./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/unroll-cond-2.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-2.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 99c42ba3d1f6c70520bbcf0a3136609166f98fb21063bda215f7779ff0bb27ca --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 12:06:36,245 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 12:06:36,247 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 12:06:36,293 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 12:06:36,294 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 12:06:36,297 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 12:06:36,299 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 12:06:36,302 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 12:06:36,304 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 12:06:36,308 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 12:06:36,309 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 12:06:36,311 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 12:06:36,312 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 12:06:36,313 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 12:06:36,315 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 12:06:36,318 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 12:06:36,319 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 12:06:36,320 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 12:06:36,322 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 12:06:36,326 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 12:06:36,328 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 12:06:36,329 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 12:06:36,329 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 12:06:36,330 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 12:06:36,337 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 12:06:36,337 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 12:06:36,338 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 12:06:36,340 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 12:06:36,340 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 12:06:36,341 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 12:06:36,344 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 12:06:36,345 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 12:06:36,349 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 12:06:36,350 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 12:06:36,351 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 12:06:36,351 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 12:06:36,352 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 12:06:36,352 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 12:06:36,352 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 12:06:36,353 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 12:06:36,354 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 12:06:36,370 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 12:06:36,413 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 12:06:36,413 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 12:06:36,414 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 12:06:36,414 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 12:06:36,415 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 12:06:36,416 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 12:06:36,427 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 12:06:36,427 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 12:06:36,427 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 12:06:36,428 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 12:06:36,428 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 12:06:36,428 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 12:06:36,428 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 12:06:36,428 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 12:06:36,428 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 12:06:36,429 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 12:06:36,429 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 12:06:36,429 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 12:06:36,429 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 12:06:36,429 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 12:06:36,429 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 12:06:36,430 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 12:06:36,430 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 12:06:36,430 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 12:06:36,430 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 12:06:36,430 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 12:06:36,430 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 12:06:36,431 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 12:06:36,431 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 12:06:36,431 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 12:06:36,431 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 12:06:36,431 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 12:06:36,432 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 12:06:36,432 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 12:06:36,432 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 12:06:36,432 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 12:06:36,432 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 12:06:36,432 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 99c42ba3d1f6c70520bbcf0a3136609166f98fb21063bda215f7779ff0bb27ca Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 12:06:36,787 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 12:06:36,818 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 12:06:36,821 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 12:06:36,822 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 12:06:36,823 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 12:06:36,829 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/unroll-cond-2.wvr.c [2023-08-30 12:06:38,385 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 12:06:38,750 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 12:06:38,751 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-cond-2.wvr.c [2023-08-30 12:06:38,758 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/813f950ba/72fa99e105cf472f8aaed47c87a37f4e/FLAG7f7d19b72 [2023-08-30 12:06:38,793 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/813f950ba/72fa99e105cf472f8aaed47c87a37f4e [2023-08-30 12:06:38,796 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 12:06:38,811 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 12:06:38,812 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 12:06:38,812 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 12:06:38,815 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 12:06:38,816 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 12:06:38" (1/1) ... [2023-08-30 12:06:38,818 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a60dcd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:06:38, skipping insertion in model container [2023-08-30 12:06:38,818 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 12:06:38" (1/1) ... [2023-08-30 12:06:38,823 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 12:06:38,873 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 12:06:39,075 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-2.wvr.c[2474,2487] [2023-08-30 12:06:39,089 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 12:06:39,100 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 12:06:39,140 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-2.wvr.c[2474,2487] [2023-08-30 12:06:39,145 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 12:06:39,159 INFO L208 MainTranslator]: Completed translation [2023-08-30 12:06:39,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:06:39 WrapperNode [2023-08-30 12:06:39,160 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 12:06:39,162 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 12:06:39,162 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 12:06:39,162 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 12:06:39,169 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:06:39" (1/1) ... [2023-08-30 12:06:39,185 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:06:39" (1/1) ... [2023-08-30 12:06:39,266 INFO L138 Inliner]: procedures = 24, calls = 33, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 146 [2023-08-30 12:06:39,267 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 12:06:39,267 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 12:06:39,267 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 12:06:39,267 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 12:06:39,276 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:06:39" (1/1) ... [2023-08-30 12:06:39,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:06:39" (1/1) ... [2023-08-30 12:06:39,291 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:06:39" (1/1) ... [2023-08-30 12:06:39,292 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:06:39" (1/1) ... [2023-08-30 12:06:39,306 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:06:39" (1/1) ... [2023-08-30 12:06:39,309 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:06:39" (1/1) ... [2023-08-30 12:06:39,311 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:06:39" (1/1) ... [2023-08-30 12:06:39,312 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:06:39" (1/1) ... [2023-08-30 12:06:39,323 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 12:06:39,328 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 12:06:39,329 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 12:06:39,330 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 12:06:39,331 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:06:39" (1/1) ... [2023-08-30 12:06:39,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 12:06:39,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:06:39,366 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 12:06:39,386 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 12:06:39,411 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 12:06:39,411 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 12:06:39,412 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 12:06:39,412 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 12:06:39,412 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 12:06:39,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 12:06:39,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 12:06:39,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 12:06:39,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 12:06:39,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 12:06:39,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 12:06:39,413 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 12:06:39,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 12:06:39,414 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 12:06:39,547 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 12:06:39,549 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 12:06:39,913 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 12:06:39,926 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 12:06:39,926 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-30 12:06:39,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 12:06:39 BoogieIcfgContainer [2023-08-30 12:06:39,929 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 12:06:39,931 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 12:06:39,931 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 12:06:39,936 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 12:06:39,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 12:06:38" (1/3) ... [2023-08-30 12:06:39,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@649c4982 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 12:06:39, skipping insertion in model container [2023-08-30 12:06:39,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:06:39" (2/3) ... [2023-08-30 12:06:39,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@649c4982 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 12:06:39, skipping insertion in model container [2023-08-30 12:06:39,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 12:06:39" (3/3) ... [2023-08-30 12:06:39,939 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-cond-2.wvr.c [2023-08-30 12:06:39,949 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 12:06:39,958 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 12:06:39,959 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-30 12:06:39,959 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 12:06:40,070 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 12:06:40,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 160 places, 168 transitions, 352 flow [2023-08-30 12:06:40,291 INFO L130 PetriNetUnfolder]: 15/166 cut-off events. [2023-08-30 12:06:40,291 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 12:06:40,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175 conditions, 166 events. 15/166 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 214 event pairs, 0 based on Foata normal form. 0/149 useless extension candidates. Maximal degree in co-relation 98. Up to 2 conditions per place. [2023-08-30 12:06:40,298 INFO L82 GeneralOperation]: Start removeDead. Operand has 160 places, 168 transitions, 352 flow [2023-08-30 12:06:40,329 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 59 places, 62 transitions, 124 flow [2023-08-30 12:06:40,335 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 12:06:40,347 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 59 places, 62 transitions, 124 flow [2023-08-30 12:06:40,365 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 59 places, 62 transitions, 124 flow [2023-08-30 12:06:40,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 59 places, 62 transitions, 124 flow [2023-08-30 12:06:40,424 INFO L130 PetriNetUnfolder]: 4/62 cut-off events. [2023-08-30 12:06:40,425 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 12:06:40,425 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 12:06:40,426 INFO L119 LiptonReduction]: Number of co-enabled transitions 0 [2023-08-30 12:06:43,945 INFO L134 LiptonReduction]: Checked pairs total: 0 [2023-08-30 12:06:43,945 INFO L136 LiptonReduction]: Total number of compositions: 75 [2023-08-30 12:06:43,959 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 12:06:43,977 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;@51720fc5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 12:06:43,978 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-30 12:06:43,980 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 12:06:43,980 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 12:06:43,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:06:43,981 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 12:06:43,981 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 12:06:43,985 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:06:43,986 INFO L85 PathProgramCache]: Analyzing trace with hash 18064, now seen corresponding path program 1 times [2023-08-30 12:06:43,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:06:43,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070527032] [2023-08-30 12:06:43,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:06:43,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:06:44,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:06:44,197 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 12:06:44,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:06:44,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070527032] [2023-08-30 12:06:44,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070527032] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:06:44,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:06:44,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 12:06:44,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862595526] [2023-08-30 12:06:44,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:06:44,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:06:44,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:06:44,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:06:44,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:06:44,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 243 [2023-08-30 12:06:44,270 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 4 places, 4 transitions, 8 flow. Second operand has 3 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:06:44,271 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:06:44,271 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 243 [2023-08-30 12:06:44,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:06:44,282 INFO L130 PetriNetUnfolder]: 1/3 cut-off events. [2023-08-30 12:06:44,282 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 12:06:44,282 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 12:06:44,284 INFO L137 encePairwiseOnDemand]: 241/243 looper letters, 2 selfloop transitions, 1 changer transitions 0/3 dead transitions. [2023-08-30 12:06:44,284 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 5 places, 3 transitions, 12 flow [2023-08-30 12:06:44,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:06:44,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:06:44,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 445 transitions. [2023-08-30 12:06:44,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6104252400548696 [2023-08-30 12:06:44,299 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 445 transitions. [2023-08-30 12:06:44,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 445 transitions. [2023-08-30 12:06:44,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:06:44,303 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 445 transitions. [2023-08-30 12:06:44,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:06:44,312 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:06:44,313 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:06:44,315 INFO L175 Difference]: Start difference. First operand has 4 places, 4 transitions, 8 flow. Second operand 3 states and 445 transitions. [2023-08-30 12:06:44,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 5 places, 3 transitions, 12 flow [2023-08-30 12:06:44,317 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 12:06:44,317 INFO L231 Difference]: Finished difference. Result has 5 places, 3 transitions, 8 flow [2023-08-30 12:06:44,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, 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 12:06:44,323 INFO L281 CegarLoopForPetriNet]: 4 programPoint places, 1 predicate places. [2023-08-30 12:06:44,323 INFO L495 AbstractCegarLoop]: Abstraction has has 5 places, 3 transitions, 8 flow [2023-08-30 12:06:44,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:06:44,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:06:44,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 12:06:44,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 12:06:44,326 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 12:06:44,329 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:06:44,330 INFO L85 PathProgramCache]: Analyzing trace with hash 18297, now seen corresponding path program 1 times [2023-08-30 12:06:44,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:06:44,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842945490] [2023-08-30 12:06:44,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:06:44,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:06:44,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:06:44,407 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 12:06:44,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:06:44,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842945490] [2023-08-30 12:06:44,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842945490] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:06:44,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:06:44,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 12:06:44,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705044871] [2023-08-30 12:06:44,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:06:44,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:06:44,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:06:44,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:06:44,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:06:44,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 243 [2023-08-30 12:06:44,422 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 5 places, 3 transitions, 8 flow. Second operand has 3 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:06:44,422 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:06:44,422 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 243 [2023-08-30 12:06:44,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:06:44,431 INFO L130 PetriNetUnfolder]: 1/4 cut-off events. [2023-08-30 12:06:44,431 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 12:06:44,432 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 12:06:44,432 INFO L137 encePairwiseOnDemand]: 240/243 looper letters, 2 selfloop transitions, 2 changer transitions 0/4 dead transitions. [2023-08-30 12:06:44,432 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 7 places, 4 transitions, 18 flow [2023-08-30 12:06:44,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:06:44,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:06:44,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 446 transitions. [2023-08-30 12:06:44,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6117969821673526 [2023-08-30 12:06:44,450 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 446 transitions. [2023-08-30 12:06:44,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 446 transitions. [2023-08-30 12:06:44,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:06:44,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 446 transitions. [2023-08-30 12:06:44,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:06:44,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:06:44,455 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:06:44,455 INFO L175 Difference]: Start difference. First operand has 5 places, 3 transitions, 8 flow. Second operand 3 states and 446 transitions. [2023-08-30 12:06:44,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 7 places, 4 transitions, 18 flow [2023-08-30 12:06:44,456 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 12:06:44,457 INFO L231 Difference]: Finished difference. Result has 7 places, 4 transitions, 19 flow [2023-08-30 12:06:44,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, 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 12:06:44,458 INFO L281 CegarLoopForPetriNet]: 4 programPoint places, 3 predicate places. [2023-08-30 12:06:44,458 INFO L495 AbstractCegarLoop]: Abstraction has has 7 places, 4 transitions, 19 flow [2023-08-30 12:06:44,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:06:44,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:06:44,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 12:06:44,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 12:06:44,459 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 12:06:44,460 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:06:44,460 INFO L85 PathProgramCache]: Analyzing trace with hash 569508, now seen corresponding path program 1 times [2023-08-30 12:06:44,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:06:44,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268245681] [2023-08-30 12:06:44,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:06:44,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:06:44,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:06:44,544 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 12:06:44,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:06:44,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268245681] [2023-08-30 12:06:44,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268245681] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:06:44,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164300109] [2023-08-30 12:06:44,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:06:44,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:06:44,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:06:44,549 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 12:06:44,577 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 12:06:44,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:06:44,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 12:06:44,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:06:44,706 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 12:06:44,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:06:44,739 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 12:06:44,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164300109] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:06:44,740 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:06:44,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2023-08-30 12:06:44,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870167758] [2023-08-30 12:06:44,740 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:06:44,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 12:06:44,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:06:44,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 12:06:44,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-30 12:06:44,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 243 [2023-08-30 12:06:44,771 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 7 places, 4 transitions, 19 flow. Second operand has 6 states, 6 states have (on average 147.0) internal successors, (882), 6 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:06:44,771 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:06:44,771 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 243 [2023-08-30 12:06:44,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:06:44,786 INFO L130 PetriNetUnfolder]: 1/7 cut-off events. [2023-08-30 12:06:44,800 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 12:06:44,801 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 12:06:44,801 INFO L137 encePairwiseOnDemand]: 240/243 looper letters, 2 selfloop transitions, 5 changer transitions 0/7 dead transitions. [2023-08-30 12:06:44,801 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 12 places, 7 transitions, 45 flow [2023-08-30 12:06:44,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 12:06:44,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 12:06:44,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 886 transitions. [2023-08-30 12:06:44,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.607681755829904 [2023-08-30 12:06:44,804 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 886 transitions. [2023-08-30 12:06:44,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 886 transitions. [2023-08-30 12:06:44,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:06:44,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 886 transitions. [2023-08-30 12:06:44,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 147.66666666666666) internal successors, (886), 6 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:06:44,825 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 243.0) internal successors, (1701), 7 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:06:44,826 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 243.0) internal successors, (1701), 7 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:06:44,826 INFO L175 Difference]: Start difference. First operand has 7 places, 4 transitions, 19 flow. Second operand 6 states and 886 transitions. [2023-08-30 12:06:44,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 12 places, 7 transitions, 45 flow [2023-08-30 12:06:44,827 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 12:06:44,827 INFO L231 Difference]: Finished difference. Result has 14 places, 7 transitions, 51 flow [2023-08-30 12:06:44,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, 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 12:06:44,828 INFO L281 CegarLoopForPetriNet]: 4 programPoint places, 10 predicate places. [2023-08-30 12:06:44,828 INFO L495 AbstractCegarLoop]: Abstraction has has 14 places, 7 transitions, 51 flow [2023-08-30 12:06:44,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 147.0) internal successors, (882), 6 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:06:44,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:06:44,829 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 12:06:44,840 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 12:06:45,030 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 12:06:45,030 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 12:06:45,031 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:06:45,031 INFO L85 PathProgramCache]: Analyzing trace with hash -211371463, now seen corresponding path program 2 times [2023-08-30 12:06:45,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:06:45,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212859543] [2023-08-30 12:06:45,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:06:45,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:06:45,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:06:45,334 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 12:06:45,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:06:45,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212859543] [2023-08-30 12:06:45,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212859543] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:06:45,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008203563] [2023-08-30 12:06:45,335 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 12:06:45,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:06:45,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:06:45,337 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 12:06:45,340 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 12:06:45,444 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 12:06:45,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 12:06:45,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 12:06:45,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:06:45,506 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 12:06:45,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:06:45,580 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 12:06:45,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008203563] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:06:45,580 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:06:45,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-08-30 12:06:45,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654046713] [2023-08-30 12:06:45,581 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:06:45,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 12:06:45,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:06:45,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 12:06:45,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-08-30 12:06:45,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 243 [2023-08-30 12:06:45,626 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 14 places, 7 transitions, 51 flow. Second operand has 12 states, 12 states have (on average 147.0) internal successors, (1764), 12 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:06:45,626 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:06:45,627 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 243 [2023-08-30 12:06:45,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:06:45,663 INFO L130 PetriNetUnfolder]: 1/13 cut-off events. [2023-08-30 12:06:45,663 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2023-08-30 12:06:45,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 13 events. 1/13 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 1 event pairs, 0 based on Foata normal form. 6/19 useless extension candidates. Maximal degree in co-relation 52. Up to 13 conditions per place. [2023-08-30 12:06:45,664 INFO L137 encePairwiseOnDemand]: 240/243 looper letters, 2 selfloop transitions, 11 changer transitions 0/13 dead transitions. [2023-08-30 12:06:45,664 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 13 transitions, 113 flow [2023-08-30 12:06:45,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 12:06:45,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 12:06:45,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1771 transitions. [2023-08-30 12:06:45,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6073388203017832 [2023-08-30 12:06:45,669 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1771 transitions. [2023-08-30 12:06:45,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1771 transitions. [2023-08-30 12:06:45,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:06:45,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1771 transitions. [2023-08-30 12:06:45,674 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 147.58333333333334) internal successors, (1771), 12 states have internal predecessors, (1771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:06:45,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 243.0) internal successors, (3159), 13 states have internal predecessors, (3159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:06:45,680 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 243.0) internal successors, (3159), 13 states have internal predecessors, (3159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:06:45,680 INFO L175 Difference]: Start difference. First operand has 14 places, 7 transitions, 51 flow. Second operand 12 states and 1771 transitions. [2023-08-30 12:06:45,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 13 transitions, 113 flow [2023-08-30 12:06:45,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 13 transitions, 99 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 12:06:45,683 INFO L231 Difference]: Finished difference. Result has 30 places, 13 transitions, 121 flow [2023-08-30 12:06:45,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=37, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=121, PETRI_PLACES=30, PETRI_TRANSITIONS=13} [2023-08-30 12:06:45,683 INFO L281 CegarLoopForPetriNet]: 4 programPoint places, 26 predicate places. [2023-08-30 12:06:45,684 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 13 transitions, 121 flow [2023-08-30 12:06:45,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 147.0) internal successors, (1764), 12 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:06:45,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:06:45,685 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1] [2023-08-30 12:06:45,692 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 12:06:45,891 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 12:06:45,892 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 12:06:45,892 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:06:45,892 INFO L85 PathProgramCache]: Analyzing trace with hash 915903065, now seen corresponding path program 3 times [2023-08-30 12:06:45,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:06:45,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714096228] [2023-08-30 12:06:45,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:06:45,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:06:45,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:06:46,331 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:06:46,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:06:46,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714096228] [2023-08-30 12:06:46,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714096228] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:06:46,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111310961] [2023-08-30 12:06:46,332 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 12:06:46,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:06:46,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:06:46,334 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:06:46,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 12:06:46,421 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-30 12:06:46,421 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 12:06:46,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 12:06:46,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:06:46,473 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-30 12:06:46,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:06:46,512 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-30 12:06:46,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111310961] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:06:46,513 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:06:46,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 2, 2] total 13 [2023-08-30 12:06:46,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806552327] [2023-08-30 12:06:46,514 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:06:46,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 12:06:46,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:06:46,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 12:06:46,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2023-08-30 12:06:46,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 243 [2023-08-30 12:06:46,607 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 13 transitions, 121 flow. Second operand has 15 states, 15 states have (on average 146.06666666666666) internal successors, (2191), 15 states have internal predecessors, (2191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:06:46,607 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:06:46,607 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 243 [2023-08-30 12:06:46,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:06:46,762 INFO L130 PetriNetUnfolder]: 1/13 cut-off events. [2023-08-30 12:06:46,762 INFO L131 PetriNetUnfolder]: For 67/67 co-relation queries the response was YES. [2023-08-30 12:06:46,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 13 events. 1/13 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 1 event pairs, 0 based on Foata normal form. 2/15 useless extension candidates. Maximal degree in co-relation 62. Up to 10 conditions per place. [2023-08-30 12:06:46,763 INFO L137 encePairwiseOnDemand]: 240/243 looper letters, 0 selfloop transitions, 0 changer transitions 13/13 dead transitions. [2023-08-30 12:06:46,763 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 13 transitions, 133 flow [2023-08-30 12:06:46,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 12:06:46,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 12:06:46,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2045 transitions. [2023-08-30 12:06:46,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6011169900058789 [2023-08-30 12:06:46,767 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2045 transitions. [2023-08-30 12:06:46,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2045 transitions. [2023-08-30 12:06:46,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:06:46,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2045 transitions. [2023-08-30 12:06:46,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 146.07142857142858) internal successors, (2045), 14 states have internal predecessors, (2045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:06:46,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 243.0) internal successors, (3645), 15 states have internal predecessors, (3645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:06:46,779 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 243.0) internal successors, (3645), 15 states have internal predecessors, (3645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:06:46,779 INFO L175 Difference]: Start difference. First operand has 30 places, 13 transitions, 121 flow. Second operand 14 states and 2045 transitions. [2023-08-30 12:06:46,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 13 transitions, 133 flow [2023-08-30 12:06:46,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 13 transitions, 59 flow, removed 22 selfloop flow, removed 15 redundant places. [2023-08-30 12:06:46,781 INFO L231 Difference]: Finished difference. Result has 27 places, 0 transitions, 0 flow [2023-08-30 12:06:46,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=29, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=0, PETRI_PLACES=27, PETRI_TRANSITIONS=0} [2023-08-30 12:06:46,782 INFO L281 CegarLoopForPetriNet]: 4 programPoint places, 23 predicate places. [2023-08-30 12:06:46,782 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 0 transitions, 0 flow [2023-08-30 12:06:46,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 146.06666666666666) internal successors, (2191), 15 states have internal predecessors, (2191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:06:46,785 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2023-08-30 12:06:46,786 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2023-08-30 12:06:46,786 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-30 12:06:46,786 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-30 12:06:46,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 12:06:46,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:06:46,997 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2023-08-30 12:06:47,000 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 12:06:47,000 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 12:06:47,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 12:06:47 BasicIcfg [2023-08-30 12:06:47,003 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 12:06:47,004 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 12:06:47,004 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 12:06:47,004 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 12:06:47,005 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 12:06:39" (3/4) ... [2023-08-30 12:06:47,007 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 12:06:47,012 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-30 12:06:47,013 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-30 12:06:47,016 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2023-08-30 12:06:47,016 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 12:06:47,017 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 12:06:47,017 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 12:06:47,051 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 12:06:47,052 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 12:06:47,053 INFO L158 Benchmark]: Toolchain (without parser) took 8242.11ms. Allocated memory was 62.9MB in the beginning and 113.2MB in the end (delta: 50.3MB). Free memory was 41.3MB in the beginning and 61.8MB in the end (delta: -20.5MB). Peak memory consumption was 32.7MB. Max. memory is 16.1GB. [2023-08-30 12:06:47,053 INFO L158 Benchmark]: CDTParser took 0.43ms. Allocated memory is still 48.2MB. Free memory was 26.5MB in the beginning and 26.4MB in the end (delta: 54.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 12:06:47,053 INFO L158 Benchmark]: CACSL2BoogieTranslator took 347.77ms. Allocated memory is still 62.9MB. Free memory was 41.1MB in the beginning and 29.7MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-08-30 12:06:47,054 INFO L158 Benchmark]: Boogie Procedure Inliner took 105.25ms. Allocated memory is still 62.9MB. Free memory was 29.7MB in the beginning and 43.9MB in the end (delta: -14.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 12:06:47,054 INFO L158 Benchmark]: Boogie Preprocessor took 59.70ms. Allocated memory is still 62.9MB. Free memory was 43.9MB in the beginning and 42.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 12:06:47,054 INFO L158 Benchmark]: RCFGBuilder took 601.26ms. Allocated memory was 62.9MB in the beginning and 77.6MB in the end (delta: 14.7MB). Free memory was 42.3MB in the beginning and 55.3MB in the end (delta: -13.1MB). Peak memory consumption was 18.6MB. Max. memory is 16.1GB. [2023-08-30 12:06:47,055 INFO L158 Benchmark]: TraceAbstraction took 7072.49ms. Allocated memory was 77.6MB in the beginning and 113.2MB in the end (delta: 35.7MB). Free memory was 54.6MB in the beginning and 64.9MB in the end (delta: -10.3MB). Peak memory consumption was 24.0MB. Max. memory is 16.1GB. [2023-08-30 12:06:47,055 INFO L158 Benchmark]: Witness Printer took 48.15ms. Allocated memory is still 113.2MB. Free memory was 64.9MB in the beginning and 61.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 12:06:47,057 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43ms. Allocated memory is still 48.2MB. Free memory was 26.5MB in the beginning and 26.4MB in the end (delta: 54.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 347.77ms. Allocated memory is still 62.9MB. Free memory was 41.1MB in the beginning and 29.7MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 105.25ms. Allocated memory is still 62.9MB. Free memory was 29.7MB in the beginning and 43.9MB in the end (delta: -14.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.70ms. Allocated memory is still 62.9MB. Free memory was 43.9MB in the beginning and 42.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 601.26ms. Allocated memory was 62.9MB in the beginning and 77.6MB in the end (delta: 14.7MB). Free memory was 42.3MB in the beginning and 55.3MB in the end (delta: -13.1MB). Peak memory consumption was 18.6MB. Max. memory is 16.1GB. * TraceAbstraction took 7072.49ms. Allocated memory was 77.6MB in the beginning and 113.2MB in the end (delta: 35.7MB). Free memory was 54.6MB in the beginning and 64.9MB in the end (delta: -10.3MB). Peak memory consumption was 24.0MB. Max. memory is 16.1GB. * Witness Printer took 48.15ms. Allocated memory is still 113.2MB. Free memory was 64.9MB in the beginning and 61.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.6s, 59 PlacesBefore, 4 PlacesAfterwards, 62 TransitionsBefore, 4 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 7 FixpointIterations, 56 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 16 TrivialYvCompositions, 0 ConcurrentYvCompositions, 3 ChoiceCompositions, 75 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: 101]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 101]: 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, 215 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: 6.9s, OverallIterations: 5, TraceHistogramMax: 10, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 189 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 144 mSDsluCounter, 102 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 102 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 238 IncrementalHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 0 mSDtfsCounter, 238 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 68 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=121occurred in iteration=4, InterpolantAutomatonStates: 38, 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, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 46 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 56 ConstructedInterpolants, 0 QuantifiedInterpolants, 168 SizeOfPredicates, 11 NumberOfNonLiveVariables, 352 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 11 InterpolantComputations, 2 PerfectInterpolantSequences, 90/198 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 12:06:47,078 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