./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-min-le-max.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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/popl20-more-min-le-max.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0d8799100fd609ab67add98408724f155026fd97a78e0a4112bb89c435f95463 --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 20:55:08,700 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 20:55:08,702 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 20:55:08,744 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 20:55:08,746 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 20:55:08,749 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 20:55:08,751 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 20:55:08,754 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 20:55:08,756 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 20:55:08,760 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 20:55:08,761 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 20:55:08,764 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 20:55:08,764 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 20:55:08,766 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 20:55:08,767 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 20:55:08,773 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 20:55:08,774 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 20:55:08,775 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 20:55:08,777 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 20:55:08,782 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 20:55:08,783 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 20:55:08,784 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 20:55:08,785 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 20:55:08,786 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 20:55:08,792 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 20:55:08,792 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 20:55:08,793 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 20:55:08,794 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 20:55:08,795 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 20:55:08,795 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 20:55:08,796 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 20:55:08,801 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 20:55:08,803 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 20:55:08,803 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 20:55:08,804 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 20:55:08,804 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 20:55:08,805 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 20:55:08,805 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 20:55:08,805 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 20:55:08,806 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 20:55:08,807 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 20:55:08,808 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 20:55:08,840 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 20:55:08,841 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 20:55:08,842 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 20:55:08,842 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 20:55:08,843 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 20:55:08,843 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 20:55:08,844 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 20:55:08,844 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 20:55:08,844 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 20:55:08,844 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 20:55:08,845 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 20:55:08,845 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 20:55:08,846 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 20:55:08,846 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 20:55:08,846 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 20:55:08,846 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 20:55:08,846 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 20:55:08,847 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 20:55:08,847 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 20:55:08,847 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 20:55:08,847 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 20:55:08,848 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 20:55:08,848 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 20:55:08,848 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 20:55:08,848 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 20:55:08,849 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 20:55:08,849 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 20:55:08,849 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 20:55:08,849 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 20:55:08,849 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 20:55:08,850 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 20:55:08,850 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 20:55:08,850 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 20:55:08,850 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 20:55:08,851 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 20:55:08,851 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d8799100fd609ab67add98408724f155026fd97a78e0a4112bb89c435f95463 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 20:55:09,159 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 20:55:09,175 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 20:55:09,177 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 20:55:09,178 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 20:55:09,178 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 20:55:09,179 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-min-le-max.wvr.c [2023-08-30 20:55:10,283 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 20:55:10,474 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 20:55:10,474 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-min-le-max.wvr.c [2023-08-30 20:55:10,479 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a26ee3e3b/bd5634bc838545c69af1cf380784490c/FLAGa2f969542 [2023-08-30 20:55:10,492 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a26ee3e3b/bd5634bc838545c69af1cf380784490c [2023-08-30 20:55:10,493 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 20:55:10,494 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 20:55:10,495 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 20:55:10,495 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 20:55:10,499 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 20:55:10,500 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 08:55:10" (1/1) ... [2023-08-30 20:55:10,501 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@210f6df8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:55:10, skipping insertion in model container [2023-08-30 20:55:10,501 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 08:55:10" (1/1) ... [2023-08-30 20:55:10,506 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 20:55:10,527 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 20:55:10,690 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/popl20-more-min-le-max.wvr.c[2486,2499] [2023-08-30 20:55:10,706 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 20:55:10,715 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 20:55:10,749 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/popl20-more-min-le-max.wvr.c[2486,2499] [2023-08-30 20:55:10,756 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 20:55:10,764 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 20:55:10,764 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 20:55:10,770 INFO L208 MainTranslator]: Completed translation [2023-08-30 20:55:10,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:55:10 WrapperNode [2023-08-30 20:55:10,771 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 20:55:10,772 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 20:55:10,773 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 20:55:10,773 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 20:55:10,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:55:10" (1/1) ... [2023-08-30 20:55:10,793 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:55:10" (1/1) ... [2023-08-30 20:55:10,821 INFO L138 Inliner]: procedures = 24, calls = 43, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 106 [2023-08-30 20:55:10,821 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 20:55:10,823 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 20:55:10,823 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 20:55:10,824 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 20:55:10,831 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:55:10" (1/1) ... [2023-08-30 20:55:10,831 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:55:10" (1/1) ... [2023-08-30 20:55:10,843 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:55:10" (1/1) ... [2023-08-30 20:55:10,843 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:55:10" (1/1) ... [2023-08-30 20:55:10,852 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:55:10" (1/1) ... [2023-08-30 20:55:10,862 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:55:10" (1/1) ... [2023-08-30 20:55:10,865 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:55:10" (1/1) ... [2023-08-30 20:55:10,870 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:55:10" (1/1) ... [2023-08-30 20:55:10,872 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 20:55:10,874 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 20:55:10,875 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 20:55:10,875 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 20:55:10,876 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:55:10" (1/1) ... [2023-08-30 20:55:10,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 20:55:10,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 20:55:10,914 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 20:55:10,936 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 20:55:10,952 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 20:55:10,953 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 20:55:10,953 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 20:55:10,953 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 20:55:10,953 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 20:55:10,953 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 20:55:10,953 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 20:55:10,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 20:55:10,954 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 20:55:10,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 20:55:10,954 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 20:55:10,954 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 20:55:10,954 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 20:55:10,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 20:55:10,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 20:55:10,955 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 20:55:10,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 20:55:10,956 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 20:55:11,075 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 20:55:11,077 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 20:55:11,342 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 20:55:11,407 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 20:55:11,408 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-30 20:55:11,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 08:55:11 BoogieIcfgContainer [2023-08-30 20:55:11,410 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 20:55:11,412 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 20:55:11,412 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 20:55:11,415 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 20:55:11,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 08:55:10" (1/3) ... [2023-08-30 20:55:11,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bec0bcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 08:55:11, skipping insertion in model container [2023-08-30 20:55:11,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:55:10" (2/3) ... [2023-08-30 20:55:11,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bec0bcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 08:55:11, skipping insertion in model container [2023-08-30 20:55:11,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 08:55:11" (3/3) ... [2023-08-30 20:55:11,417 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-min-le-max.wvr.c [2023-08-30 20:55:11,423 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 20:55:11,429 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 20:55:11,429 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-30 20:55:11,429 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 20:55:11,497 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 20:55:11,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 140 places, 140 transitions, 304 flow [2023-08-30 20:55:11,629 INFO L130 PetriNetUnfolder]: 10/137 cut-off events. [2023-08-30 20:55:11,629 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 20:55:11,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150 conditions, 137 events. 10/137 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 77 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 108. Up to 2 conditions per place. [2023-08-30 20:55:11,634 INFO L82 GeneralOperation]: Start removeDead. Operand has 140 places, 140 transitions, 304 flow [2023-08-30 20:55:11,641 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 127 places, 127 transitions, 272 flow [2023-08-30 20:55:11,645 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 20:55:11,657 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 127 places, 127 transitions, 272 flow [2023-08-30 20:55:11,663 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 127 places, 127 transitions, 272 flow [2023-08-30 20:55:11,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 127 transitions, 272 flow [2023-08-30 20:55:11,714 INFO L130 PetriNetUnfolder]: 10/127 cut-off events. [2023-08-30 20:55:11,718 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 20:55:11,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 127 events. 10/127 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 76 event pairs, 0 based on Foata normal form. 0/117 useless extension candidates. Maximal degree in co-relation 108. Up to 2 conditions per place. [2023-08-30 20:55:11,721 INFO L119 LiptonReduction]: Number of co-enabled transitions 914 [2023-08-30 20:55:16,104 INFO L134 LiptonReduction]: Checked pairs total: 1238 [2023-08-30 20:55:16,104 INFO L136 LiptonReduction]: Total number of compositions: 121 [2023-08-30 20:55:16,115 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 20:55:16,121 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;@5b40f15c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 20:55:16,121 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-30 20:55:16,126 INFO L130 PetriNetUnfolder]: 3/21 cut-off events. [2023-08-30 20:55:16,126 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 20:55:16,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:55:16,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 20:55:16,127 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 20:55:16,131 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:55:16,131 INFO L85 PathProgramCache]: Analyzing trace with hash -995930098, now seen corresponding path program 1 times [2023-08-30 20:55:16,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:55:16,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808283437] [2023-08-30 20:55:16,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:55:16,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:55:16,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:55:16,648 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 20:55:16,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:55:16,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808283437] [2023-08-30 20:55:16,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808283437] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 20:55:16,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 20:55:16,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 20:55:16,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721881379] [2023-08-30 20:55:16,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 20:55:16,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 20:55:16,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 20:55:16,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 20:55:16,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 20:55:16,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 261 [2023-08-30 20:55:16,722 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 62 flow. Second operand has 4 states, 4 states have (on average 123.5) internal successors, (494), 4 states have internal predecessors, (494), 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 20:55:16,722 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 20:55:16,722 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 261 [2023-08-30 20:55:16,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 20:55:16,827 INFO L130 PetriNetUnfolder]: 202/304 cut-off events. [2023-08-30 20:55:16,828 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2023-08-30 20:55:16,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 655 conditions, 304 events. 202/304 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 921 event pairs, 92 based on Foata normal form. 0/230 useless extension candidates. Maximal degree in co-relation 533. Up to 231 conditions per place. [2023-08-30 20:55:16,831 INFO L137 encePairwiseOnDemand]: 257/261 looper letters, 27 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2023-08-30 20:55:16,831 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 31 transitions, 146 flow [2023-08-30 20:55:16,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 20:55:16,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 20:55:16,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 507 transitions. [2023-08-30 20:55:16,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48563218390804597 [2023-08-30 20:55:16,846 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 507 transitions. [2023-08-30 20:55:16,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 507 transitions. [2023-08-30 20:55:16,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 20:55:16,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 507 transitions. [2023-08-30 20:55:16,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 126.75) internal successors, (507), 4 states have internal predecessors, (507), 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 20:55:16,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 261.0) internal successors, (1305), 5 states have internal predecessors, (1305), 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 20:55:16,860 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 261.0) internal successors, (1305), 5 states have internal predecessors, (1305), 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 20:55:16,862 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 62 flow. Second operand 4 states and 507 transitions. [2023-08-30 20:55:16,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 31 transitions, 146 flow [2023-08-30 20:55:16,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 31 transitions, 130 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-30 20:55:16,866 INFO L231 Difference]: Finished difference. Result has 27 places, 23 transitions, 64 flow [2023-08-30 20:55:16,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=261, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=64, PETRI_PLACES=27, PETRI_TRANSITIONS=23} [2023-08-30 20:55:16,871 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -2 predicate places. [2023-08-30 20:55:16,872 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 23 transitions, 64 flow [2023-08-30 20:55:16,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 123.5) internal successors, (494), 4 states have internal predecessors, (494), 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 20:55:16,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:55:16,873 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 20:55:16,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 20:55:16,873 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 20:55:16,874 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:55:16,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1320582456, now seen corresponding path program 1 times [2023-08-30 20:55:16,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:55:16,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599281710] [2023-08-30 20:55:16,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:55:16,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:55:16,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:55:17,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 20:55:17,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:55:17,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599281710] [2023-08-30 20:55:17,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599281710] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 20:55:17,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 20:55:17,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 20:55:17,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25299181] [2023-08-30 20:55:17,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 20:55:17,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 20:55:17,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 20:55:17,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 20:55:17,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 20:55:17,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 261 [2023-08-30 20:55:17,126 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 23 transitions, 64 flow. Second operand has 5 states, 5 states have (on average 118.8) internal successors, (594), 5 states have internal predecessors, (594), 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 20:55:17,126 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 20:55:17,126 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 261 [2023-08-30 20:55:17,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 20:55:17,220 INFO L130 PetriNetUnfolder]: 202/305 cut-off events. [2023-08-30 20:55:17,221 INFO L131 PetriNetUnfolder]: For 99/99 co-relation queries the response was YES. [2023-08-30 20:55:17,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 740 conditions, 305 events. 202/305 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 869 event pairs, 128 based on Foata normal form. 1/233 useless extension candidates. Maximal degree in co-relation 137. Up to 304 conditions per place. [2023-08-30 20:55:17,225 INFO L137 encePairwiseOnDemand]: 258/261 looper letters, 21 selfloop transitions, 2 changer transitions 0/24 dead transitions. [2023-08-30 20:55:17,225 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 24 transitions, 112 flow [2023-08-30 20:55:17,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 20:55:17,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 20:55:17,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 368 transitions. [2023-08-30 20:55:17,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46998722860791825 [2023-08-30 20:55:17,230 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 368 transitions. [2023-08-30 20:55:17,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 368 transitions. [2023-08-30 20:55:17,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 20:55:17,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 368 transitions. [2023-08-30 20:55:17,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 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 20:55:17,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 261.0) internal successors, (1044), 4 states have internal predecessors, (1044), 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 20:55:17,235 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 261.0) internal successors, (1044), 4 states have internal predecessors, (1044), 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 20:55:17,235 INFO L175 Difference]: Start difference. First operand has 27 places, 23 transitions, 64 flow. Second operand 3 states and 368 transitions. [2023-08-30 20:55:17,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 24 transitions, 112 flow [2023-08-30 20:55:17,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 24 transitions, 106 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-30 20:55:17,238 INFO L231 Difference]: Finished difference. Result has 28 places, 24 transitions, 70 flow [2023-08-30 20:55:17,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=261, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=28, PETRI_TRANSITIONS=24} [2023-08-30 20:55:17,239 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -1 predicate places. [2023-08-30 20:55:17,240 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 24 transitions, 70 flow [2023-08-30 20:55:17,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 118.8) internal successors, (594), 5 states have internal predecessors, (594), 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 20:55:17,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:55:17,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 20:55:17,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 20:55:17,241 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 20:55:17,244 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:55:17,244 INFO L85 PathProgramCache]: Analyzing trace with hash -750213594, now seen corresponding path program 1 times [2023-08-30 20:55:17,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:55:17,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816494334] [2023-08-30 20:55:17,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:55:17,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:55:17,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:55:17,432 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 20:55:17,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:55:17,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816494334] [2023-08-30 20:55:17,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816494334] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 20:55:17,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920520187] [2023-08-30 20:55:17,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:55:17,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:55:17,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 20:55:17,441 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 20:55:17,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 20:55:17,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:55:17,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 20:55:17,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 20:55:17,603 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 20:55:17,603 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 20:55:17,660 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 20:55:17,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [920520187] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-30 20:55:17,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-30 20:55:17,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2023-08-30 20:55:17,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651073102] [2023-08-30 20:55:17,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 20:55:17,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 20:55:17,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 20:55:17,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 20:55:17,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-08-30 20:55:17,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 261 [2023-08-30 20:55:17,728 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 24 transitions, 70 flow. Second operand has 5 states, 5 states have (on average 116.0) internal successors, (580), 5 states have internal predecessors, (580), 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 20:55:17,728 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 20:55:17,728 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 261 [2023-08-30 20:55:17,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 20:55:17,798 INFO L130 PetriNetUnfolder]: 174/277 cut-off events. [2023-08-30 20:55:17,798 INFO L131 PetriNetUnfolder]: For 29/53 co-relation queries the response was YES. [2023-08-30 20:55:17,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 637 conditions, 277 events. 174/277 cut-off events. For 29/53 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 839 event pairs, 93 based on Foata normal form. 24/251 useless extension candidates. Maximal degree in co-relation 625. Up to 216 conditions per place. [2023-08-30 20:55:17,800 INFO L137 encePairwiseOnDemand]: 256/261 looper letters, 29 selfloop transitions, 4 changer transitions 0/34 dead transitions. [2023-08-30 20:55:17,800 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 34 transitions, 162 flow [2023-08-30 20:55:17,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 20:55:17,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 20:55:17,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 592 transitions. [2023-08-30 20:55:17,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.453639846743295 [2023-08-30 20:55:17,803 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 592 transitions. [2023-08-30 20:55:17,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 592 transitions. [2023-08-30 20:55:17,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 20:55:17,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 592 transitions. [2023-08-30 20:55:17,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 118.4) internal successors, (592), 5 states have internal predecessors, (592), 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 20:55:17,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 261.0) internal successors, (1566), 6 states have internal predecessors, (1566), 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 20:55:17,807 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 261.0) internal successors, (1566), 6 states have internal predecessors, (1566), 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 20:55:17,807 INFO L175 Difference]: Start difference. First operand has 28 places, 24 transitions, 70 flow. Second operand 5 states and 592 transitions. [2023-08-30 20:55:17,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 34 transitions, 162 flow [2023-08-30 20:55:17,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 34 transitions, 158 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 20:55:17,809 INFO L231 Difference]: Finished difference. Result has 32 places, 25 transitions, 82 flow [2023-08-30 20:55:17,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=261, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=82, PETRI_PLACES=32, PETRI_TRANSITIONS=25} [2023-08-30 20:55:17,810 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 3 predicate places. [2023-08-30 20:55:17,810 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 25 transitions, 82 flow [2023-08-30 20:55:17,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 116.0) internal successors, (580), 5 states have internal predecessors, (580), 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 20:55:17,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:55:17,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 20:55:17,820 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 20:55:18,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:55:18,017 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 20:55:18,017 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:55:18,018 INFO L85 PathProgramCache]: Analyzing trace with hash -655859395, now seen corresponding path program 1 times [2023-08-30 20:55:18,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:55:18,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409321176] [2023-08-30 20:55:18,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:55:18,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:55:18,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:55:18,612 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 20:55:18,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:55:18,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409321176] [2023-08-30 20:55:18,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409321176] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 20:55:18,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426832366] [2023-08-30 20:55:18,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:55:18,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:55:18,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 20:55:18,615 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 20:55:18,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 20:55:18,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:55:18,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 31 conjunts are in the unsatisfiable core [2023-08-30 20:55:18,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 20:55:18,771 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 20:55:18,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 20:55:18,822 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2023-08-30 20:55:18,888 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-08-30 20:55:18,940 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 18 [2023-08-30 20:55:18,986 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 20:55:18,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 20:55:19,055 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 21 [2023-08-30 20:55:19,192 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 20:55:19,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426832366] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-30 20:55:19,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-30 20:55:19,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 7] total 17 [2023-08-30 20:55:19,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750077004] [2023-08-30 20:55:19,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 20:55:19,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 20:55:19,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 20:55:19,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 20:55:19,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2023-08-30 20:55:19,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 261 [2023-08-30 20:55:19,269 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 82 flow. Second operand has 6 states, 6 states have (on average 113.5) internal successors, (681), 6 states have internal predecessors, (681), 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 20:55:19,269 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 20:55:19,269 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 261 [2023-08-30 20:55:19,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 20:55:19,339 INFO L130 PetriNetUnfolder]: 174/277 cut-off events. [2023-08-30 20:55:19,339 INFO L131 PetriNetUnfolder]: For 124/148 co-relation queries the response was YES. [2023-08-30 20:55:19,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 738 conditions, 277 events. 174/277 cut-off events. For 124/148 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 804 event pairs, 67 based on Foata normal form. 25/252 useless extension candidates. Maximal degree in co-relation 719. Up to 167 conditions per place. [2023-08-30 20:55:19,340 INFO L137 encePairwiseOnDemand]: 258/261 looper letters, 0 selfloop transitions, 0 changer transitions 36/36 dead transitions. [2023-08-30 20:55:19,340 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 36 transitions, 190 flow [2023-08-30 20:55:19,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 20:55:19,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 20:55:19,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 471 transitions. [2023-08-30 20:55:19,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4511494252873563 [2023-08-30 20:55:19,343 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 471 transitions. [2023-08-30 20:55:19,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 471 transitions. [2023-08-30 20:55:19,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 20:55:19,343 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 471 transitions. [2023-08-30 20:55:19,344 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 117.75) internal successors, (471), 4 states have internal predecessors, (471), 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 20:55:19,346 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 261.0) internal successors, (1305), 5 states have internal predecessors, (1305), 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 20:55:19,347 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 261.0) internal successors, (1305), 5 states have internal predecessors, (1305), 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 20:55:19,347 INFO L175 Difference]: Start difference. First operand has 32 places, 25 transitions, 82 flow. Second operand 4 states and 471 transitions. [2023-08-30 20:55:19,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 36 transitions, 190 flow [2023-08-30 20:55:19,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 36 transitions, 178 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-30 20:55:19,348 INFO L231 Difference]: Finished difference. Result has 31 places, 0 transitions, 0 flow [2023-08-30 20:55:19,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=261, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=31, PETRI_TRANSITIONS=0} [2023-08-30 20:55:19,349 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 2 predicate places. [2023-08-30 20:55:19,349 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 0 transitions, 0 flow [2023-08-30 20:55:19,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 113.5) internal successors, (681), 6 states have internal predecessors, (681), 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 20:55:19,352 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-30 20:55:19,353 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-30 20:55:19,353 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-30 20:55:19,353 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-30 20:55:19,361 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-30 20:55:19,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-30 20:55:19,559 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-30 20:55:19,561 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 20:55:19,561 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 20:55:19,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 08:55:19 BasicIcfg [2023-08-30 20:55:19,566 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 20:55:19,567 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 20:55:19,567 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 20:55:19,567 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 20:55:19,567 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 08:55:11" (3/4) ... [2023-08-30 20:55:19,570 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 20:55:19,573 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-30 20:55:19,573 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-30 20:55:19,573 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-08-30 20:55:19,577 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2023-08-30 20:55:19,578 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 20:55:19,578 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 20:55:19,578 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 20:55:19,627 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 20:55:19,628 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 20:55:19,628 INFO L158 Benchmark]: Toolchain (without parser) took 9133.90ms. Allocated memory was 77.6MB in the beginning and 136.3MB in the end (delta: 58.7MB). Free memory was 56.4MB in the beginning and 77.4MB in the end (delta: -21.0MB). Peak memory consumption was 36.4MB. Max. memory is 16.1GB. [2023-08-30 20:55:19,629 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 58.7MB. Free memory is still 37.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 20:55:19,629 INFO L158 Benchmark]: CACSL2BoogieTranslator took 275.80ms. Allocated memory is still 77.6MB. Free memory was 56.2MB in the beginning and 44.9MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-08-30 20:55:19,629 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.69ms. Allocated memory is still 77.6MB. Free memory was 44.9MB in the beginning and 43.0MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 20:55:19,629 INFO L158 Benchmark]: Boogie Preprocessor took 50.84ms. Allocated memory is still 77.6MB. Free memory was 43.0MB in the beginning and 41.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 20:55:19,630 INFO L158 Benchmark]: RCFGBuilder took 536.10ms. Allocated memory is still 77.6MB. Free memory was 41.3MB in the beginning and 43.2MB in the end (delta: -2.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-08-30 20:55:19,630 INFO L158 Benchmark]: TraceAbstraction took 8154.41ms. Allocated memory was 77.6MB in the beginning and 136.3MB in the end (delta: 58.7MB). Free memory was 42.9MB in the beginning and 80.2MB in the end (delta: -37.3MB). Peak memory consumption was 21.7MB. Max. memory is 16.1GB. [2023-08-30 20:55:19,630 INFO L158 Benchmark]: Witness Printer took 61.21ms. Allocated memory is still 136.3MB. Free memory was 80.2MB in the beginning and 77.4MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 20:55:19,632 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 58.7MB. Free memory is still 37.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 275.80ms. Allocated memory is still 77.6MB. Free memory was 56.2MB in the beginning and 44.9MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.69ms. Allocated memory is still 77.6MB. Free memory was 44.9MB in the beginning and 43.0MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 50.84ms. Allocated memory is still 77.6MB. Free memory was 43.0MB in the beginning and 41.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 536.10ms. Allocated memory is still 77.6MB. Free memory was 41.3MB in the beginning and 43.2MB in the end (delta: -2.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 8154.41ms. Allocated memory was 77.6MB in the beginning and 136.3MB in the end (delta: 58.7MB). Free memory was 42.9MB in the beginning and 80.2MB in the end (delta: -37.3MB). Peak memory consumption was 21.7MB. Max. memory is 16.1GB. * Witness Printer took 61.21ms. Allocated memory is still 136.3MB. Free memory was 80.2MB in the beginning and 77.4MB in the end (delta: 2.8MB). 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: 4.4s, 127 PlacesBefore, 29 PlacesAfterwards, 127 TransitionsBefore, 22 TransitionsAfterwards, 914 CoEnabledTransitionPairs, 7 FixpointIterations, 74 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 12 TrivialYvCompositions, 4 ConcurrentYvCompositions, 7 ChoiceCompositions, 121 TotalNumberOfCompositions, 1238 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1034, independent: 1007, independent conditional: 0, independent unconditional: 1007, dependent: 27, dependent conditional: 0, dependent unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 499, independent: 486, independent conditional: 0, independent unconditional: 486, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1034, independent: 521, independent conditional: 0, independent unconditional: 521, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 499, unknown conditional: 0, unknown unconditional: 499] , Statistics on independence cache: Total cache size (in pairs): 39, Positive cache size: 36, Positive conditional cache size: 0, Positive unconditional cache size: 36, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 98]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 156 locations, 4 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: 8.0s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 334 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 222 mSDsluCounter, 141 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 112 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 466 IncrementalHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 29 mSDtfsCounter, 466 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 105 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=82occurred in iteration=3, InterpolantAutomatonStates: 16, 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, 0.2s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 125 NumberOfCodeBlocks, 125 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 160 ConstructedInterpolants, 0 QuantifiedInterpolants, 739 SizeOfPredicates, 21 NumberOfNonLiveVariables, 438 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 9/16 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 20:55:19,658 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