,936 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-30 16:00:09,936 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-30 16:00:09,939 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2023-08-30 16:00:09,940 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-08-30 16:00:09,940 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 16:00:09,940 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 16:00:09,967 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 16:00:09,967 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 16:00:09,968 INFO L158 Benchmark]: Toolchain (without parser) took 12415.27ms. Allocated memory was 81.8MB in the beginning and 209.7MB in the end (delta: 127.9MB). Free memory was 58.5MB in the beginning and 160.9MB in the end (delta: -102.4MB). Peak memory consumption was 26.9MB. Max. memory is 16.1GB. [2023-08-30 16:00:09,968 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 62.9MB. Free memory is still 41.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 16:00:09,968 INFO L158 Benchmark]: CACSL2BoogieTranslator took 493.89ms. Allocated memory is still 81.8MB. Free memory was 58.3MB in the beginning and 53.9MB in the end (delta: 4.3MB). Peak memory consumption was 24.1MB. Max. memory is 16.1GB. [2023-08-30 16:00:09,968 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.65ms. Allocated memory is still 81.8MB. Free memory was 53.9MB in the beginning and 51.5MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 16:00:09,969 INFO L158 Benchmark]: Boogie Preprocessor took 26.34ms. Allocated memory is still 81.8MB. Free memory was 51.5MB in the beginning and 49.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 16:00:09,969 INFO L158 Benchmark]: RCFGBuilder took 468.44ms. Allocated memory is still 81.8MB. Free memory was 49.7MB in the beginning and 59.4MB in the end (delta: -9.6MB). Peak memory consumption was 21.1MB. Max. memory is 16.1GB. [2023-08-30 16:00:09,969 INFO L158 Benchmark]: TraceAbstraction took 11342.11ms. Allocated memory was 81.8MB in the beginning and 209.7MB in the end (delta: 127.9MB). Free memory was 59.0MB in the beginning and 163.5MB in the end (delta: -104.5MB). Peak memory consumption was 130.4MB. Max. memory is 16.1GB. [2023-08-30 16:00:09,969 INFO L158 Benchmark]: Witness Printer took 38.71ms. Allocated memory is still 209.7MB. Free memory was 163.5MB in the beginning and 160.9MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 16:00:09,970 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 62.9MB. Free memory is still 41.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 493.89ms. Allocated memory is still 81.8MB. Free memory was 58.3MB in the beginning and 53.9MB in the end (delta: 4.3MB). Peak memory consumption was 24.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.65ms. Allocated memory is still 81.8MB. Free memory was 53.9MB in the beginning and 51.5MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.34ms. Allocated memory is still 81.8MB. Free memory was 51.5MB in the beginning and 49.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 468.44ms. Allocated memory is still 81.8MB. Free memory was 49.7MB in the beginning and 59.4MB in the end (delta: -9.6MB). Peak memory consumption was 21.1MB. Max. memory is 16.1GB. * TraceAbstraction took 11342.11ms. Allocated memory was 81.8MB in the beginning and 209.7MB in the end (delta: 127.9MB). Free memory was 59.0MB in the beginning and 163.5MB in the end (delta: -104.5MB). Peak memory consumption was 130.4MB. Max. memory is 16.1GB. * Witness Printer took 38.71ms. Allocated memory is still 209.7MB. Free memory was 163.5MB in the beginning and 160.9MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.4s, 128 PlacesBefore, 38 PlacesAfterwards, 129 TransitionsBefore, 36 TransitionsAfterwards, 3074 CoEnabledTransitionPairs, 7 FixpointIterations, 50 TrivialSequentialCompositions, 49 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 3 ChoiceCompositions, 109 TotalNumberOfCompositions, 6805 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3827, independent: 3611, independent conditional: 0, independent unconditional: 3611, dependent: 216, dependent conditional: 0, dependent unconditional: 216, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1671, independent: 1627, independent conditional: 0, independent unconditional: 1627, dependent: 44, dependent conditional: 0, dependent unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3827, independent: 1984, independent conditional: 0, independent unconditional: 1984, dependent: 172, dependent conditional: 0, dependent unconditional: 172, unknown: 1671, unknown conditional: 0, unknown unconditional: 1671] , Statistics on independence cache: Total cache size (in pairs): 173, Positive cache size: 155, Positive conditional cache size: 0, Positive unconditional cache size: 155, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 882]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 882]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 885]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 885]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 897]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 897]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 900]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 900]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 198 locations, 18 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 11.1s, OverallIterations: 15, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 868 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 645 mSDsluCounter, 228 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 124 mSDsCounter, 113 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1624 IncrementalHoareTripleChecker+Invalid, 1737 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 113 mSolverCounterUnsat, 104 mSDtfsCounter, 1624 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 111 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=861occurred in iteration=4, InterpolantAutomatonStates: 65, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 256 NumberOfCodeBlocks, 256 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 257 ConstructedInterpolants, 0 QuantifiedInterpolants, 669 SizeOfPredicates, 4 NumberOfNonLiveVariables, 508 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 18 InterpolantComputations, 14 PerfectInterpolantSequences, 28/42 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 16:00:09,984 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE