./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-races/race-1_3-join.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 997cd7c3 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/ldv-races/race-1_3-join.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 158852c017926f5105117106d37baef2e7c75d8b ............................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-997cd7c-m [2021-09-22 14:53:56,762 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-09-22 14:53:56,763 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-09-22 14:53:56,793 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-09-22 14:53:56,795 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-09-22 14:53:56,798 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-09-22 14:53:56,799 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-09-22 14:53:56,803 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-09-22 14:53:56,805 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-09-22 14:53:56,808 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-09-22 14:53:56,809 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-09-22 14:53:56,812 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-09-22 14:53:56,812 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-09-22 14:53:56,814 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-09-22 14:53:56,815 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-09-22 14:53:56,816 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-09-22 14:53:56,817 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-09-22 14:53:56,817 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-09-22 14:53:56,820 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-09-22 14:53:56,824 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-09-22 14:53:56,825 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-09-22 14:53:56,825 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-09-22 14:53:56,827 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-09-22 14:53:56,827 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-09-22 14:53:56,832 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-09-22 14:53:56,833 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-09-22 14:53:56,833 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-09-22 14:53:56,834 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-09-22 14:53:56,834 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-09-22 14:53:56,835 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-09-22 14:53:56,835 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-09-22 14:53:56,835 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-09-22 14:53:56,836 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-09-22 14:53:56,836 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-09-22 14:53:56,836 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-09-22 14:53:56,837 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-09-22 14:53:56,837 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-09-22 14:53:56,837 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-09-22 14:53:56,837 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-09-22 14:53:56,838 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-09-22 14:53:56,838 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-09-22 14:53:56,839 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-09-22 14:53:56,855 INFO L113 SettingsManager]: Loading preferences was successful [2021-09-22 14:53:56,858 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-09-22 14:53:56,858 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-09-22 14:53:56,859 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-09-22 14:53:56,859 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-09-22 14:53:56,860 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-09-22 14:53:56,860 INFO L138 SettingsManager]: * Use SBE=true [2021-09-22 14:53:56,860 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-09-22 14:53:56,860 INFO L138 SettingsManager]: * sizeof long=4 [2021-09-22 14:53:56,861 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-09-22 14:53:56,861 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-09-22 14:53:56,861 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-09-22 14:53:56,861 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-09-22 14:53:56,861 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-09-22 14:53:56,862 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-09-22 14:53:56,862 INFO L138 SettingsManager]: * sizeof long double=12 [2021-09-22 14:53:56,862 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-09-22 14:53:56,862 INFO L138 SettingsManager]: * Use constant arrays=true [2021-09-22 14:53:56,862 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-09-22 14:53:56,862 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-09-22 14:53:56,863 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-09-22 14:53:56,863 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-09-22 14:53:56,863 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-09-22 14:53:56,863 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-09-22 14:53:56,863 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-09-22 14:53:56,863 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-09-22 14:53:56,864 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-09-22 14:53:56,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-09-22 14:53:56,864 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-09-22 14:53:56,864 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-09-22 14:53:56,864 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 158852c017926f5105117106d37baef2e7c75d8b [2021-09-22 14:53:57,110 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-09-22 14:53:57,124 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-09-22 14:53:57,126 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-09-22 14:53:57,126 INFO L271 PluginConnector]: Initializing CDTParser... [2021-09-22 14:53:57,130 INFO L275 PluginConnector]: CDTParser initialized [2021-09-22 14:53:57,130 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-races/race-1_3-join.i [2021-09-22 14:53:57,180 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a5854c9c/ffc74e9f0a964ece89fa8ae0bfec264a/FLAG414cc40ea [2021-09-22 14:53:57,613 INFO L306 CDTParser]: Found 1 translation units. [2021-09-22 14:53:57,613 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-races/race-1_3-join.i [2021-09-22 14:53:57,630 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a5854c9c/ffc74e9f0a964ece89fa8ae0bfec264a/FLAG414cc40ea [2021-09-22 14:53:57,907 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a5854c9c/ffc74e9f0a964ece89fa8ae0bfec264a [2021-09-22 14:53:57,908 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-09-22 14:53:57,909 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-09-22 14:53:57,910 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-09-22 14:53:57,910 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-09-22 14:53:57,913 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-09-22 14:53:57,914 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.09 02:53:57" (1/1) ... [2021-09-22 14:53:57,916 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@535dbfcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:53:57, skipping insertion in model container [2021-09-22 14:53:57,916 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.09 02:53:57" (1/1) ... [2021-09-22 14:53:57,920 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-09-22 14:53:57,959 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-09-22 14:53:58,346 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-races/race-1_3-join.i[76153,76166] [2021-09-22 14:53:58,361 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-09-22 14:53:58,368 INFO L203 MainTranslator]: Completed pre-run [2021-09-22 14:53:58,392 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-races/race-1_3-join.i[76153,76166] [2021-09-22 14:53:58,396 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-09-22 14:53:58,484 INFO L208 MainTranslator]: Completed translation [2021-09-22 14:53:58,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:53:58 WrapperNode [2021-09-22 14:53:58,485 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-09-22 14:53:58,485 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-09-22 14:53:58,486 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-09-22 14:53:58,486 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-09-22 14:53:58,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:53:58" (1/1) ... [2021-09-22 14:53:58,510 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:53:58" (1/1) ... [2021-09-22 14:53:58,528 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-09-22 14:53:58,529 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-09-22 14:53:58,529 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-09-22 14:53:58,529 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-09-22 14:53:58,534 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:53:58" (1/1) ... [2021-09-22 14:53:58,534 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:53:58" (1/1) ... [2021-09-22 14:53:58,544 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:53:58" (1/1) ... [2021-09-22 14:53:58,544 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:53:58" (1/1) ... [2021-09-22 14:53:58,551 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:53:58" (1/1) ... [2021-09-22 14:53:58,552 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:53:58" (1/1) ... [2021-09-22 14:53:58,555 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:53:58" (1/1) ... [2021-09-22 14:53:58,561 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-09-22 14:53:58,562 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-09-22 14:53:58,562 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-09-22 14:53:58,562 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-09-22 14:53:58,562 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:53:58" (1/1) ... [2021-09-22 14:53:58,574 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-09-22 14:53:58,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-09-22 14:53:58,598 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) [2021-09-22 14:53:58,600 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 [2021-09-22 14:53:58,624 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-09-22 14:53:58,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-09-22 14:53:58,625 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-09-22 14:53:58,625 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-09-22 14:53:58,626 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-09-22 14:53:58,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-09-22 14:53:58,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-09-22 14:53:58,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-09-22 14:53:58,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-09-22 14:53:58,626 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-09-22 14:53:58,627 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-09-22 14:53:58,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-09-22 14:53:58,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-09-22 14:53:58,634 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-09-22 14:53:59,070 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-09-22 14:53:59,070 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-09-22 14:53:59,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.09 02:53:59 BoogieIcfgContainer [2021-09-22 14:53:59,072 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-09-22 14:53:59,073 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-09-22 14:53:59,073 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-09-22 14:53:59,075 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-09-22 14:53:59,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.09 02:53:57" (1/3) ... [2021-09-22 14:53:59,076 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47dcbc42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.09 02:53:59, skipping insertion in model container [2021-09-22 14:53:59,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:53:58" (2/3) ... [2021-09-22 14:53:59,076 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47dcbc42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.09 02:53:59, skipping insertion in model container [2021-09-22 14:53:59,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.09 02:53:59" (3/3) ... [2021-09-22 14:53:59,077 INFO L111 eAbstractionObserver]: Analyzing ICFG race-1_3-join.i [2021-09-22 14:53:59,080 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-09-22 14:53:59,080 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-09-22 14:53:59,080 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-09-22 14:53:59,081 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-09-22 14:53:59,102 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:53:59,103 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:53:59,103 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:53:59,103 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:53:59,103 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:53:59,103 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:53:59,103 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:53:59,103 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:53:59,104 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:53:59,104 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:53:59,104 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:53:59,105 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:53:59,105 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:53:59,105 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:53:59,105 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:53:59,105 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:53:59,112 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:53:59,112 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:53:59,112 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:53:59,112 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:53:59,113 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:53:59,118 INFO L148 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-09-22 14:53:59,143 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-09-22 14:53:59,147 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, 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, mLoopAccelerationTechnique=FAST_UPR [2021-09-22 14:53:59,147 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-09-22 14:53:59,155 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-09-22 14:53:59,160 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 89 places, 90 transitions, 188 flow [2021-09-22 14:53:59,162 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 89 places, 90 transitions, 188 flow [2021-09-22 14:53:59,163 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 89 places, 90 transitions, 188 flow [2021-09-22 14:53:59,185 INFO L129 PetriNetUnfolder]: 4/104 cut-off events. [2021-09-22 14:53:59,185 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-09-22 14:53:59,186 INFO L84 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 104 events. 4/104 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 152 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 63. Up to 3 conditions per place. [2021-09-22 14:53:59,188 INFO L116 LiptonReduction]: Number of co-enabled transitions 252 [2021-09-22 14:54:03,414 INFO L131 LiptonReduction]: Checked pairs total: 278 [2021-09-22 14:54:03,414 INFO L133 LiptonReduction]: Total number of compositions: 102 [2021-09-22 14:54:03,419 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 17 places, 15 transitions, 38 flow [2021-09-22 14:54:03,425 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 22 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 21 states have internal predecessors, (26), 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) [2021-09-22 14:54:03,426 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 21 states have internal predecessors, (26), 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) [2021-09-22 14:54:03,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-09-22 14:54:03,429 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:54:03,429 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-09-22 14:54:03,429 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-09-22 14:54:03,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:54:03,432 INFO L82 PathProgramCache]: Analyzing trace with hash 367, now seen corresponding path program 1 times [2021-09-22 14:54:03,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:54:03,438 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689614427] [2021-09-22 14:54:03,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:54:03,439 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:54:03,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:54:03,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:54:03,632 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:54:03,632 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689614427] [2021-09-22 14:54:03,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689614427] provided 1 perfect and 0 imperfect interpolant sequences [2021-09-22 14:54:03,633 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-09-22 14:54:03,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2021-09-22 14:54:03,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534970585] [2021-09-22 14:54:03,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-09-22 14:54:03,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:54:03,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-09-22 14:54:03,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-09-22 14:54:03,647 INFO L87 Difference]: Start difference. First operand has 22 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 21 states have internal predecessors, (26), 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) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2021-09-22 14:54:03,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:54:03,653 INFO L93 Difference]: Finished difference Result 19 states and 23 transitions. [2021-09-22 14:54:03,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-09-22 14:54:03,654 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) Word has length 1 [2021-09-22 14:54:03,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:54:03,658 INFO L225 Difference]: With dead ends: 19 [2021-09-22 14:54:03,659 INFO L226 Difference]: Without dead ends: 13 [2021-09-22 14:54:03,660 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-09-22 14:54:03,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-09-22 14:54:03,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-09-22 14:54:03,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 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) [2021-09-22 14:54:03,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2021-09-22 14:54:03,677 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 1 [2021-09-22 14:54:03,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:54:03,677 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2021-09-22 14:54:03,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2021-09-22 14:54:03,677 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2021-09-22 14:54:03,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-09-22 14:54:03,678 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:54:03,678 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-09-22 14:54:03,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-09-22 14:54:03,678 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-09-22 14:54:03,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:54:03,679 INFO L82 PathProgramCache]: Analyzing trace with hash 363488, now seen corresponding path program 1 times [2021-09-22 14:54:03,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:54:03,679 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063555323] [2021-09-22 14:54:03,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:54:03,680 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:54:03,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:54:03,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:54:03,772 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:54:03,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063555323] [2021-09-22 14:54:03,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063555323] provided 1 perfect and 0 imperfect interpolant sequences [2021-09-22 14:54:03,773 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-09-22 14:54:03,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-09-22 14:54:03,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772128058] [2021-09-22 14:54:03,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-09-22 14:54:03,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:54:03,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-09-22 14:54:03,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-09-22 14:54:03,781 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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) [2021-09-22 14:54:03,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:54:03,791 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2021-09-22 14:54:03,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-09-22 14:54:03,792 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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) Word has length 3 [2021-09-22 14:54:03,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:54:03,792 INFO L225 Difference]: With dead ends: 11 [2021-09-22 14:54:03,792 INFO L226 Difference]: Without dead ends: 10 [2021-09-22 14:54:03,793 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-09-22 14:54:03,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-09-22 14:54:03,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-09-22 14:54:03,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 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) [2021-09-22 14:54:03,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2021-09-22 14:54:03,795 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 3 [2021-09-22 14:54:03,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:54:03,795 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2021-09-22 14:54:03,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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) [2021-09-22 14:54:03,796 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2021-09-22 14:54:03,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-09-22 14:54:03,796 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:54:03,796 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-09-22 14:54:03,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-09-22 14:54:03,797 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-09-22 14:54:03,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:54:03,797 INFO L82 PathProgramCache]: Analyzing trace with hash 348068664, now seen corresponding path program 1 times [2021-09-22 14:54:03,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:54:03,799 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617576942] [2021-09-22 14:54:03,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:54:03,799 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:54:03,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:54:03,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:54:03,856 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:54:03,856 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617576942] [2021-09-22 14:54:03,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617576942] provided 1 perfect and 0 imperfect interpolant sequences [2021-09-22 14:54:03,856 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-09-22 14:54:03,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-09-22 14:54:03,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315995936] [2021-09-22 14:54:03,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-09-22 14:54:03,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:54:03,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-09-22 14:54:03,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-09-22 14:54:03,858 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-09-22 14:54:03,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:54:03,864 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2021-09-22 14:54:03,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-09-22 14:54:03,864 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) Word has length 5 [2021-09-22 14:54:03,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:54:03,865 INFO L225 Difference]: With dead ends: 10 [2021-09-22 14:54:03,865 INFO L226 Difference]: Without dead ends: 7 [2021-09-22 14:54:03,865 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-09-22 14:54:03,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-09-22 14:54:03,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-09-22 14:54:03,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 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) [2021-09-22 14:54:03,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2021-09-22 14:54:03,866 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 5 [2021-09-22 14:54:03,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:54:03,867 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2021-09-22 14:54:03,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-09-22 14:54:03,867 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2021-09-22 14:54:03,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-09-22 14:54:03,867 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:54:03,867 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-09-22 14:54:03,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-09-22 14:54:03,868 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-09-22 14:54:03,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:54:03,868 INFO L82 PathProgramCache]: Analyzing trace with hash -2094769695, now seen corresponding path program 1 times [2021-09-22 14:54:03,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:54:03,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021485195] [2021-09-22 14:54:03,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:54:03,869 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:54:03,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-09-22 14:54:03,891 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-09-22 14:54:03,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-09-22 14:54:03,922 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-09-22 14:54:03,923 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-09-22 14:54:03,923 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-09-22 14:54:03,924 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-09-22 14:54:03,925 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-09-22 14:54:03,925 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-09-22 14:54:03,925 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION [2021-09-22 14:54:03,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-09-22 14:54:03,929 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-09-22 14:54:03,929 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-09-22 14:54:03,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.09 02:54:03 BasicIcfg [2021-09-22 14:54:03,942 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-09-22 14:54:03,942 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-09-22 14:54:03,942 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-09-22 14:54:03,942 INFO L275 PluginConnector]: Witness Printer initialized [2021-09-22 14:54:03,943 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.09 02:53:59" (3/4) ... [2021-09-22 14:54:03,944 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-09-22 14:54:03,965 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-09-22 14:54:03,966 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-09-22 14:54:03,967 INFO L168 Benchmark]: Toolchain (without parser) took 6056.76 ms. Allocated memory was 60.8 MB in the beginning and 107.0 MB in the end (delta: 46.1 MB). Free memory was 38.7 MB in the beginning and 52.1 MB in the end (delta: -13.3 MB). Peak memory consumption was 32.1 MB. Max. memory is 16.1 GB. [2021-09-22 14:54:03,967 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 60.8 MB. Free memory is still 43.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-09-22 14:54:03,967 INFO L168 Benchmark]: CACSL2BoogieTranslator took 574.78 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 38.6 MB in the beginning and 48.8 MB in the end (delta: -10.2 MB). Peak memory consumption was 24.4 MB. Max. memory is 16.1 GB. [2021-09-22 14:54:03,968 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.11 ms. Allocated memory is still 73.4 MB. Free memory was 48.8 MB in the beginning and 45.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-09-22 14:54:03,968 INFO L168 Benchmark]: Boogie Preprocessor took 32.26 ms. Allocated memory is still 73.4 MB. Free memory was 45.8 MB in the beginning and 43.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-09-22 14:54:03,968 INFO L168 Benchmark]: RCFGBuilder took 510.14 ms. Allocated memory is still 73.4 MB. Free memory was 43.4 MB in the beginning and 44.7 MB in the end (delta: -1.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-09-22 14:54:03,968 INFO L168 Benchmark]: TraceAbstraction took 4868.80 ms. Allocated memory was 73.4 MB in the beginning and 107.0 MB in the end (delta: 33.6 MB). Free memory was 44.3 MB in the beginning and 54.6 MB in the end (delta: -10.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 16.1 GB. [2021-09-22 14:54:03,969 INFO L168 Benchmark]: Witness Printer took 23.56 ms. Allocated memory is still 107.0 MB. Free memory was 54.6 MB in the beginning and 52.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-09-22 14:54:03,970 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 60.8 MB. Free memory is still 43.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 574.78 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 38.6 MB in the beginning and 48.8 MB in the end (delta: -10.2 MB). Peak memory consumption was 24.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.11 ms. Allocated memory is still 73.4 MB. Free memory was 48.8 MB in the beginning and 45.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.26 ms. Allocated memory is still 73.4 MB. Free memory was 45.8 MB in the beginning and 43.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 510.14 ms. Allocated memory is still 73.4 MB. Free memory was 43.4 MB in the beginning and 44.7 MB in the end (delta: -1.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4868.80 ms. Allocated memory was 73.4 MB in the beginning and 107.0 MB in the end (delta: 33.6 MB). Free memory was 44.3 MB in the beginning and 54.6 MB in the end (delta: -10.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 16.1 GB. * Witness Printer took 23.56 ms. Allocated memory is still 107.0 MB. Free memory was 54.6 MB in the beginning and 52.1 MB in the end (delta: 2.6 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 Lipton Reduction Statistics: ReductionTime: 4252.5ms, 89 PlacesBefore, 17 PlacesAfterwards, 90 TransitionsBefore, 15 TransitionsAfterwards, 252 CoEnabledTransitionPairs, 7 FixpointIterations, 69 TrivialSequentialCompositions, 19 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 6 ConcurrentYvCompositions, 3 ChoiceCompositions, 102 TotalNumberOfCompositions, 278 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 254, positive: 228, positive conditional: 0, positive unconditional: 228, negative: 26, negative conditional: 0, negative unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 191, positive: 182, positive conditional: 0, positive unconditional: 182, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 191, positive: 181, positive conditional: 0, positive unconditional: 181, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 10, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 27, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 26, negative conditional: 0, negative unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 254, positive: 46, positive conditional: 0, positive unconditional: 46, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 191, unknown conditional: 0, unknown unconditional: 191] , Statistics on independence cache: Total cache size (in pairs): 6, Positive cache size: 2, Positive conditional cache size: 0, Positive unconditional cache size: 2, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 1695]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1696] 0 pthread_t t1; [L1697] 0 pthread_mutex_t mutex; [L1698] 0 int pdev; [L1709] 0 pdev = 1 [L1695] COND FALSE 0 !(!expression) [L1711] COND TRUE 0 __VERIFIER_nondet_int() [L1712] FCALL, FORK 0 pthread_create(&t1, ((void *)0), thread1, ((void *)0)) VAL [arg={0:0}, mutex={7:0}, pdev=1, t1={5:0}] [L1713] 0 return 0; [L1734] COND FALSE 0 !(module_init()!=0) [L1721] 0 void *status; [L1723] 0 pdev = 4 VAL [arg={0:0}, mutex={7:0}, pdev=4, t1={5:0}] [L1702] 1 pdev = 6 [L1705] 1 return 0; [L1695] COND TRUE 0 !expression [L1695] 0 reach_error() VAL [\result={0:0}, arg={0:0}, arg={0:0}, mutex={7:0}, pdev=6, t1={5:0}] - UnprovableResult [Line: 1695]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1695]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1695]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1712]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 95 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 4785.0ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 4.3ms, AutomataDifference: 47.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 4277.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 24 SDtfs, 0 SDslu, 5 SDs, 0 SdLazy, 7 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 10.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 12.0ms AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 16.2ms SsaConstructionTime, 60.3ms SatisfiabilityAnalysisTime, 137.3ms InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 12 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 incorrect! [2021-09-22 14:54:03,999 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...