./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/unroll-cond-3.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/unroll-cond-3.wvr.c -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 95e3bac7f28ae020b684175cea363a5866905518c289fbd40a07a7a3764acade --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 12:06:50,545 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 12:06:50,547 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 12:06:50,574 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 12:06:50,575 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 12:06:50,576 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 12:06:50,577 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 12:06:50,579 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 12:06:50,580 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 12:06:50,581 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 12:06:50,582 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 12:06:50,583 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 12:06:50,584 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 12:06:50,584 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 12:06:50,585 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 12:06:50,586 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 12:06:50,587 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 12:06:50,588 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 12:06:50,589 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 12:06:50,591 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 12:06:50,592 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 12:06:50,593 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 12:06:50,594 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 12:06:50,595 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 12:06:50,599 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 12:06:50,600 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 12:06:50,600 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 12:06:50,601 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 12:06:50,602 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 12:06:50,603 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 12:06:50,604 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 12:06:50,604 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 12:06:50,605 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 12:06:50,606 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 12:06:50,607 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 12:06:50,607 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 12:06:50,608 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 12:06:50,608 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 12:06:50,608 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 12:06:50,609 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 12:06:50,610 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 12:06:50,611 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 12:06:50,644 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 12:06:50,645 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 12:06:50,645 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 12:06:50,645 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 12:06:50,646 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 12:06:50,647 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 12:06:50,647 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 12:06:50,647 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 12:06:50,648 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 12:06:50,648 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 12:06:50,648 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 12:06:50,648 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 12:06:50,648 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 12:06:50,649 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 12:06:50,649 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 12:06:50,649 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 12:06:50,649 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 12:06:50,649 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 12:06:50,650 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 12:06:50,650 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 12:06:50,650 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 12:06:50,650 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 12:06:50,650 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 12:06:50,651 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 12:06:50,651 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 12:06:50,651 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 12:06:50,651 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 12:06:50,651 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 12:06:50,652 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 12:06:50,652 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 12:06:50,652 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 12:06:50,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 12:06:50,653 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 12:06:50,653 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 12:06:50,653 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 12:06:50,653 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 12:06:50,653 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 12:06:50,653 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 95e3bac7f28ae020b684175cea363a5866905518c289fbd40a07a7a3764acade Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 12:06:50,986 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 12:06:51,018 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 12:06:51,021 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 12:06:51,022 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 12:06:51,025 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 12:06:51,026 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/unroll-cond-3.wvr.c [2023-08-30 12:06:52,506 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 12:06:52,757 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 12:06:52,758 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-cond-3.wvr.c [2023-08-30 12:06:52,764 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45067756d/fe13c11117564c4da49b83a4379cc7ba/FLAGf3af12ac1 [2023-08-30 12:06:52,786 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45067756d/fe13c11117564c4da49b83a4379cc7ba [2023-08-30 12:06:52,790 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 12:06:52,791 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 12:06:52,793 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 12:06:52,794 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 12:06:52,797 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 12:06:52,799 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 12:06:52" (1/1) ... [2023-08-30 12:06:52,802 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f718a6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:06:52, skipping insertion in model container [2023-08-30 12:06:52,803 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 12:06:52" (1/1) ... [2023-08-30 12:06:52,809 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 12:06:52,833 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 12:06:53,050 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-cond-3.wvr.c[2641,2654] [2023-08-30 12:06:53,056 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 12:06:53,064 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 12:06:53,100 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-cond-3.wvr.c[2641,2654] [2023-08-30 12:06:53,108 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 12:06:53,148 INFO L208 MainTranslator]: Completed translation [2023-08-30 12:06:53,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:06:53 WrapperNode [2023-08-30 12:06:53,148 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 12:06:53,151 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 12:06:53,152 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 12:06:53,152 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 12:06:53,172 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:06:53" (1/1) ... [2023-08-30 12:06:53,194 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:06:53" (1/1) ... [2023-08-30 12:06:53,245 INFO L138 Inliner]: procedures = 24, calls = 37, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 167 [2023-08-30 12:06:53,245 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 12:06:53,247 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 12:06:53,247 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 12:06:53,248 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 12:06:53,256 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:06:53" (1/1) ... [2023-08-30 12:06:53,257 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:06:53" (1/1) ... [2023-08-30 12:06:53,271 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:06:53" (1/1) ... [2023-08-30 12:06:53,272 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:06:53" (1/1) ... [2023-08-30 12:06:53,293 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:06:53" (1/1) ... [2023-08-30 12:06:53,303 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:06:53" (1/1) ... [2023-08-30 12:06:53,305 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:06:53" (1/1) ... [2023-08-30 12:06:53,312 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:06:53" (1/1) ... [2023-08-30 12:06:53,314 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 12:06:53,315 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 12:06:53,315 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 12:06:53,315 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 12:06:53,316 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:06:53" (1/1) ... [2023-08-30 12:06:53,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 12:06:53,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:06:53,354 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 12:06:53,381 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 12:06:53,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 12:06:53,398 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 12:06:53,398 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 12:06:53,398 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 12:06:53,398 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 12:06:53,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 12:06:53,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 12:06:53,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 12:06:53,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 12:06:53,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 12:06:53,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 12:06:53,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 12:06:53,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 12:06:53,401 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 12:06:53,514 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 12:06:53,516 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 12:06:53,913 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 12:06:53,922 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 12:06:53,922 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-30 12:06:53,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 12:06:53 BoogieIcfgContainer [2023-08-30 12:06:53,925 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 12:06:53,926 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 12:06:53,927 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 12:06:53,929 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 12:06:53,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 12:06:52" (1/3) ... [2023-08-30 12:06:53,930 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c702624 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 12:06:53, skipping insertion in model container [2023-08-30 12:06:53,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:06:53" (2/3) ... [2023-08-30 12:06:53,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c702624 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 12:06:53, skipping insertion in model container [2023-08-30 12:06:53,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 12:06:53" (3/3) ... [2023-08-30 12:06:53,932 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-cond-3.wvr.c [2023-08-30 12:06:53,940 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 12:06:53,965 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 12:06:53,965 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-30 12:06:53,966 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 12:06:54,075 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 12:06:54,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 185 places, 196 transitions, 408 flow [2023-08-30 12:06:54,214 INFO L130 PetriNetUnfolder]: 18/194 cut-off events. [2023-08-30 12:06:54,214 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 12:06:54,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203 conditions, 194 events. 18/194 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 305 event pairs, 0 based on Foata normal form. 0/174 useless extension candidates. Maximal degree in co-relation 105. Up to 2 conditions per place. [2023-08-30 12:06:54,223 INFO L82 GeneralOperation]: Start removeDead. Operand has 185 places, 196 transitions, 408 flow [2023-08-30 12:06:54,240 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 59 places, 62 transitions, 124 flow [2023-08-30 12:06:54,244 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 12:06:54,255 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 59 places, 62 transitions, 124 flow [2023-08-30 12:06:54,258 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 59 places, 62 transitions, 124 flow [2023-08-30 12:06:54,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 59 places, 62 transitions, 124 flow [2023-08-30 12:06:54,289 INFO L130 PetriNetUnfolder]: 4/62 cut-off events. [2023-08-30 12:06:54,289 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 12:06:54,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 62 events. 4/62 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 9 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-08-30 12:06:54,291 INFO L119 LiptonReduction]: Number of co-enabled transitions 0 [2023-08-30 12:06:57,619 INFO L134 LiptonReduction]: Checked pairs total: 0 [2023-08-30 12:06:57,620 INFO L136 LiptonReduction]: Total number of compositions: 78 [2023-08-30 12:06:57,634 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 12:06:57,640 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;@2d5c638, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 12:06:57,641 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-30 12:06:57,643 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 12:06:57,643 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 12:06:57,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:06:57,644 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 12:06:57,644 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 12:06:57,649 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:06:57,649 INFO L85 PathProgramCache]: Analyzing trace with hash 21500, now seen corresponding path program 1 times [2023-08-30 12:06:57,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:06:57,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798282110] [2023-08-30 12:06:57,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:06:57,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:06:57,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:06:57,869 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 12:06:57,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:06:57,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798282110] [2023-08-30 12:06:57,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798282110] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:06:57,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:06:57,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 12:06:57,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917199636] [2023-08-30 12:06:57,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:06:57,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:06:57,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:06:57,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:06:57,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:06:57,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 274 [2023-08-30 12:06:57,937 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 4 places, 4 transitions, 8 flow. Second operand has 3 states, 3 states have (on average 175.66666666666666) internal successors, (527), 3 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:06:57,938 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:06:57,938 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 274 [2023-08-30 12:06:57,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:06:57,948 INFO L130 PetriNetUnfolder]: 1/3 cut-off events. [2023-08-30 12:06:57,948 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 12:06:57,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8 conditions, 3 events. 1/3 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 1 event pairs, 0 based on Foata normal form. 0/2 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2023-08-30 12:06:57,950 INFO L137 encePairwiseOnDemand]: 272/274 looper letters, 2 selfloop transitions, 1 changer transitions 0/3 dead transitions. [2023-08-30 12:06:57,950 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 5 places, 3 transitions, 12 flow [2023-08-30 12:06:57,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:06:57,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:06:57,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 529 transitions. [2023-08-30 12:06:57,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6435523114355232 [2023-08-30 12:06:57,964 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 529 transitions. [2023-08-30 12:06:57,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 529 transitions. [2023-08-30 12:06:57,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:06:57,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 529 transitions. [2023-08-30 12:06:57,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 176.33333333333334) internal successors, (529), 3 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:06:57,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 274.0) internal successors, (1096), 4 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:06:57,996 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 274.0) internal successors, (1096), 4 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:06:57,998 INFO L175 Difference]: Start difference. First operand has 4 places, 4 transitions, 8 flow. Second operand 3 states and 529 transitions. [2023-08-30 12:06:57,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 5 places, 3 transitions, 12 flow [2023-08-30 12:06:58,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 5 places, 3 transitions, 12 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 12:06:58,003 INFO L231 Difference]: Finished difference. Result has 5 places, 3 transitions, 8 flow [2023-08-30 12:06:58,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=6, PETRI_DIFFERENCE_MINUEND_PLACES=3, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=8, PETRI_PLACES=5, PETRI_TRANSITIONS=3} [2023-08-30 12:06:58,012 INFO L281 CegarLoopForPetriNet]: 4 programPoint places, 1 predicate places. [2023-08-30 12:06:58,013 INFO L495 AbstractCegarLoop]: Abstraction has has 5 places, 3 transitions, 8 flow [2023-08-30 12:06:58,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.66666666666666) internal successors, (527), 3 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:06:58,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:06:58,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 12:06:58,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 12:06:58,016 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 12:06:58,020 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:06:58,020 INFO L85 PathProgramCache]: Analyzing trace with hash 21516, now seen corresponding path program 1 times [2023-08-30 12:06:58,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:06:58,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575301062] [2023-08-30 12:06:58,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:06:58,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:06:58,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:06:58,134 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 12:06:58,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:06:58,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575301062] [2023-08-30 12:06:58,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575301062] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:06:58,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:06:58,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 12:06:58,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545068121] [2023-08-30 12:06:58,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:06:58,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:06:58,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:06:58,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:06:58,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:06:58,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 274 [2023-08-30 12:06:58,149 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 5 places, 3 transitions, 8 flow. Second operand has 3 states, 3 states have (on average 175.66666666666666) internal successors, (527), 3 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:06:58,149 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:06:58,149 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 274 [2023-08-30 12:06:58,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:06:58,158 INFO L130 PetriNetUnfolder]: 1/4 cut-off events. [2023-08-30 12:06:58,158 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 12:06:58,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12 conditions, 4 events. 1/4 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 1 event pairs, 0 based on Foata normal form. 0/3 useless extension candidates. Maximal degree in co-relation 6. Up to 4 conditions per place. [2023-08-30 12:06:58,159 INFO L137 encePairwiseOnDemand]: 271/274 looper letters, 2 selfloop transitions, 2 changer transitions 0/4 dead transitions. [2023-08-30 12:06:58,159 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 7 places, 4 transitions, 18 flow [2023-08-30 12:06:58,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:06:58,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:06:58,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 530 transitions. [2023-08-30 12:06:58,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6447688564476886 [2023-08-30 12:06:58,161 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 530 transitions. [2023-08-30 12:06:58,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 530 transitions. [2023-08-30 12:06:58,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:06:58,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 530 transitions. [2023-08-30 12:06:58,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 176.66666666666666) internal successors, (530), 3 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:06:58,165 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 274.0) internal successors, (1096), 4 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:06:58,166 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 274.0) internal successors, (1096), 4 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:06:58,166 INFO L175 Difference]: Start difference. First operand has 5 places, 3 transitions, 8 flow. Second operand 3 states and 530 transitions. [2023-08-30 12:06:58,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 7 places, 4 transitions, 18 flow [2023-08-30 12:06:58,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 6 places, 4 transitions, 17 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:06:58,168 INFO L231 Difference]: Finished difference. Result has 7 places, 4 transitions, 19 flow [2023-08-30 12:06:58,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=7, PETRI_DIFFERENCE_MINUEND_PLACES=4, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=19, PETRI_PLACES=7, PETRI_TRANSITIONS=4} [2023-08-30 12:06:58,169 INFO L281 CegarLoopForPetriNet]: 4 programPoint places, 3 predicate places. [2023-08-30 12:06:58,169 INFO L495 AbstractCegarLoop]: Abstraction has has 7 places, 4 transitions, 19 flow [2023-08-30 12:06:58,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.66666666666666) internal successors, (527), 3 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:06:58,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:06:58,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 12:06:58,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 12:06:58,171 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 12:06:58,171 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:06:58,176 INFO L85 PathProgramCache]: Analyzing trace with hash 668052, now seen corresponding path program 1 times [2023-08-30 12:06:58,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:06:58,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475731259] [2023-08-30 12:06:58,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:06:58,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:06:58,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:06:58,282 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:06:58,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:06:58,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475731259] [2023-08-30 12:06:58,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475731259] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:06:58,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267579229] [2023-08-30 12:06:58,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:06:58,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:06:58,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:06:58,293 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 12:06:58,309 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 12:06:58,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:06:58,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 12:06:58,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:06:58,424 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:06:58,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:06:58,466 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:06:58,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267579229] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:06:58,467 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:06:58,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2023-08-30 12:06:58,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739464258] [2023-08-30 12:06:58,467 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:06:58,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 12:06:58,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:06:58,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 12:06:58,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-30 12:06:58,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 274 [2023-08-30 12:06:58,505 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 7 places, 4 transitions, 19 flow. Second operand has 6 states, 6 states have (on average 176.0) internal successors, (1056), 6 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:06:58,505 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:06:58,505 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 274 [2023-08-30 12:06:58,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:06:58,553 INFO L130 PetriNetUnfolder]: 1/7 cut-off events. [2023-08-30 12:06:58,554 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 12:06:58,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27 conditions, 7 events. 1/7 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 1 event pairs, 0 based on Foata normal form. 0/6 useless extension candidates. Maximal degree in co-relation 19. Up to 7 conditions per place. [2023-08-30 12:06:58,554 INFO L137 encePairwiseOnDemand]: 271/274 looper letters, 2 selfloop transitions, 5 changer transitions 0/7 dead transitions. [2023-08-30 12:06:58,554 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 12 places, 7 transitions, 45 flow [2023-08-30 12:06:58,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 12:06:58,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 12:06:58,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1060 transitions. [2023-08-30 12:06:58,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6447688564476886 [2023-08-30 12:06:58,557 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1060 transitions. [2023-08-30 12:06:58,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1060 transitions. [2023-08-30 12:06:58,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:06:58,558 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1060 transitions. [2023-08-30 12:06:58,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 176.66666666666666) internal successors, (1060), 6 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:06:58,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 274.0) internal successors, (1918), 7 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:06:58,578 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 274.0) internal successors, (1918), 7 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:06:58,578 INFO L175 Difference]: Start difference. First operand has 7 places, 4 transitions, 19 flow. Second operand 6 states and 1060 transitions. [2023-08-30 12:06:58,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 12 places, 7 transitions, 45 flow [2023-08-30 12:06:58,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 11 places, 7 transitions, 41 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 12:06:58,579 INFO L231 Difference]: Finished difference. Result has 14 places, 7 transitions, 51 flow [2023-08-30 12:06:58,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=15, PETRI_DIFFERENCE_MINUEND_PLACES=6, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=51, PETRI_PLACES=14, PETRI_TRANSITIONS=7} [2023-08-30 12:06:58,580 INFO L281 CegarLoopForPetriNet]: 4 programPoint places, 10 predicate places. [2023-08-30 12:06:58,580 INFO L495 AbstractCegarLoop]: Abstraction has has 14 places, 7 transitions, 51 flow [2023-08-30 12:06:58,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 176.0) internal successors, (1056), 6 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:06:58,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:06:58,582 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 12:06:58,601 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 12:06:58,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:06:58,789 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 12:06:58,789 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:06:58,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1571850740, now seen corresponding path program 2 times [2023-08-30 12:06:58,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:06:58,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46693149] [2023-08-30 12:06:58,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:06:58,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:06:58,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:06:58,982 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:06:58,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:06:58,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46693149] [2023-08-30 12:06:58,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46693149] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:06:58,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171125731] [2023-08-30 12:06:58,988 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 12:06:58,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:06:58,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:06:58,990 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 12:06:58,993 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 12:06:59,062 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 12:06:59,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 12:06:59,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 12:06:59,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:06:59,091 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 12:06:59,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:06:59,118 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 12:06:59,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171125731] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:06:59,119 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:06:59,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 2, 2] total 7 [2023-08-30 12:06:59,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281464963] [2023-08-30 12:06:59,119 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:06:59,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 12:06:59,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:06:59,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 12:06:59,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-08-30 12:06:59,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 274 [2023-08-30 12:06:59,173 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 14 places, 7 transitions, 51 flow. Second operand has 9 states, 9 states have (on average 173.11111111111111) internal successors, (1558), 9 states have internal predecessors, (1558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:06:59,173 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:06:59,173 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 274 [2023-08-30 12:06:59,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:06:59,241 INFO L130 PetriNetUnfolder]: 1/7 cut-off events. [2023-08-30 12:06:59,241 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-08-30 12:06:59,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 7 events. 1/7 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 1 event pairs, 0 based on Foata normal form. 2/9 useless extension candidates. Maximal degree in co-relation 26. Up to 7 conditions per place. [2023-08-30 12:06:59,241 INFO L137 encePairwiseOnDemand]: 271/274 looper letters, 0 selfloop transitions, 0 changer transitions 7/7 dead transitions. [2023-08-30 12:06:59,241 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 7 transitions, 61 flow [2023-08-30 12:06:59,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 12:06:59,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 12:06:59,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1385 transitions. [2023-08-30 12:06:59,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6318430656934306 [2023-08-30 12:06:59,245 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1385 transitions. [2023-08-30 12:06:59,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1385 transitions. [2023-08-30 12:06:59,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:06:59,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1385 transitions. [2023-08-30 12:06:59,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 173.125) internal successors, (1385), 8 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:06:59,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 274.0) internal successors, (2466), 9 states have internal predecessors, (2466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:06:59,254 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 274.0) internal successors, (2466), 9 states have internal predecessors, (2466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:06:59,254 INFO L175 Difference]: Start difference. First operand has 14 places, 7 transitions, 51 flow. Second operand 8 states and 1385 transitions. [2023-08-30 12:06:59,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 7 transitions, 61 flow [2023-08-30 12:06:59,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 7 transitions, 35 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-08-30 12:06:59,256 INFO L231 Difference]: Finished difference. Result has 15 places, 0 transitions, 0 flow [2023-08-30 12:06:59,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=17, PETRI_DIFFERENCE_MINUEND_PLACES=8, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=15, PETRI_TRANSITIONS=0} [2023-08-30 12:06:59,258 INFO L281 CegarLoopForPetriNet]: 4 programPoint places, 11 predicate places. [2023-08-30 12:06:59,258 INFO L495 AbstractCegarLoop]: Abstraction has has 15 places, 0 transitions, 0 flow [2023-08-30 12:06:59,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 173.11111111111111) internal successors, (1558), 9 states have internal predecessors, (1558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:06:59,262 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2023-08-30 12:06:59,263 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2023-08-30 12:06:59,263 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-30 12:06:59,263 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-30 12:06:59,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 12:06:59,469 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,SelfDestructingSolverStorable3 [2023-08-30 12:06:59,470 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2023-08-30 12:06:59,472 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 12:06:59,472 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 12:06:59,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 12:06:59 BasicIcfg [2023-08-30 12:06:59,476 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 12:06:59,476 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 12:06:59,476 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 12:06:59,476 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 12:06:59,477 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 12:06:53" (3/4) ... [2023-08-30 12:06:59,478 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 12:06:59,483 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-30 12:06:59,484 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-30 12:06:59,487 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2023-08-30 12:06:59,487 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 12:06:59,488 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 12:06:59,488 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 12:06:59,533 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 12:06:59,534 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 12:06:59,534 INFO L158 Benchmark]: Toolchain (without parser) took 6743.24ms. Allocated memory was 69.2MB in the beginning and 100.7MB in the end (delta: 31.5MB). Free memory was 46.6MB in the beginning and 40.5MB in the end (delta: 6.1MB). Peak memory consumption was 38.2MB. Max. memory is 16.1GB. [2023-08-30 12:06:59,534 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 54.5MB. Free memory is still 33.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 12:06:59,535 INFO L158 Benchmark]: CACSL2BoogieTranslator took 355.32ms. Allocated memory is still 69.2MB. Free memory was 46.4MB in the beginning and 34.9MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-08-30 12:06:59,535 INFO L158 Benchmark]: Boogie Procedure Inliner took 94.16ms. Allocated memory is still 69.2MB. Free memory was 34.7MB in the beginning and 32.8MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 12:06:59,535 INFO L158 Benchmark]: Boogie Preprocessor took 67.48ms. Allocated memory is still 69.2MB. Free memory was 32.8MB in the beginning and 48.7MB in the end (delta: -15.9MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. [2023-08-30 12:06:59,536 INFO L158 Benchmark]: RCFGBuilder took 609.95ms. Allocated memory is still 69.2MB. Free memory was 48.7MB in the beginning and 30.9MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-08-30 12:06:59,536 INFO L158 Benchmark]: TraceAbstraction took 5549.22ms. Allocated memory was 69.2MB in the beginning and 100.7MB in the end (delta: 31.5MB). Free memory was 30.1MB in the beginning and 43.4MB in the end (delta: -13.3MB). Peak memory consumption was 18.2MB. Max. memory is 16.1GB. [2023-08-30 12:06:59,536 INFO L158 Benchmark]: Witness Printer took 57.62ms. Allocated memory is still 100.7MB. Free memory was 43.4MB in the beginning and 40.5MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 12:06:59,538 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 54.5MB. Free memory is still 33.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 355.32ms. Allocated memory is still 69.2MB. Free memory was 46.4MB in the beginning and 34.9MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 94.16ms. Allocated memory is still 69.2MB. Free memory was 34.7MB in the beginning and 32.8MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 67.48ms. Allocated memory is still 69.2MB. Free memory was 32.8MB in the beginning and 48.7MB in the end (delta: -15.9MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. * RCFGBuilder took 609.95ms. Allocated memory is still 69.2MB. Free memory was 48.7MB in the beginning and 30.9MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 5549.22ms. Allocated memory was 69.2MB in the beginning and 100.7MB in the end (delta: 31.5MB). Free memory was 30.1MB in the beginning and 43.4MB in the end (delta: -13.3MB). Peak memory consumption was 18.2MB. Max. memory is 16.1GB. * Witness Printer took 57.62ms. Allocated memory is still 100.7MB. Free memory was 43.4MB in the beginning and 40.5MB in the end (delta: 2.9MB). 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: 3.4s, 59 PlacesBefore, 4 PlacesAfterwards, 62 TransitionsBefore, 4 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 7 FixpointIterations, 57 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 18 TrivialYvCompositions, 0 ConcurrentYvCompositions, 3 ChoiceCompositions, 78 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 109]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 109]: 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, 265 locations, 4 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: 5.4s, OverallIterations: 4, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 108 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 66 mSDsluCounter, 39 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 25 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 127 IncrementalHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 14 mSDtfsCounter, 127 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred in iteration=3, InterpolantAutomatonStates: 20, 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 69 SizeOfPredicates, 3 NumberOfNonLiveVariables, 229 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 12/33 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 12:06:59,564 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE