./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/test-easy1.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/test-easy1.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 fc27937a34d27b10c960489127716dfcbd25a3140e1829dbc6f42b419387a4e7 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 08:37:52,708 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 08:37:52,711 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 08:37:52,752 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 08:37:52,755 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 08:37:52,757 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 08:37:52,759 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 08:37:52,762 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 08:37:52,763 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 08:37:52,767 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 08:37:52,768 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 08:37:52,771 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 08:37:52,771 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 08:37:52,773 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 08:37:52,774 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 08:37:52,778 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 08:37:52,779 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 08:37:52,781 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 08:37:52,782 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 08:37:52,786 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 08:37:52,788 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 08:37:52,789 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 08:37:52,790 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 08:37:52,791 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 08:37:52,797 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 08:37:52,798 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 08:37:52,798 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 08:37:52,799 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 08:37:52,800 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 08:37:52,801 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 08:37:52,801 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 08:37:52,805 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 08:37:52,806 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 08:37:52,807 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 08:37:52,807 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 08:37:52,808 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 08:37:52,808 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 08:37:52,808 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 08:37:52,809 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 08:37:52,809 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 08:37:52,810 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 08:37:52,811 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 08:37:52,842 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 08:37:52,843 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 08:37:52,844 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 08:37:52,844 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 08:37:52,845 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 08:37:52,845 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 08:37:52,845 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 08:37:52,846 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 08:37:52,846 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 08:37:52,846 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 08:37:52,847 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 08:37:52,847 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 08:37:52,847 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 08:37:52,847 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 08:37:52,848 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 08:37:52,848 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 08:37:52,848 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 08:37:52,848 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 08:37:52,848 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 08:37:52,849 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 08:37:52,849 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 08:37:52,849 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 08:37:52,849 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 08:37:52,849 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 08:37:52,850 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 08:37:52,850 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 08:37:52,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:37:52,850 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 08:37:52,850 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 08:37:52,851 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 08:37:52,851 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 08:37:52,851 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 08:37:52,851 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 08:37:52,851 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 08:37:52,852 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 08:37:52,852 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 08:37:52,852 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 08:37:52,852 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fc27937a34d27b10c960489127716dfcbd25a3140e1829dbc6f42b419387a4e7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 08:37:53,128 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 08:37:53,143 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 08:37:53,145 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 08:37:53,146 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 08:37:53,148 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 08:37:53,149 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy1.wvr.c [2023-09-01 08:37:54,268 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 08:37:54,508 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 08:37:54,509 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy1.wvr.c [2023-09-01 08:37:54,517 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4aa2cda15/3df9c534dbc94d1d80e9ec7e6655489b/FLAG09d636f75 [2023-09-01 08:37:54,531 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4aa2cda15/3df9c534dbc94d1d80e9ec7e6655489b [2023-09-01 08:37:54,532 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 08:37:54,533 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 08:37:54,541 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 08:37:54,541 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 08:37:54,544 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 08:37:54,544 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:37:54" (1/1) ... [2023-09-01 08:37:54,546 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@242dc25e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:37:54, skipping insertion in model container [2023-09-01 08:37:54,546 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:37:54" (1/1) ... [2023-09-01 08:37:54,551 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 08:37:54,566 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 08:37:54,712 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-easy1.wvr.c[1876,1889] [2023-09-01 08:37:54,713 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:37:54,723 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 08:37:54,744 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-easy1.wvr.c[1876,1889] [2023-09-01 08:37:54,751 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:37:54,766 INFO L208 MainTranslator]: Completed translation [2023-09-01 08:37:54,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:37:54 WrapperNode [2023-09-01 08:37:54,766 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 08:37:54,768 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 08:37:54,768 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 08:37:54,768 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 08:37:54,773 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:37:54" (1/1) ... [2023-09-01 08:37:54,780 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:37:54" (1/1) ... [2023-09-01 08:37:54,802 INFO L138 Inliner]: procedures = 21, calls = 20, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 58 [2023-09-01 08:37:54,802 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 08:37:54,804 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 08:37:54,804 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 08:37:54,805 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 08:37:54,812 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:37:54" (1/1) ... [2023-09-01 08:37:54,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:37:54" (1/1) ... [2023-09-01 08:37:54,822 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:37:54" (1/1) ... [2023-09-01 08:37:54,823 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:37:54" (1/1) ... [2023-09-01 08:37:54,832 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:37:54" (1/1) ... [2023-09-01 08:37:54,836 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:37:54" (1/1) ... [2023-09-01 08:37:54,838 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:37:54" (1/1) ... [2023-09-01 08:37:54,841 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:37:54" (1/1) ... [2023-09-01 08:37:54,843 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 08:37:54,845 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 08:37:54,846 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 08:37:54,846 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 08:37:54,846 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:37:54" (1/1) ... [2023-09-01 08:37:54,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:37:54,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:37:54,872 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 08:37:54,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 08:37:54,910 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 08:37:54,910 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 08:37:54,910 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 08:37:54,910 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 08:37:54,910 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 08:37:54,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 08:37:54,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 08:37:54,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 08:37:54,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 08:37:54,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 08:37:54,912 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 08:37:54,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 08:37:54,913 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 08:37:54,990 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 08:37:54,991 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 08:37:55,195 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 08:37:55,200 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 08:37:55,201 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-09-01 08:37:55,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:37:55 BoogieIcfgContainer [2023-09-01 08:37:55,202 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 08:37:55,204 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 08:37:55,204 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 08:37:55,206 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 08:37:55,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 08:37:54" (1/3) ... [2023-09-01 08:37:55,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@329b96a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:37:55, skipping insertion in model container [2023-09-01 08:37:55,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:37:54" (2/3) ... [2023-09-01 08:37:55,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@329b96a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:37:55, skipping insertion in model container [2023-09-01 08:37:55,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:37:55" (3/3) ... [2023-09-01 08:37:55,208 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy1.wvr.c [2023-09-01 08:37:55,215 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 08:37:55,222 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 08:37:55,222 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-09-01 08:37:55,223 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 08:37:55,311 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 08:37:55,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 85 transitions, 186 flow [2023-09-01 08:37:55,412 INFO L130 PetriNetUnfolder]: 6/83 cut-off events. [2023-09-01 08:37:55,413 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 08:37:55,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 83 events. 6/83 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 67 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2023-09-01 08:37:55,419 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 85 transitions, 186 flow [2023-09-01 08:37:55,424 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 67 transitions, 143 flow [2023-09-01 08:37:55,427 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 08:37:55,445 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 67 transitions, 143 flow [2023-09-01 08:37:55,451 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 67 transitions, 143 flow [2023-09-01 08:37:55,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 69 places, 67 transitions, 143 flow [2023-09-01 08:37:55,476 INFO L130 PetriNetUnfolder]: 5/67 cut-off events. [2023-09-01 08:37:55,479 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 08:37:55,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 67 events. 5/67 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 66 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2023-09-01 08:37:55,481 INFO L119 LiptonReduction]: Number of co-enabled transitions 648 [2023-09-01 08:37:57,515 INFO L134 LiptonReduction]: Checked pairs total: 635 [2023-09-01 08:37:57,515 INFO L136 LiptonReduction]: Total number of compositions: 65 [2023-09-01 08:37:57,527 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 08:37:57,533 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;@e65657f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 08:37:57,533 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-09-01 08:37:57,536 INFO L130 PetriNetUnfolder]: 1/4 cut-off events. [2023-09-01 08:37:57,536 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 08:37:57,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:37:57,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 08:37:57,537 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-09-01 08:37:57,541 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:37:57,541 INFO L85 PathProgramCache]: Analyzing trace with hash 311684, now seen corresponding path program 1 times [2023-09-01 08:37:57,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:37:57,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691722962] [2023-09-01 08:37:57,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:37:57,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:37:57,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:37:57,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:37:57,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:37:57,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691722962] [2023-09-01 08:37:57,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691722962] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:37:57,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:37:57,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 08:37:57,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298836911] [2023-09-01 08:37:57,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:37:57,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:37:57,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:37:57,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:37:57,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:37:57,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 150 [2023-09-01 08:37:57,866 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 15 transitions, 39 flow. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:57,866 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:37:57,866 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 150 [2023-09-01 08:37:57,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:37:57,904 INFO L130 PetriNetUnfolder]: 29/52 cut-off events. [2023-09-01 08:37:57,904 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-09-01 08:37:57,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117 conditions, 52 events. 29/52 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 82 event pairs, 15 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 80. Up to 52 conditions per place. [2023-09-01 08:37:57,906 INFO L137 encePairwiseOnDemand]: 146/150 looper letters, 10 selfloop transitions, 1 changer transitions 1/12 dead transitions. [2023-09-01 08:37:57,906 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 12 transitions, 57 flow [2023-09-01 08:37:57,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:37:57,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:37:57,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 231 transitions. [2023-09-01 08:37:57,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5133333333333333 [2023-09-01 08:37:57,921 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 231 transitions. [2023-09-01 08:37:57,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 231 transitions. [2023-09-01 08:37:57,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:37:57,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 231 transitions. [2023-09-01 08:37:57,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:57,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:57,935 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:57,936 INFO L175 Difference]: Start difference. First operand has 20 places, 15 transitions, 39 flow. Second operand 3 states and 231 transitions. [2023-09-01 08:37:57,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 12 transitions, 57 flow [2023-09-01 08:37:57,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 12 transitions, 52 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-09-01 08:37:57,940 INFO L231 Difference]: Finished difference. Result has 16 places, 11 transitions, 28 flow [2023-09-01 08:37:57,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=28, PETRI_PLACES=16, PETRI_TRANSITIONS=11} [2023-09-01 08:37:57,944 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, -4 predicate places. [2023-09-01 08:37:57,945 INFO L495 AbstractCegarLoop]: Abstraction has has 16 places, 11 transitions, 28 flow [2023-09-01 08:37:57,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:57,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:37:57,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 08:37:57,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 08:37:57,946 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-09-01 08:37:57,946 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:37:57,946 INFO L85 PathProgramCache]: Analyzing trace with hash 299549720, now seen corresponding path program 1 times [2023-09-01 08:37:57,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:37:57,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625206748] [2023-09-01 08:37:57,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:37:57,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:37:57,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:37:58,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:37:58,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:37:58,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625206748] [2023-09-01 08:37:58,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625206748] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:37:58,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:37:58,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 08:37:58,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338994716] [2023-09-01 08:37:58,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:37:58,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:37:58,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:37:58,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:37:58,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:37:58,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 150 [2023-09-01 08:37:58,053 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 16 places, 11 transitions, 28 flow. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:58,053 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:37:58,053 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 150 [2023-09-01 08:37:58,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:37:58,066 INFO L130 PetriNetUnfolder]: 13/24 cut-off events. [2023-09-01 08:37:58,067 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 08:37:58,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 24 events. 13/24 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 19 event pairs, 3 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 51. Up to 24 conditions per place. [2023-09-01 08:37:58,067 INFO L137 encePairwiseOnDemand]: 148/150 looper letters, 0 selfloop transitions, 0 changer transitions 10/10 dead transitions. [2023-09-01 08:37:58,067 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 16 places, 10 transitions, 46 flow [2023-09-01 08:37:58,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:37:58,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:37:58,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 227 transitions. [2023-09-01 08:37:58,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5044444444444445 [2023-09-01 08:37:58,070 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 227 transitions. [2023-09-01 08:37:58,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 227 transitions. [2023-09-01 08:37:58,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:37:58,070 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 227 transitions. [2023-09-01 08:37:58,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:58,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:58,073 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:58,073 INFO L175 Difference]: Start difference. First operand has 16 places, 11 transitions, 28 flow. Second operand 3 states and 227 transitions. [2023-09-01 08:37:58,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 16 places, 10 transitions, 46 flow [2023-09-01 08:37:58,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 10 transitions, 45 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:37:58,074 INFO L231 Difference]: Finished difference. Result has 15 places, 0 transitions, 0 flow [2023-09-01 08:37:58,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=25, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=15, PETRI_TRANSITIONS=0} [2023-09-01 08:37:58,075 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, -5 predicate places. [2023-09-01 08:37:58,075 INFO L495 AbstractCegarLoop]: Abstraction has has 15 places, 0 transitions, 0 flow [2023-09-01 08:37:58,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:58,078 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 10 remaining) [2023-09-01 08:37:58,078 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2023-09-01 08:37:58,078 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2023-09-01 08:37:58,079 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2023-09-01 08:37:58,079 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 10 remaining) [2023-09-01 08:37:58,079 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 10 remaining) [2023-09-01 08:37:58,079 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2023-09-01 08:37:58,080 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2023-09-01 08:37:58,080 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2023-09-01 08:37:58,080 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 10 remaining) [2023-09-01 08:37:58,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 08:37:58,080 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-09-01 08:37:58,085 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 08:37:58,085 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 08:37:58,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 08:37:58 BasicIcfg [2023-09-01 08:37:58,088 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 08:37:58,089 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 08:37:58,089 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 08:37:58,089 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 08:37:58,090 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:37:55" (3/4) ... [2023-09-01 08:37:58,091 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-09-01 08:37:58,096 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-09-01 08:37:58,096 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-09-01 08:37:58,101 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2023-09-01 08:37:58,101 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-09-01 08:37:58,102 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-09-01 08:37:58,102 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-09-01 08:37:58,130 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 08:37:58,133 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 08:37:58,134 INFO L158 Benchmark]: Toolchain (without parser) took 3600.21ms. Allocated memory was 79.7MB in the beginning and 100.7MB in the end (delta: 21.0MB). Free memory was 57.2MB in the beginning and 53.0MB in the end (delta: 4.1MB). Peak memory consumption was 27.0MB. Max. memory is 16.1GB. [2023-09-01 08:37:58,134 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 60.8MB. Free memory is still 38.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 08:37:58,134 INFO L158 Benchmark]: CACSL2BoogieTranslator took 225.78ms. Allocated memory is still 79.7MB. Free memory was 57.0MB in the beginning and 46.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-09-01 08:37:58,135 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.04ms. Allocated memory is still 79.7MB. Free memory was 46.3MB in the beginning and 44.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 08:37:58,135 INFO L158 Benchmark]: Boogie Preprocessor took 40.11ms. Allocated memory is still 79.7MB. Free memory was 44.7MB in the beginning and 43.5MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 08:37:58,137 INFO L158 Benchmark]: RCFGBuilder took 357.21ms. Allocated memory is still 79.7MB. Free memory was 43.5MB in the beginning and 54.4MB in the end (delta: -10.8MB). Peak memory consumption was 12.4MB. Max. memory is 16.1GB. [2023-09-01 08:37:58,138 INFO L158 Benchmark]: TraceAbstraction took 2884.61ms. Allocated memory was 79.7MB in the beginning and 100.7MB in the end (delta: 21.0MB). Free memory was 53.7MB in the beginning and 55.7MB in the end (delta: -2.0MB). Peak memory consumption was 18.8MB. Max. memory is 16.1GB. [2023-09-01 08:37:58,138 INFO L158 Benchmark]: Witness Printer took 44.38ms. Allocated memory is still 100.7MB. Free memory was 55.7MB in the beginning and 53.0MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 08:37:58,140 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 60.8MB. Free memory is still 38.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 225.78ms. Allocated memory is still 79.7MB. Free memory was 57.0MB in the beginning and 46.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.04ms. Allocated memory is still 79.7MB. Free memory was 46.3MB in the beginning and 44.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 40.11ms. Allocated memory is still 79.7MB. Free memory was 44.7MB in the beginning and 43.5MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 357.21ms. Allocated memory is still 79.7MB. Free memory was 43.5MB in the beginning and 54.4MB in the end (delta: -10.8MB). Peak memory consumption was 12.4MB. Max. memory is 16.1GB. * TraceAbstraction took 2884.61ms. Allocated memory was 79.7MB in the beginning and 100.7MB in the end (delta: 21.0MB). Free memory was 53.7MB in the beginning and 55.7MB in the end (delta: -2.0MB). Peak memory consumption was 18.8MB. Max. memory is 16.1GB. * Witness Printer took 44.38ms. Allocated memory is still 100.7MB. Free memory was 55.7MB in the beginning and 53.0MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.1s, 69 PlacesBefore, 20 PlacesAfterwards, 67 TransitionsBefore, 15 TransitionsAfterwards, 648 CoEnabledTransitionPairs, 6 FixpointIterations, 28 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 4 ConcurrentYvCompositions, 3 ChoiceCompositions, 65 TotalNumberOfCompositions, 635 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 635, independent: 635, independent conditional: 0, independent unconditional: 635, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 336, independent: 336, independent conditional: 0, independent unconditional: 336, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 635, independent: 299, independent conditional: 0, independent unconditional: 299, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 336, unknown conditional: 0, unknown unconditional: 336] , Statistics on independence cache: Total cache size (in pairs): 17, Positive cache size: 17, Positive conditional cache size: 0, Positive unconditional cache size: 17, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 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: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 50]: 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, 104 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: 2.7s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 49 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 23 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 45 IncrementalHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 1 mSDtfsCounter, 45 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=0, InterpolantAutomatonStates: 6, 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, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 18 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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! [2023-09-01 08:37:58,159 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