./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/locks/test_locks_14-1.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_14-1.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 1e59705ae4b9d6434bb0d27311e7a023ef1b3945 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 18:54:11,383 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:54:11,385 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:54:11,409 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:54:11,409 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:54:11,410 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:54:11,411 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:54:11,413 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:54:11,415 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:54:11,416 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:54:11,417 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:54:11,418 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:54:11,418 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:54:11,419 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:54:11,420 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:54:11,422 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:54:11,423 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:54:11,424 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:54:11,427 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:54:11,429 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:54:11,433 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:54:11,434 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:54:11,435 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:54:11,438 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:54:11,444 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:54:11,444 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:54:11,444 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:54:11,447 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:54:11,447 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:54:11,449 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:54:11,450 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:54:11,450 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:54:11,451 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:54:11,452 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:54:11,454 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:54:11,454 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:54:11,455 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:54:11,455 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:54:11,456 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:54:11,457 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:54:11,458 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:54:11,459 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-10-19 18:54:11,515 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:54:11,515 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:54:11,516 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:54:11,517 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:54:11,517 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:54:11,517 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-19 18:54:11,518 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-19 18:54:11,518 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-19 18:54:11,518 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-19 18:54:11,518 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-19 18:54:11,519 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-19 18:54:11,519 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:54:11,520 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 18:54:11,520 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:54:11,521 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:54:11,521 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 18:54:11,521 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:54:11,521 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-19 18:54:11,521 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-19 18:54:11,522 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-19 18:54:11,522 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 18:54:11,522 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 18:54:11,522 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-19 18:54:11,523 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:54:11,523 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-19 18:54:11,523 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:54:11,524 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:54:11,524 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-19 18:54:11,524 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:54:11,524 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 18:54:11,524 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:54:11,525 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-19 18:54:11,526 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-19 18:54:11,526 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 -> 1e59705ae4b9d6434bb0d27311e7a023ef1b3945 [2020-10-19 18:54:11,832 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:54:11,845 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:54:11,849 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:54:11,851 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:54:11,851 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:54:11,852 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/locks/test_locks_14-1.c [2020-10-19 18:54:11,914 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fed27ebcf/d6fc15a1fb13442d9c80ef14714afa6e/FLAGb3f482e49 [2020-10-19 18:54:12,337 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:54:12,338 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_14-1.c [2020-10-19 18:54:12,345 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fed27ebcf/d6fc15a1fb13442d9c80ef14714afa6e/FLAGb3f482e49 [2020-10-19 18:54:12,693 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fed27ebcf/d6fc15a1fb13442d9c80ef14714afa6e [2020-10-19 18:54:12,697 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:54:12,704 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 18:54:12,705 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:54:12,706 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:54:12,709 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:54:12,710 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:54:12" (1/1) ... [2020-10-19 18:54:12,714 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11cb0eef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:54:12, skipping insertion in model container [2020-10-19 18:54:12,714 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:54:12" (1/1) ... [2020-10-19 18:54:12,722 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:54:12,761 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:54:12,994 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:54:13,019 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 18:54:13,090 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:54:13,211 INFO L208 MainTranslator]: Completed translation [2020-10-19 18:54:13,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:54:13 WrapperNode [2020-10-19 18:54:13,214 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:54:13,215 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 18:54:13,215 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 18:54:13,215 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 18:54:13,224 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:54:13" (1/1) ... [2020-10-19 18:54:13,243 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:54:13" (1/1) ... [2020-10-19 18:54:13,269 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 18:54:13,269 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 18:54:13,269 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 18:54:13,270 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 18:54:13,280 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:54:13" (1/1) ... [2020-10-19 18:54:13,280 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:54:13" (1/1) ... [2020-10-19 18:54:13,282 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:54:13" (1/1) ... [2020-10-19 18:54:13,282 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:54:13" (1/1) ... [2020-10-19 18:54:13,287 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:54:13" (1/1) ... [2020-10-19 18:54:13,294 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:54:13" (1/1) ... [2020-10-19 18:54:13,296 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:54:13" (1/1) ... [2020-10-19 18:54:13,299 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 18:54:13,300 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 18:54:13,300 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 18:54:13,300 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 18:54:13,301 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:54:13" (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 18:54:13,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 18:54:13,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 18:54:13,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 18:54:13,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 18:54:13,731 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 18:54:13,732 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-10-19 18:54:13,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:54:13 BoogieIcfgContainer [2020-10-19 18:54:13,735 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 18:54:13,736 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-19 18:54:13,736 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-19 18:54:13,740 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-19 18:54:13,741 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 18:54:13,742 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.10 06:54:12" (1/3) ... [2020-10-19 18:54:13,743 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@23885963 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.10 06:54:13, skipping insertion in model container [2020-10-19 18:54:13,744 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 18:54:13,744 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:54:13" (2/3) ... [2020-10-19 18:54:13,745 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@23885963 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.10 06:54:13, skipping insertion in model container [2020-10-19 18:54:13,745 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 18:54:13,745 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:54:13" (3/3) ... [2020-10-19 18:54:13,747 INFO L373 chiAutomizerObserver]: Analyzing ICFG test_locks_14-1.c [2020-10-19 18:54:13,807 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-19 18:54:13,807 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-19 18:54:13,807 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-19 18:54:13,808 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 18:54:13,809 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 18:54:13,809 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-19 18:54:13,809 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 18:54:13,809 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-19 18:54:13,829 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 52 states. [2020-10-19 18:54:13,876 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 44 [2020-10-19 18:54:13,877 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:54:13,877 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:54:13,892 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-10-19 18:54:13,893 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:54:13,893 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-19 18:54:13,895 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 52 states. [2020-10-19 18:54:13,902 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 44 [2020-10-19 18:54:13,902 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:54:13,903 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:54:13,904 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-10-19 18:54:13,904 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:54:13,911 INFO L794 eck$LassoCheckResult]: Stem: 26#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(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 10#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_#t~nondet13, main_#t~nondet14, main_#t~nondet15, main_#t~nondet16, main_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_#t~nondet20, main_#t~nondet21, 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_~p6~0, main_~lk6~0, main_~p7~0, main_~lk7~0, main_~p8~0, main_~lk8~0, main_~p9~0, main_~lk9~0, main_~p10~0, main_~lk10~0, main_~p11~0, main_~lk11~0, main_~p12~0, main_~lk12~0, main_~p13~0, main_~lk13~0, main_~p14~0, main_~lk14~0, 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;main_~p6~0 := main_#t~nondet12;havoc main_#t~nondet12;havoc main_~lk6~0;main_~p7~0 := main_#t~nondet13;havoc main_#t~nondet13;havoc main_~lk7~0;main_~p8~0 := main_#t~nondet14;havoc main_#t~nondet14;havoc main_~lk8~0;main_~p9~0 := main_#t~nondet15;havoc main_#t~nondet15;havoc main_~lk9~0;main_~p10~0 := main_#t~nondet16;havoc main_#t~nondet16;havoc main_~lk10~0;main_~p11~0 := main_#t~nondet17;havoc main_#t~nondet17;havoc main_~lk11~0;main_~p12~0 := main_#t~nondet18;havoc main_#t~nondet18;havoc main_~lk12~0;main_~p13~0 := main_#t~nondet19;havoc main_#t~nondet19;havoc main_~lk13~0;main_~p14~0 := main_#t~nondet20;havoc main_#t~nondet20;havoc main_~lk14~0;havoc main_~cond~0; 49#L211-1true [2020-10-19 18:54:13,912 INFO L796 eck$LassoCheckResult]: Loop: 49#L211-1true assume !false;main_~cond~0 := main_#t~nondet21;havoc main_#t~nondet21; 30#L55true 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;main_~lk6~0 := 0;main_~lk7~0 := 0;main_~lk8~0 := 0;main_~lk9~0 := 0;main_~lk10~0 := 0;main_~lk11~0 := 0;main_~lk12~0 := 0;main_~lk13~0 := 0;main_~lk14~0 := 0; 31#L88true assume 0 != main_~p1~0;main_~lk1~0 := 1; 28#L88-2true assume 0 != main_~p2~0;main_~lk2~0 := 1; 19#L92-1true assume !(0 != main_~p3~0); 37#L96-1true assume 0 != main_~p4~0;main_~lk4~0 := 1; 43#L100-1true assume 0 != main_~p5~0;main_~lk5~0 := 1; 35#L104-1true assume 0 != main_~p6~0;main_~lk6~0 := 1; 52#L108-1true assume 0 != main_~p7~0;main_~lk7~0 := 1; 45#L112-1true assume 0 != main_~p8~0;main_~lk8~0 := 1; 50#L116-1true assume 0 != main_~p9~0;main_~lk9~0 := 1; 14#L120-1true assume 0 != main_~p10~0;main_~lk10~0 := 1; 4#L124-1true assume !(0 != main_~p11~0); 25#L128-1true assume 0 != main_~p12~0;main_~lk12~0 := 1; 32#L132-1true assume 0 != main_~p13~0;main_~lk13~0 := 1; 22#L136-1true assume 0 != main_~p14~0;main_~lk14~0 := 1; 39#L140-1true assume !(0 != main_~p1~0); 5#L146-1true assume !(0 != main_~p2~0); 40#L151-1true assume !(0 != main_~p3~0); 47#L156-1true assume !(0 != main_~p4~0); 27#L161-1true assume !(0 != main_~p5~0); 33#L166-1true assume !(0 != main_~p6~0); 11#L171-1true assume !(0 != main_~p7~0); 18#L176-1true assume !(0 != main_~p8~0); 36#L181-1true assume !(0 != main_~p9~0); 17#L186-1true assume !(0 != main_~p10~0); 24#L191-1true assume !(0 != main_~p11~0); 54#L196-1true assume !(0 != main_~p12~0); 7#L201-1true assume !(0 != main_~p13~0); 42#L206-1true assume !(0 != main_~p14~0); 49#L211-1true [2020-10-19 18:54:13,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:54:13,918 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2020-10-19 18:54:13,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:54:13,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794830260] [2020-10-19 18:54:13,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:54:14,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:54:14,040 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:54:14,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:54:14,058 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:54:14,083 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:54:14,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:54:14,085 INFO L82 PathProgramCache]: Analyzing trace with hash 1221430905, now seen corresponding path program 1 times [2020-10-19 18:54:14,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:54:14,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305255764] [2020-10-19 18:54:14,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:54:14,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:54:14,202 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 18:54:14,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305255764] [2020-10-19 18:54:14,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:54:14,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 18:54:14,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827147488] [2020-10-19 18:54:14,216 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-10-19 18:54:14,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:54:14,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:54:14,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:54:14,237 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 3 states. [2020-10-19 18:54:14,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:54:14,283 INFO L93 Difference]: Finished difference Result 99 states and 178 transitions. [2020-10-19 18:54:14,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:54:14,286 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 99 states and 178 transitions. [2020-10-19 18:54:14,293 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 87 [2020-10-19 18:54:14,300 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 99 states to 89 states and 143 transitions. [2020-10-19 18:54:14,301 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 89 [2020-10-19 18:54:14,302 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 89 [2020-10-19 18:54:14,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 89 states and 143 transitions. [2020-10-19 18:54:14,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-19 18:54:14,304 INFO L691 BuchiCegarLoop]: Abstraction has 89 states and 143 transitions. [2020-10-19 18:54:14,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states and 143 transitions. [2020-10-19 18:54:14,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2020-10-19 18:54:14,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-19 18:54:14,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 143 transitions. [2020-10-19 18:54:14,340 INFO L714 BuchiCegarLoop]: Abstraction has 89 states and 143 transitions. [2020-10-19 18:54:14,340 INFO L594 BuchiCegarLoop]: Abstraction has 89 states and 143 transitions. [2020-10-19 18:54:14,340 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-19 18:54:14,340 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 89 states and 143 transitions. [2020-10-19 18:54:14,343 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 87 [2020-10-19 18:54:14,343 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:54:14,344 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:54:14,344 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-10-19 18:54:14,344 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:54:14,345 INFO L794 eck$LassoCheckResult]: Stem: 206#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(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 184#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_#t~nondet13, main_#t~nondet14, main_#t~nondet15, main_#t~nondet16, main_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_#t~nondet20, main_#t~nondet21, 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_~p6~0, main_~lk6~0, main_~p7~0, main_~lk7~0, main_~p8~0, main_~lk8~0, main_~p9~0, main_~lk9~0, main_~p10~0, main_~lk10~0, main_~p11~0, main_~lk11~0, main_~p12~0, main_~lk12~0, main_~p13~0, main_~lk13~0, main_~p14~0, main_~lk14~0, 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;main_~p6~0 := main_#t~nondet12;havoc main_#t~nondet12;havoc main_~lk6~0;main_~p7~0 := main_#t~nondet13;havoc main_#t~nondet13;havoc main_~lk7~0;main_~p8~0 := main_#t~nondet14;havoc main_#t~nondet14;havoc main_~lk8~0;main_~p9~0 := main_#t~nondet15;havoc main_#t~nondet15;havoc main_~lk9~0;main_~p10~0 := main_#t~nondet16;havoc main_#t~nondet16;havoc main_~lk10~0;main_~p11~0 := main_#t~nondet17;havoc main_#t~nondet17;havoc main_~lk11~0;main_~p12~0 := main_#t~nondet18;havoc main_#t~nondet18;havoc main_~lk12~0;main_~p13~0 := main_#t~nondet19;havoc main_#t~nondet19;havoc main_~lk13~0;main_~p14~0 := main_#t~nondet20;havoc main_#t~nondet20;havoc main_~lk14~0;havoc main_~cond~0; 185#L211-1 [2020-10-19 18:54:14,345 INFO L796 eck$LassoCheckResult]: Loop: 185#L211-1 assume !false;main_~cond~0 := main_#t~nondet21;havoc main_#t~nondet21; 208#L55 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;main_~lk6~0 := 0;main_~lk7~0 := 0;main_~lk8~0 := 0;main_~lk9~0 := 0;main_~lk10~0 := 0;main_~lk11~0 := 0;main_~lk12~0 := 0;main_~lk13~0 := 0;main_~lk14~0 := 0; 209#L88 assume !(0 != main_~p1~0); 211#L88-2 assume 0 != main_~p2~0;main_~lk2~0 := 1; 248#L92-1 assume !(0 != main_~p3~0); 247#L96-1 assume 0 != main_~p4~0;main_~lk4~0 := 1; 246#L100-1 assume 0 != main_~p5~0;main_~lk5~0 := 1; 245#L104-1 assume 0 != main_~p6~0;main_~lk6~0 := 1; 244#L108-1 assume 0 != main_~p7~0;main_~lk7~0 := 1; 243#L112-1 assume 0 != main_~p8~0;main_~lk8~0 := 1; 242#L116-1 assume 0 != main_~p9~0;main_~lk9~0 := 1; 241#L120-1 assume 0 != main_~p10~0;main_~lk10~0 := 1; 240#L124-1 assume !(0 != main_~p11~0); 239#L128-1 assume 0 != main_~p12~0;main_~lk12~0 := 1; 238#L132-1 assume 0 != main_~p13~0;main_~lk13~0 := 1; 237#L136-1 assume 0 != main_~p14~0;main_~lk14~0 := 1; 236#L140-1 assume !(0 != main_~p1~0); 235#L146-1 assume !(0 != main_~p2~0); 233#L151-1 assume !(0 != main_~p3~0); 231#L156-1 assume !(0 != main_~p4~0); 229#L161-1 assume !(0 != main_~p5~0); 227#L166-1 assume !(0 != main_~p6~0); 224#L171-1 assume !(0 != main_~p7~0); 200#L176-1 assume !(0 != main_~p8~0); 179#L181-1 assume !(0 != main_~p9~0); 180#L186-1 assume !(0 != main_~p10~0); 219#L191-1 assume !(0 != main_~p11~0); 217#L196-1 assume !(0 != main_~p12~0); 215#L201-1 assume !(0 != main_~p13~0); 213#L206-1 assume !(0 != main_~p14~0); 185#L211-1 [2020-10-19 18:54:14,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:54:14,346 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2020-10-19 18:54:14,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:54:14,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302637787] [2020-10-19 18:54:14,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:54:14,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:54:14,361 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:54:14,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:54:14,374 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:54:14,380 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:54:14,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:54:14,381 INFO L82 PathProgramCache]: Analyzing trace with hash 711957815, now seen corresponding path program 1 times [2020-10-19 18:54:14,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:54:14,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302236582] [2020-10-19 18:54:14,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:54:14,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:54:14,426 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 18:54:14,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302236582] [2020-10-19 18:54:14,427 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:54:14,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 18:54:14,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102120787] [2020-10-19 18:54:14,428 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-10-19 18:54:14,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:54:14,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:54:14,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:54:14,429 INFO L87 Difference]: Start difference. First operand 89 states and 143 transitions. cyclomatic complexity: 56 Second operand 3 states. [2020-10-19 18:54:14,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:54:14,468 INFO L93 Difference]: Finished difference Result 174 states and 278 transitions. [2020-10-19 18:54:14,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:54:14,469 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 174 states and 278 transitions. [2020-10-19 18:54:14,476 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 172 [2020-10-19 18:54:14,479 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 174 states to 174 states and 278 transitions. [2020-10-19 18:54:14,480 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 174 [2020-10-19 18:54:14,480 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 174 [2020-10-19 18:54:14,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 174 states and 278 transitions. [2020-10-19 18:54:14,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-19 18:54:14,482 INFO L691 BuchiCegarLoop]: Abstraction has 174 states and 278 transitions. [2020-10-19 18:54:14,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states and 278 transitions. [2020-10-19 18:54:14,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2020-10-19 18:54:14,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-10-19 18:54:14,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 278 transitions. [2020-10-19 18:54:14,498 INFO L714 BuchiCegarLoop]: Abstraction has 174 states and 278 transitions. [2020-10-19 18:54:14,498 INFO L594 BuchiCegarLoop]: Abstraction has 174 states and 278 transitions. [2020-10-19 18:54:14,498 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-10-19 18:54:14,499 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 174 states and 278 transitions. [2020-10-19 18:54:14,502 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 172 [2020-10-19 18:54:14,502 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:54:14,502 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:54:14,503 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-10-19 18:54:14,503 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:54:14,503 INFO L794 eck$LassoCheckResult]: Stem: 477#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(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 452#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_#t~nondet13, main_#t~nondet14, main_#t~nondet15, main_#t~nondet16, main_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_#t~nondet20, main_#t~nondet21, 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_~p6~0, main_~lk6~0, main_~p7~0, main_~lk7~0, main_~p8~0, main_~lk8~0, main_~p9~0, main_~lk9~0, main_~p10~0, main_~lk10~0, main_~p11~0, main_~lk11~0, main_~p12~0, main_~lk12~0, main_~p13~0, main_~lk13~0, main_~p14~0, main_~lk14~0, 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;main_~p6~0 := main_#t~nondet12;havoc main_#t~nondet12;havoc main_~lk6~0;main_~p7~0 := main_#t~nondet13;havoc main_#t~nondet13;havoc main_~lk7~0;main_~p8~0 := main_#t~nondet14;havoc main_#t~nondet14;havoc main_~lk8~0;main_~p9~0 := main_#t~nondet15;havoc main_#t~nondet15;havoc main_~lk9~0;main_~p10~0 := main_#t~nondet16;havoc main_#t~nondet16;havoc main_~lk10~0;main_~p11~0 := main_#t~nondet17;havoc main_#t~nondet17;havoc main_~lk11~0;main_~p12~0 := main_#t~nondet18;havoc main_#t~nondet18;havoc main_~lk12~0;main_~p13~0 := main_#t~nondet19;havoc main_#t~nondet19;havoc main_~lk13~0;main_~p14~0 := main_#t~nondet20;havoc main_#t~nondet20;havoc main_~lk14~0;havoc main_~cond~0; 453#L211-1 [2020-10-19 18:54:14,504 INFO L796 eck$LassoCheckResult]: Loop: 453#L211-1 assume !false;main_~cond~0 := main_#t~nondet21;havoc main_#t~nondet21; 480#L55 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;main_~lk6~0 := 0;main_~lk7~0 := 0;main_~lk8~0 := 0;main_~lk9~0 := 0;main_~lk10~0 := 0;main_~lk11~0 := 0;main_~lk12~0 := 0;main_~lk13~0 := 0;main_~lk14~0 := 0; 481#L88 assume !(0 != main_~p1~0); 553#L88-2 assume !(0 != main_~p2~0); 551#L92-1 assume !(0 != main_~p3~0); 549#L96-1 assume 0 != main_~p4~0;main_~lk4~0 := 1; 547#L100-1 assume 0 != main_~p5~0;main_~lk5~0 := 1; 440#L104-1 assume 0 != main_~p6~0;main_~lk6~0 := 1; 441#L108-1 assume 0 != main_~p7~0;main_~lk7~0 := 1; 469#L112-1 assume 0 != main_~p8~0;main_~lk8~0 := 1; 470#L116-1 assume 0 != main_~p9~0;main_~lk9~0 := 1; 462#L120-1 assume 0 != main_~p10~0;main_~lk10~0 := 1; 434#L124-1 assume !(0 != main_~p11~0); 435#L128-1 assume 0 != main_~p12~0;main_~lk12~0 := 1; 476#L132-1 assume 0 != main_~p13~0;main_~lk13~0 := 1; 486#L136-1 assume 0 != main_~p14~0;main_~lk14~0 := 1; 520#L140-1 assume !(0 != main_~p1~0); 519#L146-1 assume !(0 != main_~p2~0); 459#L151-1 assume !(0 != main_~p3~0); 443#L156-1 assume !(0 != main_~p4~0); 464#L161-1 assume !(0 != main_~p5~0); 429#L166-1 assume !(0 != main_~p6~0); 430#L171-1 assume !(0 != main_~p7~0); 439#L176-1 assume !(0 != main_~p8~0); 461#L181-1 assume !(0 != main_~p9~0); 500#L186-1 assume !(0 != main_~p10~0); 495#L191-1 assume !(0 != main_~p11~0); 493#L196-1 assume !(0 != main_~p12~0); 491#L201-1 assume !(0 != main_~p13~0); 489#L206-1 assume !(0 != main_~p14~0); 453#L211-1 [2020-10-19 18:54:14,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:54:14,504 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2020-10-19 18:54:14,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:54:14,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807310904] [2020-10-19 18:54:14,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:54:14,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:54:14,518 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:54:14,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:54:14,530 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:54:14,536 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:54:14,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:54:14,537 INFO L82 PathProgramCache]: Analyzing trace with hash -1659781447, now seen corresponding path program 1 times [2020-10-19 18:54:14,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:54:14,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486693594] [2020-10-19 18:54:14,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:54:14,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:54:14,601 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 18:54:14,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486693594] [2020-10-19 18:54:14,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:54:14,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 18:54:14,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608234236] [2020-10-19 18:54:14,603 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-10-19 18:54:14,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:54:14,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:54:14,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:54:14,604 INFO L87 Difference]: Start difference. First operand 174 states and 278 transitions. cyclomatic complexity: 108 Second operand 3 states. [2020-10-19 18:54:14,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:54:14,636 INFO L93 Difference]: Finished difference Result 342 states and 542 transitions. [2020-10-19 18:54:14,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:54:14,636 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 342 states and 542 transitions. [2020-10-19 18:54:14,642 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 340 [2020-10-19 18:54:14,646 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 342 states to 342 states and 542 transitions. [2020-10-19 18:54:14,646 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 342 [2020-10-19 18:54:14,648 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 342 [2020-10-19 18:54:14,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 342 states and 542 transitions. [2020-10-19 18:54:14,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-19 18:54:14,651 INFO L691 BuchiCegarLoop]: Abstraction has 342 states and 542 transitions. [2020-10-19 18:54:14,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states and 542 transitions. [2020-10-19 18:54:14,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 342. [2020-10-19 18:54:14,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 342 states. [2020-10-19 18:54:14,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 542 transitions. [2020-10-19 18:54:14,678 INFO L714 BuchiCegarLoop]: Abstraction has 342 states and 542 transitions. [2020-10-19 18:54:14,678 INFO L594 BuchiCegarLoop]: Abstraction has 342 states and 542 transitions. [2020-10-19 18:54:14,678 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-10-19 18:54:14,679 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 342 states and 542 transitions. [2020-10-19 18:54:14,681 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 340 [2020-10-19 18:54:14,682 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:54:14,682 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:54:14,683 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-10-19 18:54:14,683 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:54:14,683 INFO L794 eck$LassoCheckResult]: Stem: 1001#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(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 974#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_#t~nondet13, main_#t~nondet14, main_#t~nondet15, main_#t~nondet16, main_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_#t~nondet20, main_#t~nondet21, 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_~p6~0, main_~lk6~0, main_~p7~0, main_~lk7~0, main_~p8~0, main_~lk8~0, main_~p9~0, main_~lk9~0, main_~p10~0, main_~lk10~0, main_~p11~0, main_~lk11~0, main_~p12~0, main_~lk12~0, main_~p13~0, main_~lk13~0, main_~p14~0, main_~lk14~0, 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;main_~p6~0 := main_#t~nondet12;havoc main_#t~nondet12;havoc main_~lk6~0;main_~p7~0 := main_#t~nondet13;havoc main_#t~nondet13;havoc main_~lk7~0;main_~p8~0 := main_#t~nondet14;havoc main_#t~nondet14;havoc main_~lk8~0;main_~p9~0 := main_#t~nondet15;havoc main_#t~nondet15;havoc main_~lk9~0;main_~p10~0 := main_#t~nondet16;havoc main_#t~nondet16;havoc main_~lk10~0;main_~p11~0 := main_#t~nondet17;havoc main_#t~nondet17;havoc main_~lk11~0;main_~p12~0 := main_#t~nondet18;havoc main_#t~nondet18;havoc main_~lk12~0;main_~p13~0 := main_#t~nondet19;havoc main_#t~nondet19;havoc main_~lk13~0;main_~p14~0 := main_#t~nondet20;havoc main_#t~nondet20;havoc main_~lk14~0;havoc main_~cond~0; 975#L211-1 [2020-10-19 18:54:14,683 INFO L796 eck$LassoCheckResult]: Loop: 975#L211-1 assume !false;main_~cond~0 := main_#t~nondet21;havoc main_#t~nondet21; 1065#L55 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;main_~lk6~0 := 0;main_~lk7~0 := 0;main_~lk8~0 := 0;main_~lk9~0 := 0;main_~lk10~0 := 0;main_~lk11~0 := 0;main_~lk12~0 := 0;main_~lk13~0 := 0;main_~lk14~0 := 0; 1062#L88 assume !(0 != main_~p1~0); 1058#L88-2 assume !(0 != main_~p2~0); 1055#L92-1 assume !(0 != main_~p3~0); 1052#L96-1 assume !(0 != main_~p4~0); 1053#L100-1 assume 0 != main_~p5~0;main_~lk5~0 := 1; 1047#L104-1 assume 0 != main_~p6~0;main_~lk6~0 := 1; 1048#L108-1 assume 0 != main_~p7~0;main_~lk7~0 := 1; 1043#L112-1 assume 0 != main_~p8~0;main_~lk8~0 := 1; 1044#L116-1 assume 0 != main_~p9~0;main_~lk9~0 := 1; 1039#L120-1 assume 0 != main_~p10~0;main_~lk10~0 := 1; 1040#L124-1 assume !(0 != main_~p11~0); 1035#L128-1 assume 0 != main_~p12~0;main_~lk12~0 := 1; 1036#L132-1 assume 0 != main_~p13~0;main_~lk13~0 := 1; 1031#L136-1 assume 0 != main_~p14~0;main_~lk14~0 := 1; 1032#L140-1 assume !(0 != main_~p1~0); 1114#L146-1 assume !(0 != main_~p2~0); 1111#L151-1 assume !(0 != main_~p3~0); 1108#L156-1 assume !(0 != main_~p4~0); 1106#L161-1 assume !(0 != main_~p5~0); 1102#L166-1 assume !(0 != main_~p6~0); 1097#L171-1 assume !(0 != main_~p7~0); 1094#L176-1 assume !(0 != main_~p8~0); 1090#L181-1 assume !(0 != main_~p9~0); 1085#L186-1 assume !(0 != main_~p10~0); 1082#L191-1 assume !(0 != main_~p11~0); 1078#L196-1 assume !(0 != main_~p12~0); 1074#L201-1 assume !(0 != main_~p13~0); 1070#L206-1 assume !(0 != main_~p14~0); 975#L211-1 [2020-10-19 18:54:14,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:54:14,684 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 4 times [2020-10-19 18:54:14,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:54:14,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164181154] [2020-10-19 18:54:14,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:54:14,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:54:14,697 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:54:14,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:54:14,707 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:54:14,713 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:54:14,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:54:14,713 INFO L82 PathProgramCache]: Analyzing trace with hash -1519232837, now seen corresponding path program 1 times [2020-10-19 18:54:14,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:54:14,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088571564] [2020-10-19 18:54:14,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:54:14,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:54:14,758 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 18:54:14,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088571564] [2020-10-19 18:54:14,759 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:54:14,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 18:54:14,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408768549] [2020-10-19 18:54:14,760 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-10-19 18:54:14,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:54:14,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:54:14,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:54:14,761 INFO L87 Difference]: Start difference. First operand 342 states and 542 transitions. cyclomatic complexity: 208 Second operand 3 states. [2020-10-19 18:54:14,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:54:14,788 INFO L93 Difference]: Finished difference Result 674 states and 1058 transitions. [2020-10-19 18:54:14,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:54:14,789 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 674 states and 1058 transitions. [2020-10-19 18:54:14,797 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 672 [2020-10-19 18:54:14,804 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 674 states to 674 states and 1058 transitions. [2020-10-19 18:54:14,804 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 674 [2020-10-19 18:54:14,806 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 674 [2020-10-19 18:54:14,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 674 states and 1058 transitions. [2020-10-19 18:54:14,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-19 18:54:14,810 INFO L691 BuchiCegarLoop]: Abstraction has 674 states and 1058 transitions. [2020-10-19 18:54:14,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states and 1058 transitions. [2020-10-19 18:54:14,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 674. [2020-10-19 18:54:14,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 674 states. [2020-10-19 18:54:14,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 1058 transitions. [2020-10-19 18:54:14,844 INFO L714 BuchiCegarLoop]: Abstraction has 674 states and 1058 transitions. [2020-10-19 18:54:14,844 INFO L594 BuchiCegarLoop]: Abstraction has 674 states and 1058 transitions. [2020-10-19 18:54:14,845 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-10-19 18:54:14,845 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 674 states and 1058 transitions. [2020-10-19 18:54:14,850 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 672 [2020-10-19 18:54:14,850 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:54:14,851 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:54:14,853 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-10-19 18:54:14,853 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:54:14,853 INFO L794 eck$LassoCheckResult]: Stem: 2023#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(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 1996#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_#t~nondet13, main_#t~nondet14, main_#t~nondet15, main_#t~nondet16, main_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_#t~nondet20, main_#t~nondet21, 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_~p6~0, main_~lk6~0, main_~p7~0, main_~lk7~0, main_~p8~0, main_~lk8~0, main_~p9~0, main_~lk9~0, main_~p10~0, main_~lk10~0, main_~p11~0, main_~lk11~0, main_~p12~0, main_~lk12~0, main_~p13~0, main_~lk13~0, main_~p14~0, main_~lk14~0, 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;main_~p6~0 := main_#t~nondet12;havoc main_#t~nondet12;havoc main_~lk6~0;main_~p7~0 := main_#t~nondet13;havoc main_#t~nondet13;havoc main_~lk7~0;main_~p8~0 := main_#t~nondet14;havoc main_#t~nondet14;havoc main_~lk8~0;main_~p9~0 := main_#t~nondet15;havoc main_#t~nondet15;havoc main_~lk9~0;main_~p10~0 := main_#t~nondet16;havoc main_#t~nondet16;havoc main_~lk10~0;main_~p11~0 := main_#t~nondet17;havoc main_#t~nondet17;havoc main_~lk11~0;main_~p12~0 := main_#t~nondet18;havoc main_#t~nondet18;havoc main_~lk12~0;main_~p13~0 := main_#t~nondet19;havoc main_#t~nondet19;havoc main_~lk13~0;main_~p14~0 := main_#t~nondet20;havoc main_#t~nondet20;havoc main_~lk14~0;havoc main_~cond~0; 1997#L211-1 [2020-10-19 18:54:14,855 INFO L796 eck$LassoCheckResult]: Loop: 1997#L211-1 assume !false;main_~cond~0 := main_#t~nondet21;havoc main_#t~nondet21; 2114#L55 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;main_~lk6~0 := 0;main_~lk7~0 := 0;main_~lk8~0 := 0;main_~lk9~0 := 0;main_~lk10~0 := 0;main_~lk11~0 := 0;main_~lk12~0 := 0;main_~lk13~0 := 0;main_~lk14~0 := 0; 2110#L88 assume !(0 != main_~p1~0); 2108#L88-2 assume !(0 != main_~p2~0); 2106#L92-1 assume !(0 != main_~p3~0); 2102#L96-1 assume !(0 != main_~p4~0); 2098#L100-1 assume !(0 != main_~p5~0); 2096#L104-1 assume 0 != main_~p6~0;main_~lk6~0 := 1; 2094#L108-1 assume 0 != main_~p7~0;main_~lk7~0 := 1; 2092#L112-1 assume 0 != main_~p8~0;main_~lk8~0 := 1; 2090#L116-1 assume 0 != main_~p9~0;main_~lk9~0 := 1; 2088#L120-1 assume 0 != main_~p10~0;main_~lk10~0 := 1; 2086#L124-1 assume !(0 != main_~p11~0); 2084#L128-1 assume 0 != main_~p12~0;main_~lk12~0 := 1; 2082#L132-1 assume 0 != main_~p13~0;main_~lk13~0 := 1; 2080#L136-1 assume 0 != main_~p14~0;main_~lk14~0 := 1; 2076#L140-1 assume !(0 != main_~p1~0); 2074#L146-1 assume !(0 != main_~p2~0); 2068#L151-1 assume !(0 != main_~p3~0); 2067#L156-1 assume !(0 != main_~p4~0); 2153#L161-1 assume !(0 != main_~p5~0); 2150#L166-1 assume !(0 != main_~p6~0); 2145#L171-1 assume !(0 != main_~p7~0); 2142#L176-1 assume !(0 != main_~p8~0); 2138#L181-1 assume !(0 != main_~p9~0); 2133#L186-1 assume !(0 != main_~p10~0); 2130#L191-1 assume !(0 != main_~p11~0); 2126#L196-1 assume !(0 != main_~p12~0); 2122#L201-1 assume !(0 != main_~p13~0); 2118#L206-1 assume !(0 != main_~p14~0); 1997#L211-1 [2020-10-19 18:54:14,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:54:14,856 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 5 times [2020-10-19 18:54:14,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:54:14,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287753069] [2020-10-19 18:54:14,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:54:14,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:54:14,871 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:54:14,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:54:14,879 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:54:14,889 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:54:14,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:54:14,890 INFO L82 PathProgramCache]: Analyzing trace with hash -1653246343, now seen corresponding path program 1 times [2020-10-19 18:54:14,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:54:14,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269951189] [2020-10-19 18:54:14,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:54:14,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:54:14,946 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 18:54:14,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269951189] [2020-10-19 18:54:14,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:54:14,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 18:54:14,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412652268] [2020-10-19 18:54:14,949 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-10-19 18:54:14,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:54:14,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:54:14,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:54:14,950 INFO L87 Difference]: Start difference. First operand 674 states and 1058 transitions. cyclomatic complexity: 400 Second operand 3 states. [2020-10-19 18:54:14,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:54:14,975 INFO L93 Difference]: Finished difference Result 1330 states and 2066 transitions. [2020-10-19 18:54:14,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:54:14,976 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1330 states and 2066 transitions. [2020-10-19 18:54:14,989 INFO L131 ngComponentsAnalysis]: Automaton has 32 accepting balls. 1328 [2020-10-19 18:54:14,999 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1330 states to 1330 states and 2066 transitions. [2020-10-19 18:54:14,999 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1330 [2020-10-19 18:54:15,001 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1330 [2020-10-19 18:54:15,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1330 states and 2066 transitions. [2020-10-19 18:54:15,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-19 18:54:15,004 INFO L691 BuchiCegarLoop]: Abstraction has 1330 states and 2066 transitions. [2020-10-19 18:54:15,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states and 2066 transitions. [2020-10-19 18:54:15,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 1330. [2020-10-19 18:54:15,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1330 states. [2020-10-19 18:54:15,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1330 states to 1330 states and 2066 transitions. [2020-10-19 18:54:15,039 INFO L714 BuchiCegarLoop]: Abstraction has 1330 states and 2066 transitions. [2020-10-19 18:54:15,039 INFO L594 BuchiCegarLoop]: Abstraction has 1330 states and 2066 transitions. [2020-10-19 18:54:15,039 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-10-19 18:54:15,040 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 1330 states and 2066 transitions. [2020-10-19 18:54:15,048 INFO L131 ngComponentsAnalysis]: Automaton has 32 accepting balls. 1328 [2020-10-19 18:54:15,048 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:54:15,049 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:54:15,052 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-10-19 18:54:15,052 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:54:15,052 INFO L794 eck$LassoCheckResult]: Stem: 4035#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(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 4005#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_#t~nondet13, main_#t~nondet14, main_#t~nondet15, main_#t~nondet16, main_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_#t~nondet20, main_#t~nondet21, 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_~p6~0, main_~lk6~0, main_~p7~0, main_~lk7~0, main_~p8~0, main_~lk8~0, main_~p9~0, main_~lk9~0, main_~p10~0, main_~lk10~0, main_~p11~0, main_~lk11~0, main_~p12~0, main_~lk12~0, main_~p13~0, main_~lk13~0, main_~p14~0, main_~lk14~0, 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;main_~p6~0 := main_#t~nondet12;havoc main_#t~nondet12;havoc main_~lk6~0;main_~p7~0 := main_#t~nondet13;havoc main_#t~nondet13;havoc main_~lk7~0;main_~p8~0 := main_#t~nondet14;havoc main_#t~nondet14;havoc main_~lk8~0;main_~p9~0 := main_#t~nondet15;havoc main_#t~nondet15;havoc main_~lk9~0;main_~p10~0 := main_#t~nondet16;havoc main_#t~nondet16;havoc main_~lk10~0;main_~p11~0 := main_#t~nondet17;havoc main_#t~nondet17;havoc main_~lk11~0;main_~p12~0 := main_#t~nondet18;havoc main_#t~nondet18;havoc main_~lk12~0;main_~p13~0 := main_#t~nondet19;havoc main_#t~nondet19;havoc main_~lk13~0;main_~p14~0 := main_#t~nondet20;havoc main_#t~nondet20;havoc main_~lk14~0;havoc main_~cond~0; 4006#L211-1 [2020-10-19 18:54:15,053 INFO L796 eck$LassoCheckResult]: Loop: 4006#L211-1 assume !false;main_~cond~0 := main_#t~nondet21;havoc main_#t~nondet21; 4189#L55 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;main_~lk6~0 := 0;main_~lk7~0 := 0;main_~lk8~0 := 0;main_~lk9~0 := 0;main_~lk10~0 := 0;main_~lk11~0 := 0;main_~lk12~0 := 0;main_~lk13~0 := 0;main_~lk14~0 := 0; 4190#L88 assume !(0 != main_~p1~0); 4306#L88-2 assume !(0 != main_~p2~0); 4352#L92-1 assume !(0 != main_~p3~0); 4297#L96-1 assume !(0 != main_~p4~0); 4299#L100-1 assume !(0 != main_~p5~0); 4364#L104-1 assume !(0 != main_~p6~0); 4363#L108-1 assume 0 != main_~p7~0;main_~lk7~0 := 1; 4362#L112-1 assume 0 != main_~p8~0;main_~lk8~0 := 1; 4361#L116-1 assume 0 != main_~p9~0;main_~lk9~0 := 1; 4360#L120-1 assume 0 != main_~p10~0;main_~lk10~0 := 1; 4359#L124-1 assume !(0 != main_~p11~0); 4358#L128-1 assume 0 != main_~p12~0;main_~lk12~0 := 1; 4357#L132-1 assume 0 != main_~p13~0;main_~lk13~0 := 1; 4356#L136-1 assume 0 != main_~p14~0;main_~lk14~0 := 1; 4354#L140-1 assume !(0 != main_~p1~0); 4327#L146-1 assume !(0 != main_~p2~0); 4325#L151-1 assume !(0 != main_~p3~0); 4253#L156-1 assume !(0 != main_~p4~0); 4255#L161-1 assume !(0 != main_~p5~0); 4320#L166-1 assume !(0 != main_~p6~0); 4238#L171-1 assume !(0 != main_~p7~0); 4234#L176-1 assume !(0 != main_~p8~0); 4233#L181-1 assume !(0 != main_~p9~0); 4220#L186-1 assume !(0 != main_~p10~0); 4221#L191-1 assume !(0 != main_~p11~0); 4211#L196-1 assume !(0 != main_~p12~0); 4210#L201-1 assume !(0 != main_~p13~0); 4199#L206-1 assume !(0 != main_~p14~0); 4006#L211-1 [2020-10-19 18:54:15,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:54:15,054 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 6 times [2020-10-19 18:54:15,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:54:15,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85914872] [2020-10-19 18:54:15,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:54:15,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:54:15,074 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:54:15,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:54:15,095 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:54:15,102 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:54:15,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:54:15,107 INFO L82 PathProgramCache]: Analyzing trace with hash 836282619, now seen corresponding path program 1 times [2020-10-19 18:54:15,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:54:15,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016433782] [2020-10-19 18:54:15,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:54:15,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:54:15,146 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 18:54:15,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016433782] [2020-10-19 18:54:15,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:54:15,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 18:54:15,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162182693] [2020-10-19 18:54:15,148 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-10-19 18:54:15,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:54:15,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:54:15,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:54:15,151 INFO L87 Difference]: Start difference. First operand 1330 states and 2066 transitions. cyclomatic complexity: 768 Second operand 3 states. [2020-10-19 18:54:15,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:54:15,183 INFO L93 Difference]: Finished difference Result 2626 states and 4034 transitions. [2020-10-19 18:54:15,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:54:15,184 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 2626 states and 4034 transitions. [2020-10-19 18:54:15,209 INFO L131 ngComponentsAnalysis]: Automaton has 64 accepting balls. 2624 [2020-10-19 18:54:15,228 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 2626 states to 2626 states and 4034 transitions. [2020-10-19 18:54:15,228 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 2626 [2020-10-19 18:54:15,231 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 2626 [2020-10-19 18:54:15,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2626 states and 4034 transitions. [2020-10-19 18:54:15,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-19 18:54:15,237 INFO L691 BuchiCegarLoop]: Abstraction has 2626 states and 4034 transitions. [2020-10-19 18:54:15,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2626 states and 4034 transitions. [2020-10-19 18:54:15,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2626 to 2626. [2020-10-19 18:54:15,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2626 states. [2020-10-19 18:54:15,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2626 states to 2626 states and 4034 transitions. [2020-10-19 18:54:15,298 INFO L714 BuchiCegarLoop]: Abstraction has 2626 states and 4034 transitions. [2020-10-19 18:54:15,298 INFO L594 BuchiCegarLoop]: Abstraction has 2626 states and 4034 transitions. [2020-10-19 18:54:15,298 INFO L427 BuchiCegarLoop]: ======== Iteration 7============ [2020-10-19 18:54:15,299 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2626 states and 4034 transitions. [2020-10-19 18:54:15,315 INFO L131 ngComponentsAnalysis]: Automaton has 64 accepting balls. 2624 [2020-10-19 18:54:15,316 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:54:15,316 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:54:15,317 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-10-19 18:54:15,317 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:54:15,317 INFO L794 eck$LassoCheckResult]: Stem: 7997#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(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 7967#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_#t~nondet13, main_#t~nondet14, main_#t~nondet15, main_#t~nondet16, main_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_#t~nondet20, main_#t~nondet21, 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_~p6~0, main_~lk6~0, main_~p7~0, main_~lk7~0, main_~p8~0, main_~lk8~0, main_~p9~0, main_~lk9~0, main_~p10~0, main_~lk10~0, main_~p11~0, main_~lk11~0, main_~p12~0, main_~lk12~0, main_~p13~0, main_~lk13~0, main_~p14~0, main_~lk14~0, 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;main_~p6~0 := main_#t~nondet12;havoc main_#t~nondet12;havoc main_~lk6~0;main_~p7~0 := main_#t~nondet13;havoc main_#t~nondet13;havoc main_~lk7~0;main_~p8~0 := main_#t~nondet14;havoc main_#t~nondet14;havoc main_~lk8~0;main_~p9~0 := main_#t~nondet15;havoc main_#t~nondet15;havoc main_~lk9~0;main_~p10~0 := main_#t~nondet16;havoc main_#t~nondet16;havoc main_~lk10~0;main_~p11~0 := main_#t~nondet17;havoc main_#t~nondet17;havoc main_~lk11~0;main_~p12~0 := main_#t~nondet18;havoc main_#t~nondet18;havoc main_~lk12~0;main_~p13~0 := main_#t~nondet19;havoc main_#t~nondet19;havoc main_~lk13~0;main_~p14~0 := main_#t~nondet20;havoc main_#t~nondet20;havoc main_~lk14~0;havoc main_~cond~0; 7968#L211-1 [2020-10-19 18:54:15,318 INFO L796 eck$LassoCheckResult]: Loop: 7968#L211-1 assume !false;main_~cond~0 := main_#t~nondet21;havoc main_#t~nondet21; 8160#L55 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;main_~lk6~0 := 0;main_~lk7~0 := 0;main_~lk8~0 := 0;main_~lk9~0 := 0;main_~lk10~0 := 0;main_~lk11~0 := 0;main_~lk12~0 := 0;main_~lk13~0 := 0;main_~lk14~0 := 0; 8158#L88 assume !(0 != main_~p1~0); 8156#L88-2 assume !(0 != main_~p2~0); 8153#L92-1 assume !(0 != main_~p3~0); 8150#L96-1 assume !(0 != main_~p4~0); 8147#L100-1 assume !(0 != main_~p5~0); 8139#L104-1 assume !(0 != main_~p6~0); 8141#L108-1 assume !(0 != main_~p7~0); 8131#L112-1 assume 0 != main_~p8~0;main_~lk8~0 := 1; 8132#L116-1 assume 0 != main_~p9~0;main_~lk9~0 := 1; 8123#L120-1 assume 0 != main_~p10~0;main_~lk10~0 := 1; 8124#L124-1 assume !(0 != main_~p11~0); 8115#L128-1 assume 0 != main_~p12~0;main_~lk12~0 := 1; 8116#L132-1 assume 0 != main_~p13~0;main_~lk13~0 := 1; 8107#L136-1 assume 0 != main_~p14~0;main_~lk14~0 := 1; 8108#L140-1 assume !(0 != main_~p1~0); 8095#L146-1 assume !(0 != main_~p2~0); 8097#L151-1 assume !(0 != main_~p3~0); 8083#L156-1 assume !(0 != main_~p4~0); 8085#L161-1 assume !(0 != main_~p5~0); 8186#L166-1 assume !(0 != main_~p6~0); 8184#L171-1 assume !(0 != main_~p7~0); 8183#L176-1 assume !(0 != main_~p8~0); 8181#L181-1 assume !(0 != main_~p9~0); 8178#L186-1 assume !(0 != main_~p10~0); 8174#L191-1 assume !(0 != main_~p11~0); 8171#L196-1 assume !(0 != main_~p12~0); 8168#L201-1 assume !(0 != main_~p13~0); 8165#L206-1 assume !(0 != main_~p14~0); 7968#L211-1 [2020-10-19 18:54:15,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:54:15,318 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 7 times [2020-10-19 18:54:15,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:54:15,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934462390] [2020-10-19 18:54:15,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:54:15,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:54:15,327 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:54:15,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:54:15,334 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:54:15,338 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:54:15,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:54:15,339 INFO L82 PathProgramCache]: Analyzing trace with hash 1055137337, now seen corresponding path program 1 times [2020-10-19 18:54:15,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:54:15,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798231673] [2020-10-19 18:54:15,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:54:15,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:54:15,361 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 18:54:15,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798231673] [2020-10-19 18:54:15,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:54:15,362 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 18:54:15,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584047229] [2020-10-19 18:54:15,363 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-10-19 18:54:15,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:54:15,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:54:15,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:54:15,364 INFO L87 Difference]: Start difference. First operand 2626 states and 4034 transitions. cyclomatic complexity: 1472 Second operand 3 states. [2020-10-19 18:54:15,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:54:15,404 INFO L93 Difference]: Finished difference Result 5186 states and 7874 transitions. [2020-10-19 18:54:15,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:54:15,405 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 5186 states and 7874 transitions. [2020-10-19 18:54:15,448 INFO L131 ngComponentsAnalysis]: Automaton has 128 accepting balls. 5184 [2020-10-19 18:54:15,487 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 5186 states to 5186 states and 7874 transitions. [2020-10-19 18:54:15,487 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5186 [2020-10-19 18:54:15,496 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5186 [2020-10-19 18:54:15,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5186 states and 7874 transitions. [2020-10-19 18:54:15,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-19 18:54:15,513 INFO L691 BuchiCegarLoop]: Abstraction has 5186 states and 7874 transitions. [2020-10-19 18:54:15,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5186 states and 7874 transitions. [2020-10-19 18:54:15,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5186 to 5186. [2020-10-19 18:54:15,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5186 states. [2020-10-19 18:54:15,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5186 states to 5186 states and 7874 transitions. [2020-10-19 18:54:15,691 INFO L714 BuchiCegarLoop]: Abstraction has 5186 states and 7874 transitions. [2020-10-19 18:54:15,691 INFO L594 BuchiCegarLoop]: Abstraction has 5186 states and 7874 transitions. [2020-10-19 18:54:15,691 INFO L427 BuchiCegarLoop]: ======== Iteration 8============ [2020-10-19 18:54:15,692 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5186 states and 7874 transitions. [2020-10-19 18:54:15,727 INFO L131 ngComponentsAnalysis]: Automaton has 128 accepting balls. 5184 [2020-10-19 18:54:15,727 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:54:15,727 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:54:15,728 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-10-19 18:54:15,728 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:54:15,729 INFO L794 eck$LassoCheckResult]: Stem: 15815#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(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 15785#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_#t~nondet13, main_#t~nondet14, main_#t~nondet15, main_#t~nondet16, main_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_#t~nondet20, main_#t~nondet21, 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_~p6~0, main_~lk6~0, main_~p7~0, main_~lk7~0, main_~p8~0, main_~lk8~0, main_~p9~0, main_~lk9~0, main_~p10~0, main_~lk10~0, main_~p11~0, main_~lk11~0, main_~p12~0, main_~lk12~0, main_~p13~0, main_~lk13~0, main_~p14~0, main_~lk14~0, 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;main_~p6~0 := main_#t~nondet12;havoc main_#t~nondet12;havoc main_~lk6~0;main_~p7~0 := main_#t~nondet13;havoc main_#t~nondet13;havoc main_~lk7~0;main_~p8~0 := main_#t~nondet14;havoc main_#t~nondet14;havoc main_~lk8~0;main_~p9~0 := main_#t~nondet15;havoc main_#t~nondet15;havoc main_~lk9~0;main_~p10~0 := main_#t~nondet16;havoc main_#t~nondet16;havoc main_~lk10~0;main_~p11~0 := main_#t~nondet17;havoc main_#t~nondet17;havoc main_~lk11~0;main_~p12~0 := main_#t~nondet18;havoc main_#t~nondet18;havoc main_~lk12~0;main_~p13~0 := main_#t~nondet19;havoc main_#t~nondet19;havoc main_~lk13~0;main_~p14~0 := main_#t~nondet20;havoc main_#t~nondet20;havoc main_~lk14~0;havoc main_~cond~0; 15786#L211-1 [2020-10-19 18:54:15,729 INFO L796 eck$LassoCheckResult]: Loop: 15786#L211-1 assume !false;main_~cond~0 := main_#t~nondet21;havoc main_#t~nondet21; 15907#L55 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;main_~lk6~0 := 0;main_~lk7~0 := 0;main_~lk8~0 := 0;main_~lk9~0 := 0;main_~lk10~0 := 0;main_~lk11~0 := 0;main_~lk12~0 := 0;main_~lk13~0 := 0;main_~lk14~0 := 0; 15904#L88 assume !(0 != main_~p1~0); 15900#L88-2 assume !(0 != main_~p2~0); 15897#L92-1 assume !(0 != main_~p3~0); 15894#L96-1 assume !(0 != main_~p4~0); 15890#L100-1 assume !(0 != main_~p5~0); 15891#L104-1 assume !(0 != main_~p6~0); 15980#L108-1 assume !(0 != main_~p7~0); 15976#L112-1 assume !(0 != main_~p8~0); 15974#L116-1 assume 0 != main_~p9~0;main_~lk9~0 := 1; 15972#L120-1 assume 0 != main_~p10~0;main_~lk10~0 := 1; 15970#L124-1 assume !(0 != main_~p11~0); 15968#L128-1 assume 0 != main_~p12~0;main_~lk12~0 := 1; 15966#L132-1 assume 0 != main_~p13~0;main_~lk13~0 := 1; 15964#L136-1 assume 0 != main_~p14~0;main_~lk14~0 := 1; 15960#L140-1 assume !(0 != main_~p1~0); 15956#L146-1 assume !(0 != main_~p2~0); 15953#L151-1 assume !(0 != main_~p3~0); 15948#L156-1 assume !(0 != main_~p4~0); 15946#L161-1 assume !(0 != main_~p5~0); 15943#L166-1 assume !(0 != main_~p6~0); 15939#L171-1 assume !(0 != main_~p7~0); 15935#L176-1 assume !(0 != main_~p8~0); 15932#L181-1 assume !(0 != main_~p9~0); 15927#L186-1 assume !(0 != main_~p10~0); 15924#L191-1 assume !(0 != main_~p11~0); 15920#L196-1 assume !(0 != main_~p12~0); 15916#L201-1 assume !(0 != main_~p13~0); 15912#L206-1 assume !(0 != main_~p14~0); 15786#L211-1 [2020-10-19 18:54:15,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:54:15,730 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 8 times [2020-10-19 18:54:15,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:54:15,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831755042] [2020-10-19 18:54:15,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:54:15,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:54:15,738 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:54:15,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:54:15,744 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:54:15,748 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:54:15,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:54:15,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1477839163, now seen corresponding path program 1 times [2020-10-19 18:54:15,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:54:15,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597078243] [2020-10-19 18:54:15,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:54:15,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:54:15,771 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 18:54:15,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597078243] [2020-10-19 18:54:15,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:54:15,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 18:54:15,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567296108] [2020-10-19 18:54:15,774 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-10-19 18:54:15,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:54:15,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:54:15,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:54:15,775 INFO L87 Difference]: Start difference. First operand 5186 states and 7874 transitions. cyclomatic complexity: 2816 Second operand 3 states. [2020-10-19 18:54:15,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:54:15,839 INFO L93 Difference]: Finished difference Result 10242 states and 15362 transitions. [2020-10-19 18:54:15,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:54:15,840 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10242 states and 15362 transitions. [2020-10-19 18:54:15,900 INFO L131 ngComponentsAnalysis]: Automaton has 256 accepting balls. 10240 [2020-10-19 18:54:15,967 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10242 states to 10242 states and 15362 transitions. [2020-10-19 18:54:15,968 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10242 [2020-10-19 18:54:15,978 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10242 [2020-10-19 18:54:15,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10242 states and 15362 transitions. [2020-10-19 18:54:16,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-19 18:54:16,007 INFO L691 BuchiCegarLoop]: Abstraction has 10242 states and 15362 transitions. [2020-10-19 18:54:16,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10242 states and 15362 transitions. [2020-10-19 18:54:16,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10242 to 10242. [2020-10-19 18:54:16,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10242 states. [2020-10-19 18:54:16,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10242 states to 10242 states and 15362 transitions. [2020-10-19 18:54:16,315 INFO L714 BuchiCegarLoop]: Abstraction has 10242 states and 15362 transitions. [2020-10-19 18:54:16,315 INFO L594 BuchiCegarLoop]: Abstraction has 10242 states and 15362 transitions. [2020-10-19 18:54:16,315 INFO L427 BuchiCegarLoop]: ======== Iteration 9============ [2020-10-19 18:54:16,315 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10242 states and 15362 transitions. [2020-10-19 18:54:16,351 INFO L131 ngComponentsAnalysis]: Automaton has 256 accepting balls. 10240 [2020-10-19 18:54:16,351 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:54:16,352 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:54:16,352 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-10-19 18:54:16,352 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:54:16,353 INFO L794 eck$LassoCheckResult]: Stem: 31249#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(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 31218#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_#t~nondet13, main_#t~nondet14, main_#t~nondet15, main_#t~nondet16, main_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_#t~nondet20, main_#t~nondet21, 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_~p6~0, main_~lk6~0, main_~p7~0, main_~lk7~0, main_~p8~0, main_~lk8~0, main_~p9~0, main_~lk9~0, main_~p10~0, main_~lk10~0, main_~p11~0, main_~lk11~0, main_~p12~0, main_~lk12~0, main_~p13~0, main_~lk13~0, main_~p14~0, main_~lk14~0, 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;main_~p6~0 := main_#t~nondet12;havoc main_#t~nondet12;havoc main_~lk6~0;main_~p7~0 := main_#t~nondet13;havoc main_#t~nondet13;havoc main_~lk7~0;main_~p8~0 := main_#t~nondet14;havoc main_#t~nondet14;havoc main_~lk8~0;main_~p9~0 := main_#t~nondet15;havoc main_#t~nondet15;havoc main_~lk9~0;main_~p10~0 := main_#t~nondet16;havoc main_#t~nondet16;havoc main_~lk10~0;main_~p11~0 := main_#t~nondet17;havoc main_#t~nondet17;havoc main_~lk11~0;main_~p12~0 := main_#t~nondet18;havoc main_#t~nondet18;havoc main_~lk12~0;main_~p13~0 := main_#t~nondet19;havoc main_#t~nondet19;havoc main_~lk13~0;main_~p14~0 := main_#t~nondet20;havoc main_#t~nondet20;havoc main_~lk14~0;havoc main_~cond~0; 31219#L211-1 [2020-10-19 18:54:16,353 INFO L796 eck$LassoCheckResult]: Loop: 31219#L211-1 assume !false;main_~cond~0 := main_#t~nondet21;havoc main_#t~nondet21; 31390#L55 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;main_~lk6~0 := 0;main_~lk7~0 := 0;main_~lk8~0 := 0;main_~lk9~0 := 0;main_~lk10~0 := 0;main_~lk11~0 := 0;main_~lk12~0 := 0;main_~lk13~0 := 0;main_~lk14~0 := 0; 31387#L88 assume !(0 != main_~p1~0); 31383#L88-2 assume !(0 != main_~p2~0); 31380#L92-1 assume !(0 != main_~p3~0); 31377#L96-1 assume !(0 != main_~p4~0); 31370#L100-1 assume !(0 != main_~p5~0); 31309#L104-1 assume !(0 != main_~p6~0); 31310#L108-1 assume !(0 != main_~p7~0); 31491#L112-1 assume !(0 != main_~p8~0); 31489#L116-1 assume !(0 != main_~p9~0); 31478#L120-1 assume 0 != main_~p10~0;main_~lk10~0 := 1; 31473#L124-1 assume !(0 != main_~p11~0); 31469#L128-1 assume 0 != main_~p12~0;main_~lk12~0 := 1; 31465#L132-1 assume 0 != main_~p13~0;main_~lk13~0 := 1; 31460#L136-1 assume 0 != main_~p14~0;main_~lk14~0 := 1; 31451#L140-1 assume !(0 != main_~p1~0); 31448#L146-1 assume !(0 != main_~p2~0); 31437#L151-1 assume !(0 != main_~p3~0); 31428#L156-1 assume !(0 != main_~p4~0); 31371#L161-1 assume !(0 != main_~p5~0); 31373#L166-1 assume !(0 != main_~p6~0); 31422#L171-1 assume !(0 != main_~p7~0); 31418#L176-1 assume !(0 != main_~p8~0); 31414#L181-1 assume !(0 != main_~p9~0); 31410#L186-1 assume !(0 != main_~p10~0); 31407#L191-1 assume !(0 != main_~p11~0); 31403#L196-1 assume !(0 != main_~p12~0); 31399#L201-1 assume !(0 != main_~p13~0); 31395#L206-1 assume !(0 != main_~p14~0); 31219#L211-1 [2020-10-19 18:54:16,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:54:16,354 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 9 times [2020-10-19 18:54:16,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:54:16,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813678011] [2020-10-19 18:54:16,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:54:16,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:54:16,363 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:54:16,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:54:16,368 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:54:16,372 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:54:16,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:54:16,373 INFO L82 PathProgramCache]: Analyzing trace with hash 660190713, now seen corresponding path program 1 times [2020-10-19 18:54:16,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:54:16,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665907933] [2020-10-19 18:54:16,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:54:16,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:54:16,396 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 18:54:16,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665907933] [2020-10-19 18:54:16,397 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 [3] imperfect sequences [] total 3 [2020-10-19 18:54:16,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280188455] [2020-10-19 18:54:16,398 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 18:54:16,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:54:16,399 INFO L87 Difference]: Start difference. First operand 10242 states and 15362 transitions. cyclomatic complexity: 5376 Second operand 3 states. [2020-10-19 18:54:16,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:54:16,455 INFO L93 Difference]: Finished difference Result 20226 states and 29954 transitions. [2020-10-19 18:54:16,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:54:16,456 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20226 states and 29954 transitions. [2020-10-19 18:54:16,554 INFO L131 ngComponentsAnalysis]: Automaton has 512 accepting balls. 20224 [2020-10-19 18:54:16,630 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20226 states to 20226 states and 29954 transitions. [2020-10-19 18:54:16,631 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20226 [2020-10-19 18:54:16,644 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20226 [2020-10-19 18:54:16,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20226 states and 29954 transitions. [2020-10-19 18:54:16,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-19 18:54:16,678 INFO L691 BuchiCegarLoop]: Abstraction has 20226 states and 29954 transitions. [2020-10-19 18:54:16,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20226 states and 29954 transitions. [2020-10-19 18:54:16,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20226 to 20226. [2020-10-19 18:54:16,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20226 states. [2020-10-19 18:54:17,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20226 states to 20226 states and 29954 transitions. [2020-10-19 18:54:17,001 INFO L714 BuchiCegarLoop]: Abstraction has 20226 states and 29954 transitions. [2020-10-19 18:54:17,001 INFO L594 BuchiCegarLoop]: Abstraction has 20226 states and 29954 transitions. [2020-10-19 18:54:17,001 INFO L427 BuchiCegarLoop]: ======== Iteration 10============ [2020-10-19 18:54:17,001 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20226 states and 29954 transitions. [2020-10-19 18:54:17,061 INFO L131 ngComponentsAnalysis]: Automaton has 512 accepting balls. 20224 [2020-10-19 18:54:17,062 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:54:17,062 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:54:17,063 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-10-19 18:54:17,063 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:54:17,063 INFO L794 eck$LassoCheckResult]: Stem: 61724#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(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 61692#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_#t~nondet13, main_#t~nondet14, main_#t~nondet15, main_#t~nondet16, main_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_#t~nondet20, main_#t~nondet21, 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_~p6~0, main_~lk6~0, main_~p7~0, main_~lk7~0, main_~p8~0, main_~lk8~0, main_~p9~0, main_~lk9~0, main_~p10~0, main_~lk10~0, main_~p11~0, main_~lk11~0, main_~p12~0, main_~lk12~0, main_~p13~0, main_~lk13~0, main_~p14~0, main_~lk14~0, 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;main_~p6~0 := main_#t~nondet12;havoc main_#t~nondet12;havoc main_~lk6~0;main_~p7~0 := main_#t~nondet13;havoc main_#t~nondet13;havoc main_~lk7~0;main_~p8~0 := main_#t~nondet14;havoc main_#t~nondet14;havoc main_~lk8~0;main_~p9~0 := main_#t~nondet15;havoc main_#t~nondet15;havoc main_~lk9~0;main_~p10~0 := main_#t~nondet16;havoc main_#t~nondet16;havoc main_~lk10~0;main_~p11~0 := main_#t~nondet17;havoc main_#t~nondet17;havoc main_~lk11~0;main_~p12~0 := main_#t~nondet18;havoc main_#t~nondet18;havoc main_~lk12~0;main_~p13~0 := main_#t~nondet19;havoc main_#t~nondet19;havoc main_~lk13~0;main_~p14~0 := main_#t~nondet20;havoc main_#t~nondet20;havoc main_~lk14~0;havoc main_~cond~0; 61693#L211-1 [2020-10-19 18:54:17,063 INFO L796 eck$LassoCheckResult]: Loop: 61693#L211-1 assume !false;main_~cond~0 := main_#t~nondet21;havoc main_#t~nondet21; 62130#L55 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;main_~lk6~0 := 0;main_~lk7~0 := 0;main_~lk8~0 := 0;main_~lk9~0 := 0;main_~lk10~0 := 0;main_~lk11~0 := 0;main_~lk12~0 := 0;main_~lk13~0 := 0;main_~lk14~0 := 0; 62127#L88 assume !(0 != main_~p1~0); 62123#L88-2 assume !(0 != main_~p2~0); 62120#L92-1 assume !(0 != main_~p3~0); 62117#L96-1 assume !(0 != main_~p4~0); 62110#L100-1 assume !(0 != main_~p5~0); 62111#L104-1 assume !(0 != main_~p6~0); 62065#L108-1 assume !(0 != main_~p7~0); 62067#L112-1 assume !(0 != main_~p8~0); 62196#L116-1 assume !(0 != main_~p9~0); 62193#L120-1 assume !(0 != main_~p10~0); 62191#L124-1 assume !(0 != main_~p11~0); 62189#L128-1 assume 0 != main_~p12~0;main_~lk12~0 := 1; 62187#L132-1 assume 0 != main_~p13~0;main_~lk13~0 := 1; 62183#L136-1 assume 0 != main_~p14~0;main_~lk14~0 := 1; 62178#L140-1 assume !(0 != main_~p1~0); 62176#L146-1 assume !(0 != main_~p2~0); 62172#L151-1 assume !(0 != main_~p3~0); 62166#L156-1 assume !(0 != main_~p4~0); 62164#L161-1 assume !(0 != main_~p5~0); 62160#L166-1 assume !(0 != main_~p6~0); 62112#L171-1 assume !(0 != main_~p7~0); 62113#L176-1 assume !(0 != main_~p8~0); 62154#L181-1 assume !(0 != main_~p9~0); 62150#L186-1 assume !(0 != main_~p10~0); 62147#L191-1 assume !(0 != main_~p11~0); 62143#L196-1 assume !(0 != main_~p12~0); 62139#L201-1 assume !(0 != main_~p13~0); 62135#L206-1 assume !(0 != main_~p14~0); 61693#L211-1 [2020-10-19 18:54:17,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:54:17,064 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 10 times [2020-10-19 18:54:17,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:54:17,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679838810] [2020-10-19 18:54:17,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:54:17,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:54:17,071 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:54:17,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:54:17,076 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:54:17,079 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:54:17,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:54:17,080 INFO L82 PathProgramCache]: Analyzing trace with hash -1028753029, now seen corresponding path program 1 times [2020-10-19 18:54:17,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:54:17,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586690266] [2020-10-19 18:54:17,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:54:17,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:54:17,099 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 18:54:17,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586690266] [2020-10-19 18:54:17,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:54:17,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 18:54:17,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410760322] [2020-10-19 18:54:17,101 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-10-19 18:54:17,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:54:17,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:54:17,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:54:17,102 INFO L87 Difference]: Start difference. First operand 20226 states and 29954 transitions. cyclomatic complexity: 10240 Second operand 3 states. [2020-10-19 18:54:17,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:54:17,203 INFO L93 Difference]: Finished difference Result 39938 states and 58370 transitions. [2020-10-19 18:54:17,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:54:17,204 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 39938 states and 58370 transitions. [2020-10-19 18:54:17,395 INFO L131 ngComponentsAnalysis]: Automaton has 1024 accepting balls. 39936 [2020-10-19 18:54:17,577 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 39938 states to 39938 states and 58370 transitions. [2020-10-19 18:54:17,577 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39938 [2020-10-19 18:54:17,605 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 39938 [2020-10-19 18:54:17,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39938 states and 58370 transitions. [2020-10-19 18:54:17,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-19 18:54:17,645 INFO L691 BuchiCegarLoop]: Abstraction has 39938 states and 58370 transitions. [2020-10-19 18:54:17,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39938 states and 58370 transitions. [2020-10-19 18:54:18,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39938 to 39938. [2020-10-19 18:54:18,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39938 states. [2020-10-19 18:54:18,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39938 states to 39938 states and 58370 transitions. [2020-10-19 18:54:18,446 INFO L714 BuchiCegarLoop]: Abstraction has 39938 states and 58370 transitions. [2020-10-19 18:54:18,447 INFO L594 BuchiCegarLoop]: Abstraction has 39938 states and 58370 transitions. [2020-10-19 18:54:18,447 INFO L427 BuchiCegarLoop]: ======== Iteration 11============ [2020-10-19 18:54:18,447 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 39938 states and 58370 transitions. [2020-10-19 18:54:18,571 INFO L131 ngComponentsAnalysis]: Automaton has 1024 accepting balls. 39936 [2020-10-19 18:54:18,572 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:54:18,572 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:54:18,573 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-10-19 18:54:18,573 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:54:18,574 INFO L794 eck$LassoCheckResult]: Stem: 121900#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(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 121862#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_#t~nondet13, main_#t~nondet14, main_#t~nondet15, main_#t~nondet16, main_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_#t~nondet20, main_#t~nondet21, 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_~p6~0, main_~lk6~0, main_~p7~0, main_~lk7~0, main_~p8~0, main_~lk8~0, main_~p9~0, main_~lk9~0, main_~p10~0, main_~lk10~0, main_~p11~0, main_~lk11~0, main_~p12~0, main_~lk12~0, main_~p13~0, main_~lk13~0, main_~p14~0, main_~lk14~0, 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;main_~p6~0 := main_#t~nondet12;havoc main_#t~nondet12;havoc main_~lk6~0;main_~p7~0 := main_#t~nondet13;havoc main_#t~nondet13;havoc main_~lk7~0;main_~p8~0 := main_#t~nondet14;havoc main_#t~nondet14;havoc main_~lk8~0;main_~p9~0 := main_#t~nondet15;havoc main_#t~nondet15;havoc main_~lk9~0;main_~p10~0 := main_#t~nondet16;havoc main_#t~nondet16;havoc main_~lk10~0;main_~p11~0 := main_#t~nondet17;havoc main_#t~nondet17;havoc main_~lk11~0;main_~p12~0 := main_#t~nondet18;havoc main_#t~nondet18;havoc main_~lk12~0;main_~p13~0 := main_#t~nondet19;havoc main_#t~nondet19;havoc main_~lk13~0;main_~p14~0 := main_#t~nondet20;havoc main_#t~nondet20;havoc main_~lk14~0;havoc main_~cond~0; 121863#L211-1 [2020-10-19 18:54:18,574 INFO L796 eck$LassoCheckResult]: Loop: 121863#L211-1 assume !false;main_~cond~0 := main_#t~nondet21;havoc main_#t~nondet21; 122059#L55 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;main_~lk6~0 := 0;main_~lk7~0 := 0;main_~lk8~0 := 0;main_~lk9~0 := 0;main_~lk10~0 := 0;main_~lk11~0 := 0;main_~lk12~0 := 0;main_~lk13~0 := 0;main_~lk14~0 := 0; 122055#L88 assume !(0 != main_~p1~0); 122048#L88-2 assume !(0 != main_~p2~0); 122043#L92-1 assume !(0 != main_~p3~0); 122036#L96-1 assume !(0 != main_~p4~0); 122028#L100-1 assume !(0 != main_~p5~0); 122020#L104-1 assume !(0 != main_~p6~0); 122012#L108-1 assume !(0 != main_~p7~0); 122004#L112-1 assume !(0 != main_~p8~0); 121996#L116-1 assume !(0 != main_~p9~0); 121988#L120-1 assume !(0 != main_~p10~0); 121983#L124-1 assume !(0 != main_~p11~0); 121978#L128-1 assume !(0 != main_~p12~0); 121972#L132-1 assume 0 != main_~p13~0;main_~lk13~0 := 1; 121973#L136-1 assume 0 != main_~p14~0;main_~lk14~0 := 1; 121964#L140-1 assume !(0 != main_~p1~0); 121966#L146-1 assume !(0 != main_~p2~0); 122148#L151-1 assume !(0 != main_~p3~0); 122143#L156-1 assume !(0 != main_~p4~0); 122109#L161-1 assume !(0 != main_~p5~0); 122101#L166-1 assume !(0 != main_~p6~0); 122094#L171-1 assume !(0 != main_~p7~0); 122090#L176-1 assume !(0 != main_~p8~0); 122088#L181-1 assume !(0 != main_~p9~0); 122084#L186-1 assume !(0 != main_~p10~0); 122083#L191-1 assume !(0 != main_~p11~0); 122081#L196-1 assume !(0 != main_~p12~0); 122080#L201-1 assume !(0 != main_~p13~0); 122068#L206-1 assume !(0 != main_~p14~0); 121863#L211-1 [2020-10-19 18:54:18,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:54:18,575 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 11 times [2020-10-19 18:54:18,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:54:18,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864210648] [2020-10-19 18:54:18,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:54:18,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:54:18,585 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:54:18,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:54:18,596 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:54:18,606 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:54:18,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:54:18,607 INFO L82 PathProgramCache]: Analyzing trace with hash 1677866365, now seen corresponding path program 1 times [2020-10-19 18:54:18,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:54:18,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396228693] [2020-10-19 18:54:18,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:54:18,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:54:18,630 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 18:54:18,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396228693] [2020-10-19 18:54:18,630 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:54:18,630 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 18:54:18,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392226477] [2020-10-19 18:54:18,631 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-10-19 18:54:18,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:54:18,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:54:18,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:54:18,632 INFO L87 Difference]: Start difference. First operand 39938 states and 58370 transitions. cyclomatic complexity: 19456 Second operand 3 states. [2020-10-19 18:54:18,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:54:18,818 INFO L93 Difference]: Finished difference Result 78850 states and 113666 transitions. [2020-10-19 18:54:18,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:54:18,819 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 78850 states and 113666 transitions. [2020-10-19 18:54:19,147 INFO L131 ngComponentsAnalysis]: Automaton has 2048 accepting balls. 78848 [2020-10-19 18:54:19,929 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 78850 states to 78850 states and 113666 transitions. [2020-10-19 18:54:19,930 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 78850 [2020-10-19 18:54:19,960 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 78850 [2020-10-19 18:54:19,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 78850 states and 113666 transitions. [2020-10-19 18:54:20,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-19 18:54:20,001 INFO L691 BuchiCegarLoop]: Abstraction has 78850 states and 113666 transitions. [2020-10-19 18:54:20,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78850 states and 113666 transitions. [2020-10-19 18:54:20,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78850 to 78850. [2020-10-19 18:54:20,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78850 states. [2020-10-19 18:54:20,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78850 states to 78850 states and 113666 transitions. [2020-10-19 18:54:20,672 INFO L714 BuchiCegarLoop]: Abstraction has 78850 states and 113666 transitions. [2020-10-19 18:54:20,672 INFO L594 BuchiCegarLoop]: Abstraction has 78850 states and 113666 transitions. [2020-10-19 18:54:20,672 INFO L427 BuchiCegarLoop]: ======== Iteration 12============ [2020-10-19 18:54:20,672 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 78850 states and 113666 transitions. [2020-10-19 18:54:21,274 INFO L131 ngComponentsAnalysis]: Automaton has 2048 accepting balls. 78848 [2020-10-19 18:54:21,275 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:54:21,275 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:54:21,276 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-10-19 18:54:21,276 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:54:21,276 INFO L794 eck$LassoCheckResult]: Stem: 240693#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(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 240655#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_#t~nondet13, main_#t~nondet14, main_#t~nondet15, main_#t~nondet16, main_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_#t~nondet20, main_#t~nondet21, 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_~p6~0, main_~lk6~0, main_~p7~0, main_~lk7~0, main_~p8~0, main_~lk8~0, main_~p9~0, main_~lk9~0, main_~p10~0, main_~lk10~0, main_~p11~0, main_~lk11~0, main_~p12~0, main_~lk12~0, main_~p13~0, main_~lk13~0, main_~p14~0, main_~lk14~0, 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;main_~p6~0 := main_#t~nondet12;havoc main_#t~nondet12;havoc main_~lk6~0;main_~p7~0 := main_#t~nondet13;havoc main_#t~nondet13;havoc main_~lk7~0;main_~p8~0 := main_#t~nondet14;havoc main_#t~nondet14;havoc main_~lk8~0;main_~p9~0 := main_#t~nondet15;havoc main_#t~nondet15;havoc main_~lk9~0;main_~p10~0 := main_#t~nondet16;havoc main_#t~nondet16;havoc main_~lk10~0;main_~p11~0 := main_#t~nondet17;havoc main_#t~nondet17;havoc main_~lk11~0;main_~p12~0 := main_#t~nondet18;havoc main_#t~nondet18;havoc main_~lk12~0;main_~p13~0 := main_#t~nondet19;havoc main_#t~nondet19;havoc main_~lk13~0;main_~p14~0 := main_#t~nondet20;havoc main_#t~nondet20;havoc main_~lk14~0;havoc main_~cond~0; 240656#L211-1 [2020-10-19 18:54:21,276 INFO L796 eck$LassoCheckResult]: Loop: 240656#L211-1 assume !false;main_~cond~0 := main_#t~nondet21;havoc main_#t~nondet21; 240912#L55 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;main_~lk6~0 := 0;main_~lk7~0 := 0;main_~lk8~0 := 0;main_~lk9~0 := 0;main_~lk10~0 := 0;main_~lk11~0 := 0;main_~lk12~0 := 0;main_~lk13~0 := 0;main_~lk14~0 := 0; 240907#L88 assume !(0 != main_~p1~0); 240901#L88-2 assume !(0 != main_~p2~0); 240897#L92-1 assume !(0 != main_~p3~0); 240892#L96-1 assume !(0 != main_~p4~0); 240885#L100-1 assume !(0 != main_~p5~0); 240883#L104-1 assume !(0 != main_~p6~0); 240881#L108-1 assume !(0 != main_~p7~0); 240879#L112-1 assume !(0 != main_~p8~0); 240876#L116-1 assume !(0 != main_~p9~0); 240873#L120-1 assume !(0 != main_~p10~0); 240777#L124-1 assume !(0 != main_~p11~0); 240773#L128-1 assume !(0 != main_~p12~0); 240762#L132-1 assume !(0 != main_~p13~0); 240763#L136-1 assume 0 != main_~p14~0;main_~lk14~0 := 1; 240752#L140-1 assume !(0 != main_~p1~0); 240754#L146-1 assume !(0 != main_~p2~0); 241013#L151-1 assume !(0 != main_~p3~0); 241010#L156-1 assume !(0 != main_~p4~0); 241008#L161-1 assume !(0 != main_~p5~0); 241005#L166-1 assume !(0 != main_~p6~0); 241001#L171-1 assume !(0 != main_~p7~0); 240997#L176-1 assume !(0 != main_~p8~0); 240938#L181-1 assume !(0 != main_~p9~0); 240934#L186-1 assume !(0 != main_~p10~0); 240925#L191-1 assume !(0 != main_~p11~0); 240922#L196-1 assume !(0 != main_~p12~0); 240920#L201-1 assume !(0 != main_~p13~0); 240918#L206-1 assume !(0 != main_~p14~0); 240656#L211-1 [2020-10-19 18:54:21,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:54:21,277 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 12 times [2020-10-19 18:54:21,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:54:21,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788006824] [2020-10-19 18:54:21,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:54:21,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:54:21,285 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:54:21,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:54:21,290 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:54:21,296 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:54:21,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:54:21,296 INFO L82 PathProgramCache]: Analyzing trace with hash 656798011, now seen corresponding path program 1 times [2020-10-19 18:54:21,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:54:21,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932393500] [2020-10-19 18:54:21,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:54:21,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:54:21,322 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 18:54:21,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932393500] [2020-10-19 18:54:21,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:54:21,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-19 18:54:21,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319061715] [2020-10-19 18:54:21,324 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-10-19 18:54:21,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:54:21,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:54:21,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:54:21,324 INFO L87 Difference]: Start difference. First operand 78850 states and 113666 transitions. cyclomatic complexity: 36864 Second operand 3 states. [2020-10-19 18:54:21,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:54:21,632 INFO L93 Difference]: Finished difference Result 155650 states and 221186 transitions. [2020-10-19 18:54:21,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:54:21,634 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 155650 states and 221186 transitions. [2020-10-19 18:54:22,172 INFO L131 ngComponentsAnalysis]: Automaton has 4096 accepting balls. 155648 [2020-10-19 18:54:22,523 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 155650 states to 155650 states and 221186 transitions. [2020-10-19 18:54:22,523 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 155650 [2020-10-19 18:54:22,613 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 155650 [2020-10-19 18:54:22,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 155650 states and 221186 transitions. [2020-10-19 18:54:22,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-19 18:54:22,718 INFO L691 BuchiCegarLoop]: Abstraction has 155650 states and 221186 transitions. [2020-10-19 18:54:22,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155650 states and 221186 transitions. [2020-10-19 18:54:24,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155650 to 155650. [2020-10-19 18:54:24,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155650 states. [2020-10-19 18:54:25,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155650 states to 155650 states and 221186 transitions. [2020-10-19 18:54:25,021 INFO L714 BuchiCegarLoop]: Abstraction has 155650 states and 221186 transitions. [2020-10-19 18:54:25,021 INFO L594 BuchiCegarLoop]: Abstraction has 155650 states and 221186 transitions. [2020-10-19 18:54:25,021 INFO L427 BuchiCegarLoop]: ======== Iteration 13============ [2020-10-19 18:54:25,022 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 155650 states and 221186 transitions. [2020-10-19 18:54:26,445 INFO L131 ngComponentsAnalysis]: Automaton has 4096 accepting balls. 155648 [2020-10-19 18:54:26,445 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:54:26,445 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:54:26,447 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-10-19 18:54:26,447 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:54:26,448 INFO L794 eck$LassoCheckResult]: Stem: 475196#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(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 475161#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_#t~nondet13, main_#t~nondet14, main_#t~nondet15, main_#t~nondet16, main_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_#t~nondet20, main_#t~nondet21, 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_~p6~0, main_~lk6~0, main_~p7~0, main_~lk7~0, main_~p8~0, main_~lk8~0, main_~p9~0, main_~lk9~0, main_~p10~0, main_~lk10~0, main_~p11~0, main_~lk11~0, main_~p12~0, main_~lk12~0, main_~p13~0, main_~lk13~0, main_~p14~0, main_~lk14~0, 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;main_~p6~0 := main_#t~nondet12;havoc main_#t~nondet12;havoc main_~lk6~0;main_~p7~0 := main_#t~nondet13;havoc main_#t~nondet13;havoc main_~lk7~0;main_~p8~0 := main_#t~nondet14;havoc main_#t~nondet14;havoc main_~lk8~0;main_~p9~0 := main_#t~nondet15;havoc main_#t~nondet15;havoc main_~lk9~0;main_~p10~0 := main_#t~nondet16;havoc main_#t~nondet16;havoc main_~lk10~0;main_~p11~0 := main_#t~nondet17;havoc main_#t~nondet17;havoc main_~lk11~0;main_~p12~0 := main_#t~nondet18;havoc main_#t~nondet18;havoc main_~lk12~0;main_~p13~0 := main_#t~nondet19;havoc main_#t~nondet19;havoc main_~lk13~0;main_~p14~0 := main_#t~nondet20;havoc main_#t~nondet20;havoc main_~lk14~0;havoc main_~cond~0; 475162#L211-1 [2020-10-19 18:54:26,448 INFO L796 eck$LassoCheckResult]: Loop: 475162#L211-1 assume !false;main_~cond~0 := main_#t~nondet21;havoc main_#t~nondet21; 476638#L55 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;main_~lk6~0 := 0;main_~lk7~0 := 0;main_~lk8~0 := 0;main_~lk9~0 := 0;main_~lk10~0 := 0;main_~lk11~0 := 0;main_~lk12~0 := 0;main_~lk13~0 := 0;main_~lk14~0 := 0; 476628#L88 assume !(0 != main_~p1~0); 476630#L88-2 assume !(0 != main_~p2~0); 476771#L92-1 assume !(0 != main_~p3~0); 476770#L96-1 assume !(0 != main_~p4~0); 476764#L100-1 assume !(0 != main_~p5~0); 476756#L104-1 assume !(0 != main_~p6~0); 476750#L108-1 assume !(0 != main_~p7~0); 476746#L112-1 assume !(0 != main_~p8~0); 476742#L116-1 assume !(0 != main_~p9~0); 476735#L120-1 assume !(0 != main_~p10~0); 476737#L124-1 assume !(0 != main_~p11~0); 476726#L128-1 assume !(0 != main_~p12~0); 476728#L132-1 assume !(0 != main_~p13~0); 476717#L136-1 assume !(0 != main_~p14~0); 476719#L140-1 assume !(0 != main_~p1~0); 476705#L146-1 assume !(0 != main_~p2~0); 476707#L151-1 assume !(0 != main_~p3~0); 476695#L156-1 assume !(0 != main_~p4~0); 476696#L161-1 assume !(0 != main_~p5~0); 476685#L166-1 assume !(0 != main_~p6~0); 476686#L171-1 assume !(0 != main_~p7~0); 476674#L176-1 assume !(0 != main_~p8~0); 476676#L181-1 assume !(0 != main_~p9~0); 476797#L186-1 assume !(0 != main_~p10~0); 476795#L191-1 assume !(0 != main_~p11~0); 476792#L196-1 assume !(0 != main_~p12~0); 476790#L201-1 assume !(0 != main_~p13~0); 476789#L206-1 assume !(0 != main_~p14~0); 475162#L211-1 [2020-10-19 18:54:26,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:54:26,449 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 13 times [2020-10-19 18:54:26,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:54:26,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981212076] [2020-10-19 18:54:26,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:54:26,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:54:26,465 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:54:26,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:54:26,473 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:54:26,479 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:54:26,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:54:26,480 INFO L82 PathProgramCache]: Analyzing trace with hash -623065667, now seen corresponding path program 1 times [2020-10-19 18:54:26,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:54:26,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214817015] [2020-10-19 18:54:26,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:54:26,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:54:26,485 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:54:26,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:54:26,488 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:54:26,496 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:54:26,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:54:26,497 INFO L82 PathProgramCache]: Analyzing trace with hash 1839024639, now seen corresponding path program 1 times [2020-10-19 18:54:26,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:54:26,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257922950] [2020-10-19 18:54:26,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:54:26,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:54:26,508 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:54:26,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:54:26,513 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:54:26,522 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:54:27,040 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 93 [2020-10-19 18:54:27,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.10 06:54:27 BoogieIcfgContainer [2020-10-19 18:54:27,189 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-19 18:54:27,190 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 18:54:27,190 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 18:54:27,190 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 18:54:27,191 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:54:13" (3/4) ... [2020-10-19 18:54:27,194 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-10-19 18:54:27,274 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 18:54:27,274 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 18:54:27,279 INFO L168 Benchmark]: Toolchain (without parser) took 14577.75 ms. Allocated memory was 1.0 GB in the beginning and 2.6 GB in the end (delta: 1.6 GB). Free memory was 960.0 MB in the beginning and 1.5 GB in the end (delta: -529.4 MB). Peak memory consumption was 1.0 GB. Max. memory is 11.5 GB. [2020-10-19 18:54:27,280 INFO L168 Benchmark]: CDTParser took 0.27 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 18:54:27,281 INFO L168 Benchmark]: CACSL2BoogieTranslator took 508.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 960.0 MB in the beginning and 1.1 GB in the end (delta: -177.2 MB). Peak memory consumption was 27.4 MB. Max. memory is 11.5 GB. [2020-10-19 18:54:27,286 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.45 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: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2020-10-19 18:54:27,287 INFO L168 Benchmark]: Boogie Preprocessor took 30.20 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: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:54:27,287 INFO L168 Benchmark]: RCFGBuilder took 435.24 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: 33.0 MB). Peak memory consumption was 33.0 MB. Max. memory is 11.5 GB. [2020-10-19 18:54:27,288 INFO L168 Benchmark]: BuchiAutomizer took 13453.79 ms. Allocated memory was 1.2 GB in the beginning and 2.6 GB in the end (delta: 1.4 GB). Free memory was 1.1 GB in the beginning and 1.5 GB in the end (delta: -393.8 MB). Peak memory consumption was 1.0 GB. Max. memory is 11.5 GB. [2020-10-19 18:54:27,288 INFO L168 Benchmark]: Witness Printer took 84.50 ms. Allocated memory is still 2.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:54:27,296 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 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 508.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 960.0 MB in the beginning and 1.1 GB in the end (delta: -177.2 MB). Peak memory consumption was 27.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 54.45 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: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 30.20 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: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 435.24 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: 33.0 MB). Peak memory consumption was 33.0 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 13453.79 ms. Allocated memory was 1.2 GB in the beginning and 2.6 GB in the end (delta: 1.4 GB). Free memory was 1.1 GB in the beginning and 1.5 GB in the end (delta: -393.8 MB). Peak memory consumption was 1.0 GB. Max. memory is 11.5 GB. * Witness Printer took 84.50 ms. Allocated memory is still 2.6 GB. Free memory is still 1.5 GB. 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 12 terminating modules (12 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.12 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 155650 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 13.3s and 13 iterations. TraceHistogramMax:1. Analysis of lassos took 1.7s. Construction of modules took 0.1s. Büchi inclusion checks took 0.8s. Highest rank in rank-based complementation 0. Minimization of det autom 12. Minimization of nondet autom 0. Automata minimization 4.7s AutomataMinimizationTime, 12 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 2.8s Buchi closure took 0.1s. Biggest automaton had 155650 states and ocurred in iteration 12. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 1324 SDtfs, 690 SDslu, 833 SDs, 0 SdLazy, 60 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont1 unkn0 SFLI12 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: 53]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=1184} State at position 1 is {NULL=0, p1=0, p3=0, p5=0, NULL=1184, p10=0, p7=0, p9=0, lk12=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@35dc3aa3=0, lk14=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6fd3d406=0, p14=0, lk10=0, p12=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@302cde5b=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@24b0e188=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@d9c33a3=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@41b08558=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@19c00d3a=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@c431977=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@589e337e=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@299cbf8f=0, NULL=0, NULL=0, lk3=0, lk5=0, NULL=0, lk1=0, lk7=0, lk9=0, NULL=1185, \result=0, p2=0, p4=0, p6=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3bfc2523=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@262a19e7=0, p8=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5c9921f4=0, lk13=0, p13=0, p11=0, lk11=0, cond=11, NULL=1187, NULL=0, NULL=1186, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@17b84533=0, lk4=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@34275aed=11, lk6=0, lk2=0, lk8=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 53]: 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; [L23] int p6 = __VERIFIER_nondet_int(); [L24] int lk6; [L26] int p7 = __VERIFIER_nondet_int(); [L27] int lk7; [L29] int p8 = __VERIFIER_nondet_int(); [L30] int lk8; [L32] int p9 = __VERIFIER_nondet_int(); [L33] int lk9; [L35] int p10 = __VERIFIER_nondet_int(); [L36] int lk10; [L38] int p11 = __VERIFIER_nondet_int(); [L39] int lk11; [L41] int p12 = __VERIFIER_nondet_int(); [L42] int lk12; [L44] int p13 = __VERIFIER_nondet_int(); [L45] int lk13; [L47] int p14 = __VERIFIER_nondet_int(); [L48] int lk14; [L51] int cond; Loop: [L53] COND TRUE 1 [L54] cond = __VERIFIER_nondet_int() [L55] COND FALSE !(cond == 0) [L58] lk1 = 0 [L60] lk2 = 0 [L62] lk3 = 0 [L64] lk4 = 0 [L66] lk5 = 0 [L68] lk6 = 0 [L70] lk7 = 0 [L72] lk8 = 0 [L74] lk9 = 0 [L76] lk10 = 0 [L78] lk11 = 0 [L80] lk12 = 0 [L82] lk13 = 0 [L84] lk14 = 0 [L88] COND FALSE !(p1 != 0) [L92] COND FALSE !(p2 != 0) [L96] COND FALSE !(p3 != 0) [L100] COND FALSE !(p4 != 0) [L104] COND FALSE !(p5 != 0) [L108] COND FALSE !(p6 != 0) [L112] COND FALSE !(p7 != 0) [L116] COND FALSE !(p8 != 0) [L120] COND FALSE !(p9 != 0) [L124] COND FALSE !(p10 != 0) [L128] COND FALSE !(p11 != 0) [L132] COND FALSE !(p12 != 0) [L136] COND FALSE !(p13 != 0) [L140] COND FALSE !(p14 != 0) [L146] COND FALSE !(p1 != 0) [L151] COND FALSE !(p2 != 0) [L156] COND FALSE !(p3 != 0) [L161] COND FALSE !(p4 != 0) [L166] COND FALSE !(p5 != 0) [L171] COND FALSE !(p6 != 0) [L176] COND FALSE !(p7 != 0) [L181] COND FALSE !(p8 != 0) [L186] COND FALSE !(p9 != 0) [L191] COND FALSE !(p10 != 0) [L196] COND FALSE !(p11 != 0) [L201] COND FALSE !(p12 != 0) [L206] COND FALSE !(p13 != 0) [L211] COND FALSE !(p14 != 0) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...