./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/test-semi1.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/test-semi1.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e1fb758430fdab5e598998cc874ea93afa2de5f622c2b42d836b77952562e01f --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 12:05:36,293 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 12:05:36,295 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 12:05:36,336 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 12:05:36,337 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 12:05:36,340 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 12:05:36,343 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 12:05:36,346 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 12:05:36,348 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 12:05:36,353 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 12:05:36,354 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 12:05:36,356 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 12:05:36,356 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 12:05:36,358 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 12:05:36,359 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 12:05:36,364 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 12:05:36,365 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 12:05:36,366 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 12:05:36,368 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 12:05:36,373 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 12:05:36,375 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 12:05:36,376 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 12:05:36,382 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 12:05:36,382 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 12:05:36,389 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 12:05:36,390 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 12:05:36,390 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 12:05:36,392 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 12:05:36,392 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 12:05:36,393 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 12:05:36,393 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 12:05:36,400 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 12:05:36,402 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 12:05:36,403 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 12:05:36,403 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 12:05:36,404 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 12:05:36,404 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 12:05:36,404 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 12:05:36,405 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 12:05:36,405 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 12:05:36,406 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 12:05:36,407 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 12:05:36,440 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 12:05:36,441 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 12:05:36,442 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 12:05:36,442 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 12:05:36,443 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 12:05:36,443 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 12:05:36,444 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 12:05:36,444 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 12:05:36,444 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 12:05:36,444 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 12:05:36,445 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 12:05:36,445 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 12:05:36,445 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 12:05:36,446 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 12:05:36,446 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 12:05:36,446 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 12:05:36,446 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 12:05:36,446 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 12:05:36,447 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 12:05:36,447 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 12:05:36,447 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 12:05:36,447 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 12:05:36,447 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 12:05:36,448 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 12:05:36,448 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 12:05:36,448 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 12:05:36,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 12:05:36,448 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 12:05:36,449 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 12:05:36,449 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 12:05:36,449 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 12:05:36,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 12:05:36,449 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 12:05:36,450 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 12:05:36,450 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 12:05:36,450 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 12:05:36,450 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 12:05:36,450 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e1fb758430fdab5e598998cc874ea93afa2de5f622c2b42d836b77952562e01f Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 12:05:36,786 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 12:05:36,808 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 12:05:36,811 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 12:05:36,812 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 12:05:36,812 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 12:05:36,814 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-semi1.wvr.c [2023-08-30 12:05:38,121 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 12:05:38,322 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 12:05:38,323 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-semi1.wvr.c [2023-08-30 12:05:38,331 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77f9dbf0b/a19926b3df4b4a7a9588f8341ed6ab4f/FLAGe8031921d [2023-08-30 12:05:38,351 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77f9dbf0b/a19926b3df4b4a7a9588f8341ed6ab4f [2023-08-30 12:05:38,354 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 12:05:38,355 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 12:05:38,358 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 12:05:38,358 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 12:05:38,361 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 12:05:38,361 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 12:05:38" (1/1) ... [2023-08-30 12:05:38,363 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@650ac76a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:05:38, skipping insertion in model container [2023-08-30 12:05:38,363 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 12:05:38" (1/1) ... [2023-08-30 12:05:38,369 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 12:05:38,385 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 12:05:38,551 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-semi1.wvr.c[1979,1992] [2023-08-30 12:05:38,553 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 12:05:38,563 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 12:05:38,584 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-semi1.wvr.c[1979,1992] [2023-08-30 12:05:38,588 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 12:05:38,597 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 12:05:38,598 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 12:05:38,603 INFO L208 MainTranslator]: Completed translation [2023-08-30 12:05:38,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:05:38 WrapperNode [2023-08-30 12:05:38,604 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 12:05:38,605 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 12:05:38,605 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 12:05:38,605 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 12:05:38,611 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:05:38" (1/1) ... [2023-08-30 12:05:38,618 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:05:38" (1/1) ... [2023-08-30 12:05:38,642 INFO L138 Inliner]: procedures = 21, calls = 26, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 75 [2023-08-30 12:05:38,643 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 12:05:38,644 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 12:05:38,644 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 12:05:38,645 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 12:05:38,652 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:05:38" (1/1) ... [2023-08-30 12:05:38,653 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:05:38" (1/1) ... [2023-08-30 12:05:38,662 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:05:38" (1/1) ... [2023-08-30 12:05:38,664 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:05:38" (1/1) ... [2023-08-30 12:05:38,672 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:05:38" (1/1) ... [2023-08-30 12:05:38,676 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:05:38" (1/1) ... [2023-08-30 12:05:38,678 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:05:38" (1/1) ... [2023-08-30 12:05:38,683 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:05:38" (1/1) ... [2023-08-30 12:05:38,685 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 12:05:38,686 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 12:05:38,687 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 12:05:38,687 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 12:05:38,688 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:05:38" (1/1) ... [2023-08-30 12:05:38,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 12:05:38,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:05:38,719 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 12:05:38,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 12:05:38,755 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 12:05:38,755 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 12:05:38,756 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 12:05:38,756 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 12:05:38,756 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 12:05:38,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 12:05:38,757 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 12:05:38,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 12:05:38,757 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 12:05:38,757 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 12:05:38,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 12:05:38,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 12:05:38,758 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 12:05:38,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 12:05:38,759 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 12:05:38,845 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 12:05:38,847 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 12:05:39,015 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 12:05:39,126 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 12:05:39,133 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 12:05:39,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 12:05:39 BoogieIcfgContainer [2023-08-30 12:05:39,137 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 12:05:39,138 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 12:05:39,139 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 12:05:39,142 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 12:05:39,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 12:05:38" (1/3) ... [2023-08-30 12:05:39,144 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@561778ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 12:05:39, skipping insertion in model container [2023-08-30 12:05:39,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:05:38" (2/3) ... [2023-08-30 12:05:39,144 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@561778ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 12:05:39, skipping insertion in model container [2023-08-30 12:05:39,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 12:05:39" (3/3) ... [2023-08-30 12:05:39,145 INFO L112 eAbstractionObserver]: Analyzing ICFG test-semi1.wvr.c [2023-08-30 12:05:39,151 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 12:05:39,158 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 12:05:39,158 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-08-30 12:05:39,158 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 12:05:39,208 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 12:05:39,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 77 transitions, 170 flow [2023-08-30 12:05:39,296 INFO L130 PetriNetUnfolder]: 3/75 cut-off events. [2023-08-30 12:05:39,296 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 12:05:39,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 75 events. 3/75 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 27 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 49. Up to 2 conditions per place. [2023-08-30 12:05:39,300 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 77 transitions, 170 flow [2023-08-30 12:05:39,303 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 59 transitions, 127 flow [2023-08-30 12:05:39,306 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 12:05:39,314 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 64 places, 59 transitions, 127 flow [2023-08-30 12:05:39,316 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 64 places, 59 transitions, 127 flow [2023-08-30 12:05:39,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 59 transitions, 127 flow [2023-08-30 12:05:39,331 INFO L130 PetriNetUnfolder]: 2/59 cut-off events. [2023-08-30 12:05:39,331 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 12:05:39,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 59 events. 2/59 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 25 event pairs, 0 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 49. Up to 2 conditions per place. [2023-08-30 12:05:39,332 INFO L119 LiptonReduction]: Number of co-enabled transitions 200 [2023-08-30 12:05:41,380 INFO L134 LiptonReduction]: Checked pairs total: 232 [2023-08-30 12:05:41,380 INFO L136 LiptonReduction]: Total number of compositions: 51 [2023-08-30 12:05:41,393 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 12:05:41,398 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;@3d5d73fd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 12:05:41,398 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-08-30 12:05:41,401 INFO L130 PetriNetUnfolder]: 0/2 cut-off events. [2023-08-30 12:05:41,401 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 12:05:41,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:05:41,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 12:05:41,402 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-08-30 12:05:41,406 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:05:41,407 INFO L85 PathProgramCache]: Analyzing trace with hash 293151, now seen corresponding path program 1 times [2023-08-30 12:05:41,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:05:41,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409209294] [2023-08-30 12:05:41,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:05:41,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:05:41,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:05:41,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:05:41,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:05:41,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409209294] [2023-08-30 12:05:41,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409209294] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:05:41,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:05:41,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 12:05:41,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041810518] [2023-08-30 12:05:41,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:05:41,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:05:41,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:05:41,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:05:41,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:05:41,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 128 [2023-08-30 12:05:41,788 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 13 transitions, 35 flow. Second operand has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:41,789 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:05:41,789 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 128 [2023-08-30 12:05:41,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:05:41,841 INFO L130 PetriNetUnfolder]: 24/55 cut-off events. [2023-08-30 12:05:41,842 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 12:05:41,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 55 events. 24/55 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 119 event pairs, 24 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 92. Up to 55 conditions per place. [2023-08-30 12:05:41,846 INFO L137 encePairwiseOnDemand]: 125/128 looper letters, 10 selfloop transitions, 1 changer transitions 0/11 dead transitions. [2023-08-30 12:05:41,846 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 11 transitions, 53 flow [2023-08-30 12:05:41,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:05:41,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:05:41,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 196 transitions. [2023-08-30 12:05:41,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5104166666666666 [2023-08-30 12:05:41,861 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 196 transitions. [2023-08-30 12:05:41,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 196 transitions. [2023-08-30 12:05:41,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:05:41,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 196 transitions. [2023-08-30 12:05:41,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:41,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:41,879 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:41,881 INFO L175 Difference]: Start difference. First operand has 20 places, 13 transitions, 35 flow. Second operand 3 states and 196 transitions. [2023-08-30 12:05:41,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 11 transitions, 53 flow [2023-08-30 12:05:41,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 11 transitions, 48 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 12:05:41,884 INFO L231 Difference]: Finished difference. Result has 17 places, 11 transitions, 28 flow [2023-08-30 12:05:41,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=28, PETRI_PLACES=17, PETRI_TRANSITIONS=11} [2023-08-30 12:05:41,892 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, -3 predicate places. [2023-08-30 12:05:41,893 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 11 transitions, 28 flow [2023-08-30 12:05:41,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:41,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:05:41,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 12:05:41,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 12:05:41,898 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-08-30 12:05:41,899 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:05:41,900 INFO L85 PathProgramCache]: Analyzing trace with hash 293152, now seen corresponding path program 1 times [2023-08-30 12:05:41,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:05:41,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101371012] [2023-08-30 12:05:41,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:05:41,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:05:41,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:05:41,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:05:41,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:05:41,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101371012] [2023-08-30 12:05:41,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101371012] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:05:41,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:05:41,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 12:05:41,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445599688] [2023-08-30 12:05:41,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:05:41,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:05:41,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:05:41,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:05:41,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:05:42,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 128 [2023-08-30 12:05:42,002 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 11 transitions, 28 flow. Second operand has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:42,002 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:05:42,002 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 128 [2023-08-30 12:05:42,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:05:42,032 INFO L130 PetriNetUnfolder]: 12/33 cut-off events. [2023-08-30 12:05:42,033 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 12:05:42,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 33 events. 12/33 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 61 event pairs, 3 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 69. Up to 26 conditions per place. [2023-08-30 12:05:42,033 INFO L137 encePairwiseOnDemand]: 124/128 looper letters, 10 selfloop transitions, 2 changer transitions 2/14 dead transitions. [2023-08-30 12:05:42,033 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 14 transitions, 64 flow [2023-08-30 12:05:42,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:05:42,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:05:42,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 199 transitions. [2023-08-30 12:05:42,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5182291666666666 [2023-08-30 12:05:42,039 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 199 transitions. [2023-08-30 12:05:42,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 199 transitions. [2023-08-30 12:05:42,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:05:42,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 199 transitions. [2023-08-30 12:05:42,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:42,044 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:42,045 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:42,045 INFO L175 Difference]: Start difference. First operand has 17 places, 11 transitions, 28 flow. Second operand 3 states and 199 transitions. [2023-08-30 12:05:42,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 14 transitions, 64 flow [2023-08-30 12:05:42,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 14 transitions, 63 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:05:42,046 INFO L231 Difference]: Finished difference. Result has 18 places, 9 transitions, 31 flow [2023-08-30 12:05:42,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=25, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=31, PETRI_PLACES=18, PETRI_TRANSITIONS=9} [2023-08-30 12:05:42,047 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, -2 predicate places. [2023-08-30 12:05:42,047 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 9 transitions, 31 flow [2023-08-30 12:05:42,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:42,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:05:42,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 12:05:42,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 12:05:42,048 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-08-30 12:05:42,048 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:05:42,048 INFO L85 PathProgramCache]: Analyzing trace with hash 145179027, now seen corresponding path program 1 times [2023-08-30 12:05:42,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:05:42,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821341140] [2023-08-30 12:05:42,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:05:42,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:05:42,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:05:42,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:05:42,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:05:42,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821341140] [2023-08-30 12:05:42,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821341140] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:05:42,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:05:42,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:05:42,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131786604] [2023-08-30 12:05:42,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:05:42,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:05:42,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:05:42,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:05:42,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:05:42,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 128 [2023-08-30 12:05:42,147 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 9 transitions, 31 flow. Second operand has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:42,147 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:05:42,147 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 128 [2023-08-30 12:05:42,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:05:42,171 INFO L130 PetriNetUnfolder]: 3/14 cut-off events. [2023-08-30 12:05:42,172 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 12:05:42,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 14 events. 3/14 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 10 event pairs, 3 based on Foata normal form. 4/18 useless extension candidates. Maximal degree in co-relation 39. Up to 14 conditions per place. [2023-08-30 12:05:42,172 INFO L137 encePairwiseOnDemand]: 126/128 looper letters, 0 selfloop transitions, 0 changer transitions 8/8 dead transitions. [2023-08-30 12:05:42,172 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 8 transitions, 43 flow [2023-08-30 12:05:42,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:05:42,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:05:42,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 192 transitions. [2023-08-30 12:05:42,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-08-30 12:05:42,175 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 192 transitions. [2023-08-30 12:05:42,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 192 transitions. [2023-08-30 12:05:42,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:05:42,175 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 192 transitions. [2023-08-30 12:05:42,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:42,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:42,179 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:42,179 INFO L175 Difference]: Start difference. First operand has 18 places, 9 transitions, 31 flow. Second operand 3 states and 192 transitions. [2023-08-30 12:05:42,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 8 transitions, 43 flow [2023-08-30 12:05:42,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 8 transitions, 37 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 12:05:42,180 INFO L231 Difference]: Finished difference. Result has 15 places, 0 transitions, 0 flow [2023-08-30 12:05:42,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=21, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=15, PETRI_TRANSITIONS=0} [2023-08-30 12:05:42,182 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, -5 predicate places. [2023-08-30 12:05:42,185 INFO L495 AbstractCegarLoop]: Abstraction has has 15 places, 0 transitions, 0 flow [2023-08-30 12:05:42,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:05:42,188 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 10 remaining) [2023-08-30 12:05:42,189 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2023-08-30 12:05:42,189 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2023-08-30 12:05:42,189 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2023-08-30 12:05:42,189 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 10 remaining) [2023-08-30 12:05:42,189 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 10 remaining) [2023-08-30 12:05:42,190 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2023-08-30 12:05:42,191 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2023-08-30 12:05:42,191 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2023-08-30 12:05:42,191 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 10 remaining) [2023-08-30 12:05:42,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 12:05:42,192 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-30 12:05:42,198 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 12:05:42,199 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 12:05:42,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 12:05:42 BasicIcfg [2023-08-30 12:05:42,204 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 12:05:42,205 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 12:05:42,205 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 12:05:42,205 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 12:05:42,205 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 12:05:39" (3/4) ... [2023-08-30 12:05:42,207 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 12:05:42,211 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-30 12:05:42,211 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-30 12:05:42,220 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2023-08-30 12:05:42,223 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 12:05:42,223 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 12:05:42,223 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 12:05:42,255 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 12:05:42,255 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 12:05:42,256 INFO L158 Benchmark]: Toolchain (without parser) took 3900.95ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 69.9MB in the beginning and 53.1MB in the end (delta: 16.8MB). Peak memory consumption was 34.8MB. Max. memory is 16.1GB. [2023-08-30 12:05:42,256 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 65.0MB. Free memory is still 42.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 12:05:42,257 INFO L158 Benchmark]: CACSL2BoogieTranslator took 246.43ms. Allocated memory is still 90.2MB. Free memory was 69.5MB in the beginning and 59.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-08-30 12:05:42,257 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.41ms. Allocated memory is still 90.2MB. Free memory was 59.0MB in the beginning and 57.5MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 12:05:42,257 INFO L158 Benchmark]: Boogie Preprocessor took 41.53ms. Allocated memory is still 90.2MB. Free memory was 57.5MB in the beginning and 56.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 12:05:42,257 INFO L158 Benchmark]: RCFGBuilder took 450.56ms. Allocated memory is still 90.2MB. Free memory was 56.1MB in the beginning and 63.8MB in the end (delta: -7.7MB). Peak memory consumption was 12.2MB. Max. memory is 16.1GB. [2023-08-30 12:05:42,258 INFO L158 Benchmark]: TraceAbstraction took 3065.43ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 62.9MB in the beginning and 56.5MB in the end (delta: 6.5MB). Peak memory consumption was 22.5MB. Max. memory is 16.1GB. [2023-08-30 12:05:42,258 INFO L158 Benchmark]: Witness Printer took 50.89ms. Allocated memory is still 109.1MB. Free memory was 56.0MB in the beginning and 53.1MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 12:05:42,260 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 65.0MB. Free memory is still 42.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 246.43ms. Allocated memory is still 90.2MB. Free memory was 69.5MB in the beginning and 59.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.41ms. Allocated memory is still 90.2MB. Free memory was 59.0MB in the beginning and 57.5MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 41.53ms. Allocated memory is still 90.2MB. Free memory was 57.5MB in the beginning and 56.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 450.56ms. Allocated memory is still 90.2MB. Free memory was 56.1MB in the beginning and 63.8MB in the end (delta: -7.7MB). Peak memory consumption was 12.2MB. Max. memory is 16.1GB. * TraceAbstraction took 3065.43ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 62.9MB in the beginning and 56.5MB in the end (delta: 6.5MB). Peak memory consumption was 22.5MB. Max. memory is 16.1GB. * Witness Printer took 50.89ms. Allocated memory is still 109.1MB. Free memory was 56.0MB in the beginning and 53.1MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.1s, 64 PlacesBefore, 20 PlacesAfterwards, 59 TransitionsBefore, 13 TransitionsAfterwards, 200 CoEnabledTransitionPairs, 6 FixpointIterations, 34 TrivialSequentialCompositions, 11 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 0 ConcurrentYvCompositions, 2 ChoiceCompositions, 51 TotalNumberOfCompositions, 232 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 188, independent: 180, independent conditional: 0, independent unconditional: 180, dependent: 8, dependent conditional: 0, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 93, independent: 89, independent conditional: 0, independent unconditional: 89, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 188, independent: 91, independent conditional: 0, independent unconditional: 91, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 93, unknown conditional: 0, unknown unconditional: 93] , Statistics on independence cache: Total cache size (in pairs): 13, Positive cache size: 12, Positive conditional cache size: 0, Positive unconditional cache size: 12, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 42]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 42]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 51]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 51]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 89 locations, 10 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: 3.0s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 49 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 25 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 59 IncrementalHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 2 mSDtfsCounter, 59 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=0, InterpolantAutomatonStates: 9, 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, 0.3s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 23 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 12:05:42,279 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