/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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-ext/18_read_write_lock.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-05 18:26:42,581 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-05 18:26:42,583 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-05 18:26:42,609 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-05 18:26:42,610 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-05 18:26:42,612 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-05 18:26:42,616 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-05 18:26:42,617 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-05 18:26:42,618 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-05 18:26:42,618 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-05 18:26:42,619 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-05 18:26:42,620 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-05 18:26:42,620 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-05 18:26:42,621 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-05 18:26:42,621 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-05 18:26:42,622 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-05 18:26:42,622 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-05 18:26:42,623 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-05 18:26:42,624 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-05 18:26:42,625 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-05 18:26:42,626 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-05 18:26:42,635 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-05 18:26:42,639 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-05 18:26:42,640 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-05 18:26:42,649 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-05 18:26:42,649 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-05 18:26:42,649 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-05 18:26:42,650 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-05 18:26:42,650 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-05 18:26:42,651 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-05 18:26:42,651 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-05 18:26:42,652 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-05 18:26:42,652 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-05 18:26:42,653 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-05 18:26:42,653 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-05 18:26:42,653 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-05 18:26:42,654 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-05 18:26:42,654 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-05 18:26:42,654 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-05 18:26:42,655 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-05 18:26:42,655 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-05 18:26:42,660 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 [2022-12-05 18:26:42,683 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-05 18:26:42,683 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-05 18:26:42,684 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-05 18:26:42,684 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-05 18:26:42,685 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-05 18:26:42,685 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-05 18:26:42,685 INFO L138 SettingsManager]: * Use SBE=true [2022-12-05 18:26:42,686 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-05 18:26:42,686 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-05 18:26:42,686 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-05 18:26:42,686 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-05 18:26:42,687 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-05 18:26:42,687 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-05 18:26:42,687 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-05 18:26:42,687 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-05 18:26:42,687 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-05 18:26:42,687 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-05 18:26:42,687 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-05 18:26:42,687 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-05 18:26:42,688 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-05 18:26:42,688 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-05 18:26:42,688 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-05 18:26:42,688 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-05 18:26:42,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 18:26:42,688 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-05 18:26:42,688 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-05 18:26:42,688 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-05 18:26:42,689 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-05 18:26:42,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-05 18:26:42,689 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-05 18:26:42,689 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-05 18:26:42,689 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-05 18:26:42,963 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-05 18:26:42,981 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-05 18:26:42,983 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-05 18:26:42,983 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-05 18:26:42,984 INFO L275 PluginConnector]: CDTParser initialized [2022-12-05 18:26:42,985 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/18_read_write_lock.i [2022-12-05 18:26:44,023 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-05 18:26:44,240 INFO L351 CDTParser]: Found 1 translation units. [2022-12-05 18:26:44,241 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/18_read_write_lock.i [2022-12-05 18:26:44,250 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3c8eccd0/95690d79cccc4d168efad16e5b748d2a/FLAGbc68a597e [2022-12-05 18:26:44,260 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3c8eccd0/95690d79cccc4d168efad16e5b748d2a [2022-12-05 18:26:44,261 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-05 18:26:44,262 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-05 18:26:44,263 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-05 18:26:44,263 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-05 18:26:44,265 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-05 18:26:44,265 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 06:26:44" (1/1) ... [2022-12-05 18:26:44,266 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4960c03a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:26:44, skipping insertion in model container [2022-12-05 18:26:44,266 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 06:26:44" (1/1) ... [2022-12-05 18:26:44,270 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-05 18:26:44,309 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-05 18:26:44,447 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-05 18:26:44,545 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:26:44,546 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:26:44,548 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:26:44,548 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:26:44,548 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:26:44,549 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:26:44,549 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:26:44,550 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:26:44,550 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:26:44,550 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:26:44,552 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/18_read_write_lock.i[31161,31174] [2022-12-05 18:26:44,556 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:26:44,556 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:26:44,556 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:26:44,557 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:26:44,561 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 18:26:44,570 INFO L203 MainTranslator]: Completed pre-run [2022-12-05 18:26:44,591 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-05 18:26:44,606 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:26:44,606 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:26:44,608 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:26:44,608 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:26:44,609 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:26:44,609 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:26:44,609 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:26:44,610 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:26:44,610 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:26:44,610 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:26:44,611 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/18_read_write_lock.i[31161,31174] [2022-12-05 18:26:44,612 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:26:44,612 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:26:44,613 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:26:44,613 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:26:44,617 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 18:26:44,653 INFO L208 MainTranslator]: Completed translation [2022-12-05 18:26:44,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:26:44 WrapperNode [2022-12-05 18:26:44,654 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-05 18:26:44,655 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-05 18:26:44,655 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-05 18:26:44,655 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-05 18:26:44,660 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:26:44" (1/1) ... [2022-12-05 18:26:44,673 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:26:44" (1/1) ... [2022-12-05 18:26:44,693 INFO L138 Inliner]: procedures = 174, calls = 32, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 78 [2022-12-05 18:26:44,694 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-05 18:26:44,695 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-05 18:26:44,695 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-05 18:26:44,695 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-05 18:26:44,702 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:26:44" (1/1) ... [2022-12-05 18:26:44,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:26:44" (1/1) ... [2022-12-05 18:26:44,704 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:26:44" (1/1) ... [2022-12-05 18:26:44,705 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:26:44" (1/1) ... [2022-12-05 18:26:44,708 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:26:44" (1/1) ... [2022-12-05 18:26:44,709 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:26:44" (1/1) ... [2022-12-05 18:26:44,710 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:26:44" (1/1) ... [2022-12-05 18:26:44,711 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:26:44" (1/1) ... [2022-12-05 18:26:44,712 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-05 18:26:44,713 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-05 18:26:44,713 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-05 18:26:44,713 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-05 18:26:44,714 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:26:44" (1/1) ... [2022-12-05 18:26:44,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 18:26:44,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 18:26:44,772 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) [2022-12-05 18:26:44,793 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 [2022-12-05 18:26:44,807 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-12-05 18:26:44,808 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-12-05 18:26:44,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-05 18:26:44,808 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-05 18:26:44,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-05 18:26:44,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-05 18:26:44,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-05 18:26:44,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-05 18:26:44,809 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-05 18:26:44,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-05 18:26:44,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-05 18:26:44,810 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-05 18:26:44,939 INFO L236 CfgBuilder]: Building ICFG [2022-12-05 18:26:44,940 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-05 18:26:45,058 INFO L277 CfgBuilder]: Performing block encoding [2022-12-05 18:26:45,099 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-05 18:26:45,099 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-05 18:26:45,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 06:26:45 BoogieIcfgContainer [2022-12-05 18:26:45,101 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-05 18:26:45,102 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-05 18:26:45,102 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-05 18:26:45,104 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-05 18:26:45,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 06:26:44" (1/3) ... [2022-12-05 18:26:45,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aa720a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 06:26:45, skipping insertion in model container [2022-12-05 18:26:45,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:26:44" (2/3) ... [2022-12-05 18:26:45,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aa720a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 06:26:45, skipping insertion in model container [2022-12-05 18:26:45,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 06:26:45" (3/3) ... [2022-12-05 18:26:45,106 INFO L112 eAbstractionObserver]: Analyzing ICFG 18_read_write_lock.i [2022-12-05 18:26:45,119 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-05 18:26:45,119 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-05 18:26:45,119 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-05 18:26:45,149 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-05 18:26:45,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 51 transitions, 107 flow [2022-12-05 18:26:45,209 INFO L130 PetriNetUnfolder]: 1/50 cut-off events. [2022-12-05 18:26:45,210 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-05 18:26:45,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 50 events. 1/50 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 18 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 32. Up to 2 conditions per place. [2022-12-05 18:26:45,212 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 51 transitions, 107 flow [2022-12-05 18:26:45,215 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 37 transitions, 77 flow [2022-12-05 18:26:45,223 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-05 18:26:45,237 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;@7e935782, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-05 18:26:45,237 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-05 18:26:45,245 INFO L130 PetriNetUnfolder]: 0/36 cut-off events. [2022-12-05 18:26:45,245 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-05 18:26:45,245 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:26:45,246 INFO L213 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] [2022-12-05 18:26:45,246 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 18:26:45,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:26:45,250 INFO L85 PathProgramCache]: Analyzing trace with hash 629989057, now seen corresponding path program 1 times [2022-12-05 18:26:45,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:26:45,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770249628] [2022-12-05 18:26:45,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:26:45,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:26:45,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:26:45,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:26:45,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:26:45,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770249628] [2022-12-05 18:26:45,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770249628] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:26:45,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:26:45,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-05 18:26:45,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080506055] [2022-12-05 18:26:45,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:26:45,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-05 18:26:45,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:26:45,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-05 18:26:45,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-05 18:26:45,576 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 51 [2022-12-05 18:26:45,579 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 77 flow. Second operand has 6 states, 6 states have (on average 37.666666666666664) internal successors, (226), 6 states have internal predecessors, (226), 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) [2022-12-05 18:26:45,579 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:26:45,579 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 51 [2022-12-05 18:26:45,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:26:45,702 INFO L130 PetriNetUnfolder]: 10/82 cut-off events. [2022-12-05 18:26:45,702 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-05 18:26:45,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 82 events. 10/82 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 197 event pairs, 4 based on Foata normal form. 4/84 useless extension candidates. Maximal degree in co-relation 100. Up to 23 conditions per place. [2022-12-05 18:26:45,704 INFO L137 encePairwiseOnDemand]: 45/51 looper letters, 13 selfloop transitions, 6 changer transitions 4/48 dead transitions. [2022-12-05 18:26:45,704 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 48 transitions, 145 flow [2022-12-05 18:26:45,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-05 18:26:45,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-05 18:26:45,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 277 transitions. [2022-12-05 18:26:45,732 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7759103641456583 [2022-12-05 18:26:45,733 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 77 flow. Second operand 7 states and 277 transitions. [2022-12-05 18:26:45,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 48 transitions, 145 flow [2022-12-05 18:26:45,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 48 transitions, 144 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-05 18:26:45,737 INFO L231 Difference]: Finished difference. Result has 51 places, 41 transitions, 114 flow [2022-12-05 18:26:45,738 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=114, PETRI_PLACES=51, PETRI_TRANSITIONS=41} [2022-12-05 18:26:45,740 INFO L294 CegarLoopForPetriNet]: 41 programPoint places, 10 predicate places. [2022-12-05 18:26:45,741 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 41 transitions, 114 flow [2022-12-05 18:26:45,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 37.666666666666664) internal successors, (226), 6 states have internal predecessors, (226), 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) [2022-12-05 18:26:45,741 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:26:45,741 INFO L213 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] [2022-12-05 18:26:45,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-05 18:26:45,742 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 18:26:45,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:26:45,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1401602934, now seen corresponding path program 1 times [2022-12-05 18:26:45,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:26:45,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757640556] [2022-12-05 18:26:45,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:26:45,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:26:45,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:26:45,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:26:45,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:26:45,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757640556] [2022-12-05 18:26:45,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757640556] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:26:45,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:26:45,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-05 18:26:45,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014389237] [2022-12-05 18:26:45,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:26:45,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-05 18:26:45,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:26:45,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-05 18:26:45,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-05 18:26:45,951 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 51 [2022-12-05 18:26:45,952 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 41 transitions, 114 flow. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 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) [2022-12-05 18:26:45,952 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:26:45,952 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 51 [2022-12-05 18:26:45,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:26:45,980 INFO L130 PetriNetUnfolder]: 2/51 cut-off events. [2022-12-05 18:26:45,981 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-05 18:26:45,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 51 events. 2/51 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 49 event pairs, 0 based on Foata normal form. 1/51 useless extension candidates. Maximal degree in co-relation 75. Up to 5 conditions per place. [2022-12-05 18:26:45,982 INFO L137 encePairwiseOnDemand]: 48/51 looper letters, 2 selfloop transitions, 2 changer transitions 0/41 dead transitions. [2022-12-05 18:26:45,982 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 41 transitions, 122 flow [2022-12-05 18:26:45,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-05 18:26:45,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-05 18:26:45,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 177 transitions. [2022-12-05 18:26:45,988 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8676470588235294 [2022-12-05 18:26:45,988 INFO L175 Difference]: Start difference. First operand has 51 places, 41 transitions, 114 flow. Second operand 4 states and 177 transitions. [2022-12-05 18:26:45,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 41 transitions, 122 flow [2022-12-05 18:26:45,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 41 transitions, 114 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-12-05 18:26:45,992 INFO L231 Difference]: Finished difference. Result has 50 places, 41 transitions, 113 flow [2022-12-05 18:26:45,992 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=113, PETRI_PLACES=50, PETRI_TRANSITIONS=41} [2022-12-05 18:26:45,994 INFO L294 CegarLoopForPetriNet]: 41 programPoint places, 9 predicate places. [2022-12-05 18:26:45,994 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 41 transitions, 113 flow [2022-12-05 18:26:45,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 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) [2022-12-05 18:26:45,994 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:26:45,995 INFO L213 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] [2022-12-05 18:26:45,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-05 18:26:45,995 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 18:26:45,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:26:45,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1120339756, now seen corresponding path program 2 times [2022-12-05 18:26:45,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:26:45,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494328699] [2022-12-05 18:26:45,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:26:45,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:26:46,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:26:46,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:26:46,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:26:46,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494328699] [2022-12-05 18:26:46,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494328699] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:26:46,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:26:46,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 18:26:46,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153376976] [2022-12-05 18:26:46,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:26:46,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 18:26:46,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:26:46,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 18:26:46,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 18:26:46,140 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 51 [2022-12-05 18:26:46,140 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 41 transitions, 113 flow. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 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) [2022-12-05 18:26:46,140 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:26:46,140 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 51 [2022-12-05 18:26:46,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:26:46,148 INFO L130 PetriNetUnfolder]: 0/30 cut-off events. [2022-12-05 18:26:46,148 INFO L131 PetriNetUnfolder]: For 7/9 co-relation queries the response was YES. [2022-12-05 18:26:46,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 30 events. 0/30 cut-off events. For 7/9 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 4 event pairs, 0 based on Foata normal form. 1/31 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2022-12-05 18:26:46,148 INFO L137 encePairwiseOnDemand]: 49/51 looper letters, 0 selfloop transitions, 0 changer transitions 30/30 dead transitions. [2022-12-05 18:26:46,148 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 30 transitions, 87 flow [2022-12-05 18:26:46,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 18:26:46,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 18:26:46,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 137 transitions. [2022-12-05 18:26:46,150 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8954248366013072 [2022-12-05 18:26:46,150 INFO L175 Difference]: Start difference. First operand has 50 places, 41 transitions, 113 flow. Second operand 3 states and 137 transitions. [2022-12-05 18:26:46,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 30 transitions, 87 flow [2022-12-05 18:26:46,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 30 transitions, 75 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-12-05 18:26:46,153 INFO L231 Difference]: Finished difference. Result has 38 places, 0 transitions, 0 flow [2022-12-05 18:26:46,153 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=38, PETRI_TRANSITIONS=0} [2022-12-05 18:26:46,154 INFO L294 CegarLoopForPetriNet]: 41 programPoint places, -3 predicate places. [2022-12-05 18:26:46,154 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 0 transitions, 0 flow [2022-12-05 18:26:46,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 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) [2022-12-05 18:26:46,156 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-12-05 18:26:46,157 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2022-12-05 18:26:46,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-05 18:26:46,157 INFO L458 BasicCegarLoop]: Path program histogram: [2, 1] [2022-12-05 18:26:46,161 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-05 18:26:46,161 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-05 18:26:46,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.12 06:26:46 BasicIcfg [2022-12-05 18:26:46,168 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-05 18:26:46,169 INFO L158 Benchmark]: Toolchain (without parser) took 1906.45ms. Allocated memory is still 199.2MB. Free memory was 159.3MB in the beginning and 149.1MB in the end (delta: 10.2MB). Peak memory consumption was 11.3MB. Max. memory is 8.0GB. [2022-12-05 18:26:46,169 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 199.2MB. Free memory is still 176.5MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-05 18:26:46,170 INFO L158 Benchmark]: CACSL2BoogieTranslator took 391.07ms. Allocated memory is still 199.2MB. Free memory was 159.3MB in the beginning and 138.3MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2022-12-05 18:26:46,171 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.77ms. Allocated memory is still 199.2MB. Free memory was 138.3MB in the beginning and 136.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-05 18:26:46,172 INFO L158 Benchmark]: Boogie Preprocessor took 17.62ms. Allocated memory is still 199.2MB. Free memory was 136.2MB in the beginning and 134.7MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-05 18:26:46,173 INFO L158 Benchmark]: RCFGBuilder took 387.80ms. Allocated memory is still 199.2MB. Free memory was 134.7MB in the beginning and 119.5MB in the end (delta: 15.2MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2022-12-05 18:26:46,174 INFO L158 Benchmark]: TraceAbstraction took 1066.19ms. Allocated memory is still 199.2MB. Free memory was 119.0MB in the beginning and 149.1MB in the end (delta: -30.1MB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-05 18:26:46,177 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 199.2MB. Free memory is still 176.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 391.07ms. Allocated memory is still 199.2MB. Free memory was 159.3MB in the beginning and 138.3MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 38.77ms. Allocated memory is still 199.2MB. Free memory was 138.3MB in the beginning and 136.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 17.62ms. Allocated memory is still 199.2MB. Free memory was 136.2MB in the beginning and 134.7MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 387.80ms. Allocated memory is still 199.2MB. Free memory was 134.7MB in the beginning and 119.5MB in the end (delta: 15.2MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * TraceAbstraction took 1066.19ms. Allocated memory is still 199.2MB. Free memory was 119.0MB in the beginning and 149.1MB in the end (delta: -30.1MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 738]: 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 3 procedures, 59 locations, 2 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: 1.0s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12 mSDsluCounter, 25 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 13 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 78 IncrementalHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 12 mSDtfsCounter, 78 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=114occurred in iteration=1, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 99 NumberOfCodeBlocks, 99 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 96 ConstructedInterpolants, 0 QuantifiedInterpolants, 156 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-05 18:26:46,192 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...