./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe027_power.opt.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-wmm/safe027_power.opt.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 3edc5a2d9ce2881b3565fd36253c94b9cf356a0dafd043fa3f9d27823541c09b --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 08:49:26,548 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 08:49:26,550 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 08:49:26,581 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 08:49:26,582 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 08:49:26,584 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 08:49:26,587 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 08:49:26,589 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 08:49:26,591 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 08:49:26,595 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 08:49:26,596 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 08:49:26,597 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 08:49:26,597 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 08:49:26,598 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 08:49:26,598 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 08:49:26,599 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 08:49:26,600 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 08:49:26,600 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 08:49:26,601 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 08:49:26,603 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 08:49:26,609 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 08:49:26,612 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 08:49:26,613 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 08:49:26,614 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 08:49:26,617 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 08:49:26,617 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 08:49:26,617 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 08:49:26,618 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 08:49:26,619 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 08:49:26,620 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 08:49:26,620 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 08:49:26,621 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 08:49:26,621 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 08:49:26,622 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 08:49:26,623 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 08:49:26,623 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 08:49:26,624 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 08:49:26,624 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 08:49:26,624 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 08:49:26,625 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 08:49:26,626 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 08:49:26,627 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 08:49:26,658 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 08:49:26,659 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 08:49:26,659 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 08:49:26,660 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 08:49:26,660 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 08:49:26,661 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 08:49:26,661 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 08:49:26,661 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 08:49:26,662 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 08:49:26,662 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 08:49:26,663 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 08:49:26,663 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 08:49:26,663 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 08:49:26,663 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 08:49:26,663 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 08:49:26,664 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 08:49:26,664 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 08:49:26,664 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 08:49:26,664 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 08:49:26,664 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 08:49:26,665 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 08:49:26,665 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 08:49:26,665 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 08:49:26,665 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 08:49:26,665 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 08:49:26,666 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 08:49:26,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 08:49:26,666 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 08:49:26,666 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 08:49:26,666 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 08:49:26,667 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 08:49:26,667 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 08:49:26,667 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 08:49:26,667 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 08:49:26,668 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 08:49:26,668 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 08:49:26,668 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 08:49:26,668 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3edc5a2d9ce2881b3565fd36253c94b9cf356a0dafd043fa3f9d27823541c09b Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 08:49:26,976 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 08:49:26,996 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 08:49:26,998 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 08:49:26,999 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 08:49:26,999 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 08:49:27,001 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe027_power.opt.i [2023-08-30 08:49:28,209 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 08:49:28,485 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 08:49:28,499 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe027_power.opt.i [2023-08-30 08:49:28,523 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19c2069e2/c877818564e045879377dfabbb8f613e/FLAG7fe746fba [2023-08-30 08:49:28,542 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19c2069e2/c877818564e045879377dfabbb8f613e [2023-08-30 08:49:28,544 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 08:49:28,546 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 08:49:28,548 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 08:49:28,549 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 08:49:28,551 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 08:49:28,552 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 08:49:28" (1/1) ... [2023-08-30 08:49:28,555 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13e03bfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:49:28, skipping insertion in model container [2023-08-30 08:49:28,555 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 08:49:28" (1/1) ... [2023-08-30 08:49:28,561 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 08:49:28,617 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 08:49:28,779 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-wmm/safe027_power.opt.i[994,1007] [2023-08-30 08:49:28,991 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 08:49:29,010 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 08:49:29,027 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-wmm/safe027_power.opt.i[994,1007] [2023-08-30 08:49:29,096 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 08:49:29,144 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 08:49:29,144 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 08:49:29,150 INFO L208 MainTranslator]: Completed translation [2023-08-30 08:49:29,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:49:29 WrapperNode [2023-08-30 08:49:29,151 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 08:49:29,152 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 08:49:29,153 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 08:49:29,153 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 08:49:29,158 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:49:29" (1/1) ... [2023-08-30 08:49:29,176 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:49:29" (1/1) ... [2023-08-30 08:49:29,202 INFO L138 Inliner]: procedures = 177, calls = 88, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 197 [2023-08-30 08:49:29,203 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 08:49:29,208 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 08:49:29,208 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 08:49:29,209 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 08:49:29,215 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:49:29" (1/1) ... [2023-08-30 08:49:29,215 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:49:29" (1/1) ... [2023-08-30 08:49:29,220 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:49:29" (1/1) ... [2023-08-30 08:49:29,221 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:49:29" (1/1) ... [2023-08-30 08:49:29,231 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:49:29" (1/1) ... [2023-08-30 08:49:29,233 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:49:29" (1/1) ... [2023-08-30 08:49:29,251 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:49:29" (1/1) ... [2023-08-30 08:49:29,254 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:49:29" (1/1) ... [2023-08-30 08:49:29,258 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 08:49:29,259 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 08:49:29,259 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 08:49:29,259 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 08:49:29,260 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:49:29" (1/1) ... [2023-08-30 08:49:29,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 08:49:29,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:49:29,307 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 08:49:29,315 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 08:49:29,341 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 08:49:29,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 08:49:29,342 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 08:49:29,342 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 08:49:29,342 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 08:49:29,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 08:49:29,343 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-30 08:49:29,343 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-30 08:49:29,343 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-30 08:49:29,343 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-30 08:49:29,343 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-30 08:49:29,343 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-30 08:49:29,343 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-30 08:49:29,343 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-30 08:49:29,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 08:49:29,344 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 08:49:29,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 08:49:29,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 08:49:29,345 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 08:49:29,584 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 08:49:29,586 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 08:49:30,071 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 08:49:30,479 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 08:49:30,479 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 08:49:30,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 08:49:30 BoogieIcfgContainer [2023-08-30 08:49:30,482 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 08:49:30,484 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 08:49:30,484 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 08:49:30,487 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 08:49:30,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 08:49:28" (1/3) ... [2023-08-30 08:49:30,488 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cfb624b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 08:49:30, skipping insertion in model container [2023-08-30 08:49:30,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:49:29" (2/3) ... [2023-08-30 08:49:30,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cfb624b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 08:49:30, skipping insertion in model container [2023-08-30 08:49:30,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 08:49:30" (3/3) ... [2023-08-30 08:49:30,490 INFO L112 eAbstractionObserver]: Analyzing ICFG safe027_power.opt.i [2023-08-30 08:49:30,498 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 08:49:30,507 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 08:49:30,507 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-30 08:49:30,507 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 08:49:30,599 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 08:49:30,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 163 places, 152 transitions, 324 flow [2023-08-30 08:49:30,707 INFO L130 PetriNetUnfolder]: 2/148 cut-off events. [2023-08-30 08:49:30,708 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 08:49:30,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161 conditions, 148 events. 2/148 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 80 event pairs, 0 based on Foata normal form. 0/138 useless extension candidates. Maximal degree in co-relation 90. Up to 2 conditions per place. [2023-08-30 08:49:30,714 INFO L82 GeneralOperation]: Start removeDead. Operand has 163 places, 152 transitions, 324 flow [2023-08-30 08:49:30,719 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 159 places, 148 transitions, 308 flow [2023-08-30 08:49:30,725 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 08:49:30,732 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 159 places, 148 transitions, 308 flow [2023-08-30 08:49:30,738 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 159 places, 148 transitions, 308 flow [2023-08-30 08:49:30,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 159 places, 148 transitions, 308 flow [2023-08-30 08:49:30,783 INFO L130 PetriNetUnfolder]: 2/148 cut-off events. [2023-08-30 08:49:30,787 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 08:49:30,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161 conditions, 148 events. 2/148 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 80 event pairs, 0 based on Foata normal form. 0/138 useless extension candidates. Maximal degree in co-relation 90. Up to 2 conditions per place. [2023-08-30 08:49:30,791 INFO L119 LiptonReduction]: Number of co-enabled transitions 3482 [2023-08-30 08:49:38,658 INFO L134 LiptonReduction]: Checked pairs total: 12084 [2023-08-30 08:49:38,658 INFO L136 LiptonReduction]: Total number of compositions: 121 [2023-08-30 08:49:38,669 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 08:49:38,674 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;@5ffb2877, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 08:49:38,674 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-08-30 08:49:38,678 INFO L130 PetriNetUnfolder]: 0/6 cut-off events. [2023-08-30 08:49:38,678 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 08:49:38,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:49:38,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 08:49:38,680 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 08:49:38,683 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:49:38,684 INFO L85 PathProgramCache]: Analyzing trace with hash 951455386, now seen corresponding path program 1 times [2023-08-30 08:49:38,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:49:38,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266118948] [2023-08-30 08:49:38,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:49:38,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:49:38,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:49:39,074 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 08:49:39,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:49:39,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266118948] [2023-08-30 08:49:39,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266118948] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:49:39,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:49:39,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 08:49:39,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198618808] [2023-08-30 08:49:39,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:49:39,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:49:39,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:49:39,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:49:39,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:49:39,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 273 [2023-08-30 08:49:39,137 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 35 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 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 08:49:39,137 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:49:39,138 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 273 [2023-08-30 08:49:39,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:49:41,952 INFO L130 PetriNetUnfolder]: 12667/17482 cut-off events. [2023-08-30 08:49:41,953 INFO L131 PetriNetUnfolder]: For 126/126 co-relation queries the response was YES. [2023-08-30 08:49:41,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35238 conditions, 17482 events. 12667/17482 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 759. Compared 95502 event pairs, 3538 based on Foata normal form. 752/12963 useless extension candidates. Maximal degree in co-relation 35226. Up to 15548 conditions per place. [2023-08-30 08:49:42,065 INFO L137 encePairwiseOnDemand]: 259/273 looper letters, 51 selfloop transitions, 5 changer transitions 0/57 dead transitions. [2023-08-30 08:49:42,066 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 57 transitions, 247 flow [2023-08-30 08:49:42,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:49:42,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:49:42,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 438 transitions. [2023-08-30 08:49:42,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5347985347985348 [2023-08-30 08:49:42,079 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 438 transitions. [2023-08-30 08:49:42,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 438 transitions. [2023-08-30 08:49:42,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:49:42,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 438 transitions. [2023-08-30 08:49:42,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 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 08:49:42,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 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 08:49:42,092 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 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 08:49:42,094 INFO L175 Difference]: Start difference. First operand has 47 places, 35 transitions, 82 flow. Second operand 3 states and 438 transitions. [2023-08-30 08:49:42,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 57 transitions, 247 flow [2023-08-30 08:49:42,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 57 transitions, 240 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 08:49:42,101 INFO L231 Difference]: Finished difference. Result has 46 places, 38 transitions, 123 flow [2023-08-30 08:49:42,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=123, PETRI_PLACES=46, PETRI_TRANSITIONS=38} [2023-08-30 08:49:42,106 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -1 predicate places. [2023-08-30 08:49:42,106 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 38 transitions, 123 flow [2023-08-30 08:49:42,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 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 08:49:42,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:49:42,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:49:42,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 08:49:42,108 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 08:49:42,116 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:49:42,117 INFO L85 PathProgramCache]: Analyzing trace with hash -700736356, now seen corresponding path program 1 times [2023-08-30 08:49:42,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:49:42,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583033589] [2023-08-30 08:49:42,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:49:42,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:49:42,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:49:42,267 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 08:49:42,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:49:42,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583033589] [2023-08-30 08:49:42,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583033589] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:49:42,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:49:42,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:49:42,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130125429] [2023-08-30 08:49:42,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:49:42,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 08:49:42,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:49:42,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 08:49:42,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 08:49:42,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 273 [2023-08-30 08:49:42,287 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 38 transitions, 123 flow. Second operand has 4 states, 4 states have (on average 126.5) internal successors, (506), 4 states have internal predecessors, (506), 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 08:49:42,288 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:49:42,288 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 273 [2023-08-30 08:49:42,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:49:44,110 INFO L130 PetriNetUnfolder]: 7787/10726 cut-off events. [2023-08-30 08:49:44,110 INFO L131 PetriNetUnfolder]: For 608/608 co-relation queries the response was YES. [2023-08-30 08:49:44,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26137 conditions, 10726 events. 7787/10726 cut-off events. For 608/608 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 54596 event pairs, 2050 based on Foata normal form. 0/8743 useless extension candidates. Maximal degree in co-relation 26126. Up to 8791 conditions per place. [2023-08-30 08:49:44,175 INFO L137 encePairwiseOnDemand]: 264/273 looper letters, 47 selfloop transitions, 5 changer transitions 0/53 dead transitions. [2023-08-30 08:49:44,175 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 53 transitions, 255 flow [2023-08-30 08:49:44,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 08:49:44,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 08:49:44,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 552 transitions. [2023-08-30 08:49:44,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5054945054945055 [2023-08-30 08:49:44,180 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 552 transitions. [2023-08-30 08:49:44,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 552 transitions. [2023-08-30 08:49:44,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:49:44,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 552 transitions. [2023-08-30 08:49:44,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 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 08:49:44,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 273.0) internal successors, (1365), 5 states have internal predecessors, (1365), 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 08:49:44,188 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 273.0) internal successors, (1365), 5 states have internal predecessors, (1365), 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 08:49:44,188 INFO L175 Difference]: Start difference. First operand has 46 places, 38 transitions, 123 flow. Second operand 4 states and 552 transitions. [2023-08-30 08:49:44,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 53 transitions, 255 flow [2023-08-30 08:49:44,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 53 transitions, 250 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:49:44,192 INFO L231 Difference]: Finished difference. Result has 44 places, 34 transitions, 112 flow [2023-08-30 08:49:44,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=112, PETRI_PLACES=44, PETRI_TRANSITIONS=34} [2023-08-30 08:49:44,193 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -3 predicate places. [2023-08-30 08:49:44,193 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 34 transitions, 112 flow [2023-08-30 08:49:44,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 126.5) internal successors, (506), 4 states have internal predecessors, (506), 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 08:49:44,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:49:44,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:49:44,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 08:49:44,195 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 08:49:44,196 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:49:44,196 INFO L85 PathProgramCache]: Analyzing trace with hash -700736355, now seen corresponding path program 1 times [2023-08-30 08:49:44,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:49:44,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717022574] [2023-08-30 08:49:44,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:49:44,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:49:44,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:49:44,315 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 08:49:44,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:49:44,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717022574] [2023-08-30 08:49:44,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717022574] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:49:44,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:49:44,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:49:44,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075947292] [2023-08-30 08:49:44,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:49:44,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 08:49:44,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:49:44,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 08:49:44,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 08:49:44,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 273 [2023-08-30 08:49:44,333 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 34 transitions, 112 flow. Second operand has 4 states, 4 states have (on average 126.5) internal successors, (506), 4 states have internal predecessors, (506), 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 08:49:44,334 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:49:44,334 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 273 [2023-08-30 08:49:44,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:49:45,365 INFO L130 PetriNetUnfolder]: 5183/7188 cut-off events. [2023-08-30 08:49:45,365 INFO L131 PetriNetUnfolder]: For 1932/1932 co-relation queries the response was YES. [2023-08-30 08:49:45,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17296 conditions, 7188 events. 5183/7188 cut-off events. For 1932/1932 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 34775 event pairs, 1418 based on Foata normal form. 0/6557 useless extension candidates. Maximal degree in co-relation 17284. Up to 2700 conditions per place. [2023-08-30 08:49:45,406 INFO L137 encePairwiseOnDemand]: 264/273 looper letters, 64 selfloop transitions, 9 changer transitions 0/74 dead transitions. [2023-08-30 08:49:45,406 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 74 transitions, 356 flow [2023-08-30 08:49:45,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 08:49:45,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 08:49:45,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 573 transitions. [2023-08-30 08:49:45,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5247252747252747 [2023-08-30 08:49:45,409 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 573 transitions. [2023-08-30 08:49:45,409 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 573 transitions. [2023-08-30 08:49:45,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:49:45,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 573 transitions. [2023-08-30 08:49:45,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 143.25) internal successors, (573), 4 states have internal predecessors, (573), 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 08:49:45,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 273.0) internal successors, (1365), 5 states have internal predecessors, (1365), 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 08:49:45,414 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 273.0) internal successors, (1365), 5 states have internal predecessors, (1365), 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 08:49:45,415 INFO L175 Difference]: Start difference. First operand has 44 places, 34 transitions, 112 flow. Second operand 4 states and 573 transitions. [2023-08-30 08:49:45,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 74 transitions, 356 flow [2023-08-30 08:49:45,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 74 transitions, 350 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 08:49:45,420 INFO L231 Difference]: Finished difference. Result has 46 places, 38 transitions, 164 flow [2023-08-30 08:49:45,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=164, PETRI_PLACES=46, PETRI_TRANSITIONS=38} [2023-08-30 08:49:45,421 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -1 predicate places. [2023-08-30 08:49:45,421 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 38 transitions, 164 flow [2023-08-30 08:49:45,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 126.5) internal successors, (506), 4 states have internal predecessors, (506), 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 08:49:45,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:49:45,422 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:49:45,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 08:49:45,423 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 08:49:45,423 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:49:45,423 INFO L85 PathProgramCache]: Analyzing trace with hash -121454044, now seen corresponding path program 1 times [2023-08-30 08:49:45,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:49:45,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646556264] [2023-08-30 08:49:45,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:49:45,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:49:45,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:49:45,558 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 08:49:45,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:49:45,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646556264] [2023-08-30 08:49:45,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646556264] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:49:45,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:49:45,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 08:49:45,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365285587] [2023-08-30 08:49:45,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:49:45,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 08:49:45,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:49:45,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 08:49:45,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-30 08:49:45,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 273 [2023-08-30 08:49:45,572 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 38 transitions, 164 flow. Second operand has 5 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 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 08:49:45,573 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:49:45,573 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 273 [2023-08-30 08:49:45,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:49:46,514 INFO L130 PetriNetUnfolder]: 4715/6462 cut-off events. [2023-08-30 08:49:46,514 INFO L131 PetriNetUnfolder]: For 3972/3972 co-relation queries the response was YES. [2023-08-30 08:49:46,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17835 conditions, 6462 events. 4715/6462 cut-off events. For 3972/3972 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 30416 event pairs, 1352 based on Foata normal form. 0/6167 useless extension candidates. Maximal degree in co-relation 17822. Up to 2700 conditions per place. [2023-08-30 08:49:46,543 INFO L137 encePairwiseOnDemand]: 264/273 looper letters, 75 selfloop transitions, 13 changer transitions 4/93 dead transitions. [2023-08-30 08:49:46,543 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 93 transitions, 486 flow [2023-08-30 08:49:46,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 08:49:46,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 08:49:46,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 716 transitions. [2023-08-30 08:49:46,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5245421245421246 [2023-08-30 08:49:46,546 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 716 transitions. [2023-08-30 08:49:46,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 716 transitions. [2023-08-30 08:49:46,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:49:46,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 716 transitions. [2023-08-30 08:49:46,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 143.2) internal successors, (716), 5 states have internal predecessors, (716), 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 08:49:46,551 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 273.0) internal successors, (1638), 6 states have internal predecessors, (1638), 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 08:49:46,551 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 273.0) internal successors, (1638), 6 states have internal predecessors, (1638), 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 08:49:46,552 INFO L175 Difference]: Start difference. First operand has 46 places, 38 transitions, 164 flow. Second operand 5 states and 716 transitions. [2023-08-30 08:49:46,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 93 transitions, 486 flow [2023-08-30 08:49:46,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 93 transitions, 468 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-30 08:49:46,561 INFO L231 Difference]: Finished difference. Result has 49 places, 38 transitions, 188 flow [2023-08-30 08:49:46,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=188, PETRI_PLACES=49, PETRI_TRANSITIONS=38} [2023-08-30 08:49:46,562 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 2 predicate places. [2023-08-30 08:49:46,562 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 38 transitions, 188 flow [2023-08-30 08:49:46,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 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 08:49:46,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:49:46,563 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:49:46,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 08:49:46,564 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-30 08:49:46,564 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:49:46,564 INFO L85 PathProgramCache]: Analyzing trace with hash 785124358, now seen corresponding path program 1 times [2023-08-30 08:49:46,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:49:46,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828673272] [2023-08-30 08:49:46,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:49:46,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:49:46,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:49:46,707 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 08:49:46,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:49:46,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828673272] [2023-08-30 08:49:46,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828673272] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:49:46,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:49:46,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 08:49:46,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629901359] [2023-08-30 08:49:46,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:49:46,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 08:49:46,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:49:46,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 08:49:46,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-30 08:49:46,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 273 [2023-08-30 08:49:46,718 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 38 transitions, 188 flow. Second operand has 6 states, 6 states have (on average 127.33333333333333) internal successors, (764), 6 states have internal predecessors, (764), 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 08:49:46,718 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:49:46,718 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 273 [2023-08-30 08:49:46,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:49:47,738 INFO L130 PetriNetUnfolder]: 4672/6389 cut-off events. [2023-08-30 08:49:47,739 INFO L131 PetriNetUnfolder]: For 4882/4882 co-relation queries the response was YES. [2023-08-30 08:49:47,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18066 conditions, 6389 events. 4672/6389 cut-off events. For 4882/4882 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 30027 event pairs, 1352 based on Foata normal form. 24/6147 useless extension candidates. Maximal degree in co-relation 18052. Up to 2700 conditions per place. [2023-08-30 08:49:47,759 INFO L137 encePairwiseOnDemand]: 264/273 looper letters, 0 selfloop transitions, 0 changer transitions 85/85 dead transitions. [2023-08-30 08:49:47,759 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 85 transitions, 438 flow [2023-08-30 08:49:47,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 08:49:47,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 08:49:47,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 832 transitions. [2023-08-30 08:49:47,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5079365079365079 [2023-08-30 08:49:47,763 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 832 transitions. [2023-08-30 08:49:47,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 832 transitions. [2023-08-30 08:49:47,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:49:47,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 832 transitions. [2023-08-30 08:49:47,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 138.66666666666666) internal successors, (832), 6 states have internal predecessors, (832), 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 08:49:47,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 273.0) internal successors, (1911), 7 states have internal predecessors, (1911), 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 08:49:47,769 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 273.0) internal successors, (1911), 7 states have internal predecessors, (1911), 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 08:49:47,769 INFO L175 Difference]: Start difference. First operand has 49 places, 38 transitions, 188 flow. Second operand 6 states and 832 transitions. [2023-08-30 08:49:47,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 85 transitions, 438 flow [2023-08-30 08:49:47,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 85 transitions, 383 flow, removed 8 selfloop flow, removed 6 redundant places. [2023-08-30 08:49:47,902 INFO L231 Difference]: Finished difference. Result has 44 places, 0 transitions, 0 flow [2023-08-30 08:49:47,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=44, PETRI_TRANSITIONS=0} [2023-08-30 08:49:47,905 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -3 predicate places. [2023-08-30 08:49:47,905 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 0 transitions, 0 flow [2023-08-30 08:49:47,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 127.33333333333333) internal successors, (764), 6 states have internal predecessors, (764), 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 08:49:47,908 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 20 remaining) [2023-08-30 08:49:47,908 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 20 remaining) [2023-08-30 08:49:47,908 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 20 remaining) [2023-08-30 08:49:47,909 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 20 remaining) [2023-08-30 08:49:47,910 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 20 remaining) [2023-08-30 08:49:47,910 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 20 remaining) [2023-08-30 08:49:47,910 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 20 remaining) [2023-08-30 08:49:47,910 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 20 remaining) [2023-08-30 08:49:47,911 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 20 remaining) [2023-08-30 08:49:47,914 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 20 remaining) [2023-08-30 08:49:47,915 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 20 remaining) [2023-08-30 08:49:47,916 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 20 remaining) [2023-08-30 08:49:47,916 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 20 remaining) [2023-08-30 08:49:47,916 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 20 remaining) [2023-08-30 08:49:47,919 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 20 remaining) [2023-08-30 08:49:47,919 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 20 remaining) [2023-08-30 08:49:47,919 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 20 remaining) [2023-08-30 08:49:47,919 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 20 remaining) [2023-08-30 08:49:47,920 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 20 remaining) [2023-08-30 08:49:47,920 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 20 remaining) [2023-08-30 08:49:47,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 08:49:47,920 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-30 08:49:47,925 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 08:49:47,926 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 08:49:47,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 08:49:47 BasicIcfg [2023-08-30 08:49:47,929 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 08:49:47,930 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 08:49:47,930 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 08:49:47,930 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 08:49:47,931 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 08:49:30" (3/4) ... [2023-08-30 08:49:47,933 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 08:49:47,937 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-08-30 08:49:47,937 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-08-30 08:49:47,937 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-08-30 08:49:47,937 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2023-08-30 08:49:47,943 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 39 nodes and edges [2023-08-30 08:49:47,944 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2023-08-30 08:49:47,944 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-30 08:49:47,944 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 08:49:47,988 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 08:49:47,988 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 08:49:47,989 INFO L158 Benchmark]: Toolchain (without parser) took 19442.71ms. Allocated memory was 67.1MB in the beginning and 1.7GB in the end (delta: 1.7GB). Free memory was 37.8MB in the beginning and 867.1MB in the end (delta: -829.3MB). Peak memory consumption was 835.1MB. Max. memory is 16.1GB. [2023-08-30 08:49:47,989 INFO L158 Benchmark]: CDTParser took 0.95ms. Allocated memory is still 67.1MB. Free memory was 45.1MB in the beginning and 45.0MB in the end (delta: 97.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 08:49:47,989 INFO L158 Benchmark]: CACSL2BoogieTranslator took 603.13ms. Allocated memory was 67.1MB in the beginning and 83.9MB in the end (delta: 16.8MB). Free memory was 37.8MB in the beginning and 49.6MB in the end (delta: -11.8MB). Peak memory consumption was 14.8MB. Max. memory is 16.1GB. [2023-08-30 08:49:47,990 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.71ms. Allocated memory is still 83.9MB. Free memory was 49.2MB in the beginning and 46.8MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 08:49:47,990 INFO L158 Benchmark]: Boogie Preprocessor took 50.19ms. Allocated memory is still 83.9MB. Free memory was 46.8MB in the beginning and 44.0MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 08:49:47,990 INFO L158 Benchmark]: RCFGBuilder took 1223.20ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 44.0MB in the beginning and 64.6MB in the end (delta: -20.6MB). Peak memory consumption was 14.6MB. Max. memory is 16.1GB. [2023-08-30 08:49:47,991 INFO L158 Benchmark]: TraceAbstraction took 17445.56ms. Allocated memory was 100.7MB in the beginning and 1.7GB in the end (delta: 1.6GB). Free memory was 64.5MB in the beginning and 870.3MB in the end (delta: -805.8MB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2023-08-30 08:49:47,991 INFO L158 Benchmark]: Witness Printer took 58.36ms. Allocated memory is still 1.7GB. Free memory was 870.3MB in the beginning and 867.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 08:49:47,992 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.95ms. Allocated memory is still 67.1MB. Free memory was 45.1MB in the beginning and 45.0MB in the end (delta: 97.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 603.13ms. Allocated memory was 67.1MB in the beginning and 83.9MB in the end (delta: 16.8MB). Free memory was 37.8MB in the beginning and 49.6MB in the end (delta: -11.8MB). Peak memory consumption was 14.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.71ms. Allocated memory is still 83.9MB. Free memory was 49.2MB in the beginning and 46.8MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 50.19ms. Allocated memory is still 83.9MB. Free memory was 46.8MB in the beginning and 44.0MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1223.20ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 44.0MB in the beginning and 64.6MB in the end (delta: -20.6MB). Peak memory consumption was 14.6MB. Max. memory is 16.1GB. * TraceAbstraction took 17445.56ms. Allocated memory was 100.7MB in the beginning and 1.7GB in the end (delta: 1.6GB). Free memory was 64.5MB in the beginning and 870.3MB in the end (delta: -805.8MB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. * Witness Printer took 58.36ms. Allocated memory is still 1.7GB. Free memory was 870.3MB in the beginning and 867.1MB 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: 7.9s, 159 PlacesBefore, 47 PlacesAfterwards, 148 TransitionsBefore, 35 TransitionsAfterwards, 3482 CoEnabledTransitionPairs, 7 FixpointIterations, 62 TrivialSequentialCompositions, 52 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 121 TotalNumberOfCompositions, 12084 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3334, independent: 3000, independent conditional: 0, independent unconditional: 3000, dependent: 334, dependent conditional: 0, dependent unconditional: 334, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1734, independent: 1668, independent conditional: 0, independent unconditional: 1668, dependent: 66, dependent conditional: 0, dependent unconditional: 66, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3334, independent: 1332, independent conditional: 0, independent unconditional: 1332, dependent: 268, dependent conditional: 0, dependent unconditional: 268, unknown: 1734, unknown conditional: 0, unknown unconditional: 1734] , Statistics on independence cache: Total cache size (in pairs): 192, Positive cache size: 165, Positive conditional cache size: 0, Positive unconditional cache size: 165, Negative cache size: 27, Negative conditional cache size: 0, Negative unconditional cache size: 27, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 789]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 789]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 816]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 816]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 852]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 852]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 869]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 869]: 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 9 procedures, 192 locations, 20 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: 17.3s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 8.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 8.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 343 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 301 mSDsluCounter, 13 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 71 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 470 IncrementalHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 71 mSolverCounterUnsat, 13 mSDtfsCounter, 470 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=188occurred in iteration=4, InterpolantAutomatonStates: 22, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 62 NumberOfCodeBlocks, 62 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 57 ConstructedInterpolants, 0 QuantifiedInterpolants, 171 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 08:49:48,016 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE