./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/locks/test_locks_5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 906a4fb5 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/locks/test_locks_5.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-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(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d28fd50bd3f7e49bee026aec860ad9015a4fdfba .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.1.25-906a4fb [2020-10-19 18:54:13,452 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:54:13,454 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:54:13,479 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:54:13,479 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:54:13,480 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:54:13,482 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:54:13,484 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:54:13,485 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:54:13,486 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:54:13,488 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:54:13,489 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:54:13,489 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:54:13,490 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:54:13,491 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:54:13,493 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:54:13,494 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:54:13,495 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:54:13,497 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:54:13,499 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:54:13,500 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:54:13,501 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:54:13,503 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:54:13,503 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:54:13,506 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:54:13,507 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:54:13,507 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:54:13,508 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:54:13,508 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:54:13,509 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:54:13,510 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:54:13,511 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:54:13,511 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:54:13,512 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:54:13,514 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:54:13,514 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:54:13,515 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:54:13,515 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:54:13,515 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:54:13,516 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:54:13,517 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:54:13,518 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-10-19 18:54:13,550 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:54:13,553 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:54:13,555 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:54:13,556 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:54:13,556 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:54:13,556 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-19 18:54:13,557 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-19 18:54:13,557 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-19 18:54:13,557 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-19 18:54:13,557 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-19 18:54:13,558 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-19 18:54:13,559 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:54:13,559 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 18:54:13,559 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:54:13,560 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:54:13,561 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 18:54:13,561 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:54:13,561 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-19 18:54:13,561 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-19 18:54:13,562 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-19 18:54:13,562 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 18:54:13,562 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 18:54:13,563 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-19 18:54:13,563 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:54:13,563 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-19 18:54:13,563 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:54:13,564 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:54:13,564 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-19 18:54:13,564 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:54:13,565 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 18:54:13,565 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:54:13,565 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-19 18:54:13,566 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-19 18:54:13,567 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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(F end) ) 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 -> d28fd50bd3f7e49bee026aec860ad9015a4fdfba [2020-10-19 18:54:13,924 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:54:13,936 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:54:13,940 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:54:13,942 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:54:13,942 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:54:13,943 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/locks/test_locks_5.c [2020-10-19 18:54:14,008 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2cce8844/05c5c73895dd4bbabca64e801b5d43ea/FLAG7fce9771f [2020-10-19 18:54:14,417 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:54:14,417 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_5.c [2020-10-19 18:54:14,426 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2cce8844/05c5c73895dd4bbabca64e801b5d43ea/FLAG7fce9771f [2020-10-19 18:54:14,832 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2cce8844/05c5c73895dd4bbabca64e801b5d43ea [2020-10-19 18:54:14,836 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:54:14,844 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 18:54:14,848 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:54:14,848 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:54:14,852 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:54:14,853 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:54:14" (1/1) ... [2020-10-19 18:54:14,856 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@435a68c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:54:14, skipping insertion in model container [2020-10-19 18:54:14,857 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:54:14" (1/1) ... [2020-10-19 18:54:14,865 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:54:14,884 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:54:15,113 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:54:15,127 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 18:54:15,164 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:54:15,184 INFO L208 MainTranslator]: Completed translation [2020-10-19 18:54:15,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:54:15 WrapperNode [2020-10-19 18:54:15,186 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:54:15,188 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 18:54:15,188 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 18:54:15,188 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 18:54:15,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:54:15" (1/1) ... [2020-10-19 18:54:15,261 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:54:15" (1/1) ... [2020-10-19 18:54:15,288 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 18:54:15,288 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 18:54:15,288 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 18:54:15,289 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 18:54:15,296 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:54:15" (1/1) ... [2020-10-19 18:54:15,297 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:54:15" (1/1) ... [2020-10-19 18:54:15,298 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:54:15" (1/1) ... [2020-10-19 18:54:15,298 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:54:15" (1/1) ... [2020-10-19 18:54:15,302 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:54:15" (1/1) ... [2020-10-19 18:54:15,306 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:54:15" (1/1) ... [2020-10-19 18:54:15,308 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:54:15" (1/1) ... [2020-10-19 18:54:15,310 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 18:54:15,311 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 18:54:15,311 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 18:54:15,311 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 18:54:15,312 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:54:15" (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:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:54:15,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 18:54:15,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 18:54:15,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 18:54:15,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 18:54:15,624 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 18:54:15,624 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-10-19 18:54:15,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:54:15 BoogieIcfgContainer [2020-10-19 18:54:15,632 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 18:54:15,633 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-19 18:54:15,633 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-19 18:54:15,640 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-19 18:54:15,641 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 18:54:15,641 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.10 06:54:14" (1/3) ... [2020-10-19 18:54:15,642 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@d04bfc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.10 06:54:15, skipping insertion in model container [2020-10-19 18:54:15,642 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 18:54:15,643 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:54:15" (2/3) ... [2020-10-19 18:54:15,643 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@d04bfc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.10 06:54:15, skipping insertion in model container [2020-10-19 18:54:15,643 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 18:54:15,643 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:54:15" (3/3) ... [2020-10-19 18:54:15,645 INFO L373 chiAutomizerObserver]: Analyzing ICFG test_locks_5.c [2020-10-19 18:54:15,705 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-19 18:54:15,705 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-19 18:54:15,705 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-19 18:54:15,705 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 18:54:15,705 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 18:54:15,706 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-19 18:54:15,706 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 18:54:15,706 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-19 18:54:15,724 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states. [2020-10-19 18:54:15,749 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 17 [2020-10-19 18:54:15,749 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:54:15,749 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:54:15,757 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-10-19 18:54:15,757 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:54:15,757 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-19 18:54:15,757 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states. [2020-10-19 18:54:15,760 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 17 [2020-10-19 18:54:15,760 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:54:15,761 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:54:15,761 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-10-19 18:54:15,761 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:54:15,771 INFO L794 eck$LassoCheckResult]: Stem: 24#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(15);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 7#L-1true havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_~p1~0, main_~lk1~0, main_~p2~0, main_~lk2~0, main_~p3~0, main_~lk3~0, main_~p4~0, main_~lk4~0, main_~p5~0, main_~lk5~0, main_~cond~0;main_~p1~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~lk1~0;main_~p2~0 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~lk2~0;main_~p3~0 := main_#t~nondet9;havoc main_#t~nondet9;havoc main_~lk3~0;main_~p4~0 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~lk4~0;main_~p5~0 := main_#t~nondet11;havoc main_#t~nondet11;havoc main_~lk5~0;havoc main_~cond~0; 21#L85-1true [2020-10-19 18:54:15,771 INFO L796 eck$LassoCheckResult]: Loop: 21#L85-1true assume !false;main_~cond~0 := main_#t~nondet12;havoc main_#t~nondet12; 18#L28true assume !(0 == main_~cond~0);main_~lk1~0 := 0;main_~lk2~0 := 0;main_~lk3~0 := 0;main_~lk4~0 := 0;main_~lk5~0 := 0; 9#L43true assume 0 != main_~p1~0;main_~lk1~0 := 1; 20#L43-2true assume 0 != main_~p2~0;main_~lk2~0 := 1; 14#L47-1true assume !(0 != main_~p3~0); 6#L51-1true assume 0 != main_~p4~0;main_~lk4~0 := 1; 25#L55-1true assume 0 != main_~p5~0;main_~lk5~0 := 1; 15#L59-1true assume !(0 != main_~p1~0); 8#L65-1true assume !(0 != main_~p2~0); 16#L70-1true assume !(0 != main_~p3~0); 22#L75-1true assume !(0 != main_~p4~0); 3#L80-1true assume !(0 != main_~p5~0); 21#L85-1true [2020-10-19 18:54:15,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:54:15,778 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2020-10-19 18:54:15,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:54:15,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187090917] [2020-10-19 18:54:15,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:54:15,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:54:15,904 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:54:15,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:54:15,920 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:54:15,942 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:54:15,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:54:15,944 INFO L82 PathProgramCache]: Analyzing trace with hash -2089480461, now seen corresponding path program 1 times [2020-10-19 18:54:15,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:54:15,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183255668] [2020-10-19 18:54:15,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:54:15,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:54:16,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:54:16,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183255668] [2020-10-19 18:54:16,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:54:16,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 18:54:16,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885283346] [2020-10-19 18:54:16,025 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-10-19 18:54:16,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:54:16,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:54:16,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:54:16,043 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 3 states. [2020-10-19 18:54:16,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:54:16,083 INFO L93 Difference]: Finished difference Result 45 states and 70 transitions. [2020-10-19 18:54:16,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:54:16,086 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 70 transitions. [2020-10-19 18:54:16,090 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 33 [2020-10-19 18:54:16,094 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 35 states and 53 transitions. [2020-10-19 18:54:16,095 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 35 [2020-10-19 18:54:16,095 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2020-10-19 18:54:16,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 53 transitions. [2020-10-19 18:54:16,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-19 18:54:16,097 INFO L691 BuchiCegarLoop]: Abstraction has 35 states and 53 transitions. [2020-10-19 18:54:16,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 53 transitions. [2020-10-19 18:54:16,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-10-19 18:54:16,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-19 18:54:16,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 53 transitions. [2020-10-19 18:54:16,124 INFO L714 BuchiCegarLoop]: Abstraction has 35 states and 53 transitions. [2020-10-19 18:54:16,124 INFO L594 BuchiCegarLoop]: Abstraction has 35 states and 53 transitions. [2020-10-19 18:54:16,124 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-19 18:54:16,124 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 53 transitions. [2020-10-19 18:54:16,126 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 33 [2020-10-19 18:54:16,126 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:54:16,126 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:54:16,127 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-10-19 18:54:16,127 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:54:16,127 INFO L794 eck$LassoCheckResult]: Stem: 97#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(15);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 96#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_~p1~0, main_~lk1~0, main_~p2~0, main_~lk2~0, main_~p3~0, main_~lk3~0, main_~p4~0, main_~lk4~0, main_~p5~0, main_~lk5~0, main_~cond~0;main_~p1~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~lk1~0;main_~p2~0 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~lk2~0;main_~p3~0 := main_#t~nondet9;havoc main_#t~nondet9;havoc main_~lk3~0;main_~p4~0 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~lk4~0;main_~p5~0 := main_#t~nondet11;havoc main_#t~nondet11;havoc main_~lk5~0;havoc main_~cond~0; 80#L85-1 [2020-10-19 18:54:16,127 INFO L796 eck$LassoCheckResult]: Loop: 80#L85-1 assume !false;main_~cond~0 := main_#t~nondet12;havoc main_#t~nondet12; 89#L28 assume !(0 == main_~cond~0);main_~lk1~0 := 0;main_~lk2~0 := 0;main_~lk3~0 := 0;main_~lk4~0 := 0;main_~lk5~0 := 0; 90#L43 assume !(0 != main_~p1~0); 105#L43-2 assume 0 != main_~p2~0;main_~lk2~0 := 1; 101#L47-1 assume !(0 != main_~p3~0); 92#L51-1 assume 0 != main_~p4~0;main_~lk4~0 := 1; 93#L55-1 assume 0 != main_~p5~0;main_~lk5~0 := 1; 102#L59-1 assume !(0 != main_~p1~0); 103#L65-1 assume !(0 != main_~p2~0); 112#L70-1 assume !(0 != main_~p3~0); 110#L75-1 assume !(0 != main_~p4~0); 79#L80-1 assume !(0 != main_~p5~0); 80#L85-1 [2020-10-19 18:54:16,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:54:16,128 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2020-10-19 18:54:16,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:54:16,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546005759] [2020-10-19 18:54:16,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:54:16,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:54:16,142 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:54:16,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:54:16,154 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:54:16,162 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:54:16,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:54:16,163 INFO L82 PathProgramCache]: Analyzing trace with hash 1812459825, now seen corresponding path program 1 times [2020-10-19 18:54:16,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:54:16,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177664331] [2020-10-19 18:54:16,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:54:16,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:54:16,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:54:16,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177664331] [2020-10-19 18:54:16,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:54:16,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 18:54:16,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907439300] [2020-10-19 18:54:16,189 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-10-19 18:54:16,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:54:16,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:54:16,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:54:16,191 INFO L87 Difference]: Start difference. First operand 35 states and 53 transitions. cyclomatic complexity: 20 Second operand 3 states. [2020-10-19 18:54:16,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:54:16,221 INFO L93 Difference]: Finished difference Result 66 states and 98 transitions. [2020-10-19 18:54:16,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:54:16,222 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 66 states and 98 transitions. [2020-10-19 18:54:16,225 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 64 [2020-10-19 18:54:16,227 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 66 states to 66 states and 98 transitions. [2020-10-19 18:54:16,227 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 66 [2020-10-19 18:54:16,227 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 66 [2020-10-19 18:54:16,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 98 transitions. [2020-10-19 18:54:16,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-19 18:54:16,228 INFO L691 BuchiCegarLoop]: Abstraction has 66 states and 98 transitions. [2020-10-19 18:54:16,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states and 98 transitions. [2020-10-19 18:54:16,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-10-19 18:54:16,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-19 18:54:16,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 98 transitions. [2020-10-19 18:54:16,236 INFO L714 BuchiCegarLoop]: Abstraction has 66 states and 98 transitions. [2020-10-19 18:54:16,236 INFO L594 BuchiCegarLoop]: Abstraction has 66 states and 98 transitions. [2020-10-19 18:54:16,236 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-10-19 18:54:16,236 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 66 states and 98 transitions. [2020-10-19 18:54:16,238 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 64 [2020-10-19 18:54:16,239 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:54:16,239 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:54:16,239 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-10-19 18:54:16,239 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:54:16,240 INFO L794 eck$LassoCheckResult]: Stem: 207#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(15);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 204#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_~p1~0, main_~lk1~0, main_~p2~0, main_~lk2~0, main_~p3~0, main_~lk3~0, main_~p4~0, main_~lk4~0, main_~p5~0, main_~lk5~0, main_~cond~0;main_~p1~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~lk1~0;main_~p2~0 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~lk2~0;main_~p3~0 := main_#t~nondet9;havoc main_#t~nondet9;havoc main_~lk3~0;main_~p4~0 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~lk4~0;main_~p5~0 := main_#t~nondet11;havoc main_#t~nondet11;havoc main_~lk5~0;havoc main_~cond~0; 205#L85-1 [2020-10-19 18:54:16,240 INFO L796 eck$LassoCheckResult]: Loop: 205#L85-1 assume !false;main_~cond~0 := main_#t~nondet12;havoc main_#t~nondet12; 230#L28 assume !(0 == main_~cond~0);main_~lk1~0 := 0;main_~lk2~0 := 0;main_~lk3~0 := 0;main_~lk4~0 := 0;main_~lk5~0 := 0; 227#L43 assume !(0 != main_~p1~0); 225#L43-2 assume !(0 != main_~p2~0); 224#L47-1 assume !(0 != main_~p3~0); 200#L51-1 assume 0 != main_~p4~0;main_~lk4~0 := 1; 201#L55-1 assume 0 != main_~p5~0;main_~lk5~0 := 1; 220#L59-1 assume !(0 != main_~p1~0); 212#L65-1 assume !(0 != main_~p2~0); 191#L70-1 assume !(0 != main_~p3~0); 193#L75-1 assume !(0 != main_~p4~0); 195#L80-1 assume !(0 != main_~p5~0); 205#L85-1 [2020-10-19 18:54:16,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:54:16,240 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2020-10-19 18:54:16,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:54:16,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274951175] [2020-10-19 18:54:16,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:54:16,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:54:16,255 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:54:16,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:54:16,265 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:54:16,270 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:54:16,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:54:16,270 INFO L82 PathProgramCache]: Analyzing trace with hash -1802449101, now seen corresponding path program 1 times [2020-10-19 18:54:16,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:54:16,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41518583] [2020-10-19 18:54:16,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:54:16,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:54:16,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:54:16,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41518583] [2020-10-19 18:54:16,291 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:54:16,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 18:54:16,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002846785] [2020-10-19 18:54:16,291 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-10-19 18:54:16,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:54:16,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:54:16,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:54:16,292 INFO L87 Difference]: Start difference. First operand 66 states and 98 transitions. cyclomatic complexity: 36 Second operand 3 states. [2020-10-19 18:54:16,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:54:16,311 INFO L93 Difference]: Finished difference Result 126 states and 182 transitions. [2020-10-19 18:54:16,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:54:16,312 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 126 states and 182 transitions. [2020-10-19 18:54:16,316 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 124 [2020-10-19 18:54:16,318 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 126 states to 126 states and 182 transitions. [2020-10-19 18:54:16,319 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 126 [2020-10-19 18:54:16,319 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 126 [2020-10-19 18:54:16,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 126 states and 182 transitions. [2020-10-19 18:54:16,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-19 18:54:16,321 INFO L691 BuchiCegarLoop]: Abstraction has 126 states and 182 transitions. [2020-10-19 18:54:16,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states and 182 transitions. [2020-10-19 18:54:16,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2020-10-19 18:54:16,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-19 18:54:16,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 182 transitions. [2020-10-19 18:54:16,333 INFO L714 BuchiCegarLoop]: Abstraction has 126 states and 182 transitions. [2020-10-19 18:54:16,333 INFO L594 BuchiCegarLoop]: Abstraction has 126 states and 182 transitions. [2020-10-19 18:54:16,333 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-10-19 18:54:16,333 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 126 states and 182 transitions. [2020-10-19 18:54:16,336 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 124 [2020-10-19 18:54:16,336 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:54:16,336 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:54:16,337 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-10-19 18:54:16,337 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:54:16,337 INFO L794 eck$LassoCheckResult]: Stem: 404#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(15);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 402#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_~p1~0, main_~lk1~0, main_~p2~0, main_~lk2~0, main_~p3~0, main_~lk3~0, main_~p4~0, main_~lk4~0, main_~p5~0, main_~lk5~0, main_~cond~0;main_~p1~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~lk1~0;main_~p2~0 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~lk2~0;main_~p3~0 := main_#t~nondet9;havoc main_#t~nondet9;havoc main_~lk3~0;main_~p4~0 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~lk4~0;main_~p5~0 := main_#t~nondet11;havoc main_#t~nondet11;havoc main_~lk5~0;havoc main_~cond~0; 403#L85-1 [2020-10-19 18:54:16,337 INFO L796 eck$LassoCheckResult]: Loop: 403#L85-1 assume !false;main_~cond~0 := main_#t~nondet12;havoc main_#t~nondet12; 424#L28 assume !(0 == main_~cond~0);main_~lk1~0 := 0;main_~lk2~0 := 0;main_~lk3~0 := 0;main_~lk4~0 := 0;main_~lk5~0 := 0; 421#L43 assume !(0 != main_~p1~0); 422#L43-2 assume !(0 != main_~p2~0); 451#L47-1 assume !(0 != main_~p3~0); 447#L51-1 assume !(0 != main_~p4~0); 445#L55-1 assume 0 != main_~p5~0;main_~lk5~0 := 1; 443#L59-1 assume !(0 != main_~p1~0); 440#L65-1 assume !(0 != main_~p2~0); 437#L70-1 assume !(0 != main_~p3~0); 432#L75-1 assume !(0 != main_~p4~0); 429#L80-1 assume !(0 != main_~p5~0); 403#L85-1 [2020-10-19 18:54:16,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:54:16,338 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 4 times [2020-10-19 18:54:16,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:54:16,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236422294] [2020-10-19 18:54:16,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:54:16,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:54:16,350 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:54:16,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:54:16,362 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:54:16,373 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:54:16,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:54:16,374 INFO L82 PathProgramCache]: Analyzing trace with hash -27441739, now seen corresponding path program 1 times [2020-10-19 18:54:16,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:54:16,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847111486] [2020-10-19 18:54:16,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:54:16,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:54:16,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:54:16,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847111486] [2020-10-19 18:54:16,396 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:54:16,397 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-19 18:54:16,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235772887] [2020-10-19 18:54:16,397 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-10-19 18:54:16,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:54:16,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:54:16,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:54:16,398 INFO L87 Difference]: Start difference. First operand 126 states and 182 transitions. cyclomatic complexity: 64 Second operand 3 states. [2020-10-19 18:54:16,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:54:16,423 INFO L93 Difference]: Finished difference Result 242 states and 338 transitions. [2020-10-19 18:54:16,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:54:16,424 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 242 states and 338 transitions. [2020-10-19 18:54:16,428 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 240 [2020-10-19 18:54:16,431 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 242 states to 242 states and 338 transitions. [2020-10-19 18:54:16,431 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 242 [2020-10-19 18:54:16,432 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 242 [2020-10-19 18:54:16,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 242 states and 338 transitions. [2020-10-19 18:54:16,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-19 18:54:16,434 INFO L691 BuchiCegarLoop]: Abstraction has 242 states and 338 transitions. [2020-10-19 18:54:16,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states and 338 transitions. [2020-10-19 18:54:16,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2020-10-19 18:54:16,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-10-19 18:54:16,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 338 transitions. [2020-10-19 18:54:16,472 INFO L714 BuchiCegarLoop]: Abstraction has 242 states and 338 transitions. [2020-10-19 18:54:16,472 INFO L594 BuchiCegarLoop]: Abstraction has 242 states and 338 transitions. [2020-10-19 18:54:16,472 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-10-19 18:54:16,472 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 242 states and 338 transitions. [2020-10-19 18:54:16,474 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 240 [2020-10-19 18:54:16,475 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:54:16,475 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:54:16,475 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-10-19 18:54:16,475 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:54:16,476 INFO L794 eck$LassoCheckResult]: Stem: 779#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(15);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 775#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_~p1~0, main_~lk1~0, main_~p2~0, main_~lk2~0, main_~p3~0, main_~lk3~0, main_~p4~0, main_~lk4~0, main_~p5~0, main_~lk5~0, main_~cond~0;main_~p1~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~lk1~0;main_~p2~0 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~lk2~0;main_~p3~0 := main_#t~nondet9;havoc main_#t~nondet9;havoc main_~lk3~0;main_~p4~0 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~lk4~0;main_~p5~0 := main_#t~nondet11;havoc main_#t~nondet11;havoc main_~lk5~0;havoc main_~cond~0; 776#L85-1 [2020-10-19 18:54:16,476 INFO L796 eck$LassoCheckResult]: Loop: 776#L85-1 assume !false;main_~cond~0 := main_#t~nondet12;havoc main_#t~nondet12; 809#L28 assume !(0 == main_~cond~0);main_~lk1~0 := 0;main_~lk2~0 := 0;main_~lk3~0 := 0;main_~lk4~0 := 0;main_~lk5~0 := 0; 806#L43 assume !(0 != main_~p1~0); 803#L43-2 assume !(0 != main_~p2~0); 796#L47-1 assume !(0 != main_~p3~0); 797#L51-1 assume !(0 != main_~p4~0); 828#L55-1 assume !(0 != main_~p5~0); 825#L59-1 assume !(0 != main_~p1~0); 822#L65-1 assume !(0 != main_~p2~0); 820#L70-1 assume !(0 != main_~p3~0); 816#L75-1 assume !(0 != main_~p4~0); 813#L80-1 assume !(0 != main_~p5~0); 776#L85-1 [2020-10-19 18:54:16,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:54:16,478 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 5 times [2020-10-19 18:54:16,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:54:16,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10703076] [2020-10-19 18:54:16,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:54:16,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:54:16,503 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:54:16,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:54:16,513 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:54:16,516 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:54:16,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:54:16,517 INFO L82 PathProgramCache]: Analyzing trace with hash 29816563, now seen corresponding path program 1 times [2020-10-19 18:54:16,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:54:16,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950063290] [2020-10-19 18:54:16,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:54:16,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:54:16,524 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:54:16,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:54:16,533 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:54:16,539 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:54:16,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:54:16,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1243965365, now seen corresponding path program 1 times [2020-10-19 18:54:16,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:54:16,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674693425] [2020-10-19 18:54:16,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:54:16,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:54:16,565 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:54:16,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:54:16,588 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:54:16,596 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:54:16,928 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2020-10-19 18:54:17,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.10 06:54:17 BoogieIcfgContainer [2020-10-19 18:54:17,051 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-19 18:54:17,052 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 18:54:17,052 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 18:54:17,052 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 18:54:17,053 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:54:15" (3/4) ... [2020-10-19 18:54:17,057 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-10-19 18:54:17,117 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 18:54:17,117 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 18:54:17,122 INFO L168 Benchmark]: Toolchain (without parser) took 2283.68 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.8 MB). Free memory was 958.6 MB in the beginning and 995.8 MB in the end (delta: -37.2 MB). Peak memory consumption was 87.6 MB. Max. memory is 11.5 GB. [2020-10-19 18:54:17,123 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:54:17,123 INFO L168 Benchmark]: CACSL2BoogieTranslator took 338.90 ms. Allocated memory is still 1.0 GB. Free memory was 958.6 MB in the beginning and 947.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:54:17,124 INFO L168 Benchmark]: Boogie Procedure Inliner took 100.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.8 MB). Free memory was 947.9 MB in the beginning and 1.1 GB in the end (delta: -173.2 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:54:17,125 INFO L168 Benchmark]: Boogie Preprocessor took 22.14 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2020-10-19 18:54:17,125 INFO L168 Benchmark]: RCFGBuilder took 321.90 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 11.5 GB. [2020-10-19 18:54:17,126 INFO L168 Benchmark]: BuchiAutomizer took 1418.42 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 995.8 MB in the end (delta: 99.3 MB). Peak memory consumption was 99.3 MB. Max. memory is 11.5 GB. [2020-10-19 18:54:17,126 INFO L168 Benchmark]: Witness Printer took 67.99 ms. Allocated memory is still 1.2 GB. Free memory is still 995.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:54:17,129 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 338.90 ms. Allocated memory is still 1.0 GB. Free memory was 958.6 MB in the beginning and 947.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 100.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.8 MB). Free memory was 947.9 MB in the beginning and 1.1 GB in the end (delta: -173.2 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.14 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 321.90 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1418.42 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 995.8 MB in the end (delta: 99.3 MB). Peak memory consumption was 99.3 MB. Max. memory is 11.5 GB. * Witness Printer took 67.99 ms. Allocated memory is still 1.2 GB. Free memory is still 995.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (4 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.4 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 242 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.3s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 0.9s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 4. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 242 states and ocurred in iteration 4. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 177 SDtfs, 89 SDslu, 100 SDs, 0 SdLazy, 20 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont1 unkn0 SFLI4 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 26]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=1} State at position 1 is {NULL=2, NULL=0, p1=0, \result=0, p3=0, p2=0, p5=0, NULL=1, p4=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1ea68263=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@28613a7a=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5d6b7c6b=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@13871cea=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@39183163=0, cond=11, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@180b6ed0=11, NULL=3, NULL=0, NULL=0, NULL=0, NULL=4, lk3=0, lk4=0, lk5=0, NULL=0, lk1=0, lk2=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 26]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L8] int p1 = __VERIFIER_nondet_int(); [L9] int lk1; [L11] int p2 = __VERIFIER_nondet_int(); [L12] int lk2; [L14] int p3 = __VERIFIER_nondet_int(); [L15] int lk3; [L17] int p4 = __VERIFIER_nondet_int(); [L18] int lk4; [L20] int p5 = __VERIFIER_nondet_int(); [L21] int lk5; [L24] int cond; Loop: [L26] COND TRUE 1 [L27] cond = __VERIFIER_nondet_int() [L28] COND FALSE !(cond == 0) [L31] lk1 = 0 [L33] lk2 = 0 [L35] lk3 = 0 [L37] lk4 = 0 [L39] lk5 = 0 [L43] COND FALSE !(p1 != 0) [L47] COND FALSE !(p2 != 0) [L51] COND FALSE !(p3 != 0) [L55] COND FALSE !(p4 != 0) [L59] COND FALSE !(p5 != 0) [L65] COND FALSE !(p1 != 0) [L70] COND FALSE !(p2 != 0) [L75] COND FALSE !(p3 != 0) [L80] COND FALSE !(p4 != 0) [L85] COND FALSE !(p5 != 0) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...