/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.use.on-demand.petri.net.difference true --traceabstraction.size.reduction.to.apply.after.petri.net.difference REMOVE_REDUNDANT_FLOW -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-min-le-max.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 13:24:52,873 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 13:24:52,874 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 13:24:52,906 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 13:24:52,906 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 13:24:52,908 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 13:24:52,911 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 13:24:52,913 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 13:24:52,916 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 13:24:52,921 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 13:24:52,922 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 13:24:52,923 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 13:24:52,923 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 13:24:52,925 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 13:24:52,926 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 13:24:52,928 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 13:24:52,929 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 13:24:52,929 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 13:24:52,931 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 13:24:52,936 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 13:24:52,937 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 13:24:52,938 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 13:24:52,938 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 13:24:52,939 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 13:24:52,944 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 13:24:52,944 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 13:24:52,944 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 13:24:52,945 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 13:24:52,946 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 13:24:52,946 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 13:24:52,946 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 13:24:52,948 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 13:24:52,949 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 13:24:52,949 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 13:24:52,950 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 13:24:52,950 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 13:24:52,950 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 13:24:52,950 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 13:24:52,950 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 13:24:52,951 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 13:24:52,951 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 13:24:52,952 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-12-12 13:24:52,986 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 13:24:52,986 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 13:24:52,987 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 13:24:52,988 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 13:24:52,988 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 13:24:52,989 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 13:24:52,989 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 13:24:52,989 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 13:24:52,989 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 13:24:52,989 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 13:24:52,990 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 13:24:52,990 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 13:24:52,990 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 13:24:52,990 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 13:24:52,990 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 13:24:52,990 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 13:24:52,990 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 13:24:52,990 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 13:24:52,991 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 13:24:52,991 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 13:24:52,991 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 13:24:52,991 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 13:24:52,991 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 13:24:52,991 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 13:24:52,991 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 13:24:52,991 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 13:24:52,992 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 13:24:52,992 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-12 13:24:52,992 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 13:24:52,992 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 13:24:52,992 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 13:24:52,992 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Size reduction to apply after Petri net difference -> REMOVE_REDUNDANT_FLOW [2022-12-12 13:24:53,219 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 13:24:53,240 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 13:24:53,242 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 13:24:53,242 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 13:24:53,243 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 13:24:53,244 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-min-le-max.wvr.c [2022-12-12 13:24:54,213 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 13:24:54,378 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 13:24:54,379 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-min-le-max.wvr.c [2022-12-12 13:24:54,389 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ceb82f05/9ab69e25794e45ef8008650a7cb870ca/FLAG3e46abf42 [2022-12-12 13:24:54,402 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ceb82f05/9ab69e25794e45ef8008650a7cb870ca [2022-12-12 13:24:54,404 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 13:24:54,405 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 13:24:54,406 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 13:24:54,406 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 13:24:54,408 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 13:24:54,408 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 01:24:54" (1/1) ... [2022-12-12 13:24:54,409 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@484a2acc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:24:54, skipping insertion in model container [2022-12-12 13:24:54,409 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 01:24:54" (1/1) ... [2022-12-12 13:24:54,413 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 13:24:54,432 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 13:24:54,556 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 13:24:54,559 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 13:24:54,563 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 13:24:54,565 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 13:24:54,565 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 13:24:54,566 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 13:24:54,579 WARN L237 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] [2022-12-12 13:24:54,591 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 13:24:54,597 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 13:24:54,610 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 13:24:54,613 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 13:24:54,614 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 13:24:54,615 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 13:24:54,616 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 13:24:54,616 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 13:24:54,628 WARN L237 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] [2022-12-12 13:24:54,632 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 13:24:54,644 INFO L208 MainTranslator]: Completed translation [2022-12-12 13:24:54,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:24:54 WrapperNode [2022-12-12 13:24:54,645 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 13:24:54,646 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 13:24:54,646 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 13:24:54,646 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 13:24:54,651 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:24:54" (1/1) ... [2022-12-12 13:24:54,663 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:24:54" (1/1) ... [2022-12-12 13:24:54,686 INFO L138 Inliner]: procedures = 24, calls = 43, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 104 [2022-12-12 13:24:54,686 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 13:24:54,687 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 13:24:54,687 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 13:24:54,687 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 13:24:54,693 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:24:54" (1/1) ... [2022-12-12 13:24:54,694 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:24:54" (1/1) ... [2022-12-12 13:24:54,704 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:24:54" (1/1) ... [2022-12-12 13:24:54,705 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:24:54" (1/1) ... [2022-12-12 13:24:54,717 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:24:54" (1/1) ... [2022-12-12 13:24:54,719 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:24:54" (1/1) ... [2022-12-12 13:24:54,720 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:24:54" (1/1) ... [2022-12-12 13:24:54,721 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:24:54" (1/1) ... [2022-12-12 13:24:54,723 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 13:24:54,723 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 13:24:54,723 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 13:24:54,723 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 13:24:54,724 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:24:54" (1/1) ... [2022-12-12 13:24:54,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 13:24:54,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 13:24:54,755 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) [2022-12-12 13:24:54,769 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 [2022-12-12 13:24:54,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 13:24:54,782 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-12 13:24:54,782 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-12 13:24:54,782 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-12 13:24:54,782 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-12 13:24:54,782 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-12 13:24:54,782 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-12 13:24:54,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 13:24:54,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 13:24:54,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 13:24:54,783 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-12 13:24:54,783 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-12 13:24:54,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-12 13:24:54,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 13:24:54,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 13:24:54,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-12 13:24:54,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 13:24:54,784 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-12 13:24:54,894 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 13:24:54,896 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 13:24:55,139 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 13:24:55,186 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 13:24:55,186 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-12 13:24:55,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 01:24:55 BoogieIcfgContainer [2022-12-12 13:24:55,188 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 13:24:55,190 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 13:24:55,190 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 13:24:55,197 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 13:24:55,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 01:24:54" (1/3) ... [2022-12-12 13:24:55,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@508a376e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 01:24:55, skipping insertion in model container [2022-12-12 13:24:55,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 01:24:54" (2/3) ... [2022-12-12 13:24:55,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@508a376e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 01:24:55, skipping insertion in model container [2022-12-12 13:24:55,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 01:24:55" (3/3) ... [2022-12-12 13:24:55,199 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-min-le-max.wvr.c [2022-12-12 13:24:55,212 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 13:24:55,212 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-12 13:24:55,212 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 13:24:55,290 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-12 13:24:55,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 138 places, 138 transitions, 300 flow [2022-12-12 13:24:55,401 INFO L130 PetriNetUnfolder]: 10/135 cut-off events. [2022-12-12 13:24:55,401 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-12 13:24:55,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 135 events. 10/135 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 75 event pairs, 0 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 106. Up to 2 conditions per place. [2022-12-12 13:24:55,406 INFO L82 GeneralOperation]: Start removeDead. Operand has 138 places, 138 transitions, 300 flow [2022-12-12 13:24:55,412 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 125 places, 125 transitions, 268 flow [2022-12-12 13:24:55,423 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 13:24:55,430 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=false, 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;@2367f551, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 13:24:55,430 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-12 13:24:55,504 INFO L130 PetriNetUnfolder]: 10/124 cut-off events. [2022-12-12 13:24:55,505 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-12 13:24:55,505 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 13:24:55,505 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 13:24:55,506 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)] === [2022-12-12 13:24:55,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 13:24:55,509 INFO L85 PathProgramCache]: Analyzing trace with hash 762639837, now seen corresponding path program 1 times [2022-12-12 13:24:55,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 13:24:55,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981643961] [2022-12-12 13:24:55,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 13:24:55,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 13:24:55,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 13:24:56,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 13:24:56,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 13:24:56,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981643961] [2022-12-12 13:24:56,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981643961] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 13:24:56,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 13:24:56,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-12 13:24:56,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77036971] [2022-12-12 13:24:56,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 13:24:56,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-12 13:24:56,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 13:24:56,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-12 13:24:56,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-12-12 13:24:56,233 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 138 [2022-12-12 13:24:56,237 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 125 transitions, 268 flow. Second operand has 9 states, 9 states have (on average 84.77777777777777) internal successors, (763), 9 states have internal predecessors, (763), 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) [2022-12-12 13:24:56,238 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 13:24:56,238 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 138 [2022-12-12 13:24:56,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 13:24:56,536 INFO L130 PetriNetUnfolder]: 74/278 cut-off events. [2022-12-12 13:24:56,536 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-12-12 13:24:56,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 456 conditions, 278 events. 74/278 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 788 event pairs, 17 based on Foata normal form. 59/321 useless extension candidates. Maximal degree in co-relation 247. Up to 64 conditions per place. [2022-12-12 13:24:56,540 INFO L137 encePairwiseOnDemand]: 117/138 looper letters, 0 selfloop transitions, 0 changer transitions 122/122 dead transitions. [2022-12-12 13:24:56,541 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 122 transitions, 380 flow [2022-12-12 13:24:56,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-12 13:24:56,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-12 13:24:56,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1106 transitions. [2022-12-12 13:24:56,558 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6164994425863991 [2022-12-12 13:24:56,561 INFO L295 CegarLoopForPetriNet]: 125 programPoint places, 9 predicate places. [2022-12-12 13:24:56,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 122 transitions, 380 flow [2022-12-12 13:24:56,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 122 transitions, 297 flow, removed 24 selfloop flow, removed 15 redundant places. [2022-12-12 13:24:56,568 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 122 transitions, 297 flow [2022-12-12 13:24:56,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 84.77777777777777) internal successors, (763), 9 states have internal predecessors, (763), 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) [2022-12-12 13:24:56,571 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-12-12 13:24:56,571 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-12-12 13:24:56,571 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-12-12 13:24:56,571 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-12-12 13:24:56,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 13:24:56,572 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-12 13:24:56,574 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 13:24:56,575 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 13:24:56,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 01:24:56 BasicIcfg [2022-12-12 13:24:56,578 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 13:24:56,579 INFO L158 Benchmark]: Toolchain (without parser) took 2173.84ms. Allocated memory was 181.4MB in the beginning and 218.1MB in the end (delta: 36.7MB). Free memory was 149.6MB in the beginning and 167.7MB in the end (delta: -18.1MB). Peak memory consumption was 19.1MB. Max. memory is 8.0GB. [2022-12-12 13:24:56,579 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 181.4MB. Free memory is still 158.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 13:24:56,580 INFO L158 Benchmark]: CACSL2BoogieTranslator took 239.15ms. Allocated memory is still 181.4MB. Free memory was 149.1MB in the beginning and 137.1MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-12-12 13:24:56,580 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.15ms. Allocated memory is still 181.4MB. Free memory was 137.1MB in the beginning and 135.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 13:24:56,580 INFO L158 Benchmark]: Boogie Preprocessor took 35.74ms. Allocated memory is still 181.4MB. Free memory was 135.0MB in the beginning and 133.4MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-12 13:24:56,581 INFO L158 Benchmark]: RCFGBuilder took 464.78ms. Allocated memory is still 181.4MB. Free memory was 133.4MB in the beginning and 114.5MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2022-12-12 13:24:56,581 INFO L158 Benchmark]: TraceAbstraction took 1389.01ms. Allocated memory was 181.4MB in the beginning and 218.1MB in the end (delta: 36.7MB). Free memory was 113.5MB in the beginning and 167.7MB in the end (delta: -54.3MB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 13:24:56,582 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 181.4MB. Free memory is still 158.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 239.15ms. Allocated memory is still 181.4MB. Free memory was 149.1MB in the beginning and 137.1MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 40.15ms. Allocated memory is still 181.4MB. Free memory was 137.1MB in the beginning and 135.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 35.74ms. Allocated memory is still 181.4MB. Free memory was 135.0MB in the beginning and 133.4MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 464.78ms. Allocated memory is still 181.4MB. Free memory was 133.4MB in the beginning and 114.5MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * TraceAbstraction took 1389.01ms. Allocated memory was 181.4MB in the beginning and 218.1MB in the end (delta: 36.7MB). Free memory was 113.5MB in the beginning and 167.7MB in the end (delta: -54.3MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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, 154 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.1s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 25 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 25 mSDsluCounter, 215 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 179 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 174 IncrementalHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 36 mSDtfsCounter, 174 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=297occurred in iteration=1, InterpolantAutomatonStates: 13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 83 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 97 NumberOfCodeBlocks, 97 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 96 ConstructedInterpolants, 0 QuantifiedInterpolants, 334 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-12 13:24:56,606 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...