./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/locks/test_locks_14-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_0da99668-0b5b-43c5-9f9a-a0c09e137dea/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_0da99668-0b5b-43c5-9f9a-a0c09e137dea/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0da99668-0b5b-43c5-9f9a-a0c09e137dea/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0da99668-0b5b-43c5-9f9a-a0c09e137dea/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/locks/test_locks_14-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_0da99668-0b5b-43c5-9f9a-a0c09e137dea/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0da99668-0b5b-43c5-9f9a-a0c09e137dea/bin/uautomizer --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 4c4a63b42b00dbfea9a5b040626d99ec84a4e61b ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 0.1.24-cad4683 [2019-11-15 21:22:22,183 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 21:22:22,185 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 21:22:22,201 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 21:22:22,202 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 21:22:22,203 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 21:22:22,205 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 21:22:22,215 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 21:22:22,220 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 21:22:22,224 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 21:22:22,225 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 21:22:22,226 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 21:22:22,226 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 21:22:22,227 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 21:22:22,228 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 21:22:22,229 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 21:22:22,229 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 21:22:22,230 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 21:22:22,232 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 21:22:22,233 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 21:22:22,237 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 21:22:22,240 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 21:22:22,243 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 21:22:22,244 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 21:22:22,249 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 21:22:22,249 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 21:22:22,249 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 21:22:22,251 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 21:22:22,251 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 21:22:22,253 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 21:22:22,254 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 21:22:22,254 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 21:22:22,255 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 21:22:22,256 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 21:22:22,259 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 21:22:22,259 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 21:22:22,260 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 21:22:22,260 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 21:22:22,261 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 21:22:22,261 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 21:22:22,262 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 21:22:22,263 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0da99668-0b5b-43c5-9f9a-a0c09e137dea/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-11-15 21:22:22,280 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 21:22:22,281 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 21:22:22,282 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 21:22:22,282 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 21:22:22,282 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 21:22:22,282 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-15 21:22:22,283 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-15 21:22:22,283 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-15 21:22:22,283 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-15 21:22:22,283 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-15 21:22:22,284 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-15 21:22:22,284 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 21:22:22,284 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 21:22:22,284 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-15 21:22:22,285 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 21:22:22,285 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 21:22:22,285 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 21:22:22,285 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-15 21:22:22,285 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-15 21:22:22,286 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-15 21:22:22,286 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 21:22:22,286 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 21:22:22,286 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-15 21:22:22,287 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 21:22:22,295 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-15 21:22:22,295 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 21:22:22,296 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 21:22:22,296 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-15 21:22:22,297 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 21:22:22,297 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 21:22:22,298 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-15 21:22:22,299 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-15 21:22:22,301 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 -> /tmp/vcloud-vcloud-master/worker/run_dir_0da99668-0b5b-43c5-9f9a-a0c09e137dea/bin/uautomizer 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 -> 4c4a63b42b00dbfea9a5b040626d99ec84a4e61b [2019-11-15 21:22:22,339 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 21:22:22,350 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 21:22:22,355 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 21:22:22,358 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 21:22:22,358 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 21:22:22,359 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0da99668-0b5b-43c5-9f9a-a0c09e137dea/bin/uautomizer/../../sv-benchmarks/c/locks/test_locks_14-2.c [2019-11-15 21:22:22,425 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0da99668-0b5b-43c5-9f9a-a0c09e137dea/bin/uautomizer/data/3954f6add/afc53bce5d9a4f33ae67aa87e25744e9/FLAG177feb33e [2019-11-15 21:22:22,872 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 21:22:22,873 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0da99668-0b5b-43c5-9f9a-a0c09e137dea/sv-benchmarks/c/locks/test_locks_14-2.c [2019-11-15 21:22:22,883 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0da99668-0b5b-43c5-9f9a-a0c09e137dea/bin/uautomizer/data/3954f6add/afc53bce5d9a4f33ae67aa87e25744e9/FLAG177feb33e [2019-11-15 21:22:23,266 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0da99668-0b5b-43c5-9f9a-a0c09e137dea/bin/uautomizer/data/3954f6add/afc53bce5d9a4f33ae67aa87e25744e9 [2019-11-15 21:22:23,270 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 21:22:23,271 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 21:22:23,272 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 21:22:23,273 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 21:22:23,282 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 21:22:23,283 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 09:22:23" (1/1) ... [2019-11-15 21:22:23,286 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6136fe7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:22:23, skipping insertion in model container [2019-11-15 21:22:23,293 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 09:22:23" (1/1) ... [2019-11-15 21:22:23,301 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 21:22:23,325 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 21:22:23,605 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 21:22:23,611 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 21:22:23,648 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 21:22:23,662 INFO L192 MainTranslator]: Completed translation [2019-11-15 21:22:23,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:22:23 WrapperNode [2019-11-15 21:22:23,663 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 21:22:23,664 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 21:22:23,664 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 21:22:23,664 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 21:22:23,674 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:22:23" (1/1) ... [2019-11-15 21:22:23,681 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:22:23" (1/1) ... [2019-11-15 21:22:23,703 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 21:22:23,703 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 21:22:23,704 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 21:22:23,704 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 21:22:23,714 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:22:23" (1/1) ... [2019-11-15 21:22:23,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:22:23" (1/1) ... [2019-11-15 21:22:23,716 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:22:23" (1/1) ... [2019-11-15 21:22:23,716 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:22:23" (1/1) ... [2019-11-15 21:22:23,721 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:22:23" (1/1) ... [2019-11-15 21:22:23,728 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:22:23" (1/1) ... [2019-11-15 21:22:23,733 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:22:23" (1/1) ... [2019-11-15 21:22:23,736 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 21:22:23,737 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 21:22:23,737 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 21:22:23,737 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 21:22:23,738 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:22:23" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0da99668-0b5b-43c5-9f9a-a0c09e137dea/bin/uautomizer/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 [2019-11-15 21:22:23,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 21:22:23,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 21:22:24,235 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 21:22:24,235 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-15 21:22:24,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:22:24 BoogieIcfgContainer [2019-11-15 21:22:24,237 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 21:22:24,238 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-15 21:22:24,238 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-15 21:22:24,242 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-15 21:22:24,243 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-15 21:22:24,244 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 15.11 09:22:23" (1/3) ... [2019-11-15 21:22:24,245 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@468b1dc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.11 09:22:24, skipping insertion in model container [2019-11-15 21:22:24,245 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-15 21:22:24,245 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:22:23" (2/3) ... [2019-11-15 21:22:24,246 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@468b1dc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.11 09:22:24, skipping insertion in model container [2019-11-15 21:22:24,246 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-15 21:22:24,246 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:22:24" (3/3) ... [2019-11-15 21:22:24,248 INFO L371 chiAutomizerObserver]: Analyzing ICFG test_locks_14-2.c [2019-11-15 21:22:24,308 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-15 21:22:24,309 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-15 21:22:24,309 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-15 21:22:24,309 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 21:22:24,309 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 21:22:24,309 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-15 21:22:24,310 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 21:22:24,310 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-15 21:22:24,331 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 50 states. [2019-11-15 21:22:24,371 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 44 [2019-11-15 21:22:24,371 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 21:22:24,371 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 21:22:24,379 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-15 21:22:24,379 INFO L850 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, 1, 1] [2019-11-15 21:22:24,380 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-15 21:22:24,380 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 50 states. [2019-11-15 21:22:24,389 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 44 [2019-11-15 21:22:24,390 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 21:22:24,390 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 21:22:24,391 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-15 21:22:24,392 INFO L850 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, 1, 1] [2019-11-15 21:22:24,401 INFO L791 eck$LassoCheckResult]: Stem: 22#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~nondet6, main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_#t~nondet13, main_#t~nondet14, main_~p1~0, main_~lk1~0, main_~p2~0, main_~lk2~0, main_~p3~0, main_~lk3~0, main_~p4~0, main_~lk4~0, main_~p5~0, main_~lk5~0, main_~p6~0, main_~lk6~0, main_~p7~0, main_~lk7~0, main_~p8~0, main_~lk8~0, main_~p9~0, main_~lk9~0, main_~p10~0, main_~lk10~0, main_~p11~0, main_~lk11~0, main_~p12~0, main_~lk12~0, main_~p13~0, main_~lk13~0, main_~p14~0, main_~lk14~0, main_~cond~0;main_~p1~0 := main_#t~nondet0;havoc main_#t~nondet0;havoc main_~lk1~0;main_~p2~0 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~lk2~0;main_~p3~0 := main_#t~nondet2;havoc main_#t~nondet2;havoc main_~lk3~0;main_~p4~0 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~lk4~0;main_~p5~0 := main_#t~nondet4;havoc main_#t~nondet4;havoc main_~lk5~0;main_~p6~0 := main_#t~nondet5;havoc main_#t~nondet5;havoc main_~lk6~0;main_~p7~0 := main_#t~nondet6;havoc main_#t~nondet6;havoc main_~lk7~0;main_~p8~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~lk8~0;main_~p9~0 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~lk9~0;main_~p10~0 := main_#t~nondet9;havoc main_#t~nondet9;havoc main_~lk10~0;main_~p11~0 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~lk11~0;main_~p12~0 := main_#t~nondet11;havoc main_#t~nondet11;havoc main_~lk12~0;main_~p13~0 := main_#t~nondet12;havoc main_#t~nondet12;havoc main_~lk13~0;main_~p14~0 := main_#t~nondet13;havoc main_#t~nondet13;havoc main_~lk14~0;havoc main_~cond~0; 18#L209true [2019-11-15 21:22:24,405 INFO L793 eck$LassoCheckResult]: Loop: 18#L209true assume !false;main_~cond~0 := main_#t~nondet14;havoc main_#t~nondet14; 47#L53true 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; 48#L86true assume 0 != main_~p1~0;main_~lk1~0 := 1; 34#L86-2true assume 0 != main_~p2~0;main_~lk2~0 := 1; 51#L90-1true assume !(0 != main_~p3~0); 43#L94-1true assume 0 != main_~p4~0;main_~lk4~0 := 1; 12#L98-1true assume 0 != main_~p5~0;main_~lk5~0 := 1; 4#L102-1true assume 0 != main_~p6~0;main_~lk6~0 := 1; 7#L106-1true assume 0 != main_~p7~0;main_~lk7~0 := 1; 25#L110-1true assume 0 != main_~p8~0;main_~lk8~0 := 1; 19#L114-1true assume 0 != main_~p9~0;main_~lk9~0 := 1; 35#L118-1true assume 0 != main_~p10~0;main_~lk10~0 := 1; 38#L122-1true assume !(0 != main_~p11~0); 32#L126-1true assume 0 != main_~p12~0;main_~lk12~0 := 1; 49#L130-1true assume 0 != main_~p13~0;main_~lk13~0 := 1; 40#L134-1true assume 0 != main_~p14~0;main_~lk14~0 := 1; 45#L138-1true assume !(0 != main_~p1~0); 28#L144-1true assume 0 != main_~p2~0; 23#L150true assume !(1 != main_~lk2~0);main_~lk2~0 := 0; 9#L149true assume !(0 != main_~p3~0); 27#L154-1true assume !(0 != main_~p4~0); 33#L159-1true assume !(0 != main_~p5~0); 16#L164-1true assume !(0 != main_~p6~0); 20#L169-1true assume !(0 != main_~p7~0); 50#L174-1true assume !(0 != main_~p8~0); 5#L179-1true assume !(0 != main_~p9~0); 36#L184-1true assume !(0 != main_~p10~0); 42#L189-1true assume !(0 != main_~p11~0); 24#L194-1true assume !(0 != main_~p12~0); 30#L199-1true assume !(0 != main_~p13~0); 11#L204-1true assume 0 != main_~p14~0; 31#L210true assume !(1 != main_~lk14~0);main_~lk14~0 := 0; 18#L209true [2019-11-15 21:22:24,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:22:24,412 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-11-15 21:22:24,421 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:22:24,422 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514724039] [2019-11-15 21:22:24,422 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:22:24,423 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:22:24,427 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:22:24,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:22:24,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:22:24,533 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 21:22:24,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:22:24,534 INFO L82 PathProgramCache]: Analyzing trace with hash -878582343, now seen corresponding path program 1 times [2019-11-15 21:22:24,535 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:22:24,535 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649590164] [2019-11-15 21:22:24,535 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:22:24,535 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:22:24,535 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:22:24,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:22:24,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:22:24,702 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649590164] [2019-11-15 21:22:24,703 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:22:24,703 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 21:22:24,704 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194008592] [2019-11-15 21:22:24,711 INFO L808 eck$LassoCheckResult]: loop already infeasible [2019-11-15 21:22:24,712 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:22:24,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 21:22:24,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 21:22:24,732 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 3 states. [2019-11-15 21:22:24,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:22:24,774 INFO L93 Difference]: Finished difference Result 98 states and 177 transitions. [2019-11-15 21:22:24,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 21:22:24,777 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 98 states and 177 transitions. [2019-11-15 21:22:24,782 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 87 [2019-11-15 21:22:24,801 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 98 states to 88 states and 138 transitions. [2019-11-15 21:22:24,802 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 88 [2019-11-15 21:22:24,803 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 88 [2019-11-15 21:22:24,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 88 states and 138 transitions. [2019-11-15 21:22:24,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-15 21:22:24,805 INFO L688 BuchiCegarLoop]: Abstraction has 88 states and 138 transitions. [2019-11-15 21:22:24,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states and 138 transitions. [2019-11-15 21:22:24,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2019-11-15 21:22:24,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2019-11-15 21:22:24,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 138 transitions. [2019-11-15 21:22:24,860 INFO L711 BuchiCegarLoop]: Abstraction has 88 states and 138 transitions. [2019-11-15 21:22:24,860 INFO L591 BuchiCegarLoop]: Abstraction has 88 states and 138 transitions. [2019-11-15 21:22:24,860 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-15 21:22:24,860 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 88 states and 138 transitions. [2019-11-15 21:22:24,862 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 87 [2019-11-15 21:22:24,863 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 21:22:24,863 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 21:22:24,864 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-15 21:22:24,864 INFO L850 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, 1, 1] [2019-11-15 21:22:24,864 INFO L791 eck$LassoCheckResult]: Stem: 208#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~nondet6, 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_~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~nondet0;havoc main_#t~nondet0;havoc main_~lk1~0;main_~p2~0 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~lk2~0;main_~p3~0 := main_#t~nondet2;havoc main_#t~nondet2;havoc main_~lk3~0;main_~p4~0 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~lk4~0;main_~p5~0 := main_#t~nondet4;havoc main_#t~nondet4;havoc main_~lk5~0;main_~p6~0 := main_#t~nondet5;havoc main_#t~nondet5;havoc main_~lk6~0;main_~p7~0 := main_#t~nondet6;havoc main_#t~nondet6;havoc main_~lk7~0;main_~p8~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~lk8~0;main_~p9~0 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~lk9~0;main_~p10~0 := main_#t~nondet9;havoc main_#t~nondet9;havoc main_~lk10~0;main_~p11~0 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~lk11~0;main_~p12~0 := main_#t~nondet11;havoc main_#t~nondet11;havoc main_~lk12~0;main_~p13~0 := main_#t~nondet12;havoc main_#t~nondet12;havoc main_~lk13~0;main_~p14~0 := main_#t~nondet13;havoc main_#t~nondet13;havoc main_~lk14~0;havoc main_~cond~0; 169#L209 [2019-11-15 21:22:24,864 INFO L793 eck$LassoCheckResult]: Loop: 169#L209 assume !false;main_~cond~0 := main_#t~nondet14;havoc main_#t~nondet14; 206#L53 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; 207#L86 assume !(0 != main_~p1~0); 210#L86-2 assume 0 != main_~p2~0;main_~lk2~0 := 1; 244#L90-1 assume !(0 != main_~p3~0); 243#L94-1 assume 0 != main_~p4~0;main_~lk4~0 := 1; 242#L98-1 assume 0 != main_~p5~0;main_~lk5~0 := 1; 241#L102-1 assume 0 != main_~p6~0;main_~lk6~0 := 1; 240#L106-1 assume 0 != main_~p7~0;main_~lk7~0 := 1; 239#L110-1 assume 0 != main_~p8~0;main_~lk8~0 := 1; 238#L114-1 assume 0 != main_~p9~0;main_~lk9~0 := 1; 237#L118-1 assume 0 != main_~p10~0;main_~lk10~0 := 1; 236#L122-1 assume !(0 != main_~p11~0); 235#L126-1 assume 0 != main_~p12~0;main_~lk12~0 := 1; 234#L130-1 assume 0 != main_~p13~0;main_~lk13~0 := 1; 233#L134-1 assume 0 != main_~p14~0;main_~lk14~0 := 1; 232#L138-1 assume !(0 != main_~p1~0); 231#L144-1 assume 0 != main_~p2~0; 230#L150 assume !(1 != main_~lk2~0);main_~lk2~0 := 0; 229#L149 assume !(0 != main_~p3~0); 227#L154-1 assume !(0 != main_~p4~0); 225#L159-1 assume !(0 != main_~p5~0); 193#L164-1 assume !(0 != main_~p6~0); 194#L169-1 assume !(0 != main_~p7~0); 160#L174-1 assume !(0 != main_~p8~0); 170#L179-1 assume !(0 != main_~p9~0); 171#L184-1 assume !(0 != main_~p10~0); 202#L189-1 assume !(0 != main_~p11~0); 192#L194-1 assume !(0 != main_~p12~0); 165#L199-1 assume !(0 != main_~p13~0); 166#L204-1 assume 0 != main_~p14~0; 168#L210 assume !(1 != main_~lk14~0);main_~lk14~0 := 0; 169#L209 [2019-11-15 21:22:24,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:22:24,865 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2019-11-15 21:22:24,865 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:22:24,865 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718989024] [2019-11-15 21:22:24,866 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:22:24,866 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:22:24,866 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:22:24,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:22:24,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:22:24,891 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 21:22:24,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:22:24,893 INFO L82 PathProgramCache]: Analyzing trace with hash -855950089, now seen corresponding path program 1 times [2019-11-15 21:22:24,893 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:22:24,894 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403408884] [2019-11-15 21:22:24,894 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:22:24,895 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:22:24,895 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:22:24,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:22:24,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:22:24,942 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403408884] [2019-11-15 21:22:24,942 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:22:24,943 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 21:22:24,943 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464327100] [2019-11-15 21:22:24,943 INFO L808 eck$LassoCheckResult]: loop already infeasible [2019-11-15 21:22:24,944 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:22:24,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 21:22:24,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 21:22:24,944 INFO L87 Difference]: Start difference. First operand 88 states and 138 transitions. cyclomatic complexity: 52 Second operand 3 states. [2019-11-15 21:22:24,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:22:24,978 INFO L93 Difference]: Finished difference Result 173 states and 269 transitions. [2019-11-15 21:22:24,978 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 21:22:24,979 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 173 states and 269 transitions. [2019-11-15 21:22:24,983 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 172 [2019-11-15 21:22:24,986 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 173 states to 173 states and 269 transitions. [2019-11-15 21:22:24,986 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 173 [2019-11-15 21:22:24,987 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 173 [2019-11-15 21:22:24,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 173 states and 269 transitions. [2019-11-15 21:22:24,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-15 21:22:24,993 INFO L688 BuchiCegarLoop]: Abstraction has 173 states and 269 transitions. [2019-11-15 21:22:24,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states and 269 transitions. [2019-11-15 21:22:25,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2019-11-15 21:22:25,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2019-11-15 21:22:25,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 269 transitions. [2019-11-15 21:22:25,006 INFO L711 BuchiCegarLoop]: Abstraction has 173 states and 269 transitions. [2019-11-15 21:22:25,006 INFO L591 BuchiCegarLoop]: Abstraction has 173 states and 269 transitions. [2019-11-15 21:22:25,006 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-15 21:22:25,007 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 173 states and 269 transitions. [2019-11-15 21:22:25,010 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 172 [2019-11-15 21:22:25,010 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 21:22:25,010 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 21:22:25,011 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-15 21:22:25,011 INFO L850 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, 1, 1] [2019-11-15 21:22:25,011 INFO L791 eck$LassoCheckResult]: Stem: 473#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~nondet6, main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_#t~nondet13, main_#t~nondet14, main_~p1~0, main_~lk1~0, main_~p2~0, main_~lk2~0, main_~p3~0, main_~lk3~0, main_~p4~0, main_~lk4~0, main_~p5~0, main_~lk5~0, main_~p6~0, main_~lk6~0, main_~p7~0, main_~lk7~0, main_~p8~0, main_~lk8~0, main_~p9~0, main_~lk9~0, main_~p10~0, main_~lk10~0, main_~p11~0, main_~lk11~0, main_~p12~0, main_~lk12~0, main_~p13~0, main_~lk13~0, main_~p14~0, main_~lk14~0, main_~cond~0;main_~p1~0 := main_#t~nondet0;havoc main_#t~nondet0;havoc main_~lk1~0;main_~p2~0 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~lk2~0;main_~p3~0 := main_#t~nondet2;havoc main_#t~nondet2;havoc main_~lk3~0;main_~p4~0 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~lk4~0;main_~p5~0 := main_#t~nondet4;havoc main_#t~nondet4;havoc main_~lk5~0;main_~p6~0 := main_#t~nondet5;havoc main_#t~nondet5;havoc main_~lk6~0;main_~p7~0 := main_#t~nondet6;havoc main_#t~nondet6;havoc main_~lk7~0;main_~p8~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~lk8~0;main_~p9~0 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~lk9~0;main_~p10~0 := main_#t~nondet9;havoc main_#t~nondet9;havoc main_~lk10~0;main_~p11~0 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~lk11~0;main_~p12~0 := main_#t~nondet11;havoc main_#t~nondet11;havoc main_~lk12~0;main_~p13~0 := main_#t~nondet12;havoc main_#t~nondet12;havoc main_~lk13~0;main_~p14~0 := main_#t~nondet13;havoc main_#t~nondet13;havoc main_~lk14~0;havoc main_~cond~0; 474#L209 [2019-11-15 21:22:25,012 INFO L793 eck$LassoCheckResult]: Loop: 474#L209 assume !false;main_~cond~0 := main_#t~nondet14;havoc main_#t~nondet14; 489#L53 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; 490#L86 assume !(0 != main_~p1~0); 448#L86-2 assume 0 != main_~p2~0;main_~lk2~0 := 1; 449#L90-1 assume !(0 != main_~p3~0); 481#L94-1 assume !(0 != main_~p4~0); 483#L98-1 assume 0 != main_~p5~0;main_~lk5~0 := 1; 585#L102-1 assume 0 != main_~p6~0;main_~lk6~0 := 1; 583#L106-1 assume 0 != main_~p7~0;main_~lk7~0 := 1; 581#L110-1 assume 0 != main_~p8~0;main_~lk8~0 := 1; 579#L114-1 assume 0 != main_~p9~0;main_~lk9~0 := 1; 577#L118-1 assume 0 != main_~p10~0;main_~lk10~0 := 1; 575#L122-1 assume !(0 != main_~p11~0); 573#L126-1 assume 0 != main_~p12~0;main_~lk12~0 := 1; 571#L130-1 assume 0 != main_~p13~0;main_~lk13~0 := 1; 569#L134-1 assume 0 != main_~p14~0;main_~lk14~0 := 1; 567#L138-1 assume !(0 != main_~p1~0); 566#L144-1 assume 0 != main_~p2~0; 565#L150 assume !(1 != main_~lk2~0);main_~lk2~0 := 0; 564#L149 assume !(0 != main_~p3~0); 562#L154-1 assume !(0 != main_~p4~0); 442#L159-1 assume !(0 != main_~p5~0); 444#L164-1 assume !(0 != main_~p6~0); 456#L169-1 assume !(0 != main_~p7~0); 549#L174-1 assume !(0 != main_~p8~0); 547#L179-1 assume !(0 != main_~p9~0); 544#L184-1 assume !(0 != main_~p10~0); 543#L189-1 assume !(0 != main_~p11~0); 541#L194-1 assume !(0 != main_~p12~0); 521#L199-1 assume !(0 != main_~p13~0); 522#L204-1 assume 0 != main_~p14~0; 518#L210 assume !(1 != main_~lk14~0);main_~lk14~0 := 0; 474#L209 [2019-11-15 21:22:25,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:22:25,012 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 3 times [2019-11-15 21:22:25,013 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:22:25,013 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201750328] [2019-11-15 21:22:25,013 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:22:25,013 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:22:25,014 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:22:25,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:22:25,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:22:25,025 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 21:22:25,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:22:25,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1067277945, now seen corresponding path program 1 times [2019-11-15 21:22:25,026 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:22:25,027 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247734547] [2019-11-15 21:22:25,027 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:22:25,027 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:22:25,027 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:22:25,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:22:25,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:22:25,066 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247734547] [2019-11-15 21:22:25,066 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:22:25,066 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 21:22:25,067 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685072451] [2019-11-15 21:22:25,067 INFO L808 eck$LassoCheckResult]: loop already infeasible [2019-11-15 21:22:25,067 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:22:25,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 21:22:25,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 21:22:25,068 INFO L87 Difference]: Start difference. First operand 173 states and 269 transitions. cyclomatic complexity: 100 Second operand 3 states. [2019-11-15 21:22:25,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:22:25,097 INFO L93 Difference]: Finished difference Result 341 states and 525 transitions. [2019-11-15 21:22:25,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 21:22:25,098 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 341 states and 525 transitions. [2019-11-15 21:22:25,102 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 340 [2019-11-15 21:22:25,107 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 341 states to 341 states and 525 transitions. [2019-11-15 21:22:25,108 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 341 [2019-11-15 21:22:25,109 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 341 [2019-11-15 21:22:25,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 341 states and 525 transitions. [2019-11-15 21:22:25,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-15 21:22:25,111 INFO L688 BuchiCegarLoop]: Abstraction has 341 states and 525 transitions. [2019-11-15 21:22:25,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states and 525 transitions. [2019-11-15 21:22:25,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 341. [2019-11-15 21:22:25,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2019-11-15 21:22:25,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 525 transitions. [2019-11-15 21:22:25,142 INFO L711 BuchiCegarLoop]: Abstraction has 341 states and 525 transitions. [2019-11-15 21:22:25,142 INFO L591 BuchiCegarLoop]: Abstraction has 341 states and 525 transitions. [2019-11-15 21:22:25,142 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-15 21:22:25,142 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 341 states and 525 transitions. [2019-11-15 21:22:25,145 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 340 [2019-11-15 21:22:25,145 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 21:22:25,145 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 21:22:25,146 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-15 21:22:25,146 INFO L850 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, 1, 1] [2019-11-15 21:22:25,146 INFO L791 eck$LassoCheckResult]: Stem: 996#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~nondet6, 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_~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~nondet0;havoc main_#t~nondet0;havoc main_~lk1~0;main_~p2~0 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~lk2~0;main_~p3~0 := main_#t~nondet2;havoc main_#t~nondet2;havoc main_~lk3~0;main_~p4~0 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~lk4~0;main_~p5~0 := main_#t~nondet4;havoc main_#t~nondet4;havoc main_~lk5~0;main_~p6~0 := main_#t~nondet5;havoc main_#t~nondet5;havoc main_~lk6~0;main_~p7~0 := main_#t~nondet6;havoc main_#t~nondet6;havoc main_~lk7~0;main_~p8~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~lk8~0;main_~p9~0 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~lk9~0;main_~p10~0 := main_#t~nondet9;havoc main_#t~nondet9;havoc main_~lk10~0;main_~p11~0 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~lk11~0;main_~p12~0 := main_#t~nondet11;havoc main_#t~nondet11;havoc main_~lk12~0;main_~p13~0 := main_#t~nondet12;havoc main_#t~nondet12;havoc main_~lk13~0;main_~p14~0 := main_#t~nondet13;havoc main_#t~nondet13;havoc main_~lk14~0;havoc main_~cond~0; 997#L209 [2019-11-15 21:22:25,147 INFO L793 eck$LassoCheckResult]: Loop: 997#L209 assume !false;main_~cond~0 := main_#t~nondet14;havoc main_#t~nondet14; 1142#L53 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; 1141#L86 assume !(0 != main_~p1~0); 1007#L86-2 assume 0 != main_~p2~0;main_~lk2~0 := 1; 1008#L90-1 assume !(0 != main_~p3~0); 1117#L94-1 assume !(0 != main_~p4~0); 1119#L98-1 assume !(0 != main_~p5~0); 1103#L102-1 assume 0 != main_~p6~0;main_~lk6~0 := 1; 1104#L106-1 assume 0 != main_~p7~0;main_~lk7~0 := 1; 1091#L110-1 assume 0 != main_~p8~0;main_~lk8~0 := 1; 1092#L114-1 assume 0 != main_~p9~0;main_~lk9~0 := 1; 1079#L118-1 assume 0 != main_~p10~0;main_~lk10~0 := 1; 1080#L122-1 assume !(0 != main_~p11~0); 1066#L126-1 assume 0 != main_~p12~0;main_~lk12~0 := 1; 1067#L130-1 assume 0 != main_~p13~0;main_~lk13~0 := 1; 1056#L134-1 assume 0 != main_~p14~0;main_~lk14~0 := 1; 1057#L138-1 assume !(0 != main_~p1~0); 1134#L144-1 assume 0 != main_~p2~0; 1132#L150 assume !(1 != main_~lk2~0);main_~lk2~0 := 0; 1129#L149 assume !(0 != main_~p3~0); 1124#L154-1 assume !(0 != main_~p4~0); 1122#L159-1 assume !(0 != main_~p5~0); 1116#L164-1 assume !(0 != main_~p6~0); 1115#L169-1 assume !(0 != main_~p7~0); 1102#L174-1 assume !(0 != main_~p8~0); 1096#L179-1 assume !(0 != main_~p9~0); 1089#L184-1 assume !(0 != main_~p10~0); 1084#L189-1 assume !(0 != main_~p11~0); 1078#L194-1 assume !(0 != main_~p12~0); 1077#L199-1 assume !(0 != main_~p13~0); 1144#L204-1 assume 0 != main_~p14~0; 1143#L210 assume !(1 != main_~lk14~0);main_~lk14~0 := 0; 997#L209 [2019-11-15 21:22:25,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:22:25,147 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 4 times [2019-11-15 21:22:25,147 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:22:25,148 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19250254] [2019-11-15 21:22:25,148 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:22:25,148 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:22:25,148 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:22:25,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:22:25,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:22:25,167 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 21:22:25,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:22:25,168 INFO L82 PathProgramCache]: Analyzing trace with hash 1129317559, now seen corresponding path program 1 times [2019-11-15 21:22:25,168 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:22:25,168 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544984707] [2019-11-15 21:22:25,169 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:22:25,169 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:22:25,169 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:22:25,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:22:25,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:22:25,214 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544984707] [2019-11-15 21:22:25,214 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:22:25,214 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 21:22:25,215 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033275703] [2019-11-15 21:22:25,215 INFO L808 eck$LassoCheckResult]: loop already infeasible [2019-11-15 21:22:25,215 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:22:25,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 21:22:25,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 21:22:25,216 INFO L87 Difference]: Start difference. First operand 341 states and 525 transitions. cyclomatic complexity: 192 Second operand 3 states. [2019-11-15 21:22:25,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:22:25,248 INFO L93 Difference]: Finished difference Result 673 states and 1025 transitions. [2019-11-15 21:22:25,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 21:22:25,248 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 673 states and 1025 transitions. [2019-11-15 21:22:25,258 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 672 [2019-11-15 21:22:25,265 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 673 states to 673 states and 1025 transitions. [2019-11-15 21:22:25,265 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 673 [2019-11-15 21:22:25,266 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 673 [2019-11-15 21:22:25,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 673 states and 1025 transitions. [2019-11-15 21:22:25,268 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-15 21:22:25,268 INFO L688 BuchiCegarLoop]: Abstraction has 673 states and 1025 transitions. [2019-11-15 21:22:25,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states and 1025 transitions. [2019-11-15 21:22:25,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 673. [2019-11-15 21:22:25,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 673 states. [2019-11-15 21:22:25,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 1025 transitions. [2019-11-15 21:22:25,312 INFO L711 BuchiCegarLoop]: Abstraction has 673 states and 1025 transitions. [2019-11-15 21:22:25,312 INFO L591 BuchiCegarLoop]: Abstraction has 673 states and 1025 transitions. [2019-11-15 21:22:25,312 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-15 21:22:25,313 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 673 states and 1025 transitions. [2019-11-15 21:22:25,317 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 672 [2019-11-15 21:22:25,318 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 21:22:25,318 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 21:22:25,319 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-15 21:22:25,319 INFO L850 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, 1, 1] [2019-11-15 21:22:25,319 INFO L791 eck$LassoCheckResult]: Stem: 2014#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~nondet6, main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_#t~nondet13, main_#t~nondet14, main_~p1~0, main_~lk1~0, main_~p2~0, main_~lk2~0, main_~p3~0, main_~lk3~0, main_~p4~0, main_~lk4~0, main_~p5~0, main_~lk5~0, main_~p6~0, main_~lk6~0, main_~p7~0, main_~lk7~0, main_~p8~0, main_~lk8~0, main_~p9~0, main_~lk9~0, main_~p10~0, main_~lk10~0, main_~p11~0, main_~lk11~0, main_~p12~0, main_~lk12~0, main_~p13~0, main_~lk13~0, main_~p14~0, main_~lk14~0, main_~cond~0;main_~p1~0 := main_#t~nondet0;havoc main_#t~nondet0;havoc main_~lk1~0;main_~p2~0 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~lk2~0;main_~p3~0 := main_#t~nondet2;havoc main_#t~nondet2;havoc main_~lk3~0;main_~p4~0 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~lk4~0;main_~p5~0 := main_#t~nondet4;havoc main_#t~nondet4;havoc main_~lk5~0;main_~p6~0 := main_#t~nondet5;havoc main_#t~nondet5;havoc main_~lk6~0;main_~p7~0 := main_#t~nondet6;havoc main_#t~nondet6;havoc main_~lk7~0;main_~p8~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~lk8~0;main_~p9~0 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~lk9~0;main_~p10~0 := main_#t~nondet9;havoc main_#t~nondet9;havoc main_~lk10~0;main_~p11~0 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~lk11~0;main_~p12~0 := main_#t~nondet11;havoc main_#t~nondet11;havoc main_~lk12~0;main_~p13~0 := main_#t~nondet12;havoc main_#t~nondet12;havoc main_~lk13~0;main_~p14~0 := main_#t~nondet13;havoc main_#t~nondet13;havoc main_~lk14~0;havoc main_~cond~0; 2015#L209 [2019-11-15 21:22:25,319 INFO L793 eck$LassoCheckResult]: Loop: 2015#L209 assume !false;main_~cond~0 := main_#t~nondet14;havoc main_#t~nondet14; 2092#L53 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; 2090#L86 assume !(0 != main_~p1~0); 2088#L86-2 assume 0 != main_~p2~0;main_~lk2~0 := 1; 2086#L90-1 assume !(0 != main_~p3~0); 2082#L94-1 assume !(0 != main_~p4~0); 2078#L98-1 assume !(0 != main_~p5~0); 2074#L102-1 assume !(0 != main_~p6~0); 2072#L106-1 assume 0 != main_~p7~0;main_~lk7~0 := 1; 2070#L110-1 assume 0 != main_~p8~0;main_~lk8~0 := 1; 2068#L114-1 assume 0 != main_~p9~0;main_~lk9~0 := 1; 2066#L118-1 assume 0 != main_~p10~0;main_~lk10~0 := 1; 2064#L122-1 assume !(0 != main_~p11~0); 2062#L126-1 assume 0 != main_~p12~0;main_~lk12~0 := 1; 2060#L130-1 assume 0 != main_~p13~0;main_~lk13~0 := 1; 2058#L134-1 assume 0 != main_~p14~0;main_~lk14~0 := 1; 2056#L138-1 assume !(0 != main_~p1~0); 2050#L144-1 assume 0 != main_~p2~0; 2051#L150 assume !(1 != main_~lk2~0);main_~lk2~0 := 0; 2042#L149 assume !(0 != main_~p3~0); 2041#L154-1 assume !(0 != main_~p4~0); 2130#L159-1 assume !(0 != main_~p5~0); 2127#L164-1 assume !(0 != main_~p6~0); 2124#L169-1 assume !(0 != main_~p7~0); 2120#L174-1 assume !(0 != main_~p8~0); 2116#L179-1 assume !(0 != main_~p9~0); 2111#L184-1 assume !(0 != main_~p10~0); 2108#L189-1 assume !(0 != main_~p11~0); 2104#L194-1 assume !(0 != main_~p12~0); 2099#L199-1 assume !(0 != main_~p13~0); 2097#L204-1 assume 0 != main_~p14~0; 2095#L210 assume !(1 != main_~lk14~0);main_~lk14~0 := 0; 2015#L209 [2019-11-15 21:22:25,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:22:25,320 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 5 times [2019-11-15 21:22:25,320 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:22:25,321 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295601483] [2019-11-15 21:22:25,321 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:22:25,321 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:22:25,321 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:22:25,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:22:25,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:22:25,340 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 21:22:25,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:22:25,340 INFO L82 PathProgramCache]: Analyzing trace with hash 1269866169, now seen corresponding path program 1 times [2019-11-15 21:22:25,341 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:22:25,341 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244687127] [2019-11-15 21:22:25,341 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:22:25,341 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:22:25,341 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:22:25,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:22:25,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:22:25,385 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244687127] [2019-11-15 21:22:25,385 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:22:25,385 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 21:22:25,385 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501085778] [2019-11-15 21:22:25,386 INFO L808 eck$LassoCheckResult]: loop already infeasible [2019-11-15 21:22:25,386 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:22:25,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 21:22:25,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 21:22:25,387 INFO L87 Difference]: Start difference. First operand 673 states and 1025 transitions. cyclomatic complexity: 368 Second operand 3 states. [2019-11-15 21:22:25,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:22:25,431 INFO L93 Difference]: Finished difference Result 1329 states and 2001 transitions. [2019-11-15 21:22:25,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 21:22:25,432 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1329 states and 2001 transitions. [2019-11-15 21:22:25,452 INFO L131 ngComponentsAnalysis]: Automaton has 32 accepting balls. 1328 [2019-11-15 21:22:25,465 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1329 states to 1329 states and 2001 transitions. [2019-11-15 21:22:25,466 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1329 [2019-11-15 21:22:25,467 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1329 [2019-11-15 21:22:25,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1329 states and 2001 transitions. [2019-11-15 21:22:25,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-15 21:22:25,470 INFO L688 BuchiCegarLoop]: Abstraction has 1329 states and 2001 transitions. [2019-11-15 21:22:25,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1329 states and 2001 transitions. [2019-11-15 21:22:25,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1329 to 1329. [2019-11-15 21:22:25,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1329 states. [2019-11-15 21:22:25,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1329 states to 1329 states and 2001 transitions. [2019-11-15 21:22:25,502 INFO L711 BuchiCegarLoop]: Abstraction has 1329 states and 2001 transitions. [2019-11-15 21:22:25,502 INFO L591 BuchiCegarLoop]: Abstraction has 1329 states and 2001 transitions. [2019-11-15 21:22:25,502 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-11-15 21:22:25,502 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 1329 states and 2001 transitions. [2019-11-15 21:22:25,511 INFO L131 ngComponentsAnalysis]: Automaton has 32 accepting balls. 1328 [2019-11-15 21:22:25,511 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 21:22:25,511 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 21:22:25,512 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-15 21:22:25,512 INFO L850 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, 1, 1] [2019-11-15 21:22:25,512 INFO L791 eck$LassoCheckResult]: Stem: 4027#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~nondet6, 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_~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~nondet0;havoc main_#t~nondet0;havoc main_~lk1~0;main_~p2~0 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~lk2~0;main_~p3~0 := main_#t~nondet2;havoc main_#t~nondet2;havoc main_~lk3~0;main_~p4~0 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~lk4~0;main_~p5~0 := main_#t~nondet4;havoc main_#t~nondet4;havoc main_~lk5~0;main_~p6~0 := main_#t~nondet5;havoc main_#t~nondet5;havoc main_~lk6~0;main_~p7~0 := main_#t~nondet6;havoc main_#t~nondet6;havoc main_~lk7~0;main_~p8~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~lk8~0;main_~p9~0 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~lk9~0;main_~p10~0 := main_#t~nondet9;havoc main_#t~nondet9;havoc main_~lk10~0;main_~p11~0 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~lk11~0;main_~p12~0 := main_#t~nondet11;havoc main_#t~nondet11;havoc main_~lk12~0;main_~p13~0 := main_#t~nondet12;havoc main_#t~nondet12;havoc main_~lk13~0;main_~p14~0 := main_#t~nondet13;havoc main_#t~nondet13;havoc main_~lk14~0;havoc main_~cond~0; 4028#L209 [2019-11-15 21:22:25,512 INFO L793 eck$LassoCheckResult]: Loop: 4028#L209 assume !false;main_~cond~0 := main_#t~nondet14;havoc main_#t~nondet14; 4527#L53 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; 4526#L86 assume !(0 != main_~p1~0); 4524#L86-2 assume 0 != main_~p2~0;main_~lk2~0 := 1; 4351#L90-1 assume !(0 != main_~p3~0); 4352#L94-1 assume !(0 != main_~p4~0); 4513#L98-1 assume !(0 != main_~p5~0); 4544#L102-1 assume !(0 != main_~p6~0); 4545#L106-1 assume !(0 != main_~p7~0); 4629#L110-1 assume 0 != main_~p8~0;main_~lk8~0 := 1; 4630#L114-1 assume 0 != main_~p9~0;main_~lk9~0 := 1; 4623#L118-1 assume 0 != main_~p10~0;main_~lk10~0 := 1; 4624#L122-1 assume !(0 != main_~p11~0); 4617#L126-1 assume 0 != main_~p12~0;main_~lk12~0 := 1; 4618#L130-1 assume 0 != main_~p13~0;main_~lk13~0 := 1; 4610#L134-1 assume 0 != main_~p14~0;main_~lk14~0 := 1; 4611#L138-1 assume !(0 != main_~p1~0); 4712#L144-1 assume 0 != main_~p2~0; 4131#L150 assume !(1 != main_~lk2~0);main_~lk2~0 := 0; 4132#L149 assume !(0 != main_~p3~0); 4362#L154-1 assume !(0 != main_~p4~0); 4363#L159-1 assume !(0 != main_~p5~0); 4425#L164-1 assume !(0 != main_~p6~0); 4547#L169-1 assume !(0 != main_~p7~0); 4543#L174-1 assume !(0 != main_~p8~0); 4541#L179-1 assume !(0 != main_~p9~0); 4537#L184-1 assume !(0 != main_~p10~0); 4535#L189-1 assume !(0 != main_~p11~0); 4533#L194-1 assume !(0 != main_~p12~0); 4530#L199-1 assume !(0 != main_~p13~0); 4529#L204-1 assume 0 != main_~p14~0; 4528#L210 assume !(1 != main_~lk14~0);main_~lk14~0 := 0; 4028#L209 [2019-11-15 21:22:25,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:22:25,513 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 6 times [2019-11-15 21:22:25,513 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:22:25,513 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94213521] [2019-11-15 21:22:25,513 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:22:25,513 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:22:25,513 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:22:25,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:22:25,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:22:25,542 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 21:22:25,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:22:25,545 INFO L82 PathProgramCache]: Analyzing trace with hash 1135852663, now seen corresponding path program 1 times [2019-11-15 21:22:25,545 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:22:25,546 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962285712] [2019-11-15 21:22:25,546 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:22:25,547 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:22:25,547 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:22:25,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:22:25,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:22:25,592 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962285712] [2019-11-15 21:22:25,593 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:22:25,593 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 21:22:25,593 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022480658] [2019-11-15 21:22:25,593 INFO L808 eck$LassoCheckResult]: loop already infeasible [2019-11-15 21:22:25,594 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:22:25,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 21:22:25,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 21:22:25,594 INFO L87 Difference]: Start difference. First operand 1329 states and 2001 transitions. cyclomatic complexity: 704 Second operand 3 states. [2019-11-15 21:22:25,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:22:25,635 INFO L93 Difference]: Finished difference Result 2625 states and 3905 transitions. [2019-11-15 21:22:25,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 21:22:25,636 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 2625 states and 3905 transitions. [2019-11-15 21:22:25,673 INFO L131 ngComponentsAnalysis]: Automaton has 64 accepting balls. 2624 [2019-11-15 21:22:25,697 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 2625 states to 2625 states and 3905 transitions. [2019-11-15 21:22:25,697 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 2625 [2019-11-15 21:22:25,700 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 2625 [2019-11-15 21:22:25,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2625 states and 3905 transitions. [2019-11-15 21:22:25,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-15 21:22:25,705 INFO L688 BuchiCegarLoop]: Abstraction has 2625 states and 3905 transitions. [2019-11-15 21:22:25,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2625 states and 3905 transitions. [2019-11-15 21:22:25,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2625 to 2625. [2019-11-15 21:22:25,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2625 states. [2019-11-15 21:22:25,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2625 states to 2625 states and 3905 transitions. [2019-11-15 21:22:25,767 INFO L711 BuchiCegarLoop]: Abstraction has 2625 states and 3905 transitions. [2019-11-15 21:22:25,767 INFO L591 BuchiCegarLoop]: Abstraction has 2625 states and 3905 transitions. [2019-11-15 21:22:25,768 INFO L424 BuchiCegarLoop]: ======== Iteration 7============ [2019-11-15 21:22:25,768 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2625 states and 3905 transitions. [2019-11-15 21:22:25,786 INFO L131 ngComponentsAnalysis]: Automaton has 64 accepting balls. 2624 [2019-11-15 21:22:25,786 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 21:22:25,787 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 21:22:25,789 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-15 21:22:25,790 INFO L850 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, 1, 1] [2019-11-15 21:22:25,791 INFO L791 eck$LassoCheckResult]: Stem: 7991#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~nondet6, main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_#t~nondet13, main_#t~nondet14, main_~p1~0, main_~lk1~0, main_~p2~0, main_~lk2~0, main_~p3~0, main_~lk3~0, main_~p4~0, main_~lk4~0, main_~p5~0, main_~lk5~0, main_~p6~0, main_~lk6~0, main_~p7~0, main_~lk7~0, main_~p8~0, main_~lk8~0, main_~p9~0, main_~lk9~0, main_~p10~0, main_~lk10~0, main_~p11~0, main_~lk11~0, main_~p12~0, main_~lk12~0, main_~p13~0, main_~lk13~0, main_~p14~0, main_~lk14~0, main_~cond~0;main_~p1~0 := main_#t~nondet0;havoc main_#t~nondet0;havoc main_~lk1~0;main_~p2~0 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~lk2~0;main_~p3~0 := main_#t~nondet2;havoc main_#t~nondet2;havoc main_~lk3~0;main_~p4~0 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~lk4~0;main_~p5~0 := main_#t~nondet4;havoc main_#t~nondet4;havoc main_~lk5~0;main_~p6~0 := main_#t~nondet5;havoc main_#t~nondet5;havoc main_~lk6~0;main_~p7~0 := main_#t~nondet6;havoc main_#t~nondet6;havoc main_~lk7~0;main_~p8~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~lk8~0;main_~p9~0 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~lk9~0;main_~p10~0 := main_#t~nondet9;havoc main_#t~nondet9;havoc main_~lk10~0;main_~p11~0 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~lk11~0;main_~p12~0 := main_#t~nondet11;havoc main_#t~nondet11;havoc main_~lk12~0;main_~p13~0 := main_#t~nondet12;havoc main_#t~nondet12;havoc main_~lk13~0;main_~p14~0 := main_#t~nondet13;havoc main_#t~nondet13;havoc main_~lk14~0;havoc main_~cond~0; 7992#L209 [2019-11-15 21:22:25,791 INFO L793 eck$LassoCheckResult]: Loop: 7992#L209 assume !false;main_~cond~0 := main_#t~nondet14;havoc main_#t~nondet14; 8209#L53 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; 8205#L86 assume !(0 != main_~p1~0); 8202#L86-2 assume 0 != main_~p2~0;main_~lk2~0 := 1; 8198#L90-1 assume !(0 != main_~p3~0); 8161#L94-1 assume !(0 != main_~p4~0); 8157#L98-1 assume !(0 != main_~p5~0); 8101#L102-1 assume !(0 != main_~p6~0); 8059#L106-1 assume !(0 != main_~p7~0); 8060#L110-1 assume !(0 != main_~p8~0); 8304#L114-1 assume 0 != main_~p9~0;main_~lk9~0 := 1; 8302#L118-1 assume 0 != main_~p10~0;main_~lk10~0 := 1; 8299#L122-1 assume !(0 != main_~p11~0); 8296#L126-1 assume 0 != main_~p12~0;main_~lk12~0 := 1; 8293#L130-1 assume 0 != main_~p13~0;main_~lk13~0 := 1; 8290#L134-1 assume 0 != main_~p14~0;main_~lk14~0 := 1; 8286#L138-1 assume !(0 != main_~p1~0); 8283#L144-1 assume 0 != main_~p2~0; 8279#L150 assume !(1 != main_~lk2~0);main_~lk2~0 := 0; 8277#L149 assume !(0 != main_~p3~0); 8273#L154-1 assume !(0 != main_~p4~0); 8270#L159-1 assume !(0 != main_~p5~0); 8266#L164-1 assume !(0 != main_~p6~0); 8263#L169-1 assume !(0 != main_~p7~0); 8260#L174-1 assume !(0 != main_~p8~0); 8257#L179-1 assume !(0 != main_~p9~0); 8251#L184-1 assume !(0 != main_~p10~0); 8250#L189-1 assume !(0 != main_~p11~0); 8246#L194-1 assume !(0 != main_~p12~0); 8225#L199-1 assume !(0 != main_~p13~0); 8221#L204-1 assume 0 != main_~p14~0; 8218#L210 assume !(1 != main_~lk14~0);main_~lk14~0 := 0; 7992#L209 [2019-11-15 21:22:25,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:22:25,791 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 7 times [2019-11-15 21:22:25,792 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:22:25,792 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333046429] [2019-11-15 21:22:25,792 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:22:25,792 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:22:25,792 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:22:25,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:22:25,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:22:25,816 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 21:22:25,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:22:25,816 INFO L82 PathProgramCache]: Analyzing trace with hash -669585671, now seen corresponding path program 1 times [2019-11-15 21:22:25,817 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:22:25,817 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905801942] [2019-11-15 21:22:25,817 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:22:25,817 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:22:25,818 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:22:25,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:22:25,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:22:25,863 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905801942] [2019-11-15 21:22:25,863 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:22:25,863 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 21:22:25,864 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336460434] [2019-11-15 21:22:25,864 INFO L808 eck$LassoCheckResult]: loop already infeasible [2019-11-15 21:22:25,864 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:22:25,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 21:22:25,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 21:22:25,865 INFO L87 Difference]: Start difference. First operand 2625 states and 3905 transitions. cyclomatic complexity: 1344 Second operand 3 states. [2019-11-15 21:22:25,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:22:25,912 INFO L93 Difference]: Finished difference Result 5185 states and 7617 transitions. [2019-11-15 21:22:25,913 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 21:22:25,913 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 5185 states and 7617 transitions. [2019-11-15 21:22:25,953 INFO L131 ngComponentsAnalysis]: Automaton has 128 accepting balls. 5184 [2019-11-15 21:22:25,998 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 5185 states to 5185 states and 7617 transitions. [2019-11-15 21:22:25,998 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5185 [2019-11-15 21:22:26,004 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5185 [2019-11-15 21:22:26,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5185 states and 7617 transitions. [2019-11-15 21:22:26,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-15 21:22:26,015 INFO L688 BuchiCegarLoop]: Abstraction has 5185 states and 7617 transitions. [2019-11-15 21:22:26,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5185 states and 7617 transitions. [2019-11-15 21:22:26,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5185 to 5185. [2019-11-15 21:22:26,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5185 states. [2019-11-15 21:22:26,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5185 states to 5185 states and 7617 transitions. [2019-11-15 21:22:26,148 INFO L711 BuchiCegarLoop]: Abstraction has 5185 states and 7617 transitions. [2019-11-15 21:22:26,148 INFO L591 BuchiCegarLoop]: Abstraction has 5185 states and 7617 transitions. [2019-11-15 21:22:26,149 INFO L424 BuchiCegarLoop]: ======== Iteration 8============ [2019-11-15 21:22:26,149 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5185 states and 7617 transitions. [2019-11-15 21:22:26,179 INFO L131 ngComponentsAnalysis]: Automaton has 128 accepting balls. 5184 [2019-11-15 21:22:26,179 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 21:22:26,179 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 21:22:26,180 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-15 21:22:26,180 INFO L850 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, 1, 1] [2019-11-15 21:22:26,180 INFO L791 eck$LassoCheckResult]: Stem: 15798#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~nondet6, 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_~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~nondet0;havoc main_#t~nondet0;havoc main_~lk1~0;main_~p2~0 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~lk2~0;main_~p3~0 := main_#t~nondet2;havoc main_#t~nondet2;havoc main_~lk3~0;main_~p4~0 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~lk4~0;main_~p5~0 := main_#t~nondet4;havoc main_#t~nondet4;havoc main_~lk5~0;main_~p6~0 := main_#t~nondet5;havoc main_#t~nondet5;havoc main_~lk6~0;main_~p7~0 := main_#t~nondet6;havoc main_#t~nondet6;havoc main_~lk7~0;main_~p8~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~lk8~0;main_~p9~0 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~lk9~0;main_~p10~0 := main_#t~nondet9;havoc main_#t~nondet9;havoc main_~lk10~0;main_~p11~0 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~lk11~0;main_~p12~0 := main_#t~nondet11;havoc main_#t~nondet11;havoc main_~lk12~0;main_~p13~0 := main_#t~nondet12;havoc main_#t~nondet12;havoc main_~lk13~0;main_~p14~0 := main_#t~nondet13;havoc main_#t~nondet13;havoc main_~lk14~0;havoc main_~cond~0; 15799#L209 [2019-11-15 21:22:26,181 INFO L793 eck$LassoCheckResult]: Loop: 15799#L209 assume !false;main_~cond~0 := main_#t~nondet14;havoc main_#t~nondet14; 15885#L53 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; 15883#L86 assume !(0 != main_~p1~0); 15882#L86-2 assume 0 != main_~p2~0;main_~lk2~0 := 1; 15881#L90-1 assume !(0 != main_~p3~0); 15879#L94-1 assume !(0 != main_~p4~0); 15877#L98-1 assume !(0 != main_~p5~0); 15875#L102-1 assume !(0 != main_~p6~0); 15869#L106-1 assume !(0 != main_~p7~0); 15870#L110-1 assume !(0 != main_~p8~0); 15954#L114-1 assume !(0 != main_~p9~0); 15951#L118-1 assume 0 != main_~p10~0;main_~lk10~0 := 1; 15948#L122-1 assume !(0 != main_~p11~0); 15945#L126-1 assume 0 != main_~p12~0;main_~lk12~0 := 1; 15942#L130-1 assume 0 != main_~p13~0;main_~lk13~0 := 1; 15940#L134-1 assume 0 != main_~p14~0;main_~lk14~0 := 1; 15938#L138-1 assume !(0 != main_~p1~0); 15935#L144-1 assume 0 != main_~p2~0; 15932#L150 assume !(1 != main_~lk2~0);main_~lk2~0 := 0; 15929#L149 assume !(0 != main_~p3~0); 15924#L154-1 assume !(0 != main_~p4~0); 15920#L159-1 assume !(0 != main_~p5~0); 15916#L164-1 assume !(0 != main_~p6~0); 15913#L169-1 assume !(0 != main_~p7~0); 15910#L174-1 assume !(0 != main_~p8~0); 15907#L179-1 assume !(0 != main_~p9~0); 15904#L184-1 assume !(0 != main_~p10~0); 15901#L189-1 assume !(0 != main_~p11~0); 15898#L194-1 assume !(0 != main_~p12~0); 15894#L199-1 assume !(0 != main_~p13~0); 15891#L204-1 assume 0 != main_~p14~0; 15888#L210 assume !(1 != main_~lk14~0);main_~lk14~0 := 0; 15799#L209 [2019-11-15 21:22:26,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:22:26,182 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 8 times [2019-11-15 21:22:26,182 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:22:26,182 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183852804] [2019-11-15 21:22:26,182 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:22:26,183 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:22:26,183 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:22:26,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:22:26,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:22:26,199 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 21:22:26,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:22:26,200 INFO L82 PathProgramCache]: Analyzing trace with hash -450730953, now seen corresponding path program 1 times [2019-11-15 21:22:26,200 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:22:26,201 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108328897] [2019-11-15 21:22:26,201 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:22:26,201 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:22:26,201 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:22:26,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:22:26,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:22:26,251 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108328897] [2019-11-15 21:22:26,252 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:22:26,252 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 21:22:26,252 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528885779] [2019-11-15 21:22:26,253 INFO L808 eck$LassoCheckResult]: loop already infeasible [2019-11-15 21:22:26,254 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:22:26,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 21:22:26,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 21:22:26,254 INFO L87 Difference]: Start difference. First operand 5185 states and 7617 transitions. cyclomatic complexity: 2560 Second operand 3 states. [2019-11-15 21:22:26,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:22:26,371 INFO L93 Difference]: Finished difference Result 10241 states and 14849 transitions. [2019-11-15 21:22:26,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 21:22:26,372 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10241 states and 14849 transitions. [2019-11-15 21:22:26,454 INFO L131 ngComponentsAnalysis]: Automaton has 256 accepting balls. 10240 [2019-11-15 21:22:26,525 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10241 states to 10241 states and 14849 transitions. [2019-11-15 21:22:26,525 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10241 [2019-11-15 21:22:26,535 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10241 [2019-11-15 21:22:26,535 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10241 states and 14849 transitions. [2019-11-15 21:22:26,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-15 21:22:26,554 INFO L688 BuchiCegarLoop]: Abstraction has 10241 states and 14849 transitions. [2019-11-15 21:22:26,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10241 states and 14849 transitions. [2019-11-15 21:22:26,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10241 to 10241. [2019-11-15 21:22:26,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10241 states. [2019-11-15 21:22:26,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10241 states to 10241 states and 14849 transitions. [2019-11-15 21:22:26,895 INFO L711 BuchiCegarLoop]: Abstraction has 10241 states and 14849 transitions. [2019-11-15 21:22:26,895 INFO L591 BuchiCegarLoop]: Abstraction has 10241 states and 14849 transitions. [2019-11-15 21:22:26,895 INFO L424 BuchiCegarLoop]: ======== Iteration 9============ [2019-11-15 21:22:26,896 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10241 states and 14849 transitions. [2019-11-15 21:22:26,933 INFO L131 ngComponentsAnalysis]: Automaton has 256 accepting balls. 10240 [2019-11-15 21:22:26,933 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 21:22:26,933 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 21:22:26,934 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-15 21:22:26,934 INFO L850 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, 1, 1] [2019-11-15 21:22:26,934 INFO L791 eck$LassoCheckResult]: Stem: 31236#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~nondet6, main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_#t~nondet13, main_#t~nondet14, main_~p1~0, main_~lk1~0, main_~p2~0, main_~lk2~0, main_~p3~0, main_~lk3~0, main_~p4~0, main_~lk4~0, main_~p5~0, main_~lk5~0, main_~p6~0, main_~lk6~0, main_~p7~0, main_~lk7~0, main_~p8~0, main_~lk8~0, main_~p9~0, main_~lk9~0, main_~p10~0, main_~lk10~0, main_~p11~0, main_~lk11~0, main_~p12~0, main_~lk12~0, main_~p13~0, main_~lk13~0, main_~p14~0, main_~lk14~0, main_~cond~0;main_~p1~0 := main_#t~nondet0;havoc main_#t~nondet0;havoc main_~lk1~0;main_~p2~0 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~lk2~0;main_~p3~0 := main_#t~nondet2;havoc main_#t~nondet2;havoc main_~lk3~0;main_~p4~0 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~lk4~0;main_~p5~0 := main_#t~nondet4;havoc main_#t~nondet4;havoc main_~lk5~0;main_~p6~0 := main_#t~nondet5;havoc main_#t~nondet5;havoc main_~lk6~0;main_~p7~0 := main_#t~nondet6;havoc main_#t~nondet6;havoc main_~lk7~0;main_~p8~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~lk8~0;main_~p9~0 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~lk9~0;main_~p10~0 := main_#t~nondet9;havoc main_#t~nondet9;havoc main_~lk10~0;main_~p11~0 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~lk11~0;main_~p12~0 := main_#t~nondet11;havoc main_#t~nondet11;havoc main_~lk12~0;main_~p13~0 := main_#t~nondet12;havoc main_#t~nondet12;havoc main_~lk13~0;main_~p14~0 := main_#t~nondet13;havoc main_#t~nondet13;havoc main_~lk14~0;havoc main_~cond~0; 31237#L209 [2019-11-15 21:22:26,936 INFO L793 eck$LassoCheckResult]: Loop: 31237#L209 assume !false;main_~cond~0 := main_#t~nondet14;havoc main_#t~nondet14; 31804#L53 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; 31805#L86 assume !(0 != main_~p1~0); 31794#L86-2 assume 0 != main_~p2~0;main_~lk2~0 := 1; 31795#L90-1 assume !(0 != main_~p3~0); 31786#L94-1 assume !(0 != main_~p4~0); 31781#L98-1 assume !(0 != main_~p5~0); 31775#L102-1 assume !(0 != main_~p6~0); 31777#L106-1 assume !(0 != main_~p7~0); 31855#L110-1 assume !(0 != main_~p8~0); 31304#L114-1 assume !(0 != main_~p9~0); 31305#L118-1 assume !(0 != main_~p10~0); 32118#L122-1 assume !(0 != main_~p11~0); 32108#L126-1 assume 0 != main_~p12~0;main_~lk12~0 := 1; 32109#L130-1 assume 0 != main_~p13~0;main_~lk13~0 := 1; 32098#L134-1 assume 0 != main_~p14~0;main_~lk14~0 := 1; 32099#L138-1 assume !(0 != main_~p1~0); 32170#L144-1 assume 0 != main_~p2~0; 32169#L150 assume !(1 != main_~lk2~0);main_~lk2~0 := 0; 32168#L149 assume !(0 != main_~p3~0); 32165#L154-1 assume !(0 != main_~p4~0); 31674#L159-1 assume !(0 != main_~p5~0); 31663#L164-1 assume !(0 != main_~p6~0); 31664#L169-1 assume !(0 != main_~p7~0); 32086#L174-1 assume !(0 != main_~p8~0); 32084#L179-1 assume !(0 != main_~p9~0); 32083#L184-1 assume !(0 != main_~p10~0); 31831#L189-1 assume !(0 != main_~p11~0); 31830#L194-1 assume !(0 != main_~p12~0); 31820#L199-1 assume !(0 != main_~p13~0); 31821#L204-1 assume 0 != main_~p14~0; 31812#L210 assume !(1 != main_~lk14~0);main_~lk14~0 := 0; 31237#L209 [2019-11-15 21:22:26,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:22:26,936 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 9 times [2019-11-15 21:22:26,937 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:22:26,937 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805813010] [2019-11-15 21:22:26,937 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:22:26,937 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:22:26,937 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:22:26,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:22:26,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:22:26,959 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 21:22:26,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:22:26,960 INFO L82 PathProgramCache]: Analyzing trace with hash -28029127, now seen corresponding path program 1 times [2019-11-15 21:22:26,960 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:22:26,960 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694967431] [2019-11-15 21:22:26,961 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:22:26,961 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:22:26,961 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:22:26,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:22:26,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:22:26,999 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694967431] [2019-11-15 21:22:26,999 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:22:27,000 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 21:22:27,000 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878439490] [2019-11-15 21:22:27,000 INFO L808 eck$LassoCheckResult]: loop already infeasible [2019-11-15 21:22:27,001 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:22:27,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 21:22:27,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 21:22:27,001 INFO L87 Difference]: Start difference. First operand 10241 states and 14849 transitions. cyclomatic complexity: 4864 Second operand 3 states. [2019-11-15 21:22:27,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:22:27,061 INFO L93 Difference]: Finished difference Result 20225 states and 28929 transitions. [2019-11-15 21:22:27,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 21:22:27,061 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20225 states and 28929 transitions. [2019-11-15 21:22:27,165 INFO L131 ngComponentsAnalysis]: Automaton has 512 accepting balls. 20224 [2019-11-15 21:22:27,262 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20225 states to 20225 states and 28929 transitions. [2019-11-15 21:22:27,262 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20225 [2019-11-15 21:22:27,283 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20225 [2019-11-15 21:22:27,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20225 states and 28929 transitions. [2019-11-15 21:22:27,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-15 21:22:27,315 INFO L688 BuchiCegarLoop]: Abstraction has 20225 states and 28929 transitions. [2019-11-15 21:22:27,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20225 states and 28929 transitions. [2019-11-15 21:22:27,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20225 to 20225. [2019-11-15 21:22:27,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20225 states. [2019-11-15 21:22:27,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20225 states to 20225 states and 28929 transitions. [2019-11-15 21:22:27,665 INFO L711 BuchiCegarLoop]: Abstraction has 20225 states and 28929 transitions. [2019-11-15 21:22:27,665 INFO L591 BuchiCegarLoop]: Abstraction has 20225 states and 28929 transitions. [2019-11-15 21:22:27,674 INFO L424 BuchiCegarLoop]: ======== Iteration 10============ [2019-11-15 21:22:27,675 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20225 states and 28929 transitions. [2019-11-15 21:22:27,744 INFO L131 ngComponentsAnalysis]: Automaton has 512 accepting balls. 20224 [2019-11-15 21:22:27,744 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 21:22:27,744 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 21:22:27,745 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-15 21:22:27,746 INFO L850 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, 1, 1] [2019-11-15 21:22:27,746 INFO L791 eck$LassoCheckResult]: Stem: 61713#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~nondet6, 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_~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~nondet0;havoc main_#t~nondet0;havoc main_~lk1~0;main_~p2~0 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~lk2~0;main_~p3~0 := main_#t~nondet2;havoc main_#t~nondet2;havoc main_~lk3~0;main_~p4~0 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~lk4~0;main_~p5~0 := main_#t~nondet4;havoc main_#t~nondet4;havoc main_~lk5~0;main_~p6~0 := main_#t~nondet5;havoc main_#t~nondet5;havoc main_~lk6~0;main_~p7~0 := main_#t~nondet6;havoc main_#t~nondet6;havoc main_~lk7~0;main_~p8~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~lk8~0;main_~p9~0 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~lk9~0;main_~p10~0 := main_#t~nondet9;havoc main_#t~nondet9;havoc main_~lk10~0;main_~p11~0 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~lk11~0;main_~p12~0 := main_#t~nondet11;havoc main_#t~nondet11;havoc main_~lk12~0;main_~p13~0 := main_#t~nondet12;havoc main_#t~nondet12;havoc main_~lk13~0;main_~p14~0 := main_#t~nondet13;havoc main_#t~nondet13;havoc main_~lk14~0;havoc main_~cond~0; 61714#L209 [2019-11-15 21:22:27,746 INFO L793 eck$LassoCheckResult]: Loop: 61714#L209 assume !false;main_~cond~0 := main_#t~nondet14;havoc main_#t~nondet14; 62136#L53 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; 62131#L86 assume !(0 != main_~p1~0); 62127#L86-2 assume 0 != main_~p2~0;main_~lk2~0 := 1; 62124#L90-1 assume !(0 != main_~p3~0); 62119#L94-1 assume !(0 != main_~p4~0); 62113#L98-1 assume !(0 != main_~p5~0); 62107#L102-1 assume !(0 != main_~p6~0); 62095#L106-1 assume !(0 != main_~p7~0); 62097#L110-1 assume !(0 != main_~p8~0); 62100#L114-1 assume !(0 != main_~p9~0); 62217#L118-1 assume !(0 != main_~p10~0); 62215#L122-1 assume !(0 != main_~p11~0); 62212#L126-1 assume !(0 != main_~p12~0); 62213#L130-1 assume 0 != main_~p13~0;main_~lk13~0 := 1; 62230#L134-1 assume 0 != main_~p14~0;main_~lk14~0 := 1; 62228#L138-1 assume !(0 != main_~p1~0); 62227#L144-1 assume 0 != main_~p2~0; 62226#L150 assume !(1 != main_~lk2~0);main_~lk2~0 := 0; 62225#L149 assume !(0 != main_~p3~0); 62222#L154-1 assume !(0 != main_~p4~0); 62220#L159-1 assume !(0 != main_~p5~0); 62015#L164-1 assume !(0 != main_~p6~0); 62016#L169-1 assume !(0 != main_~p7~0); 62007#L174-1 assume !(0 != main_~p8~0); 62004#L179-1 assume !(0 != main_~p9~0); 61999#L184-1 assume !(0 != main_~p10~0); 61951#L189-1 assume !(0 != main_~p11~0); 61950#L194-1 assume !(0 != main_~p12~0); 62148#L199-1 assume !(0 != main_~p13~0); 62144#L204-1 assume 0 != main_~p14~0; 62141#L210 assume !(1 != main_~lk14~0);main_~lk14~0 := 0; 61714#L209 [2019-11-15 21:22:27,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:22:27,747 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 10 times [2019-11-15 21:22:27,747 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:22:27,747 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927819872] [2019-11-15 21:22:27,747 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:22:27,748 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:22:27,748 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:22:27,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:22:27,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:22:27,765 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 21:22:27,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:22:27,766 INFO L82 PathProgramCache]: Analyzing trace with hash -1716972869, now seen corresponding path program 1 times [2019-11-15 21:22:27,767 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:22:27,767 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478218992] [2019-11-15 21:22:27,767 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:22:27,767 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:22:27,767 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:22:27,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:22:27,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:22:27,803 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478218992] [2019-11-15 21:22:27,804 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:22:27,804 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 21:22:27,804 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547255000] [2019-11-15 21:22:27,804 INFO L808 eck$LassoCheckResult]: loop already infeasible [2019-11-15 21:22:27,804 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:22:27,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 21:22:27,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 21:22:27,805 INFO L87 Difference]: Start difference. First operand 20225 states and 28929 transitions. cyclomatic complexity: 9216 Second operand 3 states. [2019-11-15 21:22:27,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:22:27,930 INFO L93 Difference]: Finished difference Result 39937 states and 56321 transitions. [2019-11-15 21:22:27,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 21:22:27,931 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 39937 states and 56321 transitions. [2019-11-15 21:22:28,121 INFO L131 ngComponentsAnalysis]: Automaton has 1024 accepting balls. 39936 [2019-11-15 21:22:28,285 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 39937 states to 39937 states and 56321 transitions. [2019-11-15 21:22:28,285 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39937 [2019-11-15 21:22:28,326 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 39937 [2019-11-15 21:22:28,327 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39937 states and 56321 transitions. [2019-11-15 21:22:28,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-15 21:22:28,363 INFO L688 BuchiCegarLoop]: Abstraction has 39937 states and 56321 transitions. [2019-11-15 21:22:28,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39937 states and 56321 transitions. [2019-11-15 21:22:29,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39937 to 39937. [2019-11-15 21:22:29,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39937 states. [2019-11-15 21:22:29,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39937 states to 39937 states and 56321 transitions. [2019-11-15 21:22:29,155 INFO L711 BuchiCegarLoop]: Abstraction has 39937 states and 56321 transitions. [2019-11-15 21:22:29,155 INFO L591 BuchiCegarLoop]: Abstraction has 39937 states and 56321 transitions. [2019-11-15 21:22:29,155 INFO L424 BuchiCegarLoop]: ======== Iteration 11============ [2019-11-15 21:22:29,156 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 39937 states and 56321 transitions. [2019-11-15 21:22:29,276 INFO L131 ngComponentsAnalysis]: Automaton has 1024 accepting balls. 39936 [2019-11-15 21:22:29,276 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 21:22:29,276 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 21:22:29,278 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-15 21:22:29,278 INFO L850 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, 1, 1] [2019-11-15 21:22:29,278 INFO L791 eck$LassoCheckResult]: Stem: 121873#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~nondet6, main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_#t~nondet13, main_#t~nondet14, main_~p1~0, main_~lk1~0, main_~p2~0, main_~lk2~0, main_~p3~0, main_~lk3~0, main_~p4~0, main_~lk4~0, main_~p5~0, main_~lk5~0, main_~p6~0, main_~lk6~0, main_~p7~0, main_~lk7~0, main_~p8~0, main_~lk8~0, main_~p9~0, main_~lk9~0, main_~p10~0, main_~lk10~0, main_~p11~0, main_~lk11~0, main_~p12~0, main_~lk12~0, main_~p13~0, main_~lk13~0, main_~p14~0, main_~lk14~0, main_~cond~0;main_~p1~0 := main_#t~nondet0;havoc main_#t~nondet0;havoc main_~lk1~0;main_~p2~0 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~lk2~0;main_~p3~0 := main_#t~nondet2;havoc main_#t~nondet2;havoc main_~lk3~0;main_~p4~0 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~lk4~0;main_~p5~0 := main_#t~nondet4;havoc main_#t~nondet4;havoc main_~lk5~0;main_~p6~0 := main_#t~nondet5;havoc main_#t~nondet5;havoc main_~lk6~0;main_~p7~0 := main_#t~nondet6;havoc main_#t~nondet6;havoc main_~lk7~0;main_~p8~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~lk8~0;main_~p9~0 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~lk9~0;main_~p10~0 := main_#t~nondet9;havoc main_#t~nondet9;havoc main_~lk10~0;main_~p11~0 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~lk11~0;main_~p12~0 := main_#t~nondet11;havoc main_#t~nondet11;havoc main_~lk12~0;main_~p13~0 := main_#t~nondet12;havoc main_#t~nondet12;havoc main_~lk13~0;main_~p14~0 := main_#t~nondet13;havoc main_#t~nondet13;havoc main_~lk14~0;havoc main_~cond~0; 121874#L209 [2019-11-15 21:22:29,279 INFO L793 eck$LassoCheckResult]: Loop: 121874#L209 assume !false;main_~cond~0 := main_#t~nondet14;havoc main_#t~nondet14; 122323#L53 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; 122324#L86 assume !(0 != main_~p1~0); 122309#L86-2 assume 0 != main_~p2~0;main_~lk2~0 := 1; 122310#L90-1 assume !(0 != main_~p3~0); 122295#L94-1 assume !(0 != main_~p4~0); 122297#L98-1 assume !(0 != main_~p5~0); 122530#L102-1 assume !(0 != main_~p6~0); 122527#L106-1 assume !(0 != main_~p7~0); 122525#L110-1 assume !(0 != main_~p8~0); 122523#L114-1 assume !(0 != main_~p9~0); 122466#L118-1 assume !(0 != main_~p10~0); 122464#L122-1 assume !(0 != main_~p11~0); 122460#L126-1 assume !(0 != main_~p12~0); 122457#L130-1 assume !(0 != main_~p13~0); 122456#L134-1 assume 0 != main_~p14~0;main_~lk14~0 := 1; 122454#L138-1 assume !(0 != main_~p1~0); 122453#L144-1 assume 0 != main_~p2~0; 122452#L150 assume !(1 != main_~lk2~0);main_~lk2~0 := 0; 122192#L149 assume !(0 != main_~p3~0); 122187#L154-1 assume !(0 != main_~p4~0); 122188#L159-1 assume !(0 != main_~p5~0); 122178#L164-1 assume !(0 != main_~p6~0); 122179#L169-1 assume !(0 != main_~p7~0); 122436#L174-1 assume !(0 != main_~p8~0); 122428#L179-1 assume !(0 != main_~p9~0); 122378#L184-1 assume !(0 != main_~p10~0); 122368#L189-1 assume !(0 != main_~p11~0); 122367#L194-1 assume !(0 != main_~p12~0); 122349#L199-1 assume !(0 != main_~p13~0); 122350#L204-1 assume 0 != main_~p14~0; 122335#L210 assume !(1 != main_~lk14~0);main_~lk14~0 := 0; 121874#L209 [2019-11-15 21:22:29,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:22:29,279 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 11 times [2019-11-15 21:22:29,279 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:22:29,280 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331125398] [2019-11-15 21:22:29,280 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:22:29,280 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:22:29,280 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:22:29,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:22:29,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:22:29,292 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 21:22:29,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:22:29,293 INFO L82 PathProgramCache]: Analyzing trace with hash 583849721, now seen corresponding path program 1 times [2019-11-15 21:22:29,293 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:22:29,293 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160700405] [2019-11-15 21:22:29,294 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:22:29,294 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:22:29,294 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:22:29,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:22:29,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:22:29,321 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 21:22:29,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:22:29,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1609341720, now seen corresponding path program 1 times [2019-11-15 21:22:29,322 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:22:29,322 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403121202] [2019-11-15 21:22:29,322 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:22:29,322 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:22:29,323 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:22:29,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:22:29,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:22:29,340 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 21:22:29,479 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2019-11-15 21:22:29,606 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2019-11-15 21:22:29,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 15.11 09:22:29 BoogieIcfgContainer [2019-11-15 21:22:29,716 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-15 21:22:29,716 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 21:22:29,716 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 21:22:29,716 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 21:22:29,717 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:22:24" (3/4) ... [2019-11-15 21:22:29,722 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2019-11-15 21:22:29,808 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_0da99668-0b5b-43c5-9f9a-a0c09e137dea/bin/uautomizer/witness.graphml [2019-11-15 21:22:29,808 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 21:22:29,809 INFO L168 Benchmark]: Toolchain (without parser) took 6538.48 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 300.4 MB). Free memory was 951.4 MB in the beginning and 910.2 MB in the end (delta: 41.2 MB). Peak memory consumption was 341.7 MB. Max. memory is 11.5 GB. [2019-11-15 21:22:29,810 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 21:22:29,810 INFO L168 Benchmark]: CACSL2BoogieTranslator took 391.08 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.0 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -158.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-11-15 21:22:29,810 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.35 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 21:22:29,811 INFO L168 Benchmark]: Boogie Preprocessor took 32.83 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 21:22:29,811 INFO L168 Benchmark]: RCFGBuilder took 500.50 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 30.4 MB). Peak memory consumption was 30.4 MB. Max. memory is 11.5 GB. [2019-11-15 21:22:29,811 INFO L168 Benchmark]: BuchiAutomizer took 5478.07 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 181.4 MB). Free memory was 1.1 GB in the beginning and 913.5 MB in the end (delta: 166.2 MB). Peak memory consumption was 347.6 MB. Max. memory is 11.5 GB. [2019-11-15 21:22:29,812 INFO L168 Benchmark]: Witness Printer took 92.10 ms. Allocated memory is still 1.3 GB. Free memory was 913.5 MB in the beginning and 910.2 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. [2019-11-15 21:22:29,813 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 391.08 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.0 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -158.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 39.35 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 32.83 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 500.50 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 30.4 MB). Peak memory consumption was 30.4 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 5478.07 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 181.4 MB). Free memory was 1.1 GB in the beginning and 913.5 MB in the end (delta: 166.2 MB). Peak memory consumption was 347.6 MB. Max. memory is 11.5 GB. * Witness Printer took 92.10 ms. Allocated memory is still 1.3 GB. Free memory was 913.5 MB in the beginning and 910.2 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. 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 10 terminating modules (10 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.10 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 39937 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 5.3s and 11 iterations. TraceHistogramMax:1. Analysis of lassos took 1.3s. Construction of modules took 0.1s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 0. Minimization of det autom 10. Minimization of nondet autom 0. Automata minimization 1.8s AutomataMinimizationTime, 10 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.9s Buchi closure took 0.0s. Biggest automaton had 39937 states and ocurred in iteration 10. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 1073 SDtfs, 551 SDslu, 669 SDs, 0 SdLazy, 50 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont1 unkn0 SFLI10 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: 51]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {p1=0, \result=0, p3=0, p2=3, p5=0, p10=0, p4=0, p7=0, p6=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@647f938a=0, p9=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5340c807=0, p8=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4f6a18=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1b58c4d4=0, lk12=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2b6a7cd=0, lk13=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5d3e4096=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1438ec83=0, lk14=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@45c57b78=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@39dc8e01=0, p13=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5c08bfe5=0, p14=2, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6420b4b=0, p11=0, lk10=0, p12=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2b80d93c=0, lk11=0, cond=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@10909337=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6bf43497=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@44e1e38f=1, lk3=0, lk4=0, lk5=0, lk6=0, lk1=0, lk2=0, lk7=0, lk8=0, lk9=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 51]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int p1 = __VERIFIER_nondet_int(); [L7] int lk1; [L9] int p2 = __VERIFIER_nondet_int(); [L10] int lk2; [L12] int p3 = __VERIFIER_nondet_int(); [L13] int lk3; [L15] int p4 = __VERIFIER_nondet_int(); [L16] int lk4; [L18] int p5 = __VERIFIER_nondet_int(); [L19] int lk5; [L21] int p6 = __VERIFIER_nondet_int(); [L22] int lk6; [L24] int p7 = __VERIFIER_nondet_int(); [L25] int lk7; [L27] int p8 = __VERIFIER_nondet_int(); [L28] int lk8; [L30] int p9 = __VERIFIER_nondet_int(); [L31] int lk9; [L33] int p10 = __VERIFIER_nondet_int(); [L34] int lk10; [L36] int p11 = __VERIFIER_nondet_int(); [L37] int lk11; [L39] int p12 = __VERIFIER_nondet_int(); [L40] int lk12; [L42] int p13 = __VERIFIER_nondet_int(); [L43] int lk13; [L45] int p14 = __VERIFIER_nondet_int(); [L46] int lk14; [L49] int cond; Loop: [L51] COND TRUE 1 [L52] cond = __VERIFIER_nondet_int() [L53] COND FALSE !(cond == 0) [L56] lk1 = 0 [L58] lk2 = 0 [L60] lk3 = 0 [L62] lk4 = 0 [L64] lk5 = 0 [L66] lk6 = 0 [L68] lk7 = 0 [L70] lk8 = 0 [L72] lk9 = 0 [L74] lk10 = 0 [L76] lk11 = 0 [L78] lk12 = 0 [L80] lk13 = 0 [L82] lk14 = 0 [L86] COND FALSE !(p1 != 0) [L90] COND TRUE p2 != 0 [L91] lk2 = 1 [L94] COND FALSE !(p3 != 0) [L98] COND FALSE !(p4 != 0) [L102] COND FALSE !(p5 != 0) [L106] COND FALSE !(p6 != 0) [L110] COND FALSE !(p7 != 0) [L114] COND FALSE !(p8 != 0) [L118] COND FALSE !(p9 != 0) [L122] COND FALSE !(p10 != 0) [L126] COND FALSE !(p11 != 0) [L130] COND FALSE !(p12 != 0) [L134] COND FALSE !(p13 != 0) [L138] COND TRUE p14 != 0 [L139] lk14 = 1 [L144] COND FALSE !(p1 != 0) [L149] COND TRUE p2 != 0 [L150] COND FALSE !(lk2 != 1) [L151] lk2 = 0 [L154] COND FALSE !(p3 != 0) [L159] COND FALSE !(p4 != 0) [L164] COND FALSE !(p5 != 0) [L169] COND FALSE !(p6 != 0) [L174] COND FALSE !(p7 != 0) [L179] COND FALSE !(p8 != 0) [L184] COND FALSE !(p9 != 0) [L189] COND FALSE !(p10 != 0) [L194] COND FALSE !(p11 != 0) [L199] COND FALSE !(p12 != 0) [L204] COND FALSE !(p13 != 0) [L209] COND TRUE p14 != 0 [L210] COND FALSE !(lk14 != 1) [L211] lk14 = 0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...