./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 AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread-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 AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 08:50:14,038 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 08:50:14,040 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 08:50:14,084 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 08:50:14,086 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 08:50:14,089 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 08:50:14,092 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 08:50:14,095 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 08:50:14,097 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 08:50:14,102 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 08:50:14,103 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 08:50:14,105 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 08:50:14,106 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 08:50:14,108 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 08:50:14,109 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 08:50:14,114 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 08:50:14,115 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 08:50:14,117 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 08:50:14,118 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 08:50:14,123 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 08:50:14,125 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 08:50:14,127 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 08:50:14,128 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 08:50:14,129 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 08:50:14,136 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 08:50:14,136 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 08:50:14,136 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 08:50:14,138 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 08:50:14,138 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 08:50:14,139 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 08:50:14,139 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 08:50:14,145 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 08:50:14,147 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 08:50:14,148 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 08:50:14,149 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 08:50:14,149 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 08:50:14,149 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 08:50:14,150 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 08:50:14,150 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 08:50:14,151 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 08:50:14,156 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 08:50:14,158 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 08:50:14,175 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 08:50:14,175 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 08:50:14,175 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 08:50:14,175 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 08:50:14,176 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 08:50:14,176 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 08:50:14,177 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 08:50:14,177 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 08:50:14,177 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 08:50:14,177 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 08:50:14,178 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 08:50:14,178 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 08:50:14,178 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 08:50:14,178 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 08:50:14,178 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 08:50:14,178 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 08:50:14,179 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 08:50:14,179 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 08:50:14,179 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 08:50:14,179 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 08:50:14,179 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 08:50:14,179 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 08:50:14,180 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 08:50:14,180 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 08:50:14,180 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 08:50:14,180 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 08:50:14,180 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 08:50:14,181 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 08:50:14,181 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 08:50:14,181 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 08:50:14,181 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 08:50:14,181 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 08:50:14,181 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 08:50:14,182 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 08:50:14,182 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 08:50:14,182 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 08:50:14,182 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 08:50:14,182 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f17f6182d2330561fe6717b6a061d0dded698483f9e32b37a3b36e1144855a29 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 08:50:14,455 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 08:50:14,476 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 08:50:14,479 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 08:50:14,481 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 08:50:14,481 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 08:50:14,482 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-lit/qw2004-2b.i [2023-08-30 08:50:15,712 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 08:50:15,968 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 08:50:15,969 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/qw2004-2b.i [2023-08-30 08:50:15,981 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3995e654/bd7b14f6d7f64ae190fad15d75aec4f5/FLAG76a7636b1 [2023-08-30 08:50:15,994 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3995e654/bd7b14f6d7f64ae190fad15d75aec4f5 [2023-08-30 08:50:16,002 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 08:50:16,003 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 08:50:16,004 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 08:50:16,008 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 08:50:16,011 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 08:50:16,012 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 08:50:16" (1/1) ... [2023-08-30 08:50:16,013 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26a05f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:50:16, skipping insertion in model container [2023-08-30 08:50:16,013 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 08:50:16" (1/1) ... [2023-08-30 08:50:16,018 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 08:50:16,059 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 08:50:16,341 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] [2023-08-30 08:50:16,361 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 08:50:16,369 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 08:50:16,403 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] [2023-08-30 08:50:16,427 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 08:50:16,457 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 08:50:16,457 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 08:50:16,463 INFO L208 MainTranslator]: Completed translation [2023-08-30 08:50:16,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:50:16 WrapperNode [2023-08-30 08:50:16,464 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 08:50:16,465 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 08:50:16,465 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 08:50:16,465 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 08:50:16,471 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:50:16" (1/1) ... [2023-08-30 08:50:16,497 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:50:16" (1/1) ... [2023-08-30 08:50:16,526 INFO L138 Inliner]: procedures = 175, calls = 36, calls flagged for inlining = 9, calls inlined = 10, statements flattened = 123 [2023-08-30 08:50:16,526 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 08:50:16,527 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 08:50:16,527 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 08:50:16,528 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 08:50:16,535 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:50:16" (1/1) ... [2023-08-30 08:50:16,536 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:50:16" (1/1) ... [2023-08-30 08:50:16,548 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:50:16" (1/1) ... [2023-08-30 08:50:16,550 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:50:16" (1/1) ... [2023-08-30 08:50:16,558 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:50:16" (1/1) ... [2023-08-30 08:50:16,566 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:50:16" (1/1) ... [2023-08-30 08:50:16,567 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:50:16" (1/1) ... [2023-08-30 08:50:16,574 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:50:16" (1/1) ... [2023-08-30 08:50:16,576 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 08:50:16,581 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 08:50:16,581 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 08:50:16,581 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 08:50:16,582 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:50:16" (1/1) ... [2023-08-30 08:50:16,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 08:50:16,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:50:16,619 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 08:50:16,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 08:50:16,665 INFO L130 BoogieDeclarations]: Found specification of procedure BCSP_PnpStop [2023-08-30 08:50:16,665 INFO L138 BoogieDeclarations]: Found implementation of procedure BCSP_PnpStop [2023-08-30 08:50:16,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 08:50:16,665 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 08:50:16,665 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 08:50:16,666 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 08:50:16,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 08:50:16,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 08:50:16,666 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 08:50:16,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 08:50:16,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 08:50:16,668 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 08:50:16,824 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 08:50:16,825 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 08:50:16,987 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 08:50:17,023 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 08:50:17,028 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 08:50:17,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 08:50:17 BoogieIcfgContainer [2023-08-30 08:50:17,031 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 08:50:17,033 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 08:50:17,033 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 08:50:17,037 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 08:50:17,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 08:50:16" (1/3) ... [2023-08-30 08:50:17,040 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c425dc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 08:50:17, skipping insertion in model container [2023-08-30 08:50:17,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:50:16" (2/3) ... [2023-08-30 08:50:17,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c425dc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 08:50:17, skipping insertion in model container [2023-08-30 08:50:17,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 08:50:17" (3/3) ... [2023-08-30 08:50:17,043 INFO L112 eAbstractionObserver]: Analyzing ICFG qw2004-2b.i [2023-08-30 08:50:17,050 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 08:50:17,064 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 08:50:17,064 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-08-30 08:50:17,064 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 08:50:17,122 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 08:50:17,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 106 places, 108 transitions, 221 flow [2023-08-30 08:50:17,196 INFO L130 PetriNetUnfolder]: 6/107 cut-off events. [2023-08-30 08:50:17,196 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 08:50:17,202 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. [2023-08-30 08:50:17,203 INFO L82 GeneralOperation]: Start removeDead. Operand has 106 places, 108 transitions, 221 flow [2023-08-30 08:50:17,206 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 105 places, 107 transitions, 217 flow [2023-08-30 08:50:17,209 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 08:50:17,217 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 105 places, 107 transitions, 217 flow [2023-08-30 08:50:17,219 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 105 places, 107 transitions, 217 flow [2023-08-30 08:50:17,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 105 places, 107 transitions, 217 flow [2023-08-30 08:50:17,242 INFO L130 PetriNetUnfolder]: 6/107 cut-off events. [2023-08-30 08:50:17,242 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 08:50:17,243 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. [2023-08-30 08:50:17,245 INFO L119 LiptonReduction]: Number of co-enabled transitions 3248 [2023-08-30 08:50:19,883 INFO L134 LiptonReduction]: Checked pairs total: 4839 [2023-08-30 08:50:19,884 INFO L136 LiptonReduction]: Total number of compositions: 120 [2023-08-30 08:50:19,908 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 08:50:19,916 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;@79f5b2df, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 08:50:19,916 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-08-30 08:50:19,920 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2023-08-30 08:50:19,921 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 08:50:19,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:50:19,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 08:50:19,922 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)] === [2023-08-30 08:50:19,927 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:50:19,927 INFO L85 PathProgramCache]: Analyzing trace with hash 13829186, now seen corresponding path program 1 times [2023-08-30 08:50:19,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:50:19,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453298343] [2023-08-30 08:50:19,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:50:19,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:50:20,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:50:20,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:50:20,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:50:20,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453298343] [2023-08-30 08:50:20,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453298343] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:50:20,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:50:20,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 08:50:20,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047881103] [2023-08-30 08:50:20,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:50:20,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:50:20,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:50:20,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:50:20,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:50:20,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 228 [2023-08-30 08:50:20,196 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) [2023-08-30 08:50:20,197 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:50:20,197 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 228 [2023-08-30 08:50:20,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:50:20,321 INFO L130 PetriNetUnfolder]: 91/186 cut-off events. [2023-08-30 08:50:20,321 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 08:50:20,322 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. [2023-08-30 08:50:20,324 INFO L137 encePairwiseOnDemand]: 218/228 looper letters, 30 selfloop transitions, 7 changer transitions 0/38 dead transitions. [2023-08-30 08:50:20,325 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 38 transitions, 153 flow [2023-08-30 08:50:20,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:50:20,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:50:20,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 322 transitions. [2023-08-30 08:50:20,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47076023391812866 [2023-08-30 08:50:20,349 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 322 transitions. [2023-08-30 08:50:20,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 322 transitions. [2023-08-30 08:50:20,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:50:20,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 322 transitions. [2023-08-30 08:50:20,362 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) [2023-08-30 08:50:20,367 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) [2023-08-30 08:50:20,368 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) [2023-08-30 08:50:20,369 INFO L175 Difference]: Start difference. First operand has 23 places, 22 transitions, 47 flow. Second operand 3 states and 322 transitions. [2023-08-30 08:50:20,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 38 transitions, 153 flow [2023-08-30 08:50:20,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 38 transitions, 152 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:50:20,380 INFO L231 Difference]: Finished difference. Result has 26 places, 28 transitions, 104 flow [2023-08-30 08:50:20,382 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} [2023-08-30 08:50:20,385 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 3 predicate places. [2023-08-30 08:50:20,385 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 28 transitions, 104 flow [2023-08-30 08:50:20,385 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) [2023-08-30 08:50:20,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:50:20,386 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 08:50:20,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 08:50:20,386 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)] === [2023-08-30 08:50:20,387 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:50:20,387 INFO L85 PathProgramCache]: Analyzing trace with hash 13829187, now seen corresponding path program 1 times [2023-08-30 08:50:20,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:50:20,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303590950] [2023-08-30 08:50:20,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:50:20,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:50:20,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:50:20,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:50:20,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:50:20,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303590950] [2023-08-30 08:50:20,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303590950] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:50:20,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:50:20,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 08:50:20,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052244670] [2023-08-30 08:50:20,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:50:20,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:50:20,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:50:20,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:50:20,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:50:20,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 228 [2023-08-30 08:50:20,442 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) [2023-08-30 08:50:20,443 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:50:20,443 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 228 [2023-08-30 08:50:20,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:50:20,511 INFO L130 PetriNetUnfolder]: 98/195 cut-off events. [2023-08-30 08:50:20,512 INFO L131 PetriNetUnfolder]: For 75/77 co-relation queries the response was YES. [2023-08-30 08:50:20,513 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. [2023-08-30 08:50:20,514 INFO L137 encePairwiseOnDemand]: 221/228 looper letters, 34 selfloop transitions, 5 changer transitions 0/40 dead transitions. [2023-08-30 08:50:20,514 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 40 transitions, 216 flow [2023-08-30 08:50:20,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:50:20,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:50:20,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 317 transitions. [2023-08-30 08:50:20,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46345029239766083 [2023-08-30 08:50:20,516 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 317 transitions. [2023-08-30 08:50:20,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 317 transitions. [2023-08-30 08:50:20,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:50:20,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 317 transitions. [2023-08-30 08:50:20,518 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) [2023-08-30 08:50:20,520 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) [2023-08-30 08:50:20,520 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) [2023-08-30 08:50:20,520 INFO L175 Difference]: Start difference. First operand has 26 places, 28 transitions, 104 flow. Second operand 3 states and 317 transitions. [2023-08-30 08:50:20,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 40 transitions, 216 flow [2023-08-30 08:50:20,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 40 transitions, 200 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 08:50:20,523 INFO L231 Difference]: Finished difference. Result has 27 places, 28 transitions, 122 flow [2023-08-30 08:50:20,523 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} [2023-08-30 08:50:20,524 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 4 predicate places. [2023-08-30 08:50:20,524 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 28 transitions, 122 flow [2023-08-30 08:50:20,524 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) [2023-08-30 08:50:20,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:50:20,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 08:50:20,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 08:50:20,525 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)] === [2023-08-30 08:50:20,525 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:50:20,526 INFO L85 PathProgramCache]: Analyzing trace with hash 405004230, now seen corresponding path program 1 times [2023-08-30 08:50:20,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:50:20,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722652276] [2023-08-30 08:50:20,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:50:20,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:50:20,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:50:20,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:50:20,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:50:20,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722652276] [2023-08-30 08:50:20,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722652276] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:50:20,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:50:20,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 08:50:20,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174779734] [2023-08-30 08:50:20,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:50:20,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:50:20,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:50:20,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:50:20,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:50:20,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 228 [2023-08-30 08:50:20,600 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) [2023-08-30 08:50:20,600 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:50:20,600 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 228 [2023-08-30 08:50:20,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:50:20,650 INFO L130 PetriNetUnfolder]: 93/189 cut-off events. [2023-08-30 08:50:20,650 INFO L131 PetriNetUnfolder]: For 102/102 co-relation queries the response was YES. [2023-08-30 08:50:20,651 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. [2023-08-30 08:50:20,652 INFO L137 encePairwiseOnDemand]: 226/228 looper letters, 35 selfloop transitions, 1 changer transitions 0/37 dead transitions. [2023-08-30 08:50:20,652 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 37 transitions, 232 flow [2023-08-30 08:50:20,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:50:20,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:50:20,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 308 transitions. [2023-08-30 08:50:20,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4502923976608187 [2023-08-30 08:50:20,654 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 308 transitions. [2023-08-30 08:50:20,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 308 transitions. [2023-08-30 08:50:20,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:50:20,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 308 transitions. [2023-08-30 08:50:20,656 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) [2023-08-30 08:50:20,658 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) [2023-08-30 08:50:20,658 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) [2023-08-30 08:50:20,659 INFO L175 Difference]: Start difference. First operand has 27 places, 28 transitions, 122 flow. Second operand 3 states and 308 transitions. [2023-08-30 08:50:20,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 37 transitions, 232 flow [2023-08-30 08:50:20,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 37 transitions, 218 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 08:50:20,661 INFO L231 Difference]: Finished difference. Result has 28 places, 28 transitions, 117 flow [2023-08-30 08:50:20,661 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} [2023-08-30 08:50:20,662 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 5 predicate places. [2023-08-30 08:50:20,662 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 28 transitions, 117 flow [2023-08-30 08:50:20,662 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) [2023-08-30 08:50:20,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:50:20,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 08:50:20,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 08:50:20,663 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)] === [2023-08-30 08:50:20,664 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:50:20,664 INFO L85 PathProgramCache]: Analyzing trace with hash 406157430, now seen corresponding path program 2 times [2023-08-30 08:50:20,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:50:20,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562554496] [2023-08-30 08:50:20,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:50:20,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:50:20,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:50:20,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:50:20,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:50:20,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562554496] [2023-08-30 08:50:20,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562554496] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:50:20,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:50:20,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:50:20,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164842279] [2023-08-30 08:50:20,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:50:20,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 08:50:20,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:50:20,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 08:50:20,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 08:50:20,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 228 [2023-08-30 08:50:20,753 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) [2023-08-30 08:50:20,753 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:50:20,753 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 228 [2023-08-30 08:50:20,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:50:20,834 INFO L130 PetriNetUnfolder]: 83/179 cut-off events. [2023-08-30 08:50:20,834 INFO L131 PetriNetUnfolder]: For 91/91 co-relation queries the response was YES. [2023-08-30 08:50:20,835 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. [2023-08-30 08:50:20,836 INFO L137 encePairwiseOnDemand]: 218/228 looper letters, 31 selfloop transitions, 7 changer transitions 7/46 dead transitions. [2023-08-30 08:50:20,836 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 46 transitions, 251 flow [2023-08-30 08:50:20,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 08:50:20,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 08:50:20,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 422 transitions. [2023-08-30 08:50:20,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46271929824561403 [2023-08-30 08:50:20,838 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 422 transitions. [2023-08-30 08:50:20,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 422 transitions. [2023-08-30 08:50:20,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:50:20,839 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 422 transitions. [2023-08-30 08:50:20,840 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) [2023-08-30 08:50:20,842 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) [2023-08-30 08:50:20,843 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) [2023-08-30 08:50:20,843 INFO L175 Difference]: Start difference. First operand has 28 places, 28 transitions, 117 flow. Second operand 4 states and 422 transitions. [2023-08-30 08:50:20,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 46 transitions, 251 flow [2023-08-30 08:50:20,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 46 transitions, 248 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:50:20,845 INFO L231 Difference]: Finished difference. Result has 30 places, 26 transitions, 137 flow [2023-08-30 08:50:20,845 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} [2023-08-30 08:50:20,846 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 7 predicate places. [2023-08-30 08:50:20,846 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 26 transitions, 137 flow [2023-08-30 08:50:20,846 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) [2023-08-30 08:50:20,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:50:20,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:50:20,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 08:50:20,847 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)] === [2023-08-30 08:50:20,848 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:50:20,848 INFO L85 PathProgramCache]: Analyzing trace with hash -294224397, now seen corresponding path program 1 times [2023-08-30 08:50:20,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:50:20,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233021639] [2023-08-30 08:50:20,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:50:20,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:50:20,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:50:20,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:50:20,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:50:20,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233021639] [2023-08-30 08:50:20,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233021639] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:50:20,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:50:20,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 08:50:20,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810510337] [2023-08-30 08:50:20,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:50:20,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 08:50:20,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:50:20,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 08:50:20,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 08:50:20,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 228 [2023-08-30 08:50:20,905 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) [2023-08-30 08:50:20,905 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:50:20,905 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 228 [2023-08-30 08:50:20,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:50:20,995 INFO L130 PetriNetUnfolder]: 65/127 cut-off events. [2023-08-30 08:50:20,996 INFO L131 PetriNetUnfolder]: For 141/141 co-relation queries the response was YES. [2023-08-30 08:50:20,997 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. [2023-08-30 08:50:20,998 INFO L137 encePairwiseOnDemand]: 218/228 looper letters, 29 selfloop transitions, 9 changer transitions 0/38 dead transitions. [2023-08-30 08:50:20,999 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 38 transitions, 239 flow [2023-08-30 08:50:20,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 08:50:20,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 08:50:21,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 493 transitions. [2023-08-30 08:50:21,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4324561403508772 [2023-08-30 08:50:21,001 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 493 transitions. [2023-08-30 08:50:21,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 493 transitions. [2023-08-30 08:50:21,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:50:21,002 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 493 transitions. [2023-08-30 08:50:21,004 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) [2023-08-30 08:50:21,006 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) [2023-08-30 08:50:21,007 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) [2023-08-30 08:50:21,007 INFO L175 Difference]: Start difference. First operand has 30 places, 26 transitions, 137 flow. Second operand 5 states and 493 transitions. [2023-08-30 08:50:21,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 38 transitions, 239 flow [2023-08-30 08:50:21,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 38 transitions, 230 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-30 08:50:21,012 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 157 flow [2023-08-30 08:50:21,012 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} [2023-08-30 08:50:21,014 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 8 predicate places. [2023-08-30 08:50:21,015 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 157 flow [2023-08-30 08:50:21,016 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) [2023-08-30 08:50:21,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:50:21,016 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:50:21,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 08:50:21,017 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)] === [2023-08-30 08:50:21,017 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:50:21,017 INFO L85 PathProgramCache]: Analyzing trace with hash -294224398, now seen corresponding path program 1 times [2023-08-30 08:50:21,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:50:21,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212836542] [2023-08-30 08:50:21,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:50:21,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:50:21,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:50:21,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:50:21,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:50:21,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212836542] [2023-08-30 08:50:21,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212836542] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:50:21,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:50:21,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 08:50:21,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767118248] [2023-08-30 08:50:21,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:50:21,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 08:50:21,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:50:21,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 08:50:21,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 08:50:21,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 228 [2023-08-30 08:50:21,089 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) [2023-08-30 08:50:21,089 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:50:21,089 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 228 [2023-08-30 08:50:21,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:50:21,183 INFO L130 PetriNetUnfolder]: 78/161 cut-off events. [2023-08-30 08:50:21,183 INFO L131 PetriNetUnfolder]: For 210/210 co-relation queries the response was YES. [2023-08-30 08:50:21,184 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. [2023-08-30 08:50:21,185 INFO L137 encePairwiseOnDemand]: 220/228 looper letters, 11 selfloop transitions, 2 changer transitions 31/44 dead transitions. [2023-08-30 08:50:21,185 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 44 transitions, 279 flow [2023-08-30 08:50:21,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 08:50:21,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 08:50:21,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 593 transitions. [2023-08-30 08:50:21,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4334795321637427 [2023-08-30 08:50:21,187 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 593 transitions. [2023-08-30 08:50:21,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 593 transitions. [2023-08-30 08:50:21,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:50:21,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 593 transitions. [2023-08-30 08:50:21,190 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) [2023-08-30 08:50:21,192 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) [2023-08-30 08:50:21,192 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) [2023-08-30 08:50:21,193 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 157 flow. Second operand 6 states and 593 transitions. [2023-08-30 08:50:21,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 44 transitions, 279 flow [2023-08-30 08:50:21,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 44 transitions, 236 flow, removed 9 selfloop flow, removed 5 redundant places. [2023-08-30 08:50:21,195 INFO L231 Difference]: Finished difference. Result has 33 places, 13 transitions, 56 flow [2023-08-30 08:50:21,195 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} [2023-08-30 08:50:21,196 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 10 predicate places. [2023-08-30 08:50:21,196 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 13 transitions, 56 flow [2023-08-30 08:50:21,196 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) [2023-08-30 08:50:21,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:50:21,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:50:21,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 08:50:21,197 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)] === [2023-08-30 08:50:21,197 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:50:21,197 INFO L85 PathProgramCache]: Analyzing trace with hash 909399496, now seen corresponding path program 1 times [2023-08-30 08:50:21,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:50:21,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121117326] [2023-08-30 08:50:21,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:50:21,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:50:21,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:50:21,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:50:21,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:50:21,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121117326] [2023-08-30 08:50:21,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121117326] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:50:21,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:50:21,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 08:50:21,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050764559] [2023-08-30 08:50:21,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:50:21,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 08:50:21,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:50:21,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 08:50:21,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 08:50:21,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 228 [2023-08-30 08:50:21,281 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) [2023-08-30 08:50:21,282 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:50:21,282 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 228 [2023-08-30 08:50:21,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:50:21,326 INFO L130 PetriNetUnfolder]: 14/39 cut-off events. [2023-08-30 08:50:21,326 INFO L131 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2023-08-30 08:50:21,326 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. [2023-08-30 08:50:21,327 INFO L137 encePairwiseOnDemand]: 223/228 looper letters, 0 selfloop transitions, 0 changer transitions 20/20 dead transitions. [2023-08-30 08:50:21,327 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 20 transitions, 106 flow [2023-08-30 08:50:21,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 08:50:21,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 08:50:21,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 567 transitions. [2023-08-30 08:50:21,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4144736842105263 [2023-08-30 08:50:21,329 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 567 transitions. [2023-08-30 08:50:21,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 567 transitions. [2023-08-30 08:50:21,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:50:21,329 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 567 transitions. [2023-08-30 08:50:21,331 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) [2023-08-30 08:50:21,333 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) [2023-08-30 08:50:21,333 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) [2023-08-30 08:50:21,333 INFO L175 Difference]: Start difference. First operand has 33 places, 13 transitions, 56 flow. Second operand 6 states and 567 transitions. [2023-08-30 08:50:21,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 20 transitions, 106 flow [2023-08-30 08:50:21,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 20 transitions, 91 flow, removed 1 selfloop flow, removed 8 redundant places. [2023-08-30 08:50:21,334 INFO L231 Difference]: Finished difference. Result has 24 places, 0 transitions, 0 flow [2023-08-30 08:50:21,334 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} [2023-08-30 08:50:21,335 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 1 predicate places. [2023-08-30 08:50:21,335 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 0 transitions, 0 flow [2023-08-30 08:50:21,335 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) [2023-08-30 08:50:21,337 INFO L805 garLoopResultBuilder]: Registering result SAFE for location BCSP_PnpStopErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 9 remaining) [2023-08-30 08:50:21,338 INFO L805 garLoopResultBuilder]: Registering result SAFE for location BCSP_PnpStopErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 9 remaining) [2023-08-30 08:50:21,338 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 9 remaining) [2023-08-30 08:50:21,338 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 9 remaining) [2023-08-30 08:50:21,338 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 9 remaining) [2023-08-30 08:50:21,338 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 9 remaining) [2023-08-30 08:50:21,338 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 9 remaining) [2023-08-30 08:50:21,339 INFO L805 garLoopResultBuilder]: Registering result SAFE for location BCSP_PnpStopErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 9 remaining) [2023-08-30 08:50:21,339 INFO L805 garLoopResultBuilder]: Registering result SAFE for location BCSP_PnpStopErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 9 remaining) [2023-08-30 08:50:21,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 08:50:21,339 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2023-08-30 08:50:21,344 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 08:50:21,344 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 08:50:21,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 08:50:21 BasicIcfg [2023-08-30 08:50:21,347 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 08:50:21,347 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 08:50:21,347 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 08:50:21,347 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 08:50:21,348 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 08:50:17" (3/4) ... [2023-08-30 08:50:21,350 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 08:50:21,355 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure BCSP_PnpStop [2023-08-30 08:50:21,358 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 25 nodes and edges [2023-08-30 08:50:21,359 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-08-30 08:50:21,359 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 08:50:21,359 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 08:50:21,403 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 08:50:21,403 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 08:50:21,403 INFO L158 Benchmark]: Toolchain (without parser) took 5399.99ms. Allocated memory was 60.8MB in the beginning and 107.0MB in the end (delta: 46.1MB). Free memory was 37.8MB in the beginning and 75.0MB in the end (delta: -37.2MB). Peak memory consumption was 12.3MB. Max. memory is 16.1GB. [2023-08-30 08:50:21,404 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 50.3MB. Free memory was 28.5MB in the beginning and 28.5MB in the end (delta: 33.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 08:50:21,404 INFO L158 Benchmark]: CACSL2BoogieTranslator took 459.72ms. Allocated memory is still 60.8MB. Free memory was 37.7MB in the beginning and 31.5MB in the end (delta: 6.1MB). Peak memory consumption was 15.8MB. Max. memory is 16.1GB. [2023-08-30 08:50:21,404 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.51ms. Allocated memory is still 60.8MB. Free memory was 31.5MB in the beginning and 29.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 08:50:21,404 INFO L158 Benchmark]: Boogie Preprocessor took 52.93ms. Allocated memory is still 60.8MB. Free memory was 29.4MB in the beginning and 28.0MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 08:50:21,405 INFO L158 Benchmark]: RCFGBuilder took 450.52ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 28.0MB in the beginning and 37.5MB in the end (delta: -9.5MB). Peak memory consumption was 3.0MB. Max. memory is 16.1GB. [2023-08-30 08:50:21,405 INFO L158 Benchmark]: TraceAbstraction took 4314.01ms. Allocated memory was 73.4MB in the beginning and 107.0MB in the end (delta: 33.6MB). Free memory was 36.6MB in the beginning and 78.2MB in the end (delta: -41.6MB). Peak memory consumption was 41.8MB. Max. memory is 16.1GB. [2023-08-30 08:50:21,405 INFO L158 Benchmark]: Witness Printer took 55.70ms. Allocated memory is still 107.0MB. Free memory was 78.2MB in the beginning and 75.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 08:50:21,407 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 50.3MB. Free memory was 28.5MB in the beginning and 28.5MB in the end (delta: 33.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 459.72ms. Allocated memory is still 60.8MB. Free memory was 37.7MB in the beginning and 31.5MB in the end (delta: 6.1MB). Peak memory consumption was 15.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.51ms. Allocated memory is still 60.8MB. Free memory was 31.5MB in the beginning and 29.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.93ms. Allocated memory is still 60.8MB. Free memory was 29.4MB in the beginning and 28.0MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 450.52ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 28.0MB in the beginning and 37.5MB in the end (delta: -9.5MB). Peak memory consumption was 3.0MB. Max. memory is 16.1GB. * TraceAbstraction took 4314.01ms. Allocated memory was 73.4MB in the beginning and 107.0MB in the end (delta: 33.6MB). Free memory was 36.6MB in the beginning and 78.2MB in the end (delta: -41.6MB). Peak memory consumption was 41.8MB. Max. memory is 16.1GB. * Witness Printer took 55.70ms. Allocated memory is still 107.0MB. Free memory was 78.2MB in the beginning and 75.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 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: 4.2s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.7s, 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! [2023-08-30 08:50:21,433 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