./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/pthread-lit/qw2004-2b.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread-lit/qw2004-2b.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f17f6182d2330561fe6717b6a061d0dded698483f9e32b37a3b36e1144855a29 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 05:26:46,252 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 05:26:46,254 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 05:26:46,288 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 05:26:46,292 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 05:26:46,295 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 05:26:46,299 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 05:26:46,301 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 05:26:46,303 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 05:26:46,308 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 05:26:46,309 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 05:26:46,311 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 05:26:46,312 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 05:26:46,313 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 05:26:46,316 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 05:26:46,319 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 05:26:46,320 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 05:26:46,321 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 05:26:46,323 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 05:26:46,328 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 05:26:46,329 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 05:26:46,338 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 05:26:46,339 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 05:26:46,341 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 05:26:46,348 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 05:26:46,349 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 05:26:46,349 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 05:26:46,351 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 05:26:46,351 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 05:26:46,352 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 05:26:46,352 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 05:26:46,354 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 05:26:46,355 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 05:26:46,356 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 05:26:46,356 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 05:26:46,357 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 05:26:46,357 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 05:26:46,357 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 05:26:46,358 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 05:26:46,358 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 05:26:46,359 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 05:26:46,361 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 05:26:46,395 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 05:26:46,395 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 05:26:46,396 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 05:26:46,396 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 05:26:46,397 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 05:26:46,397 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 05:26:46,398 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 05:26:46,398 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 05:26:46,398 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 05:26:46,398 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 05:26:46,399 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 05:26:46,399 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 05:26:46,400 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 05:26:46,400 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 05:26:46,400 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 05:26:46,400 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 05:26:46,400 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 05:26:46,401 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 05:26:46,401 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 05:26:46,401 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 05:26:46,401 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 05:26:46,401 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 05:26:46,402 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 05:26:46,402 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 05:26:46,402 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 05:26:46,402 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 05:26:46,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 05:26:46,403 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 05:26:46,403 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 05:26:46,403 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 05:26:46,403 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 05:26:46,403 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 05:26:46,404 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 05:26:46,404 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 05:26:46,404 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 05:26:46,404 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 05:26:46,404 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 05:26:46,405 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f17f6182d2330561fe6717b6a061d0dded698483f9e32b37a3b36e1144855a29 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 05:26:46,717 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 05:26:46,736 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 05:26:46,738 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 05:26:46,739 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 05:26:46,739 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 05:26:46,740 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-lit/qw2004-2b.i [2023-09-01 05:26:47,869 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 05:26:48,163 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 05:26:48,163 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/qw2004-2b.i [2023-09-01 05:26:48,179 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a91d2c9e5/a3dcc2b9404046d1b86c21fecd52de6d/FLAGdb5e15d11 [2023-09-01 05:26:48,203 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a91d2c9e5/a3dcc2b9404046d1b86c21fecd52de6d [2023-09-01 05:26:48,206 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 05:26:48,208 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 05:26:48,210 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 05:26:48,210 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 05:26:48,213 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 05:26:48,213 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 05:26:48" (1/1) ... [2023-09-01 05:26:48,215 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21e7b174 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 05:26:48, skipping insertion in model container [2023-09-01 05:26:48,215 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 05:26:48" (1/1) ... [2023-09-01 05:26:48,221 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 05:26:48,269 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 05:26:48,550 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/qw2004-2b.i[30003,30016] [2023-09-01 05:26:48,567 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 05:26:48,577 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 05:26:48,625 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/qw2004-2b.i[30003,30016] [2023-09-01 05:26:48,635 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 05:26:48,712 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 05:26:48,712 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 05:26:48,719 INFO L208 MainTranslator]: Completed translation [2023-09-01 05:26:48,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 05:26:48 WrapperNode [2023-09-01 05:26:48,719 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 05:26:48,720 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 05:26:48,721 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 05:26:48,721 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 05:26:48,727 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 05:26:48" (1/1) ... [2023-09-01 05:26:48,753 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 05:26:48" (1/1) ... [2023-09-01 05:26:48,782 INFO L138 Inliner]: procedures = 175, calls = 36, calls flagged for inlining = 9, calls inlined = 10, statements flattened = 123 [2023-09-01 05:26:48,783 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 05:26:48,784 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 05:26:48,785 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 05:26:48,785 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 05:26:48,791 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 05:26:48" (1/1) ... [2023-09-01 05:26:48,792 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 05:26:48" (1/1) ... [2023-09-01 05:26:48,803 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 05:26:48" (1/1) ... [2023-09-01 05:26:48,804 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 05:26:48" (1/1) ... [2023-09-01 05:26:48,812 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 05:26:48" (1/1) ... [2023-09-01 05:26:48,817 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 05:26:48" (1/1) ... [2023-09-01 05:26:48,819 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 05:26:48" (1/1) ... [2023-09-01 05:26:48,824 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 05:26:48" (1/1) ... [2023-09-01 05:26:48,826 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 05:26:48,831 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 05:26:48,831 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 05:26:48,831 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 05:26:48,832 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 05:26:48" (1/1) ... [2023-09-01 05:26:48,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 05:26:48,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 05:26:48,861 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) [2023-09-01 05:26:48,871 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 [2023-09-01 05:26:48,896 INFO L130 BoogieDeclarations]: Found specification of procedure BCSP_PnpStop [2023-09-01 05:26:48,896 INFO L138 BoogieDeclarations]: Found implementation of procedure BCSP_PnpStop [2023-09-01 05:26:48,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 05:26:48,897 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 05:26:48,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 05:26:48,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 05:26:48,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 05:26:48,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 05:26:48,897 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 05:26:48,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 05:26:48,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 05:26:48,899 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 05:26:49,078 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 05:26:49,080 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 05:26:49,305 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 05:26:49,374 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 05:26:49,375 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-09-01 05:26:49,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 05:26:49 BoogieIcfgContainer [2023-09-01 05:26:49,377 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 05:26:49,378 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 05:26:49,378 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 05:26:49,384 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 05:26:49,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 05:26:48" (1/3) ... [2023-09-01 05:26:49,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13800f58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 05:26:49, skipping insertion in model container [2023-09-01 05:26:49,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 05:26:48" (2/3) ... [2023-09-01 05:26:49,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13800f58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 05:26:49, skipping insertion in model container [2023-09-01 05:26:49,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 05:26:49" (3/3) ... [2023-09-01 05:26:49,387 INFO L112 eAbstractionObserver]: Analyzing ICFG qw2004-2b.i [2023-09-01 05:26:49,394 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 05:26:49,402 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 05:26:49,402 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-09-01 05:26:49,402 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 05:26:49,459 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 05:26:49,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 106 places, 108 transitions, 221 flow [2023-09-01 05:26:49,529 INFO L130 PetriNetUnfolder]: 6/107 cut-off events. [2023-09-01 05:26:49,530 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 05:26:49,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 107 events. 6/107 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 136 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 85. Up to 2 conditions per place. [2023-09-01 05:26:49,534 INFO L82 GeneralOperation]: Start removeDead. Operand has 106 places, 108 transitions, 221 flow [2023-09-01 05:26:49,538 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 105 places, 107 transitions, 217 flow [2023-09-01 05:26:49,541 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 05:26:49,552 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 105 places, 107 transitions, 217 flow [2023-09-01 05:26:49,555 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 105 places, 107 transitions, 217 flow [2023-09-01 05:26:49,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 105 places, 107 transitions, 217 flow [2023-09-01 05:26:49,592 INFO L130 PetriNetUnfolder]: 6/107 cut-off events. [2023-09-01 05:26:49,593 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 05:26:49,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 107 events. 6/107 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 136 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 85. Up to 2 conditions per place. [2023-09-01 05:26:49,596 INFO L119 LiptonReduction]: Number of co-enabled transitions 3248 [2023-09-01 05:26:52,263 INFO L134 LiptonReduction]: Checked pairs total: 4839 [2023-09-01 05:26:52,263 INFO L136 LiptonReduction]: Total number of compositions: 120 [2023-09-01 05:26:52,275 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 05:26:52,280 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;@63dbde72, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 05:26:52,281 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-09-01 05:26:52,284 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2023-09-01 05:26:52,284 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 05:26:52,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 05:26:52,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-09-01 05:26:52,285 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting BCSP_PnpStopErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [BCSP_PnpStopErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, BCSP_PnpStopErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-09-01 05:26:52,289 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 05:26:52,290 INFO L85 PathProgramCache]: Analyzing trace with hash 13829186, now seen corresponding path program 1 times [2023-09-01 05:26:52,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 05:26:52,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471786898] [2023-09-01 05:26:52,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 05:26:52,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 05:26:52,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 05:26:52,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 05:26:52,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 05:26:52,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471786898] [2023-09-01 05:26:52,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471786898] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 05:26:52,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 05:26:52,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 05:26:52,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399076610] [2023-09-01 05:26:52,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 05:26:52,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 05:26:52,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 05:26:52,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 05:26:52,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 05:26:52,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 228 [2023-09-01 05:26:52,522 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 22 transitions, 47 flow. Second operand has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 05:26:52,522 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 05:26:52,522 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 228 [2023-09-01 05:26:52,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 05:26:52,586 INFO L130 PetriNetUnfolder]: 91/186 cut-off events. [2023-09-01 05:26:52,586 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 05:26:52,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 375 conditions, 186 events. 91/186 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 745 event pairs, 24 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 366. Up to 125 conditions per place. [2023-09-01 05:26:52,589 INFO L137 encePairwiseOnDemand]: 218/228 looper letters, 30 selfloop transitions, 7 changer transitions 0/38 dead transitions. [2023-09-01 05:26:52,589 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 38 transitions, 153 flow [2023-09-01 05:26:52,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 05:26:52,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 05:26:52,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 322 transitions. [2023-09-01 05:26:52,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47076023391812866 [2023-09-01 05:26:52,602 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 322 transitions. [2023-09-01 05:26:52,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 322 transitions. [2023-09-01 05:26:52,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 05:26:52,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 322 transitions. [2023-09-01 05:26:52,609 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 05:26:52,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 228.0) internal successors, (912), 4 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 05:26:52,614 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 228.0) internal successors, (912), 4 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 05:26:52,615 INFO L175 Difference]: Start difference. First operand has 23 places, 22 transitions, 47 flow. Second operand 3 states and 322 transitions. [2023-09-01 05:26:52,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 38 transitions, 153 flow [2023-09-01 05:26:52,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 38 transitions, 152 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 05:26:52,619 INFO L231 Difference]: Finished difference. Result has 26 places, 28 transitions, 104 flow [2023-09-01 05:26:52,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=26, PETRI_TRANSITIONS=28} [2023-09-01 05:26:52,623 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 3 predicate places. [2023-09-01 05:26:52,623 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 28 transitions, 104 flow [2023-09-01 05:26:52,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 05:26:52,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 05:26:52,624 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-09-01 05:26:52,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 05:26:52,625 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting BCSP_PnpStopErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [BCSP_PnpStopErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, BCSP_PnpStopErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-09-01 05:26:52,625 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 05:26:52,625 INFO L85 PathProgramCache]: Analyzing trace with hash 13829187, now seen corresponding path program 1 times [2023-09-01 05:26:52,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 05:26:52,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103005509] [2023-09-01 05:26:52,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 05:26:52,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 05:26:52,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 05:26:52,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 05:26:52,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 05:26:52,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103005509] [2023-09-01 05:26:52,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103005509] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 05:26:52,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 05:26:52,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 05:26:52,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185571905] [2023-09-01 05:26:52,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 05:26:52,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 05:26:52,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 05:26:52,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 05:26:52,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 05:26:52,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 228 [2023-09-01 05:26:52,701 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 28 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 05:26:52,701 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 05:26:52,701 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 228 [2023-09-01 05:26:52,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 05:26:52,779 INFO L130 PetriNetUnfolder]: 98/195 cut-off events. [2023-09-01 05:26:52,780 INFO L131 PetriNetUnfolder]: For 75/77 co-relation queries the response was YES. [2023-09-01 05:26:52,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 484 conditions, 195 events. 98/195 cut-off events. For 75/77 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 708 event pairs, 35 based on Foata normal form. 21/178 useless extension candidates. Maximal degree in co-relation 472. Up to 112 conditions per place. [2023-09-01 05:26:52,786 INFO L137 encePairwiseOnDemand]: 221/228 looper letters, 34 selfloop transitions, 5 changer transitions 0/40 dead transitions. [2023-09-01 05:26:52,786 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 40 transitions, 216 flow [2023-09-01 05:26:52,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 05:26:52,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 05:26:52,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 317 transitions. [2023-09-01 05:26:52,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46345029239766083 [2023-09-01 05:26:52,792 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 317 transitions. [2023-09-01 05:26:52,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 317 transitions. [2023-09-01 05:26:52,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 05:26:52,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 317 transitions. [2023-09-01 05:26:52,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 05:26:52,797 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 228.0) internal successors, (912), 4 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 05:26:52,798 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 228.0) internal successors, (912), 4 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 05:26:52,798 INFO L175 Difference]: Start difference. First operand has 26 places, 28 transitions, 104 flow. Second operand 3 states and 317 transitions. [2023-09-01 05:26:52,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 40 transitions, 216 flow [2023-09-01 05:26:52,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 40 transitions, 200 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 05:26:52,801 INFO L231 Difference]: Finished difference. Result has 27 places, 28 transitions, 122 flow [2023-09-01 05:26:52,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=27, PETRI_TRANSITIONS=28} [2023-09-01 05:26:52,802 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 4 predicate places. [2023-09-01 05:26:52,802 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 28 transitions, 122 flow [2023-09-01 05:26:52,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 05:26:52,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 05:26:52,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 05:26:52,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 05:26:52,804 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [BCSP_PnpStopErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, BCSP_PnpStopErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-09-01 05:26:52,806 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 05:26:52,806 INFO L85 PathProgramCache]: Analyzing trace with hash 405004230, now seen corresponding path program 1 times [2023-09-01 05:26:52,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 05:26:52,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027942055] [2023-09-01 05:26:52,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 05:26:52,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 05:26:52,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 05:26:52,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 05:26:52,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 05:26:52,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027942055] [2023-09-01 05:26:52,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027942055] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 05:26:52,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 05:26:52,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 05:26:52,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480840468] [2023-09-01 05:26:52,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 05:26:52,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 05:26:52,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 05:26:52,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 05:26:52,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 05:26:52,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 228 [2023-09-01 05:26:52,867 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 28 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 05:26:52,867 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 05:26:52,867 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 228 [2023-09-01 05:26:52,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 05:26:52,921 INFO L130 PetriNetUnfolder]: 93/189 cut-off events. [2023-09-01 05:26:52,921 INFO L131 PetriNetUnfolder]: For 102/102 co-relation queries the response was YES. [2023-09-01 05:26:52,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 506 conditions, 189 events. 93/189 cut-off events. For 102/102 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 735 event pairs, 24 based on Foata normal form. 0/174 useless extension candidates. Maximal degree in co-relation 492. Up to 173 conditions per place. [2023-09-01 05:26:52,922 INFO L137 encePairwiseOnDemand]: 226/228 looper letters, 35 selfloop transitions, 1 changer transitions 0/37 dead transitions. [2023-09-01 05:26:52,922 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 37 transitions, 232 flow [2023-09-01 05:26:52,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 05:26:52,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 05:26:52,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 308 transitions. [2023-09-01 05:26:52,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4502923976608187 [2023-09-01 05:26:52,924 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 308 transitions. [2023-09-01 05:26:52,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 308 transitions. [2023-09-01 05:26:52,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 05:26:52,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 308 transitions. [2023-09-01 05:26:52,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 05:26:52,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 228.0) internal successors, (912), 4 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 05:26:52,927 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 228.0) internal successors, (912), 4 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 05:26:52,928 INFO L175 Difference]: Start difference. First operand has 27 places, 28 transitions, 122 flow. Second operand 3 states and 308 transitions. [2023-09-01 05:26:52,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 37 transitions, 232 flow [2023-09-01 05:26:52,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 37 transitions, 218 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 05:26:52,930 INFO L231 Difference]: Finished difference. Result has 28 places, 28 transitions, 117 flow [2023-09-01 05:26:52,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=117, PETRI_PLACES=28, PETRI_TRANSITIONS=28} [2023-09-01 05:26:52,931 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 5 predicate places. [2023-09-01 05:26:52,931 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 28 transitions, 117 flow [2023-09-01 05:26:52,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 05:26:52,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 05:26:52,932 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 05:26:52,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 05:26:52,932 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [BCSP_PnpStopErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, BCSP_PnpStopErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-09-01 05:26:52,932 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 05:26:52,933 INFO L85 PathProgramCache]: Analyzing trace with hash 406157430, now seen corresponding path program 2 times [2023-09-01 05:26:52,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 05:26:52,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604037372] [2023-09-01 05:26:52,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 05:26:52,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 05:26:52,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 05:26:53,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 05:26:53,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 05:26:53,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604037372] [2023-09-01 05:26:53,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604037372] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 05:26:53,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 05:26:53,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 05:26:53,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266033124] [2023-09-01 05:26:53,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 05:26:53,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 05:26:53,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 05:26:53,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 05:26:53,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 05:26:53,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 228 [2023-09-01 05:26:53,019 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 28 transitions, 117 flow. Second operand has 4 states, 4 states have (on average 95.5) internal successors, (382), 4 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 05:26:53,020 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 05:26:53,020 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 228 [2023-09-01 05:26:53,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 05:26:53,105 INFO L130 PetriNetUnfolder]: 83/179 cut-off events. [2023-09-01 05:26:53,106 INFO L131 PetriNetUnfolder]: For 91/91 co-relation queries the response was YES. [2023-09-01 05:26:53,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 468 conditions, 179 events. 83/179 cut-off events. For 91/91 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 672 event pairs, 7 based on Foata normal form. 10/164 useless extension candidates. Maximal degree in co-relation 454. Up to 99 conditions per place. [2023-09-01 05:26:53,107 INFO L137 encePairwiseOnDemand]: 218/228 looper letters, 31 selfloop transitions, 7 changer transitions 7/46 dead transitions. [2023-09-01 05:26:53,107 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 46 transitions, 251 flow [2023-09-01 05:26:53,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 05:26:53,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 05:26:53,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 422 transitions. [2023-09-01 05:26:53,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46271929824561403 [2023-09-01 05:26:53,110 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 422 transitions. [2023-09-01 05:26:53,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 422 transitions. [2023-09-01 05:26:53,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 05:26:53,111 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 422 transitions. [2023-09-01 05:26:53,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 105.5) internal successors, (422), 4 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 05:26:53,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 228.0) internal successors, (1140), 5 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 05:26:53,114 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 228.0) internal successors, (1140), 5 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 05:26:53,114 INFO L175 Difference]: Start difference. First operand has 28 places, 28 transitions, 117 flow. Second operand 4 states and 422 transitions. [2023-09-01 05:26:53,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 46 transitions, 251 flow [2023-09-01 05:26:53,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 46 transitions, 248 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 05:26:53,116 INFO L231 Difference]: Finished difference. Result has 30 places, 26 transitions, 137 flow [2023-09-01 05:26:53,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=137, PETRI_PLACES=30, PETRI_TRANSITIONS=26} [2023-09-01 05:26:53,117 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 7 predicate places. [2023-09-01 05:26:53,117 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 26 transitions, 137 flow [2023-09-01 05:26:53,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.5) internal successors, (382), 4 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 05:26:53,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 05:26:53,117 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 05:26:53,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 05:26:53,118 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting BCSP_PnpStopErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [BCSP_PnpStopErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, BCSP_PnpStopErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-09-01 05:26:53,118 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 05:26:53,118 INFO L85 PathProgramCache]: Analyzing trace with hash -294224397, now seen corresponding path program 1 times [2023-09-01 05:26:53,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 05:26:53,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858769601] [2023-09-01 05:26:53,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 05:26:53,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 05:26:53,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 05:26:53,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 05:26:53,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 05:26:53,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858769601] [2023-09-01 05:26:53,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858769601] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 05:26:53,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 05:26:53,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 05:26:53,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625905950] [2023-09-01 05:26:53,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 05:26:53,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 05:26:53,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 05:26:53,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 05:26:53,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 05:26:53,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 228 [2023-09-01 05:26:53,208 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 26 transitions, 137 flow. Second operand has 5 states, 5 states have (on average 92.4) internal successors, (462), 5 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 05:26:53,208 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 05:26:53,208 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 228 [2023-09-01 05:26:53,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 05:26:53,282 INFO L130 PetriNetUnfolder]: 65/127 cut-off events. [2023-09-01 05:26:53,283 INFO L131 PetriNetUnfolder]: For 141/141 co-relation queries the response was YES. [2023-09-01 05:26:53,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 380 conditions, 127 events. 65/127 cut-off events. For 141/141 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 379 event pairs, 0 based on Foata normal form. 14/131 useless extension candidates. Maximal degree in co-relation 364. Up to 90 conditions per place. [2023-09-01 05:26:53,284 INFO L137 encePairwiseOnDemand]: 218/228 looper letters, 29 selfloop transitions, 9 changer transitions 0/38 dead transitions. [2023-09-01 05:26:53,284 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 38 transitions, 239 flow [2023-09-01 05:26:53,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 05:26:53,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 05:26:53,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 493 transitions. [2023-09-01 05:26:53,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4324561403508772 [2023-09-01 05:26:53,286 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 493 transitions. [2023-09-01 05:26:53,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 493 transitions. [2023-09-01 05:26:53,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 05:26:53,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 493 transitions. [2023-09-01 05:26:53,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 98.6) internal successors, (493), 5 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 05:26:53,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 228.0) internal successors, (1368), 6 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 05:26:53,292 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 228.0) internal successors, (1368), 6 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 05:26:53,292 INFO L175 Difference]: Start difference. First operand has 30 places, 26 transitions, 137 flow. Second operand 5 states and 493 transitions. [2023-09-01 05:26:53,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 38 transitions, 239 flow [2023-09-01 05:26:53,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 38 transitions, 230 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-09-01 05:26:53,294 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 157 flow [2023-09-01 05:26:53,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=157, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2023-09-01 05:26:53,295 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 8 predicate places. [2023-09-01 05:26:53,296 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 157 flow [2023-09-01 05:26:53,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 92.4) internal successors, (462), 5 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 05:26:53,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 05:26:53,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 05:26:53,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 05:26:53,297 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting BCSP_PnpStopErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [BCSP_PnpStopErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, BCSP_PnpStopErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-09-01 05:26:53,297 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 05:26:53,297 INFO L85 PathProgramCache]: Analyzing trace with hash -294224398, now seen corresponding path program 1 times [2023-09-01 05:26:53,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 05:26:53,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073782078] [2023-09-01 05:26:53,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 05:26:53,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 05:26:53,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 05:26:53,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 05:26:53,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 05:26:53,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073782078] [2023-09-01 05:26:53,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073782078] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 05:26:53,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 05:26:53,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 05:26:53,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315799787] [2023-09-01 05:26:53,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 05:26:53,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 05:26:53,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 05:26:53,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 05:26:53,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 05:26:53,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 228 [2023-09-01 05:26:53,347 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 157 flow. Second operand has 5 states, 5 states have (on average 92.4) internal successors, (462), 5 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 05:26:53,347 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 05:26:53,347 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 228 [2023-09-01 05:26:53,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 05:26:53,448 INFO L130 PetriNetUnfolder]: 78/161 cut-off events. [2023-09-01 05:26:53,448 INFO L131 PetriNetUnfolder]: For 210/210 co-relation queries the response was YES. [2023-09-01 05:26:53,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 505 conditions, 161 events. 78/161 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 569 event pairs, 21 based on Foata normal form. 14/158 useless extension candidates. Maximal degree in co-relation 488. Up to 63 conditions per place. [2023-09-01 05:26:53,449 INFO L137 encePairwiseOnDemand]: 220/228 looper letters, 11 selfloop transitions, 2 changer transitions 31/44 dead transitions. [2023-09-01 05:26:53,449 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 44 transitions, 279 flow [2023-09-01 05:26:53,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 05:26:53,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 05:26:53,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 593 transitions. [2023-09-01 05:26:53,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4334795321637427 [2023-09-01 05:26:53,452 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 593 transitions. [2023-09-01 05:26:53,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 593 transitions. [2023-09-01 05:26:53,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 05:26:53,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 593 transitions. [2023-09-01 05:26:53,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 98.83333333333333) internal successors, (593), 6 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 05:26:53,456 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 228.0) internal successors, (1596), 7 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 05:26:53,457 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 228.0) internal successors, (1596), 7 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 05:26:53,457 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 157 flow. Second operand 6 states and 593 transitions. [2023-09-01 05:26:53,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 44 transitions, 279 flow [2023-09-01 05:26:53,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 44 transitions, 236 flow, removed 9 selfloop flow, removed 5 redundant places. [2023-09-01 05:26:53,461 INFO L231 Difference]: Finished difference. Result has 33 places, 13 transitions, 56 flow [2023-09-01 05:26:53,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=56, PETRI_PLACES=33, PETRI_TRANSITIONS=13} [2023-09-01 05:26:53,462 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 10 predicate places. [2023-09-01 05:26:53,462 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 13 transitions, 56 flow [2023-09-01 05:26:53,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 92.4) internal successors, (462), 5 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 05:26:53,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 05:26:53,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 05:26:53,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 05:26:53,463 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [BCSP_PnpStopErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, BCSP_PnpStopErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-09-01 05:26:53,463 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 05:26:53,463 INFO L85 PathProgramCache]: Analyzing trace with hash 909399496, now seen corresponding path program 1 times [2023-09-01 05:26:53,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 05:26:53,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453991339] [2023-09-01 05:26:53,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 05:26:53,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 05:26:53,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 05:26:53,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 05:26:53,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 05:26:53,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453991339] [2023-09-01 05:26:53,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453991339] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 05:26:53,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 05:26:53,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 05:26:53,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174993584] [2023-09-01 05:26:53,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 05:26:53,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 05:26:53,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 05:26:53,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 05:26:53,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 05:26:53,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 228 [2023-09-01 05:26:53,547 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 13 transitions, 56 flow. Second operand has 5 states, 5 states have (on average 92.8) internal successors, (464), 5 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 05:26:53,547 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 05:26:53,547 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 228 [2023-09-01 05:26:53,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 05:26:53,581 INFO L130 PetriNetUnfolder]: 14/39 cut-off events. [2023-09-01 05:26:53,581 INFO L131 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2023-09-01 05:26:53,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 39 events. 14/39 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 70 event pairs, 0 based on Foata normal form. 4/38 useless extension candidates. Maximal degree in co-relation 109. Up to 16 conditions per place. [2023-09-01 05:26:53,582 INFO L137 encePairwiseOnDemand]: 223/228 looper letters, 0 selfloop transitions, 0 changer transitions 20/20 dead transitions. [2023-09-01 05:26:53,582 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 20 transitions, 106 flow [2023-09-01 05:26:53,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 05:26:53,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 05:26:53,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 567 transitions. [2023-09-01 05:26:53,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4144736842105263 [2023-09-01 05:26:53,584 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 567 transitions. [2023-09-01 05:26:53,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 567 transitions. [2023-09-01 05:26:53,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 05:26:53,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 567 transitions. [2023-09-01 05:26:53,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 94.5) internal successors, (567), 6 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 05:26:53,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 228.0) internal successors, (1596), 7 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 05:26:53,588 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 228.0) internal successors, (1596), 7 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 05:26:53,588 INFO L175 Difference]: Start difference. First operand has 33 places, 13 transitions, 56 flow. Second operand 6 states and 567 transitions. [2023-09-01 05:26:53,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 20 transitions, 106 flow [2023-09-01 05:26:53,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 20 transitions, 91 flow, removed 1 selfloop flow, removed 8 redundant places. [2023-09-01 05:26:53,589 INFO L231 Difference]: Finished difference. Result has 24 places, 0 transitions, 0 flow [2023-09-01 05:26:53,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=35, PETRI_DIFFERENCE_MINUEND_PLACES=19, 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=6, PETRI_FLOW=0, PETRI_PLACES=24, PETRI_TRANSITIONS=0} [2023-09-01 05:26:53,590 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 1 predicate places. [2023-09-01 05:26:53,590 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 0 transitions, 0 flow [2023-09-01 05:26:53,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 92.8) internal successors, (464), 5 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 05:26:53,592 INFO L805 garLoopResultBuilder]: Registering result SAFE for location BCSP_PnpStopErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 9 remaining) [2023-09-01 05:26:53,593 INFO L805 garLoopResultBuilder]: Registering result SAFE for location BCSP_PnpStopErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 9 remaining) [2023-09-01 05:26:53,593 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 9 remaining) [2023-09-01 05:26:53,593 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 9 remaining) [2023-09-01 05:26:53,593 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 9 remaining) [2023-09-01 05:26:53,593 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 9 remaining) [2023-09-01 05:26:53,594 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 9 remaining) [2023-09-01 05:26:53,594 INFO L805 garLoopResultBuilder]: Registering result SAFE for location BCSP_PnpStopErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 9 remaining) [2023-09-01 05:26:53,594 INFO L805 garLoopResultBuilder]: Registering result SAFE for location BCSP_PnpStopErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 9 remaining) [2023-09-01 05:26:53,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 05:26:53,594 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2023-09-01 05:26:53,598 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 05:26:53,598 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 05:26:53,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 05:26:53 BasicIcfg [2023-09-01 05:26:53,601 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 05:26:53,602 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 05:26:53,602 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 05:26:53,602 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 05:26:53,602 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 05:26:49" (3/4) ... [2023-09-01 05:26:53,604 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-09-01 05:26:53,608 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure BCSP_PnpStop [2023-09-01 05:26:53,612 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 25 nodes and edges [2023-09-01 05:26:53,612 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-09-01 05:26:53,612 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-09-01 05:26:53,612 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-09-01 05:26:53,653 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 05:26:53,654 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 05:26:53,654 INFO L158 Benchmark]: Toolchain (without parser) took 5446.60ms. Allocated memory was 71.3MB in the beginning and 107.0MB in the end (delta: 35.7MB). Free memory was 48.3MB in the beginning and 61.5MB in the end (delta: -13.1MB). Peak memory consumption was 24.5MB. Max. memory is 16.1GB. [2023-09-01 05:26:53,654 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 58.7MB. Free memory is still 36.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 05:26:53,655 INFO L158 Benchmark]: CACSL2BoogieTranslator took 509.28ms. Allocated memory is still 71.3MB. Free memory was 48.1MB in the beginning and 46.7MB in the end (delta: 1.4MB). Peak memory consumption was 19.5MB. Max. memory is 16.1GB. [2023-09-01 05:26:53,655 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.57ms. Allocated memory is still 71.3MB. Free memory was 46.7MB in the beginning and 44.5MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 05:26:53,655 INFO L158 Benchmark]: Boogie Preprocessor took 45.97ms. Allocated memory is still 71.3MB. Free memory was 44.5MB in the beginning and 43.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 05:26:53,655 INFO L158 Benchmark]: RCFGBuilder took 546.00ms. Allocated memory is still 71.3MB. Free memory was 42.9MB in the beginning and 48.4MB in the end (delta: -5.5MB). Peak memory consumption was 19.5MB. Max. memory is 16.1GB. [2023-09-01 05:26:53,656 INFO L158 Benchmark]: TraceAbstraction took 4223.08ms. Allocated memory was 71.3MB in the beginning and 107.0MB in the end (delta: 35.7MB). Free memory was 47.7MB in the beginning and 64.6MB in the end (delta: -17.0MB). Peak memory consumption was 16.9MB. Max. memory is 16.1GB. [2023-09-01 05:26:53,656 INFO L158 Benchmark]: Witness Printer took 51.95ms. Allocated memory is still 107.0MB. Free memory was 64.6MB in the beginning and 61.5MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-09-01 05:26:53,657 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 58.7MB. Free memory is still 36.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 509.28ms. Allocated memory is still 71.3MB. Free memory was 48.1MB in the beginning and 46.7MB in the end (delta: 1.4MB). Peak memory consumption was 19.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.57ms. Allocated memory is still 71.3MB. Free memory was 46.7MB in the beginning and 44.5MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 45.97ms. Allocated memory is still 71.3MB. Free memory was 44.5MB in the beginning and 43.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 546.00ms. Allocated memory is still 71.3MB. Free memory was 42.9MB in the beginning and 48.4MB in the end (delta: -5.5MB). Peak memory consumption was 19.5MB. Max. memory is 16.1GB. * TraceAbstraction took 4223.08ms. Allocated memory was 71.3MB in the beginning and 107.0MB in the end (delta: 35.7MB). Free memory was 47.7MB in the beginning and 64.6MB in the end (delta: -17.0MB). Peak memory consumption was 16.9MB. Max. memory is 16.1GB. * Witness Printer took 51.95ms. Allocated memory is still 107.0MB. Free memory was 64.6MB in the beginning and 61.5MB 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: 2.7s, 105 PlacesBefore, 23 PlacesAfterwards, 107 TransitionsBefore, 22 TransitionsAfterwards, 3248 CoEnabledTransitionPairs, 6 FixpointIterations, 20 TrivialSequentialCompositions, 75 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 22 ConcurrentYvCompositions, 3 ChoiceCompositions, 120 TotalNumberOfCompositions, 4839 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3570, independent: 3441, independent conditional: 0, independent unconditional: 3441, dependent: 129, dependent conditional: 0, dependent unconditional: 129, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2080, independent: 2040, independent conditional: 0, independent unconditional: 2040, dependent: 40, dependent conditional: 0, dependent unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3570, independent: 1401, independent conditional: 0, independent unconditional: 1401, dependent: 89, dependent conditional: 0, dependent unconditional: 89, unknown: 2080, unknown conditional: 0, unknown unconditional: 2080] , Statistics on independence cache: Total cache size (in pairs): 79, Positive cache size: 66, Positive conditional cache size: 0, Positive unconditional cache size: 66, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 719]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 719]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 712]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 712]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 719]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 719]: 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 3 procedures, 132 locations, 9 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: 4.1s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 171 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 148 mSDsluCounter, 14 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8 mSDsCounter, 56 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 373 IncrementalHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 56 mSolverCounterUnsat, 6 mSDtfsCounter, 373 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=157occurred in iteration=5, InterpolantAutomatonStates: 30, 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, 0.4s InterpolantComputationTime, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 100 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 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 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-09-01 05:26:53,680 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