./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-ext/18_read_write_lock.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 96f16385 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-ext/18_read_write_lock.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 11d3061d436882c8b142ecba28963b9473be55d7 .......................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-96f1638 [2020-12-02 11:44:50,483 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 11:44:50,488 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 11:44:50,554 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 11:44:50,555 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 11:44:50,560 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 11:44:50,564 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 11:44:50,571 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 11:44:50,579 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 11:44:50,587 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 11:44:50,589 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 11:44:50,591 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 11:44:50,592 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 11:44:50,596 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 11:44:50,597 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 11:44:50,600 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 11:44:50,601 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 11:44:50,606 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 11:44:50,610 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 11:44:50,618 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 11:44:50,621 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 11:44:50,623 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 11:44:50,626 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 11:44:50,628 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 11:44:50,638 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 11:44:50,640 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 11:44:50,641 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 11:44:50,642 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 11:44:50,644 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 11:44:50,645 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 11:44:50,646 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 11:44:50,646 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 11:44:50,649 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 11:44:50,650 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 11:44:50,651 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 11:44:50,652 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 11:44:50,652 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 11:44:50,653 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 11:44:50,653 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 11:44:50,656 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 11:44:50,657 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 11:44:50,658 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-02 11:44:50,716 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 11:44:50,716 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 11:44:50,721 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 11:44:50,722 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 11:44:50,722 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 11:44:50,722 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 11:44:50,723 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 11:44:50,723 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-02 11:44:50,723 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 11:44:50,723 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 11:44:50,725 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 11:44:50,725 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 11:44:50,725 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 11:44:50,726 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 11:44:50,726 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 11:44:50,726 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 11:44:50,727 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 11:44:50,727 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 11:44:50,728 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 11:44:50,728 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 11:44:50,728 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 11:44:50,728 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 11:44:50,729 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 11:44:50,729 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 11:44:50,729 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 11:44:50,730 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-02 11:44:50,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-02 11:44:50,730 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 11:44:50,731 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 11:44:50,731 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 11d3061d436882c8b142ecba28963b9473be55d7 [2020-12-02 11:44:51,179 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 11:44:51,214 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 11:44:51,217 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 11:44:51,219 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 11:44:51,220 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 11:44:51,222 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/18_read_write_lock.i [2020-12-02 11:44:51,314 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e70ecb03e/d83bd86279c94dc2be3be7cc403359cb/FLAG29f225ade [2020-12-02 11:44:51,981 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 11:44:51,982 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/18_read_write_lock.i [2020-12-02 11:44:52,001 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e70ecb03e/d83bd86279c94dc2be3be7cc403359cb/FLAG29f225ade [2020-12-02 11:44:52,243 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e70ecb03e/d83bd86279c94dc2be3be7cc403359cb [2020-12-02 11:44:52,248 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 11:44:52,252 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 11:44:52,256 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 11:44:52,257 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 11:44:52,261 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 11:44:52,262 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:44:52" (1/1) ... [2020-12-02 11:44:52,266 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f9d6d3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:44:52, skipping insertion in model container [2020-12-02 11:44:52,267 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:44:52" (1/1) ... [2020-12-02 11:44:52,276 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 11:44:52,352 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-02 11:44:52,560 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-12-02 11:44:52,809 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/18_read_write_lock.i[31161,31174] [2020-12-02 11:44:52,825 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 11:44:52,840 INFO L203 MainTranslator]: Completed pre-run [2020-12-02 11:44:52,876 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-12-02 11:44:52,901 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/18_read_write_lock.i[31161,31174] [2020-12-02 11:44:52,905 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 11:44:53,029 INFO L208 MainTranslator]: Completed translation [2020-12-02 11:44:53,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:44:53 WrapperNode [2020-12-02 11:44:53,031 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 11:44:53,034 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 11:44:53,034 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 11:44:53,035 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 11:44:53,045 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:44:53" (1/1) ... [2020-12-02 11:44:53,088 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:44:53" (1/1) ... [2020-12-02 11:44:53,136 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 11:44:53,137 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 11:44:53,138 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 11:44:53,138 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 11:44:53,148 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:44:53" (1/1) ... [2020-12-02 11:44:53,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:44:53" (1/1) ... [2020-12-02 11:44:53,157 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:44:53" (1/1) ... [2020-12-02 11:44:53,158 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:44:53" (1/1) ... [2020-12-02 11:44:53,178 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:44:53" (1/1) ... [2020-12-02 11:44:53,183 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:44:53" (1/1) ... [2020-12-02 11:44:53,186 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:44:53" (1/1) ... [2020-12-02 11:44:53,195 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 11:44:53,196 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 11:44:53,196 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 11:44:53,197 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 11:44:53,198 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:44:53" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 11:44:53,312 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-12-02 11:44:53,312 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-12-02 11:44:53,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-02 11:44:53,313 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-02 11:44:53,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 11:44:53,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-02 11:44:53,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-02 11:44:53,314 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-02 11:44:53,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 11:44:53,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 11:44:53,316 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-02 11:44:53,916 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 11:44:53,917 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-12-02 11:44:53,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:44:53 BoogieIcfgContainer [2020-12-02 11:44:53,920 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 11:44:53,923 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 11:44:53,923 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 11:44:53,927 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 11:44:53,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 11:44:52" (1/3) ... [2020-12-02 11:44:53,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57dba5ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:44:53, skipping insertion in model container [2020-12-02 11:44:53,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:44:53" (2/3) ... [2020-12-02 11:44:53,929 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57dba5ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:44:53, skipping insertion in model container [2020-12-02 11:44:53,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:44:53" (3/3) ... [2020-12-02 11:44:53,932 INFO L111 eAbstractionObserver]: Analyzing ICFG 18_read_write_lock.i [2020-12-02 11:44:53,953 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-02 11:44:53,953 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 11:44:53,957 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-02 11:44:53,958 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-02 11:44:53,994 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:44:53,994 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:44:53,995 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:44:53,995 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:44:53,996 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:44:53,997 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:44:53,997 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:44:53,997 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:44:53,997 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:44:53,998 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:44:53,998 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:44:53,998 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:44:53,999 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:44:53,999 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:44:53,999 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:44:53,999 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:44:54,002 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:44:54,002 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:44:54,002 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:44:54,002 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:44:54,002 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:44:54,003 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 11:44:54,010 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-02 11:44:54,026 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-02 11:44:54,067 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 11:44:54,067 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 11:44:54,067 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 11:44:54,067 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 11:44:54,067 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 11:44:54,068 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 11:44:54,068 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 11:44:54,068 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 11:44:54,090 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-02 11:44:54,094 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 51 places, 48 transitions, 101 flow [2020-12-02 11:44:54,097 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 51 places, 48 transitions, 101 flow [2020-12-02 11:44:54,100 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 51 places, 48 transitions, 101 flow [2020-12-02 11:44:54,156 INFO L129 PetriNetUnfolder]: 1/47 cut-off events. [2020-12-02 11:44:54,156 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-02 11:44:54,163 INFO L84 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 47 events. 1/47 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 19 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 31. Up to 2 conditions per place. [2020-12-02 11:44:54,164 INFO L116 LiptonReduction]: Number of co-enabled transitions 300 [2020-12-02 11:44:56,779 WARN L197 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2020-12-02 11:44:57,041 WARN L197 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2020-12-02 11:44:57,141 INFO L131 LiptonReduction]: Checked pairs total: 465 [2020-12-02 11:44:57,141 INFO L133 LiptonReduction]: Total number of compositions: 45 [2020-12-02 11:44:57,148 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 14 places, 11 transitions, 27 flow [2020-12-02 11:44:57,157 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 20 states. [2020-12-02 11:44:57,159 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-12-02 11:44:57,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-02 11:44:57,165 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 11:44:57,166 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-02 11:44:57,167 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 11:44:57,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 11:44:57,174 INFO L82 PathProgramCache]: Analyzing trace with hash 240120319, now seen corresponding path program 1 times [2020-12-02 11:44:57,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 11:44:57,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224015411] [2020-12-02 11:44:57,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 11:44:57,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 11:44:57,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 11:44:57,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224015411] [2020-12-02 11:44:57,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 11:44:57,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 11:44:57,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509271038] [2020-12-02 11:44:57,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-02 11:44:57,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 11:44:57,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-02 11:44:57,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-02 11:44:57,489 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 3 states. [2020-12-02 11:44:57,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 11:44:57,532 INFO L93 Difference]: Finished difference Result 21 states and 27 transitions. [2020-12-02 11:44:57,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-02 11:44:57,535 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-12-02 11:44:57,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 11:44:57,544 INFO L225 Difference]: With dead ends: 21 [2020-12-02 11:44:57,544 INFO L226 Difference]: Without dead ends: 10 [2020-12-02 11:44:57,546 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-02 11:44:57,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-12-02 11:44:57,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-12-02 11:44:57,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-12-02 11:44:57,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2020-12-02 11:44:57,580 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 5 [2020-12-02 11:44:57,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 11:44:57,581 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2020-12-02 11:44:57,581 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-02 11:44:57,581 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2020-12-02 11:44:57,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-02 11:44:57,582 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 11:44:57,582 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-02 11:44:57,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-02 11:44:57,583 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 11:44:57,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 11:44:57,584 INFO L82 PathProgramCache]: Analyzing trace with hash -1188208493, now seen corresponding path program 1 times [2020-12-02 11:44:57,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 11:44:57,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504815828] [2020-12-02 11:44:57,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 11:44:57,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 11:44:57,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 11:44:57,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504815828] [2020-12-02 11:44:57,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 11:44:57,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 11:44:57,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095930837] [2020-12-02 11:44:57,651 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-02 11:44:57,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 11:44:57,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-02 11:44:57,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-02 11:44:57,653 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand 3 states. [2020-12-02 11:44:57,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 11:44:57,662 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2020-12-02 11:44:57,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-02 11:44:57,663 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-12-02 11:44:57,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 11:44:57,664 INFO L225 Difference]: With dead ends: 10 [2020-12-02 11:44:57,664 INFO L226 Difference]: Without dead ends: 9 [2020-12-02 11:44:57,665 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-02 11:44:57,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-12-02 11:44:57,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-12-02 11:44:57,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-12-02 11:44:57,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2020-12-02 11:44:57,668 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2020-12-02 11:44:57,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 11:44:57,668 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2020-12-02 11:44:57,669 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-02 11:44:57,669 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2020-12-02 11:44:57,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-02 11:44:57,669 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 11:44:57,670 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-02 11:44:57,670 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-02 11:44:57,670 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 11:44:57,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 11:44:57,671 INFO L82 PathProgramCache]: Analyzing trace with hash -1172611463, now seen corresponding path program 2 times [2020-12-02 11:44:57,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 11:44:57,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800962248] [2020-12-02 11:44:57,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 11:44:57,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 11:44:57,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 11:44:57,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800962248] [2020-12-02 11:44:57,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 11:44:57,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 11:44:57,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139268298] [2020-12-02 11:44:57,787 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 11:44:57,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 11:44:57,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 11:44:57,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 11:44:57,794 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 4 states. [2020-12-02 11:44:57,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 11:44:57,802 INFO L93 Difference]: Finished difference Result 5 states and 4 transitions. [2020-12-02 11:44:57,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 11:44:57,803 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-02 11:44:57,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 11:44:57,803 INFO L225 Difference]: With dead ends: 5 [2020-12-02 11:44:57,803 INFO L226 Difference]: Without dead ends: 0 [2020-12-02 11:44:57,804 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 11:44:57,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-02 11:44:57,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-02 11:44:57,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-02 11:44:57,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-02 11:44:57,804 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2020-12-02 11:44:57,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 11:44:57,805 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-02 11:44:57,805 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 11:44:57,805 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-02 11:44:57,805 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-02 11:44:57,805 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-02 11:44:57,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 11:44:57 BasicIcfg [2020-12-02 11:44:57,809 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 11:44:57,809 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 11:44:57,809 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 11:44:57,810 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 11:44:57,810 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:44:53" (3/4) ... [2020-12-02 11:44:57,814 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-02 11:44:57,821 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2020-12-02 11:44:57,826 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2020-12-02 11:44:57,827 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-12-02 11:44:57,827 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 11:44:57,827 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 11:44:57,881 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-02 11:44:57,882 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 11:44:57,883 INFO L168 Benchmark]: Toolchain (without parser) took 5631.44 ms. Allocated memory was 48.2 MB in the beginning and 86.0 MB in the end (delta: 37.7 MB). Free memory was 24.0 MB in the beginning and 60.1 MB in the end (delta: -36.1 MB). Peak memory consumption was 3.6 MB. Max. memory is 16.1 GB. [2020-12-02 11:44:57,884 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 37.7 MB. Free memory was 17.3 MB in the beginning and 17.3 MB in the end (delta: 25.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 11:44:57,884 INFO L168 Benchmark]: CACSL2BoogieTranslator took 775.84 ms. Allocated memory is still 48.2 MB. Free memory was 23.8 MB in the beginning and 28.7 MB in the end (delta: -4.9 MB). Peak memory consumption was 10.7 MB. Max. memory is 16.1 GB. [2020-12-02 11:44:57,885 INFO L168 Benchmark]: Boogie Procedure Inliner took 102.21 ms. Allocated memory is still 48.2 MB. Free memory was 28.7 MB in the beginning and 26.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 11:44:57,886 INFO L168 Benchmark]: Boogie Preprocessor took 57.88 ms. Allocated memory is still 48.2 MB. Free memory was 26.7 MB in the beginning and 25.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 11:44:57,889 INFO L168 Benchmark]: RCFGBuilder took 724.34 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 25.3 MB in the beginning and 33.2 MB in the end (delta: -7.9 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. [2020-12-02 11:44:57,891 INFO L168 Benchmark]: TraceAbstraction took 3886.13 ms. Allocated memory was 58.7 MB in the beginning and 86.0 MB in the end (delta: 27.3 MB). Free memory was 32.9 MB in the beginning and 62.2 MB in the end (delta: -29.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 11:44:57,892 INFO L168 Benchmark]: Witness Printer took 72.31 ms. Allocated memory is still 86.0 MB. Free memory was 62.2 MB in the beginning and 60.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 11:44:57,901 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 37.7 MB. Free memory was 17.3 MB in the beginning and 17.3 MB in the end (delta: 25.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 775.84 ms. Allocated memory is still 48.2 MB. Free memory was 23.8 MB in the beginning and 28.7 MB in the end (delta: -4.9 MB). Peak memory consumption was 10.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 102.21 ms. Allocated memory is still 48.2 MB. Free memory was 28.7 MB in the beginning and 26.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 57.88 ms. Allocated memory is still 48.2 MB. Free memory was 26.7 MB in the beginning and 25.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 724.34 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 25.3 MB in the beginning and 33.2 MB in the end (delta: -7.9 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3886.13 ms. Allocated memory was 58.7 MB in the beginning and 86.0 MB in the end (delta: 27.3 MB). Free memory was 32.9 MB in the beginning and 62.2 MB in the end (delta: -29.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 72.31 ms. Allocated memory is still 86.0 MB. Free memory was 62.2 MB in the beginning and 60.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 219 VarBasedMoverChecksPositive, 25 VarBasedMoverChecksNegative, 5 SemBasedMoverChecksPositive, 20 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 16 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.0s, 51 PlacesBefore, 14 PlacesAfterwards, 48 TransitionsBefore, 11 TransitionsAfterwards, 300 CoEnabledTransitionPairs, 6 FixpointIterations, 14 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 0 ChoiceCompositions, 45 TotalNumberOfCompositions, 465 MoverChecksTotal - PositiveResult [Line: 738]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 48 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.7s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.0s, HoareTripleCheckerStatistics: 20 SDtfs, 4 SDslu, 7 SDs, 0 SdLazy, 15 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 168 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...