./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/ldv-regression/test27-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/ldv-regression/test27-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD --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 8b17e864f5b8145df67cb2b3dc045f82af33b1bd3c9c5e4c95275bcb385f71da .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 22:52:17,755 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 22:52:17,759 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 22:52:17,811 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 22:52:17,812 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 22:52:17,814 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 22:52:17,816 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 22:52:17,819 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 22:52:17,822 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 22:52:17,824 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 22:52:17,825 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 22:52:17,827 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 22:52:17,828 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 22:52:17,829 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 22:52:17,831 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 22:52:17,833 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 22:52:17,834 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 22:52:17,836 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 22:52:17,839 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 22:52:17,842 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 22:52:17,844 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 22:52:17,846 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 22:52:17,848 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 22:52:17,849 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 22:52:17,853 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 22:52:17,854 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 22:52:17,855 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 22:52:17,856 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 22:52:17,857 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 22:52:17,858 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 22:52:17,863 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 22:52:17,865 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 22:52:17,867 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 22:52:17,869 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 22:52:17,871 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 22:52:17,873 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 22:52:17,875 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 22:52:17,875 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 22:52:17,876 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 22:52:17,877 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 22:52:17,878 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 22:52:17,879 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-28 22:52:17,928 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 22:52:17,933 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 22:52:17,934 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 22:52:17,934 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 22:52:17,936 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 22:52:17,936 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 22:52:17,936 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 22:52:17,937 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-28 22:52:17,937 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-28 22:52:17,937 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-28 22:52:17,938 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-28 22:52:17,939 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-28 22:52:17,939 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-28 22:52:17,939 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 22:52:17,939 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 22:52:17,940 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 22:52:17,940 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 22:52:17,940 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 22:52:17,940 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 22:52:17,941 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-28 22:52:17,941 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-28 22:52:17,941 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-28 22:52:17,941 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 22:52:17,942 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 22:52:17,942 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-28 22:52:17,942 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 22:52:17,944 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-28 22:52:17,944 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 22:52:17,944 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 22:52:17,945 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 22:52:17,945 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 22:52:17,945 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 22:52:17,947 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-28 22:52:17,955 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8b17e864f5b8145df67cb2b3dc045f82af33b1bd3c9c5e4c95275bcb385f71da [2021-10-28 22:52:18,306 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 22:52:18,340 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 22:52:18,343 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 22:52:18,345 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 22:52:18,347 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 22:52:18,348 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/ldv-regression/test27-2.c [2021-10-28 22:52:18,451 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/data/a292739c3/bdf6bb2560a84c2cb9cc8476385d1fb2/FLAG17266e98b [2021-10-28 22:52:18,972 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 22:52:18,973 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/sv-benchmarks/c/ldv-regression/test27-2.c [2021-10-28 22:52:18,981 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/data/a292739c3/bdf6bb2560a84c2cb9cc8476385d1fb2/FLAG17266e98b [2021-10-28 22:52:19,334 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/data/a292739c3/bdf6bb2560a84c2cb9cc8476385d1fb2 [2021-10-28 22:52:19,337 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 22:52:19,338 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 22:52:19,340 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 22:52:19,340 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 22:52:19,347 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 22:52:19,349 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:52:19" (1/1) ... [2021-10-28 22:52:19,351 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d9552e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:52:19, skipping insertion in model container [2021-10-28 22:52:19,352 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:52:19" (1/1) ... [2021-10-28 22:52:19,361 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 22:52:19,387 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 22:52:19,631 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/sv-benchmarks/c/ldv-regression/test27-2.c[1224,1237] [2021-10-28 22:52:19,632 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 22:52:19,644 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 22:52:19,670 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/sv-benchmarks/c/ldv-regression/test27-2.c[1224,1237] [2021-10-28 22:52:19,672 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 22:52:19,690 INFO L208 MainTranslator]: Completed translation [2021-10-28 22:52:19,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:52:19 WrapperNode [2021-10-28 22:52:19,691 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 22:52:19,692 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 22:52:19,692 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 22:52:19,692 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 22:52:19,701 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:52:19" (1/1) ... [2021-10-28 22:52:19,712 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:52:19" (1/1) ... [2021-10-28 22:52:19,742 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 22:52:19,743 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 22:52:19,743 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 22:52:19,744 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 22:52:19,755 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:52:19" (1/1) ... [2021-10-28 22:52:19,755 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:52:19" (1/1) ... [2021-10-28 22:52:19,760 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:52:19" (1/1) ... [2021-10-28 22:52:19,761 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:52:19" (1/1) ... [2021-10-28 22:52:19,774 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:52:19" (1/1) ... [2021-10-28 22:52:19,779 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:52:19" (1/1) ... [2021-10-28 22:52:19,781 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:52:19" (1/1) ... [2021-10-28 22:52:19,785 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 22:52:19,786 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 22:52:19,786 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 22:52:19,787 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 22:52:19,788 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:52:19" (1/1) ... [2021-10-28 22:52:19,799 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:52:19,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:52:19,844 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:52:19,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-28 22:52:19,896 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 22:52:19,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 22:52:19,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 22:52:19,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 22:52:19,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 22:52:19,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 22:52:19,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 22:52:19,898 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 22:52:19,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 22:52:20,297 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 22:52:20,298 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-28 22:52:20,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:52:20 BoogieIcfgContainer [2021-10-28 22:52:20,300 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 22:52:20,302 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-28 22:52:20,302 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-28 22:52:20,306 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-28 22:52:20,307 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 22:52:20,307 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.10 10:52:19" (1/3) ... [2021-10-28 22:52:20,309 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2bfd444f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 10:52:20, skipping insertion in model container [2021-10-28 22:52:20,309 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 22:52:20,309 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:52:19" (2/3) ... [2021-10-28 22:52:20,310 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2bfd444f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 10:52:20, skipping insertion in model container [2021-10-28 22:52:20,310 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 22:52:20,310 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:52:20" (3/3) ... [2021-10-28 22:52:20,312 INFO L389 chiAutomizerObserver]: Analyzing ICFG test27-2.c [2021-10-28 22:52:20,362 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-28 22:52:20,363 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-28 22:52:20,363 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-28 22:52:20,363 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-28 22:52:20,363 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-28 22:52:20,364 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-28 22:52:20,364 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-28 22:52:20,364 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-28 22:52:20,380 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 16 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 15 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:52:20,403 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2021-10-28 22:52:20,404 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 22:52:20,404 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 22:52:20,411 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 22:52:20,411 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-28 22:52:20,412 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-28 22:52:20,412 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 16 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 15 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:52:20,415 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2021-10-28 22:52:20,415 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 22:52:20,416 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 22:52:20,416 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 22:52:20,416 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-28 22:52:20,424 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(11);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 10#L-1true havoc main_#res;havoc main_#t~nondet11, main_#t~nondet13, main_#t~post12, main_~j~0, main_#t~mem14.base, main_#t~mem14.offset, main_#t~mem15.base, main_#t~mem15.offset, main_#t~mem16.base, main_#t~mem16.offset, main_#t~mem17, main_#t~mem18.base, main_#t~mem18.offset, main_#t~mem19.base, main_#t~mem19.offset, main_#t~mem20, main_#t~pre22, main_#t~mem21, main_#t~ret23, main_~#cont~0.base, main_~#cont~0.offset, main_~#dummy~0.base, main_~#dummy~0.offset, main_~#dummies~0.base, main_~#dummies~0.offset, main_~#a~0.base, main_~#a~0.offset, main_~i~0, main_~pa~0.base, main_~pa~0.offset;call main_~#cont~0.base, main_~#cont~0.offset := #Ultimate.allocOnStack(4);call main_~#dummy~0.base, main_~#dummy~0.offset := #Ultimate.allocOnStack(4);call main_~#dummies~0.base, main_~#dummies~0.offset := #Ultimate.allocOnStack(40);call main_~#a~0.base, main_~#a~0.offset := #Ultimate.allocOnStack(40);havoc main_~i~0;havoc main_~pa~0.base, main_~pa~0.offset;main_~i~0 := main_#t~nondet11;havoc main_#t~nondet11;main_~j~0 := 0; 15#L29-3true [2021-10-28 22:52:20,424 INFO L793 eck$LassoCheckResult]: Loop: 15#L29-3true assume !!(main_~j~0 < 10);call write~int(main_#t~nondet13, main_~#a~0.base, main_~#a~0.offset + 4 * main_~j~0, 4);havoc main_#t~nondet13;call write~$Pointer$(0, 0, main_~#dummies~0.base, main_~#dummies~0.offset + 4 * main_~j~0, 4); 17#L29-2true main_#t~post12 := main_~j~0;main_~j~0 := 1 + main_#t~post12;havoc main_#t~post12; 15#L29-3true [2021-10-28 22:52:20,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:52:20,432 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-10-28 22:52:20,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:52:20,443 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890327759] [2021-10-28 22:52:20,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:52:20,445 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:52:20,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:52:20,590 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:52:20,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:52:20,649 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:52:20,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:52:20,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1283, now seen corresponding path program 1 times [2021-10-28 22:52:20,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:52:20,654 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895567174] [2021-10-28 22:52:20,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:52:20,655 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:52:20,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:52:20,673 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:52:20,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:52:20,708 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:52:20,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:52:20,711 INFO L85 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2021-10-28 22:52:20,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:52:20,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479106190] [2021-10-28 22:52:20,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:52:20,712 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:52:20,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:52:20,777 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:52:20,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:52:20,847 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:52:22,827 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 22:52:22,827 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 22:52:22,828 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 22:52:22,828 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 22:52:22,828 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 22:52:22,828 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:52:22,828 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 22:52:22,828 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 22:52:22,829 INFO L133 ssoRankerPreferences]: Filename of dumped script: test27-2.c_Iteration1_Lasso [2021-10-28 22:52:22,829 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 22:52:22,829 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 22:52:22,857 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:52:22,864 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:52:22,867 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:52:22,869 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:52:22,872 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:52:22,877 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:52:22,882 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:52:22,886 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:52:22,892 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:52:22,897 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:52:22,901 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:52:23,567 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:52:23,575 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:52:23,578 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:52:23,582 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:52:23,585 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:52:23,588 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:52:23,590 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:52:23,593 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:52:23,596 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:52:23,598 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:52:23,601 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:52:23,606 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:52:23,609 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:52:23,612 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:52:23,615 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:52:23,618 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:52:23,624 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:52:24,110 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 22:52:24,115 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 22:52:24,117 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:52:24,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:52:24,119 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:52:24,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-10-28 22:52:24,122 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 22:52:24,132 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 22:52:24,132 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 22:52:24,132 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 22:52:24,133 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 22:52:24,139 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 22:52:24,139 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 22:52:24,154 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 22:52:24,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-10-28 22:52:24,183 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:52:24,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:52:24,184 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:52:24,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-10-28 22:52:24,193 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 22:52:24,202 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 22:52:24,203 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 22:52:24,203 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 22:52:24,203 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 22:52:24,203 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 22:52:24,209 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 22:52:24,209 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 22:52:24,217 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 22:52:24,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-10-28 22:52:24,248 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:52:24,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:52:24,250 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:52:24,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-28 22:52:24,256 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 22:52:24,264 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 22:52:24,264 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 22:52:24,264 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 22:52:24,265 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 22:52:24,265 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 22:52:24,265 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 22:52:24,266 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 22:52:24,271 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 22:52:24,294 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2021-10-28 22:52:24,295 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:52:24,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:52:24,296 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:52:24,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-28 22:52:24,299 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 22:52:24,309 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 22:52:24,309 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 22:52:24,310 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 22:52:24,310 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 22:52:24,310 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 22:52:24,311 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 22:52:24,311 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 22:52:24,327 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 22:52:24,353 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-10-28 22:52:24,353 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:52:24,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:52:24,354 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:52:24,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-10-28 22:52:24,356 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 22:52:24,366 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 22:52:24,366 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 22:52:24,366 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 22:52:24,366 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 22:52:24,366 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 22:52:24,367 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 22:52:24,367 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 22:52:24,400 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 22:52:24,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-10-28 22:52:24,443 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:52:24,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:52:24,445 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:52:24,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-10-28 22:52:24,447 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 22:52:24,457 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 22:52:24,457 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 22:52:24,457 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 22:52:24,457 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 22:52:24,462 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 22:52:24,463 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 22:52:24,480 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 22:52:24,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-10-28 22:52:24,520 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:52:24,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:52:24,524 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:52:24,531 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 22:52:24,544 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 22:52:24,544 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 22:52:24,544 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 22:52:24,544 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 22:52:24,544 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 22:52:24,545 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 22:52:24,546 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 22:52:24,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-10-28 22:52:24,568 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 22:52:24,611 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-10-28 22:52:24,612 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:52:24,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:52:24,615 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:52:24,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-10-28 22:52:24,620 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 22:52:24,629 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 22:52:24,629 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 22:52:24,629 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 22:52:24,629 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 22:52:24,634 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 22:52:24,634 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 22:52:24,648 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 22:52:24,693 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-10-28 22:52:24,693 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:52:24,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:52:24,695 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:52:24,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-10-28 22:52:24,705 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 22:52:24,716 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 22:52:24,716 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 22:52:24,716 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 22:52:24,716 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 22:52:24,717 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 22:52:24,717 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 22:52:24,718 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 22:52:24,732 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 22:52:24,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-10-28 22:52:24,777 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:52:24,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:52:24,778 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:52:24,785 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 22:52:24,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-10-28 22:52:24,802 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 22:52:24,802 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 22:52:24,802 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 22:52:24,803 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 22:52:24,807 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 22:52:24,807 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 22:52:24,832 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 22:52:24,878 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-10-28 22:52:24,884 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:52:24,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:52:24,892 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:52:24,901 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 22:52:24,912 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 22:52:24,912 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 22:52:24,912 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 22:52:24,912 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 22:52:24,913 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 22:52:24,914 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 22:52:24,914 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 22:52:24,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-10-28 22:52:24,932 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 22:52:24,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-10-28 22:52:24,977 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:52:24,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:52:24,979 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:52:24,987 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 22:52:24,998 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 22:52:24,998 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 22:52:24,998 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 22:52:24,998 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 22:52:25,003 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 22:52:25,003 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 22:52:25,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-10-28 22:52:25,024 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 22:52:25,067 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-10-28 22:52:25,067 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:52:25,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:52:25,068 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:52:25,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-10-28 22:52:25,090 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 22:52:25,103 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 22:52:25,103 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 22:52:25,103 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 22:52:25,103 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 22:52:25,107 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 22:52:25,108 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 22:52:25,115 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 22:52:25,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-10-28 22:52:25,147 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:52:25,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:52:25,149 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:52:25,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-10-28 22:52:25,155 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 22:52:25,163 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 22:52:25,164 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 22:52:25,164 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 22:52:25,164 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 22:52:25,167 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 22:52:25,167 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 22:52:25,188 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 22:52:25,226 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-10-28 22:52:25,226 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:52:25,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:52:25,228 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:52:25,240 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 22:52:25,251 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 22:52:25,251 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 22:52:25,251 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 22:52:25,251 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 22:52:25,254 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 22:52:25,254 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 22:52:25,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-10-28 22:52:25,276 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 22:52:25,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-10-28 22:52:25,312 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:52:25,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:52:25,313 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:52:25,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-10-28 22:52:25,315 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 22:52:25,323 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 22:52:25,323 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 22:52:25,323 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 22:52:25,323 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 22:52:25,326 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 22:52:25,326 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 22:52:25,340 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 22:52:25,382 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-10-28 22:52:25,383 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:52:25,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:52:25,384 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:52:25,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-10-28 22:52:25,386 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 22:52:25,394 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 22:52:25,395 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 22:52:25,395 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 22:52:25,395 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 22:52:25,398 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 22:52:25,398 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 22:52:25,402 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 22:52:25,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-10-28 22:52:25,425 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:52:25,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:52:25,426 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:52:25,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-10-28 22:52:25,429 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 22:52:25,437 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 22:52:25,437 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 22:52:25,438 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 22:52:25,438 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 22:52:25,439 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 22:52:25,439 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 22:52:25,442 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 22:52:25,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-10-28 22:52:25,466 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:52:25,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:52:25,467 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:52:25,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-10-28 22:52:25,473 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 22:52:25,481 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 22:52:25,481 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 22:52:25,481 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 22:52:25,481 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 22:52:25,488 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 22:52:25,488 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 22:52:25,499 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 22:52:25,528 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-10-28 22:52:25,529 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:52:25,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:52:25,531 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:52:25,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-10-28 22:52:25,535 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 22:52:25,543 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 22:52:25,543 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 22:52:25,544 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 22:52:25,544 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 22:52:25,544 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 22:52:25,545 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 22:52:25,545 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 22:52:25,552 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 22:52:25,576 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-10-28 22:52:25,576 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:52:25,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:52:25,577 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:52:25,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-10-28 22:52:25,580 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 22:52:25,588 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 22:52:25,588 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 22:52:25,588 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 22:52:25,588 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 22:52:25,591 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 22:52:25,591 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 22:52:25,616 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 22:52:25,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2021-10-28 22:52:25,639 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:52:25,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:52:25,640 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:52:25,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-10-28 22:52:25,652 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 22:52:25,660 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 22:52:25,661 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 22:52:25,661 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 22:52:25,661 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 22:52:25,661 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 22:52:25,661 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 22:52:25,661 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 22:52:25,663 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 22:52:25,683 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-10-28 22:52:25,683 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:52:25,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:52:25,684 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:52:25,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-10-28 22:52:25,686 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 22:52:25,693 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 22:52:25,693 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 22:52:25,693 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 22:52:25,693 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 22:52:25,695 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 22:52:25,695 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 22:52:25,698 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 22:52:25,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2021-10-28 22:52:25,719 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:52:25,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:52:25,720 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:52:25,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-10-28 22:52:25,721 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 22:52:25,729 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 22:52:25,729 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 22:52:25,729 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 22:52:25,729 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 22:52:25,729 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 22:52:25,730 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 22:52:25,730 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 22:52:25,731 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 22:52:25,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-10-28 22:52:25,753 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:52:25,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:52:25,754 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:52:25,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-10-28 22:52:25,755 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 22:52:25,764 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 22:52:25,765 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 22:52:25,765 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 22:52:25,765 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 22:52:25,771 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 22:52:25,772 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 22:52:25,792 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 22:52:25,833 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2021-10-28 22:52:25,834 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:52:25,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:52:25,835 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:52:25,845 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 22:52:25,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-10-28 22:52:25,854 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 22:52:25,854 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 22:52:25,855 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 22:52:25,855 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 22:52:25,855 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 22:52:25,855 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 22:52:25,855 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 22:52:25,857 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 22:52:25,879 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2021-10-28 22:52:25,880 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:52:25,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:52:25,881 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:52:25,883 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 22:52:25,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-10-28 22:52:25,891 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 22:52:25,892 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 22:52:25,892 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 22:52:25,892 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 22:52:25,909 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 22:52:25,909 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 22:52:25,922 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 22:52:25,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2021-10-28 22:52:25,949 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:52:25,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:52:25,949 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:52:25,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-10-28 22:52:25,952 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 22:52:25,959 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 22:52:25,960 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 22:52:25,960 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 22:52:25,960 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 22:52:25,961 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 22:52:25,961 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 22:52:25,988 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 22:52:26,015 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2021-10-28 22:52:26,015 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:52:26,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:52:26,016 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:52:26,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-10-28 22:52:26,019 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 22:52:26,026 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 22:52:26,026 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 22:52:26,027 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 22:52:26,027 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 22:52:26,035 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 22:52:26,035 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 22:52:26,069 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 22:52:26,102 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2021-10-28 22:52:26,102 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:52:26,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:52:26,103 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:52:26,105 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 22:52:26,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-10-28 22:52:26,113 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 22:52:26,113 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 22:52:26,113 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 22:52:26,113 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 22:52:26,113 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 22:52:26,114 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 22:52:26,114 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 22:52:26,127 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 22:52:26,150 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2021-10-28 22:52:26,150 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:52:26,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:52:26,151 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:52:26,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-10-28 22:52:26,154 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 22:52:26,162 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 22:52:26,162 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 22:52:26,162 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 22:52:26,162 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 22:52:26,164 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 22:52:26,164 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 22:52:26,167 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 22:52:26,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2021-10-28 22:52:26,188 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:52:26,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:52:26,189 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:52:26,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-10-28 22:52:26,193 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 22:52:26,201 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 22:52:26,201 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 22:52:26,201 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 22:52:26,201 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 22:52:26,212 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 22:52:26,213 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 22:52:26,248 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 22:52:26,298 INFO L443 ModelExtractionUtils]: Simplification made 18 calls to the SMT solver. [2021-10-28 22:52:26,298 INFO L444 ModelExtractionUtils]: 8 out of 22 variables were initially zero. Simplification set additionally 11 variables to zero. [2021-10-28 22:52:26,300 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:52:26,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:52:26,309 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:52:26,310 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 22:52:26,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2021-10-28 22:52:26,333 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2021-10-28 22:52:26,334 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 22:52:26,334 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0, v_rep(select #length ULTIMATE.start_main_~#a~0.base)_1) = -8*ULTIMATE.start_main_~j~0 + 19*v_rep(select #length ULTIMATE.start_main_~#a~0.base)_1 Supporting invariants [] [2021-10-28 22:52:26,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2021-10-28 22:52:26,596 INFO L297 tatePredicateManager]: 30 out of 30 supporting invariants were superfluous and have been removed [2021-10-28 22:52:26,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:52:26,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:52:26,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 22:52:26,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:52:26,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:52:26,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 22:52:26,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:52:26,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:52:26,764 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-28 22:52:26,766 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 16 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 15 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:52:26,869 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 16 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 15 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 39 states and 56 transitions. Complement of second has 8 states. [2021-10-28 22:52:26,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 22:52:26,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:52:26,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 35 transitions. [2021-10-28 22:52:26,874 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 35 transitions. Stem has 2 letters. Loop has 2 letters. [2021-10-28 22:52:26,875 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 22:52:26,875 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 35 transitions. Stem has 4 letters. Loop has 2 letters. [2021-10-28 22:52:26,875 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 22:52:26,875 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 35 transitions. Stem has 2 letters. Loop has 4 letters. [2021-10-28 22:52:26,876 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 22:52:26,877 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 39 states and 56 transitions. [2021-10-28 22:52:26,881 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-28 22:52:26,911 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 39 states to 9 states and 11 transitions. [2021-10-28 22:52:26,913 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2021-10-28 22:52:26,913 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2021-10-28 22:52:26,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 11 transitions. [2021-10-28 22:52:26,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 22:52:26,914 INFO L681 BuchiCegarLoop]: Abstraction has 9 states and 11 transitions. [2021-10-28 22:52:26,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 11 transitions. [2021-10-28 22:52:26,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-28 22:52:26,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:52:26,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2021-10-28 22:52:26,941 INFO L704 BuchiCegarLoop]: Abstraction has 9 states and 11 transitions. [2021-10-28 22:52:26,942 INFO L587 BuchiCegarLoop]: Abstraction has 9 states and 11 transitions. [2021-10-28 22:52:26,942 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-28 22:52:26,942 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 11 transitions. [2021-10-28 22:52:26,943 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-28 22:52:26,943 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 22:52:26,943 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 22:52:26,943 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-10-28 22:52:26,944 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-28 22:52:26,944 INFO L791 eck$LassoCheckResult]: Stem: 215#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(11);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 216#L-1 havoc main_#res;havoc main_#t~nondet11, main_#t~nondet13, main_#t~post12, main_~j~0, main_#t~mem14.base, main_#t~mem14.offset, main_#t~mem15.base, main_#t~mem15.offset, main_#t~mem16.base, main_#t~mem16.offset, main_#t~mem17, main_#t~mem18.base, main_#t~mem18.offset, main_#t~mem19.base, main_#t~mem19.offset, main_#t~mem20, main_#t~pre22, main_#t~mem21, main_#t~ret23, main_~#cont~0.base, main_~#cont~0.offset, main_~#dummy~0.base, main_~#dummy~0.offset, main_~#dummies~0.base, main_~#dummies~0.offset, main_~#a~0.base, main_~#a~0.offset, main_~i~0, main_~pa~0.base, main_~pa~0.offset;call main_~#cont~0.base, main_~#cont~0.offset := #Ultimate.allocOnStack(4);call main_~#dummy~0.base, main_~#dummy~0.offset := #Ultimate.allocOnStack(4);call main_~#dummies~0.base, main_~#dummies~0.offset := #Ultimate.allocOnStack(40);call main_~#a~0.base, main_~#a~0.offset := #Ultimate.allocOnStack(40);havoc main_~i~0;havoc main_~pa~0.base, main_~pa~0.offset;main_~i~0 := main_#t~nondet11;havoc main_#t~nondet11;main_~j~0 := 0; 217#L29-3 assume !(main_~j~0 < 10); 218#L29-4 assume main_~i~0 >= 0 && main_~i~0 < 9;call write~int(main_~i~0, main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4);call write~$Pointer$(main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, main_~#dummy~0.base, main_~#dummy~0.offset, 4);call write~$Pointer$(main_~#dummy~0.base, main_~#dummy~0.offset, main_~#dummies~0.base, main_~#dummies~0.offset + 4 * (1 + main_~i~0), 4);call write~$Pointer$(main_~#dummies~0.base, main_~#dummies~0.offset, main_~#cont~0.base, main_~#cont~0.offset, 4);call main_#t~mem14.base, main_#t~mem14.offset := read~$Pointer$(main_~#cont~0.base, main_~#cont~0.offset, 4);call main_#t~mem15.base, main_#t~mem15.offset := read~$Pointer$(main_#t~mem14.base, main_#t~mem14.offset + 4 * main_~i~0, 4);call main_#t~mem16.base, main_#t~mem16.offset := read~$Pointer$(main_#t~mem15.base, main_#t~mem15.offset, 4);main_~pa~0.base, main_~pa~0.offset := main_#t~mem16.base, main_#t~mem16.offset + 4 * main_~i~0;havoc main_#t~mem14.base, main_#t~mem14.offset;havoc main_#t~mem15.base, main_#t~mem15.offset;havoc main_#t~mem16.base, main_#t~mem16.offset;call main_#t~mem17 := read~int(main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4); 221#L42 assume main_#t~mem17 > 0;havoc main_#t~mem17;call main_#t~mem18.base, main_#t~mem18.offset := read~$Pointer$(main_~#dummies~0.base, main_~#dummies~0.offset + 4 * (1 + main_~i~0), 4);call main_#t~mem19.base, main_#t~mem19.offset := read~$Pointer$(main_#t~mem18.base, main_#t~mem18.offset, 4);call main_#t~mem20 := read~int(main_#t~mem19.base, main_#t~mem19.offset + 4 * main_~i~0, 4);main_~i~0 := main_#t~mem20 - 10;havoc main_#t~mem18.base, main_#t~mem18.offset;havoc main_#t~mem19.base, main_#t~mem19.offset;havoc main_#t~mem20; 222#L44-3 [2021-10-28 22:52:26,944 INFO L793 eck$LassoCheckResult]: Loop: 222#L44-3 call main_#t~mem21 := read~int(main_~pa~0.base, main_~pa~0.offset, 4); 223#L44-1 assume !!(main_~i~0 < main_#t~mem21);havoc main_#t~mem21;main_#t~pre22 := 1 + main_~i~0;main_~i~0 := 1 + main_~i~0;havoc main_#t~pre22; 222#L44-3 [2021-10-28 22:52:26,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:52:26,945 INFO L85 PathProgramCache]: Analyzing trace with hash 28697000, now seen corresponding path program 1 times [2021-10-28 22:52:26,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:52:26,946 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733673326] [2021-10-28 22:52:26,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:52:26,946 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:52:26,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:52:27,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2021-10-28 22:52:27,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:52:27,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:52:27,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733673326] [2021-10-28 22:52:27,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733673326] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:52:27,034 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:52:27,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 22:52:27,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163782798] [2021-10-28 22:52:27,037 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 22:52:27,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:52:27,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1798, now seen corresponding path program 1 times [2021-10-28 22:52:27,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:52:27,038 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238599414] [2021-10-28 22:52:27,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:52:27,039 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:52:27,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:52:27,048 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:52:27,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:52:27,061 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:52:27,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:52:27,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 22:52:27,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 22:52:27,106 INFO L87 Difference]: Start difference. First operand 9 states and 11 transitions. cyclomatic complexity: 4 Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:52:27,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:52:27,123 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2021-10-28 22:52:27,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 22:52:27,124 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 11 transitions. [2021-10-28 22:52:27,125 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-28 22:52:27,128 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 10 states and 11 transitions. [2021-10-28 22:52:27,128 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-10-28 22:52:27,128 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2021-10-28 22:52:27,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 11 transitions. [2021-10-28 22:52:27,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 22:52:27,129 INFO L681 BuchiCegarLoop]: Abstraction has 10 states and 11 transitions. [2021-10-28 22:52:27,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 11 transitions. [2021-10-28 22:52:27,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2021-10-28 22:52:27,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:52:27,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2021-10-28 22:52:27,133 INFO L704 BuchiCegarLoop]: Abstraction has 9 states and 10 transitions. [2021-10-28 22:52:27,133 INFO L587 BuchiCegarLoop]: Abstraction has 9 states and 10 transitions. [2021-10-28 22:52:27,133 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-28 22:52:27,134 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 10 transitions. [2021-10-28 22:52:27,135 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-28 22:52:27,135 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 22:52:27,135 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 22:52:27,136 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:52:27,136 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-28 22:52:27,136 INFO L791 eck$LassoCheckResult]: Stem: 240#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(11);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 241#L-1 havoc main_#res;havoc main_#t~nondet11, main_#t~nondet13, main_#t~post12, main_~j~0, main_#t~mem14.base, main_#t~mem14.offset, main_#t~mem15.base, main_#t~mem15.offset, main_#t~mem16.base, main_#t~mem16.offset, main_#t~mem17, main_#t~mem18.base, main_#t~mem18.offset, main_#t~mem19.base, main_#t~mem19.offset, main_#t~mem20, main_#t~pre22, main_#t~mem21, main_#t~ret23, main_~#cont~0.base, main_~#cont~0.offset, main_~#dummy~0.base, main_~#dummy~0.offset, main_~#dummies~0.base, main_~#dummies~0.offset, main_~#a~0.base, main_~#a~0.offset, main_~i~0, main_~pa~0.base, main_~pa~0.offset;call main_~#cont~0.base, main_~#cont~0.offset := #Ultimate.allocOnStack(4);call main_~#dummy~0.base, main_~#dummy~0.offset := #Ultimate.allocOnStack(4);call main_~#dummies~0.base, main_~#dummies~0.offset := #Ultimate.allocOnStack(40);call main_~#a~0.base, main_~#a~0.offset := #Ultimate.allocOnStack(40);havoc main_~i~0;havoc main_~pa~0.base, main_~pa~0.offset;main_~i~0 := main_#t~nondet11;havoc main_#t~nondet11;main_~j~0 := 0; 242#L29-3 assume !!(main_~j~0 < 10);call write~int(main_#t~nondet13, main_~#a~0.base, main_~#a~0.offset + 4 * main_~j~0, 4);havoc main_#t~nondet13;call write~$Pointer$(0, 0, main_~#dummies~0.base, main_~#dummies~0.offset + 4 * main_~j~0, 4); 243#L29-2 main_#t~post12 := main_~j~0;main_~j~0 := 1 + main_#t~post12;havoc main_#t~post12; 244#L29-3 assume !(main_~j~0 < 10); 245#L29-4 assume main_~i~0 >= 0 && main_~i~0 < 9;call write~int(main_~i~0, main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4);call write~$Pointer$(main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, main_~#dummy~0.base, main_~#dummy~0.offset, 4);call write~$Pointer$(main_~#dummy~0.base, main_~#dummy~0.offset, main_~#dummies~0.base, main_~#dummies~0.offset + 4 * (1 + main_~i~0), 4);call write~$Pointer$(main_~#dummies~0.base, main_~#dummies~0.offset, main_~#cont~0.base, main_~#cont~0.offset, 4);call main_#t~mem14.base, main_#t~mem14.offset := read~$Pointer$(main_~#cont~0.base, main_~#cont~0.offset, 4);call main_#t~mem15.base, main_#t~mem15.offset := read~$Pointer$(main_#t~mem14.base, main_#t~mem14.offset + 4 * main_~i~0, 4);call main_#t~mem16.base, main_#t~mem16.offset := read~$Pointer$(main_#t~mem15.base, main_#t~mem15.offset, 4);main_~pa~0.base, main_~pa~0.offset := main_#t~mem16.base, main_#t~mem16.offset + 4 * main_~i~0;havoc main_#t~mem14.base, main_#t~mem14.offset;havoc main_#t~mem15.base, main_#t~mem15.offset;havoc main_#t~mem16.base, main_#t~mem16.offset;call main_#t~mem17 := read~int(main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4); 246#L42 assume main_#t~mem17 > 0;havoc main_#t~mem17;call main_#t~mem18.base, main_#t~mem18.offset := read~$Pointer$(main_~#dummies~0.base, main_~#dummies~0.offset + 4 * (1 + main_~i~0), 4);call main_#t~mem19.base, main_#t~mem19.offset := read~$Pointer$(main_#t~mem18.base, main_#t~mem18.offset, 4);call main_#t~mem20 := read~int(main_#t~mem19.base, main_#t~mem19.offset + 4 * main_~i~0, 4);main_~i~0 := main_#t~mem20 - 10;havoc main_#t~mem18.base, main_#t~mem18.offset;havoc main_#t~mem19.base, main_#t~mem19.offset;havoc main_#t~mem20; 247#L44-3 [2021-10-28 22:52:27,136 INFO L793 eck$LassoCheckResult]: Loop: 247#L44-3 call main_#t~mem21 := read~int(main_~pa~0.base, main_~pa~0.offset, 4); 248#L44-1 assume !!(main_~i~0 < main_#t~mem21);havoc main_#t~mem21;main_#t~pre22 := 1 + main_~i~0;main_~i~0 := 1 + main_~i~0;havoc main_#t~pre22; 247#L44-3 [2021-10-28 22:52:27,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:52:27,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1809669606, now seen corresponding path program 1 times [2021-10-28 22:52:27,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:52:27,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102342900] [2021-10-28 22:52:27,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:52:27,139 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:52:27,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:52:27,205 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:52:27,206 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:52:27,206 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102342900] [2021-10-28 22:52:27,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102342900] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:52:27,206 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945695386] [2021-10-28 22:52:27,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:52:27,207 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:52:27,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:52:27,216 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:52:27,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-10-28 22:52:27,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:52:27,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 22:52:27,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:52:27,318 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:52:27,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945695386] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:52:27,318 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 22:52:27,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-10-28 22:52:27,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756347724] [2021-10-28 22:52:27,319 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 22:52:27,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:52:27,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1798, now seen corresponding path program 2 times [2021-10-28 22:52:27,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:52:27,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627905731] [2021-10-28 22:52:27,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:52:27,320 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:52:27,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:52:27,330 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:52:27,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:52:27,341 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:52:27,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:52:27,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 22:52:27,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-28 22:52:27,378 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. cyclomatic complexity: 3 Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:52:27,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:52:27,402 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2021-10-28 22:52:27,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 22:52:27,403 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 13 transitions. [2021-10-28 22:52:27,404 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-28 22:52:27,405 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 12 states and 13 transitions. [2021-10-28 22:52:27,405 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-10-28 22:52:27,405 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2021-10-28 22:52:27,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 13 transitions. [2021-10-28 22:52:27,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 22:52:27,406 INFO L681 BuchiCegarLoop]: Abstraction has 12 states and 13 transitions. [2021-10-28 22:52:27,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 13 transitions. [2021-10-28 22:52:27,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2021-10-28 22:52:27,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:52:27,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2021-10-28 22:52:27,407 INFO L704 BuchiCegarLoop]: Abstraction has 11 states and 12 transitions. [2021-10-28 22:52:27,408 INFO L587 BuchiCegarLoop]: Abstraction has 11 states and 12 transitions. [2021-10-28 22:52:27,408 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-28 22:52:27,408 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 12 transitions. [2021-10-28 22:52:27,410 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-28 22:52:27,410 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 22:52:27,410 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 22:52:27,411 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1] [2021-10-28 22:52:27,412 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-28 22:52:27,412 INFO L791 eck$LassoCheckResult]: Stem: 287#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(11);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 288#L-1 havoc main_#res;havoc main_#t~nondet11, main_#t~nondet13, main_#t~post12, main_~j~0, main_#t~mem14.base, main_#t~mem14.offset, main_#t~mem15.base, main_#t~mem15.offset, main_#t~mem16.base, main_#t~mem16.offset, main_#t~mem17, main_#t~mem18.base, main_#t~mem18.offset, main_#t~mem19.base, main_#t~mem19.offset, main_#t~mem20, main_#t~pre22, main_#t~mem21, main_#t~ret23, main_~#cont~0.base, main_~#cont~0.offset, main_~#dummy~0.base, main_~#dummy~0.offset, main_~#dummies~0.base, main_~#dummies~0.offset, main_~#a~0.base, main_~#a~0.offset, main_~i~0, main_~pa~0.base, main_~pa~0.offset;call main_~#cont~0.base, main_~#cont~0.offset := #Ultimate.allocOnStack(4);call main_~#dummy~0.base, main_~#dummy~0.offset := #Ultimate.allocOnStack(4);call main_~#dummies~0.base, main_~#dummies~0.offset := #Ultimate.allocOnStack(40);call main_~#a~0.base, main_~#a~0.offset := #Ultimate.allocOnStack(40);havoc main_~i~0;havoc main_~pa~0.base, main_~pa~0.offset;main_~i~0 := main_#t~nondet11;havoc main_#t~nondet11;main_~j~0 := 0; 289#L29-3 assume !!(main_~j~0 < 10);call write~int(main_#t~nondet13, main_~#a~0.base, main_~#a~0.offset + 4 * main_~j~0, 4);havoc main_#t~nondet13;call write~$Pointer$(0, 0, main_~#dummies~0.base, main_~#dummies~0.offset + 4 * main_~j~0, 4); 290#L29-2 main_#t~post12 := main_~j~0;main_~j~0 := 1 + main_#t~post12;havoc main_#t~post12; 291#L29-3 assume !!(main_~j~0 < 10);call write~int(main_#t~nondet13, main_~#a~0.base, main_~#a~0.offset + 4 * main_~j~0, 4);havoc main_#t~nondet13;call write~$Pointer$(0, 0, main_~#dummies~0.base, main_~#dummies~0.offset + 4 * main_~j~0, 4); 292#L29-2 main_#t~post12 := main_~j~0;main_~j~0 := 1 + main_#t~post12;havoc main_#t~post12; 297#L29-3 assume !(main_~j~0 < 10); 293#L29-4 assume main_~i~0 >= 0 && main_~i~0 < 9;call write~int(main_~i~0, main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4);call write~$Pointer$(main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, main_~#dummy~0.base, main_~#dummy~0.offset, 4);call write~$Pointer$(main_~#dummy~0.base, main_~#dummy~0.offset, main_~#dummies~0.base, main_~#dummies~0.offset + 4 * (1 + main_~i~0), 4);call write~$Pointer$(main_~#dummies~0.base, main_~#dummies~0.offset, main_~#cont~0.base, main_~#cont~0.offset, 4);call main_#t~mem14.base, main_#t~mem14.offset := read~$Pointer$(main_~#cont~0.base, main_~#cont~0.offset, 4);call main_#t~mem15.base, main_#t~mem15.offset := read~$Pointer$(main_#t~mem14.base, main_#t~mem14.offset + 4 * main_~i~0, 4);call main_#t~mem16.base, main_#t~mem16.offset := read~$Pointer$(main_#t~mem15.base, main_#t~mem15.offset, 4);main_~pa~0.base, main_~pa~0.offset := main_#t~mem16.base, main_#t~mem16.offset + 4 * main_~i~0;havoc main_#t~mem14.base, main_#t~mem14.offset;havoc main_#t~mem15.base, main_#t~mem15.offset;havoc main_#t~mem16.base, main_#t~mem16.offset;call main_#t~mem17 := read~int(main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4); 294#L42 assume main_#t~mem17 > 0;havoc main_#t~mem17;call main_#t~mem18.base, main_#t~mem18.offset := read~$Pointer$(main_~#dummies~0.base, main_~#dummies~0.offset + 4 * (1 + main_~i~0), 4);call main_#t~mem19.base, main_#t~mem19.offset := read~$Pointer$(main_#t~mem18.base, main_#t~mem18.offset, 4);call main_#t~mem20 := read~int(main_#t~mem19.base, main_#t~mem19.offset + 4 * main_~i~0, 4);main_~i~0 := main_#t~mem20 - 10;havoc main_#t~mem18.base, main_#t~mem18.offset;havoc main_#t~mem19.base, main_#t~mem19.offset;havoc main_#t~mem20; 295#L44-3 [2021-10-28 22:52:27,412 INFO L793 eck$LassoCheckResult]: Loop: 295#L44-3 call main_#t~mem21 := read~int(main_~pa~0.base, main_~pa~0.offset, 4); 296#L44-1 assume !!(main_~i~0 < main_#t~mem21);havoc main_#t~mem21;main_#t~pre22 := 1 + main_~i~0;main_~i~0 := 1 + main_~i~0;havoc main_#t~pre22; 295#L44-3 [2021-10-28 22:52:27,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:52:27,412 INFO L85 PathProgramCache]: Analyzing trace with hash -367607132, now seen corresponding path program 2 times [2021-10-28 22:52:27,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:52:27,419 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490652228] [2021-10-28 22:52:27,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:52:27,420 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:52:27,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:52:27,502 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:52:27,502 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:52:27,502 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490652228] [2021-10-28 22:52:27,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490652228] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:52:27,502 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497488121] [2021-10-28 22:52:27,503 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 22:52:27,503 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:52:27,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:52:27,509 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:52:27,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-10-28 22:52:27,599 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 22:52:27,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 22:52:27,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 22:52:27,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:52:27,637 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:52:27,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497488121] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:52:27,639 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 22:52:27,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-10-28 22:52:27,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490651238] [2021-10-28 22:52:27,640 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 22:52:27,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:52:27,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1798, now seen corresponding path program 3 times [2021-10-28 22:52:27,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:52:27,641 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367328591] [2021-10-28 22:52:27,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:52:27,641 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:52:27,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:52:27,646 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:52:27,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:52:27,659 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:52:27,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:52:27,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 22:52:27,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-28 22:52:27,696 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. cyclomatic complexity: 3 Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:52:27,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:52:27,727 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2021-10-28 22:52:27,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 22:52:27,729 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 15 transitions. [2021-10-28 22:52:27,731 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-28 22:52:27,737 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 14 states and 15 transitions. [2021-10-28 22:52:27,737 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-10-28 22:52:27,737 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2021-10-28 22:52:27,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 15 transitions. [2021-10-28 22:52:27,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 22:52:27,738 INFO L681 BuchiCegarLoop]: Abstraction has 14 states and 15 transitions. [2021-10-28 22:52:27,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 15 transitions. [2021-10-28 22:52:27,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2021-10-28 22:52:27,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:52:27,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2021-10-28 22:52:27,741 INFO L704 BuchiCegarLoop]: Abstraction has 13 states and 14 transitions. [2021-10-28 22:52:27,741 INFO L587 BuchiCegarLoop]: Abstraction has 13 states and 14 transitions. [2021-10-28 22:52:27,741 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-28 22:52:27,741 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 14 transitions. [2021-10-28 22:52:27,742 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-28 22:52:27,742 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 22:52:27,742 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 22:52:27,742 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 3, 1, 1, 1, 1, 1] [2021-10-28 22:52:27,743 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-28 22:52:27,743 INFO L791 eck$LassoCheckResult]: Stem: 345#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(11);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 346#L-1 havoc main_#res;havoc main_#t~nondet11, main_#t~nondet13, main_#t~post12, main_~j~0, main_#t~mem14.base, main_#t~mem14.offset, main_#t~mem15.base, main_#t~mem15.offset, main_#t~mem16.base, main_#t~mem16.offset, main_#t~mem17, main_#t~mem18.base, main_#t~mem18.offset, main_#t~mem19.base, main_#t~mem19.offset, main_#t~mem20, main_#t~pre22, main_#t~mem21, main_#t~ret23, main_~#cont~0.base, main_~#cont~0.offset, main_~#dummy~0.base, main_~#dummy~0.offset, main_~#dummies~0.base, main_~#dummies~0.offset, main_~#a~0.base, main_~#a~0.offset, main_~i~0, main_~pa~0.base, main_~pa~0.offset;call main_~#cont~0.base, main_~#cont~0.offset := #Ultimate.allocOnStack(4);call main_~#dummy~0.base, main_~#dummy~0.offset := #Ultimate.allocOnStack(4);call main_~#dummies~0.base, main_~#dummies~0.offset := #Ultimate.allocOnStack(40);call main_~#a~0.base, main_~#a~0.offset := #Ultimate.allocOnStack(40);havoc main_~i~0;havoc main_~pa~0.base, main_~pa~0.offset;main_~i~0 := main_#t~nondet11;havoc main_#t~nondet11;main_~j~0 := 0; 347#L29-3 assume !!(main_~j~0 < 10);call write~int(main_#t~nondet13, main_~#a~0.base, main_~#a~0.offset + 4 * main_~j~0, 4);havoc main_#t~nondet13;call write~$Pointer$(0, 0, main_~#dummies~0.base, main_~#dummies~0.offset + 4 * main_~j~0, 4); 348#L29-2 main_#t~post12 := main_~j~0;main_~j~0 := 1 + main_#t~post12;havoc main_#t~post12; 355#L29-3 assume !!(main_~j~0 < 10);call write~int(main_#t~nondet13, main_~#a~0.base, main_~#a~0.offset + 4 * main_~j~0, 4);havoc main_#t~nondet13;call write~$Pointer$(0, 0, main_~#dummies~0.base, main_~#dummies~0.offset + 4 * main_~j~0, 4); 357#L29-2 main_#t~post12 := main_~j~0;main_~j~0 := 1 + main_#t~post12;havoc main_#t~post12; 349#L29-3 assume !!(main_~j~0 < 10);call write~int(main_#t~nondet13, main_~#a~0.base, main_~#a~0.offset + 4 * main_~j~0, 4);havoc main_#t~nondet13;call write~$Pointer$(0, 0, main_~#dummies~0.base, main_~#dummies~0.offset + 4 * main_~j~0, 4); 350#L29-2 main_#t~post12 := main_~j~0;main_~j~0 := 1 + main_#t~post12;havoc main_#t~post12; 356#L29-3 assume !(main_~j~0 < 10); 351#L29-4 assume main_~i~0 >= 0 && main_~i~0 < 9;call write~int(main_~i~0, main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4);call write~$Pointer$(main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, main_~#dummy~0.base, main_~#dummy~0.offset, 4);call write~$Pointer$(main_~#dummy~0.base, main_~#dummy~0.offset, main_~#dummies~0.base, main_~#dummies~0.offset + 4 * (1 + main_~i~0), 4);call write~$Pointer$(main_~#dummies~0.base, main_~#dummies~0.offset, main_~#cont~0.base, main_~#cont~0.offset, 4);call main_#t~mem14.base, main_#t~mem14.offset := read~$Pointer$(main_~#cont~0.base, main_~#cont~0.offset, 4);call main_#t~mem15.base, main_#t~mem15.offset := read~$Pointer$(main_#t~mem14.base, main_#t~mem14.offset + 4 * main_~i~0, 4);call main_#t~mem16.base, main_#t~mem16.offset := read~$Pointer$(main_#t~mem15.base, main_#t~mem15.offset, 4);main_~pa~0.base, main_~pa~0.offset := main_#t~mem16.base, main_#t~mem16.offset + 4 * main_~i~0;havoc main_#t~mem14.base, main_#t~mem14.offset;havoc main_#t~mem15.base, main_#t~mem15.offset;havoc main_#t~mem16.base, main_#t~mem16.offset;call main_#t~mem17 := read~int(main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4); 352#L42 assume main_#t~mem17 > 0;havoc main_#t~mem17;call main_#t~mem18.base, main_#t~mem18.offset := read~$Pointer$(main_~#dummies~0.base, main_~#dummies~0.offset + 4 * (1 + main_~i~0), 4);call main_#t~mem19.base, main_#t~mem19.offset := read~$Pointer$(main_#t~mem18.base, main_#t~mem18.offset, 4);call main_#t~mem20 := read~int(main_#t~mem19.base, main_#t~mem19.offset + 4 * main_~i~0, 4);main_~i~0 := main_#t~mem20 - 10;havoc main_#t~mem18.base, main_#t~mem18.offset;havoc main_#t~mem19.base, main_#t~mem19.offset;havoc main_#t~mem20; 353#L44-3 [2021-10-28 22:52:27,743 INFO L793 eck$LassoCheckResult]: Loop: 353#L44-3 call main_#t~mem21 := read~int(main_~pa~0.base, main_~pa~0.offset, 4); 354#L44-1 assume !!(main_~i~0 < main_#t~mem21);havoc main_#t~mem21;main_#t~pre22 := 1 + main_~i~0;main_~i~0 := 1 + main_~i~0;havoc main_#t~pre22; 353#L44-3 [2021-10-28 22:52:27,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:52:27,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1081479198, now seen corresponding path program 3 times [2021-10-28 22:52:27,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:52:27,744 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625490213] [2021-10-28 22:52:27,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:52:27,744 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:52:27,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:52:27,866 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:52:27,866 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:52:27,866 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625490213] [2021-10-28 22:52:27,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625490213] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:52:27,867 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82133152] [2021-10-28 22:52:27,867 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 22:52:27,867 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:52:27,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:52:27,876 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:52:27,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-10-28 22:52:28,201 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-28 22:52:28,201 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 22:52:28,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 22:52:28,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:52:28,254 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:52:28,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82133152] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:52:28,254 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 22:52:28,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2021-10-28 22:52:28,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440343000] [2021-10-28 22:52:28,256 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 22:52:28,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:52:28,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1798, now seen corresponding path program 4 times [2021-10-28 22:52:28,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:52:28,257 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108432319] [2021-10-28 22:52:28,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:52:28,257 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:52:28,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:52:28,263 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:52:28,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:52:28,269 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:52:28,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:52:28,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 22:52:28,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-28 22:52:28,315 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. cyclomatic complexity: 3 Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:52:28,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:52:28,354 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2021-10-28 22:52:28,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 22:52:28,355 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 17 transitions. [2021-10-28 22:52:28,357 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-28 22:52:28,358 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 16 states and 17 transitions. [2021-10-28 22:52:28,358 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-10-28 22:52:28,358 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2021-10-28 22:52:28,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 17 transitions. [2021-10-28 22:52:28,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 22:52:28,359 INFO L681 BuchiCegarLoop]: Abstraction has 16 states and 17 transitions. [2021-10-28 22:52:28,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 17 transitions. [2021-10-28 22:52:28,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2021-10-28 22:52:28,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:52:28,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-10-28 22:52:28,363 INFO L704 BuchiCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-10-28 22:52:28,363 INFO L587 BuchiCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-10-28 22:52:28,363 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-10-28 22:52:28,364 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 16 transitions. [2021-10-28 22:52:28,365 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-28 22:52:28,365 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 22:52:28,365 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 22:52:28,366 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [4, 4, 1, 1, 1, 1, 1] [2021-10-28 22:52:28,366 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-28 22:52:28,367 INFO L791 eck$LassoCheckResult]: Stem: 414#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(11);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 415#L-1 havoc main_#res;havoc main_#t~nondet11, main_#t~nondet13, main_#t~post12, main_~j~0, main_#t~mem14.base, main_#t~mem14.offset, main_#t~mem15.base, main_#t~mem15.offset, main_#t~mem16.base, main_#t~mem16.offset, main_#t~mem17, main_#t~mem18.base, main_#t~mem18.offset, main_#t~mem19.base, main_#t~mem19.offset, main_#t~mem20, main_#t~pre22, main_#t~mem21, main_#t~ret23, main_~#cont~0.base, main_~#cont~0.offset, main_~#dummy~0.base, main_~#dummy~0.offset, main_~#dummies~0.base, main_~#dummies~0.offset, main_~#a~0.base, main_~#a~0.offset, main_~i~0, main_~pa~0.base, main_~pa~0.offset;call main_~#cont~0.base, main_~#cont~0.offset := #Ultimate.allocOnStack(4);call main_~#dummy~0.base, main_~#dummy~0.offset := #Ultimate.allocOnStack(4);call main_~#dummies~0.base, main_~#dummies~0.offset := #Ultimate.allocOnStack(40);call main_~#a~0.base, main_~#a~0.offset := #Ultimate.allocOnStack(40);havoc main_~i~0;havoc main_~pa~0.base, main_~pa~0.offset;main_~i~0 := main_#t~nondet11;havoc main_#t~nondet11;main_~j~0 := 0; 416#L29-3 assume !!(main_~j~0 < 10);call write~int(main_#t~nondet13, main_~#a~0.base, main_~#a~0.offset + 4 * main_~j~0, 4);havoc main_#t~nondet13;call write~$Pointer$(0, 0, main_~#dummies~0.base, main_~#dummies~0.offset + 4 * main_~j~0, 4); 417#L29-2 main_#t~post12 := main_~j~0;main_~j~0 := 1 + main_#t~post12;havoc main_#t~post12; 418#L29-3 assume !!(main_~j~0 < 10);call write~int(main_#t~nondet13, main_~#a~0.base, main_~#a~0.offset + 4 * main_~j~0, 4);havoc main_#t~nondet13;call write~$Pointer$(0, 0, main_~#dummies~0.base, main_~#dummies~0.offset + 4 * main_~j~0, 4); 419#L29-2 main_#t~post12 := main_~j~0;main_~j~0 := 1 + main_#t~post12;havoc main_#t~post12; 424#L29-3 assume !!(main_~j~0 < 10);call write~int(main_#t~nondet13, main_~#a~0.base, main_~#a~0.offset + 4 * main_~j~0, 4);havoc main_#t~nondet13;call write~$Pointer$(0, 0, main_~#dummies~0.base, main_~#dummies~0.offset + 4 * main_~j~0, 4); 428#L29-2 main_#t~post12 := main_~j~0;main_~j~0 := 1 + main_#t~post12;havoc main_#t~post12; 427#L29-3 assume !!(main_~j~0 < 10);call write~int(main_#t~nondet13, main_~#a~0.base, main_~#a~0.offset + 4 * main_~j~0, 4);havoc main_#t~nondet13;call write~$Pointer$(0, 0, main_~#dummies~0.base, main_~#dummies~0.offset + 4 * main_~j~0, 4); 426#L29-2 main_#t~post12 := main_~j~0;main_~j~0 := 1 + main_#t~post12;havoc main_#t~post12; 425#L29-3 assume !(main_~j~0 < 10); 420#L29-4 assume main_~i~0 >= 0 && main_~i~0 < 9;call write~int(main_~i~0, main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4);call write~$Pointer$(main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, main_~#dummy~0.base, main_~#dummy~0.offset, 4);call write~$Pointer$(main_~#dummy~0.base, main_~#dummy~0.offset, main_~#dummies~0.base, main_~#dummies~0.offset + 4 * (1 + main_~i~0), 4);call write~$Pointer$(main_~#dummies~0.base, main_~#dummies~0.offset, main_~#cont~0.base, main_~#cont~0.offset, 4);call main_#t~mem14.base, main_#t~mem14.offset := read~$Pointer$(main_~#cont~0.base, main_~#cont~0.offset, 4);call main_#t~mem15.base, main_#t~mem15.offset := read~$Pointer$(main_#t~mem14.base, main_#t~mem14.offset + 4 * main_~i~0, 4);call main_#t~mem16.base, main_#t~mem16.offset := read~$Pointer$(main_#t~mem15.base, main_#t~mem15.offset, 4);main_~pa~0.base, main_~pa~0.offset := main_#t~mem16.base, main_#t~mem16.offset + 4 * main_~i~0;havoc main_#t~mem14.base, main_#t~mem14.offset;havoc main_#t~mem15.base, main_#t~mem15.offset;havoc main_#t~mem16.base, main_#t~mem16.offset;call main_#t~mem17 := read~int(main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4); 421#L42 assume main_#t~mem17 > 0;havoc main_#t~mem17;call main_#t~mem18.base, main_#t~mem18.offset := read~$Pointer$(main_~#dummies~0.base, main_~#dummies~0.offset + 4 * (1 + main_~i~0), 4);call main_#t~mem19.base, main_#t~mem19.offset := read~$Pointer$(main_#t~mem18.base, main_#t~mem18.offset, 4);call main_#t~mem20 := read~int(main_#t~mem19.base, main_#t~mem19.offset + 4 * main_~i~0, 4);main_~i~0 := main_#t~mem20 - 10;havoc main_#t~mem18.base, main_#t~mem18.offset;havoc main_#t~mem19.base, main_#t~mem19.offset;havoc main_#t~mem20; 422#L44-3 [2021-10-28 22:52:28,367 INFO L793 eck$LassoCheckResult]: Loop: 422#L44-3 call main_#t~mem21 := read~int(main_~pa~0.base, main_~pa~0.offset, 4); 423#L44-1 assume !!(main_~i~0 < main_#t~mem21);havoc main_#t~mem21;main_#t~pre22 := 1 + main_~i~0;main_~i~0 := 1 + main_~i~0;havoc main_#t~pre22; 422#L44-3 [2021-10-28 22:52:28,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:52:28,368 INFO L85 PathProgramCache]: Analyzing trace with hash 82232736, now seen corresponding path program 4 times [2021-10-28 22:52:28,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:52:28,368 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267506679] [2021-10-28 22:52:28,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:52:28,369 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:52:28,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:52:28,471 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:52:28,472 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:52:28,472 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267506679] [2021-10-28 22:52:28,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267506679] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:52:28,472 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050577070] [2021-10-28 22:52:28,472 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-28 22:52:28,472 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:52:28,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:52:28,480 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:52:28,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-10-28 22:52:28,817 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-28 22:52:28,817 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 22:52:28,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 22:52:28,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:52:28,868 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:52:28,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1050577070] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:52:28,868 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 22:52:28,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2021-10-28 22:52:28,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046257353] [2021-10-28 22:52:28,869 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 22:52:28,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:52:28,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1798, now seen corresponding path program 5 times [2021-10-28 22:52:28,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:52:28,870 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550772971] [2021-10-28 22:52:28,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:52:28,870 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:52:28,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:52:28,875 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:52:28,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:52:28,883 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:52:28,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:52:28,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 22:52:28,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-28 22:52:28,916 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. cyclomatic complexity: 3 Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:52:28,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:52:28,952 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2021-10-28 22:52:28,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 22:52:28,954 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 19 transitions. [2021-10-28 22:52:28,955 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-28 22:52:28,955 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 18 states and 19 transitions. [2021-10-28 22:52:28,955 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-10-28 22:52:28,956 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2021-10-28 22:52:28,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 19 transitions. [2021-10-28 22:52:28,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 22:52:28,956 INFO L681 BuchiCegarLoop]: Abstraction has 18 states and 19 transitions. [2021-10-28 22:52:28,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 19 transitions. [2021-10-28 22:52:28,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2021-10-28 22:52:28,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:52:28,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2021-10-28 22:52:28,959 INFO L704 BuchiCegarLoop]: Abstraction has 17 states and 18 transitions. [2021-10-28 22:52:28,959 INFO L587 BuchiCegarLoop]: Abstraction has 17 states and 18 transitions. [2021-10-28 22:52:28,959 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-10-28 22:52:28,959 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 18 transitions. [2021-10-28 22:52:28,960 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-28 22:52:28,960 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 22:52:28,960 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 22:52:28,960 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [5, 5, 1, 1, 1, 1, 1] [2021-10-28 22:52:28,961 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-28 22:52:28,961 INFO L791 eck$LassoCheckResult]: Stem: 498#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(11);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 499#L-1 havoc main_#res;havoc main_#t~nondet11, main_#t~nondet13, main_#t~post12, main_~j~0, main_#t~mem14.base, main_#t~mem14.offset, main_#t~mem15.base, main_#t~mem15.offset, main_#t~mem16.base, main_#t~mem16.offset, main_#t~mem17, main_#t~mem18.base, main_#t~mem18.offset, main_#t~mem19.base, main_#t~mem19.offset, main_#t~mem20, main_#t~pre22, main_#t~mem21, main_#t~ret23, main_~#cont~0.base, main_~#cont~0.offset, main_~#dummy~0.base, main_~#dummy~0.offset, main_~#dummies~0.base, main_~#dummies~0.offset, main_~#a~0.base, main_~#a~0.offset, main_~i~0, main_~pa~0.base, main_~pa~0.offset;call main_~#cont~0.base, main_~#cont~0.offset := #Ultimate.allocOnStack(4);call main_~#dummy~0.base, main_~#dummy~0.offset := #Ultimate.allocOnStack(4);call main_~#dummies~0.base, main_~#dummies~0.offset := #Ultimate.allocOnStack(40);call main_~#a~0.base, main_~#a~0.offset := #Ultimate.allocOnStack(40);havoc main_~i~0;havoc main_~pa~0.base, main_~pa~0.offset;main_~i~0 := main_#t~nondet11;havoc main_#t~nondet11;main_~j~0 := 0; 494#L29-3 assume !!(main_~j~0 < 10);call write~int(main_#t~nondet13, main_~#a~0.base, main_~#a~0.offset + 4 * main_~j~0, 4);havoc main_#t~nondet13;call write~$Pointer$(0, 0, main_~#dummies~0.base, main_~#dummies~0.offset + 4 * main_~j~0, 4); 495#L29-2 main_#t~post12 := main_~j~0;main_~j~0 := 1 + main_#t~post12;havoc main_#t~post12; 496#L29-3 assume !!(main_~j~0 < 10);call write~int(main_#t~nondet13, main_~#a~0.base, main_~#a~0.offset + 4 * main_~j~0, 4);havoc main_#t~nondet13;call write~$Pointer$(0, 0, main_~#dummies~0.base, main_~#dummies~0.offset + 4 * main_~j~0, 4); 497#L29-2 main_#t~post12 := main_~j~0;main_~j~0 := 1 + main_#t~post12;havoc main_#t~post12; 504#L29-3 assume !!(main_~j~0 < 10);call write~int(main_#t~nondet13, main_~#a~0.base, main_~#a~0.offset + 4 * main_~j~0, 4);havoc main_#t~nondet13;call write~$Pointer$(0, 0, main_~#dummies~0.base, main_~#dummies~0.offset + 4 * main_~j~0, 4); 510#L29-2 main_#t~post12 := main_~j~0;main_~j~0 := 1 + main_#t~post12;havoc main_#t~post12; 509#L29-3 assume !!(main_~j~0 < 10);call write~int(main_#t~nondet13, main_~#a~0.base, main_~#a~0.offset + 4 * main_~j~0, 4);havoc main_#t~nondet13;call write~$Pointer$(0, 0, main_~#dummies~0.base, main_~#dummies~0.offset + 4 * main_~j~0, 4); 508#L29-2 main_#t~post12 := main_~j~0;main_~j~0 := 1 + main_#t~post12;havoc main_#t~post12; 507#L29-3 assume !!(main_~j~0 < 10);call write~int(main_#t~nondet13, main_~#a~0.base, main_~#a~0.offset + 4 * main_~j~0, 4);havoc main_#t~nondet13;call write~$Pointer$(0, 0, main_~#dummies~0.base, main_~#dummies~0.offset + 4 * main_~j~0, 4); 506#L29-2 main_#t~post12 := main_~j~0;main_~j~0 := 1 + main_#t~post12;havoc main_#t~post12; 505#L29-3 assume !(main_~j~0 < 10); 500#L29-4 assume main_~i~0 >= 0 && main_~i~0 < 9;call write~int(main_~i~0, main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4);call write~$Pointer$(main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, main_~#dummy~0.base, main_~#dummy~0.offset, 4);call write~$Pointer$(main_~#dummy~0.base, main_~#dummy~0.offset, main_~#dummies~0.base, main_~#dummies~0.offset + 4 * (1 + main_~i~0), 4);call write~$Pointer$(main_~#dummies~0.base, main_~#dummies~0.offset, main_~#cont~0.base, main_~#cont~0.offset, 4);call main_#t~mem14.base, main_#t~mem14.offset := read~$Pointer$(main_~#cont~0.base, main_~#cont~0.offset, 4);call main_#t~mem15.base, main_#t~mem15.offset := read~$Pointer$(main_#t~mem14.base, main_#t~mem14.offset + 4 * main_~i~0, 4);call main_#t~mem16.base, main_#t~mem16.offset := read~$Pointer$(main_#t~mem15.base, main_#t~mem15.offset, 4);main_~pa~0.base, main_~pa~0.offset := main_#t~mem16.base, main_#t~mem16.offset + 4 * main_~i~0;havoc main_#t~mem14.base, main_#t~mem14.offset;havoc main_#t~mem15.base, main_#t~mem15.offset;havoc main_#t~mem16.base, main_#t~mem16.offset;call main_#t~mem17 := read~int(main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4); 501#L42 assume main_#t~mem17 > 0;havoc main_#t~mem17;call main_#t~mem18.base, main_#t~mem18.offset := read~$Pointer$(main_~#dummies~0.base, main_~#dummies~0.offset + 4 * (1 + main_~i~0), 4);call main_#t~mem19.base, main_#t~mem19.offset := read~$Pointer$(main_#t~mem18.base, main_#t~mem18.offset, 4);call main_#t~mem20 := read~int(main_#t~mem19.base, main_#t~mem19.offset + 4 * main_~i~0, 4);main_~i~0 := main_#t~mem20 - 10;havoc main_#t~mem18.base, main_#t~mem18.offset;havoc main_#t~mem19.base, main_#t~mem19.offset;havoc main_#t~mem20; 502#L44-3 [2021-10-28 22:52:28,961 INFO L793 eck$LassoCheckResult]: Loop: 502#L44-3 call main_#t~mem21 := read~int(main_~pa~0.base, main_~pa~0.offset, 4); 503#L44-1 assume !!(main_~i~0 < main_#t~mem21);havoc main_#t~mem21;main_#t~pre22 := 1 + main_~i~0;main_~i~0 := 1 + main_~i~0;havoc main_#t~pre22; 502#L44-3 [2021-10-28 22:52:28,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:52:28,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1717904350, now seen corresponding path program 5 times [2021-10-28 22:52:28,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:52:28,962 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458523448] [2021-10-28 22:52:28,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:52:28,962 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:52:28,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:52:29,062 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:52:29,062 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:52:29,062 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458523448] [2021-10-28 22:52:29,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458523448] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:52:29,062 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1120749218] [2021-10-28 22:52:29,063 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-28 22:52:29,063 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:52:29,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:52:29,064 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:52:29,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-10-28 22:52:29,303 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-10-28 22:52:29,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 22:52:29,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 22:52:29,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:52:29,357 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:52:29,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1120749218] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:52:29,358 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 22:52:29,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2021-10-28 22:52:29,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179881887] [2021-10-28 22:52:29,358 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 22:52:29,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:52:29,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1798, now seen corresponding path program 6 times [2021-10-28 22:52:29,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:52:29,359 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127283890] [2021-10-28 22:52:29,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:52:29,359 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:52:29,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:52:29,362 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:52:29,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:52:29,366 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:52:29,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:52:29,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 22:52:29,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-10-28 22:52:29,409 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. cyclomatic complexity: 3 Second operand has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:52:29,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:52:29,442 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2021-10-28 22:52:29,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 22:52:29,443 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 21 transitions. [2021-10-28 22:52:29,443 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-28 22:52:29,444 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 20 states and 21 transitions. [2021-10-28 22:52:29,444 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-10-28 22:52:29,444 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2021-10-28 22:52:29,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 21 transitions. [2021-10-28 22:52:29,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 22:52:29,445 INFO L681 BuchiCegarLoop]: Abstraction has 20 states and 21 transitions. [2021-10-28 22:52:29,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 21 transitions. [2021-10-28 22:52:29,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2021-10-28 22:52:29,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:52:29,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2021-10-28 22:52:29,447 INFO L704 BuchiCegarLoop]: Abstraction has 19 states and 20 transitions. [2021-10-28 22:52:29,447 INFO L587 BuchiCegarLoop]: Abstraction has 19 states and 20 transitions. [2021-10-28 22:52:29,447 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-10-28 22:52:29,447 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 20 transitions. [2021-10-28 22:52:29,447 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-28 22:52:29,448 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 22:52:29,448 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 22:52:29,448 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [6, 6, 1, 1, 1, 1, 1] [2021-10-28 22:52:29,448 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-28 22:52:29,449 INFO L791 eck$LassoCheckResult]: Stem: 589#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(11);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 590#L-1 havoc main_#res;havoc main_#t~nondet11, main_#t~nondet13, main_#t~post12, main_~j~0, main_#t~mem14.base, main_#t~mem14.offset, main_#t~mem15.base, main_#t~mem15.offset, main_#t~mem16.base, main_#t~mem16.offset, main_#t~mem17, main_#t~mem18.base, main_#t~mem18.offset, main_#t~mem19.base, main_#t~mem19.offset, main_#t~mem20, main_#t~pre22, main_#t~mem21, main_#t~ret23, main_~#cont~0.base, main_~#cont~0.offset, main_~#dummy~0.base, main_~#dummy~0.offset, main_~#dummies~0.base, main_~#dummies~0.offset, main_~#a~0.base, main_~#a~0.offset, main_~i~0, main_~pa~0.base, main_~pa~0.offset;call main_~#cont~0.base, main_~#cont~0.offset := #Ultimate.allocOnStack(4);call main_~#dummy~0.base, main_~#dummy~0.offset := #Ultimate.allocOnStack(4);call main_~#dummies~0.base, main_~#dummies~0.offset := #Ultimate.allocOnStack(40);call main_~#a~0.base, main_~#a~0.offset := #Ultimate.allocOnStack(40);havoc main_~i~0;havoc main_~pa~0.base, main_~pa~0.offset;main_~i~0 := main_#t~nondet11;havoc main_#t~nondet11;main_~j~0 := 0; 585#L29-3 assume !!(main_~j~0 < 10);call write~int(main_#t~nondet13, main_~#a~0.base, main_~#a~0.offset + 4 * main_~j~0, 4);havoc main_#t~nondet13;call write~$Pointer$(0, 0, main_~#dummies~0.base, main_~#dummies~0.offset + 4 * main_~j~0, 4); 586#L29-2 main_#t~post12 := main_~j~0;main_~j~0 := 1 + main_#t~post12;havoc main_#t~post12; 587#L29-3 assume !!(main_~j~0 < 10);call write~int(main_#t~nondet13, main_~#a~0.base, main_~#a~0.offset + 4 * main_~j~0, 4);havoc main_#t~nondet13;call write~$Pointer$(0, 0, main_~#dummies~0.base, main_~#dummies~0.offset + 4 * main_~j~0, 4); 588#L29-2 main_#t~post12 := main_~j~0;main_~j~0 := 1 + main_#t~post12;havoc main_#t~post12; 595#L29-3 assume !!(main_~j~0 < 10);call write~int(main_#t~nondet13, main_~#a~0.base, main_~#a~0.offset + 4 * main_~j~0, 4);havoc main_#t~nondet13;call write~$Pointer$(0, 0, main_~#dummies~0.base, main_~#dummies~0.offset + 4 * main_~j~0, 4); 603#L29-2 main_#t~post12 := main_~j~0;main_~j~0 := 1 + main_#t~post12;havoc main_#t~post12; 602#L29-3 assume !!(main_~j~0 < 10);call write~int(main_#t~nondet13, main_~#a~0.base, main_~#a~0.offset + 4 * main_~j~0, 4);havoc main_#t~nondet13;call write~$Pointer$(0, 0, main_~#dummies~0.base, main_~#dummies~0.offset + 4 * main_~j~0, 4); 601#L29-2 main_#t~post12 := main_~j~0;main_~j~0 := 1 + main_#t~post12;havoc main_#t~post12; 600#L29-3 assume !!(main_~j~0 < 10);call write~int(main_#t~nondet13, main_~#a~0.base, main_~#a~0.offset + 4 * main_~j~0, 4);havoc main_#t~nondet13;call write~$Pointer$(0, 0, main_~#dummies~0.base, main_~#dummies~0.offset + 4 * main_~j~0, 4); 599#L29-2 main_#t~post12 := main_~j~0;main_~j~0 := 1 + main_#t~post12;havoc main_#t~post12; 598#L29-3 assume !!(main_~j~0 < 10);call write~int(main_#t~nondet13, main_~#a~0.base, main_~#a~0.offset + 4 * main_~j~0, 4);havoc main_#t~nondet13;call write~$Pointer$(0, 0, main_~#dummies~0.base, main_~#dummies~0.offset + 4 * main_~j~0, 4); 597#L29-2 main_#t~post12 := main_~j~0;main_~j~0 := 1 + main_#t~post12;havoc main_#t~post12; 596#L29-3 assume !(main_~j~0 < 10); 591#L29-4 assume main_~i~0 >= 0 && main_~i~0 < 9;call write~int(main_~i~0, main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4);call write~$Pointer$(main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, main_~#dummy~0.base, main_~#dummy~0.offset, 4);call write~$Pointer$(main_~#dummy~0.base, main_~#dummy~0.offset, main_~#dummies~0.base, main_~#dummies~0.offset + 4 * (1 + main_~i~0), 4);call write~$Pointer$(main_~#dummies~0.base, main_~#dummies~0.offset, main_~#cont~0.base, main_~#cont~0.offset, 4);call main_#t~mem14.base, main_#t~mem14.offset := read~$Pointer$(main_~#cont~0.base, main_~#cont~0.offset, 4);call main_#t~mem15.base, main_#t~mem15.offset := read~$Pointer$(main_#t~mem14.base, main_#t~mem14.offset + 4 * main_~i~0, 4);call main_#t~mem16.base, main_#t~mem16.offset := read~$Pointer$(main_#t~mem15.base, main_#t~mem15.offset, 4);main_~pa~0.base, main_~pa~0.offset := main_#t~mem16.base, main_#t~mem16.offset + 4 * main_~i~0;havoc main_#t~mem14.base, main_#t~mem14.offset;havoc main_#t~mem15.base, main_#t~mem15.offset;havoc main_#t~mem16.base, main_#t~mem16.offset;call main_#t~mem17 := read~int(main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4); 592#L42 assume main_#t~mem17 > 0;havoc main_#t~mem17;call main_#t~mem18.base, main_#t~mem18.offset := read~$Pointer$(main_~#dummies~0.base, main_~#dummies~0.offset + 4 * (1 + main_~i~0), 4);call main_#t~mem19.base, main_#t~mem19.offset := read~$Pointer$(main_#t~mem18.base, main_#t~mem18.offset, 4);call main_#t~mem20 := read~int(main_#t~mem19.base, main_#t~mem19.offset + 4 * main_~i~0, 4);main_~i~0 := main_#t~mem20 - 10;havoc main_#t~mem18.base, main_#t~mem18.offset;havoc main_#t~mem19.base, main_#t~mem19.offset;havoc main_#t~mem20; 593#L44-3 [2021-10-28 22:52:29,449 INFO L793 eck$LassoCheckResult]: Loop: 593#L44-3 call main_#t~mem21 := read~int(main_~pa~0.base, main_~pa~0.offset, 4); 594#L44-1 assume !!(main_~i~0 < main_#t~mem21);havoc main_#t~mem21;main_#t~pre22 := 1 + main_~i~0;main_~i~0 := 1 + main_~i~0;havoc main_#t~pre22; 593#L44-3 [2021-10-28 22:52:29,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:52:29,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1640295068, now seen corresponding path program 6 times [2021-10-28 22:52:29,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:52:29,450 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483150605] [2021-10-28 22:52:29,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:52:29,450 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:52:29,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:52:29,529 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:52:29,529 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:52:29,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483150605] [2021-10-28 22:52:29,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483150605] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:52:29,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195037753] [2021-10-28 22:52:29,530 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-28 22:52:29,530 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:52:29,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:52:29,536 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:52:29,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2021-10-28 22:52:30,325 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-10-28 22:52:30,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 22:52:30,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 22:52:30,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:52:30,431 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:52:30,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195037753] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:52:30,431 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 22:52:30,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2021-10-28 22:52:30,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477899553] [2021-10-28 22:52:30,432 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 22:52:30,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:52:30,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1798, now seen corresponding path program 7 times [2021-10-28 22:52:30,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:52:30,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481805790] [2021-10-28 22:52:30,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:52:30,433 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:52:30,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:52:30,436 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:52:30,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:52:30,439 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:52:30,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:52:30,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 22:52:30,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-10-28 22:52:30,469 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. cyclomatic complexity: 3 Second operand has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:52:30,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:52:30,508 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2021-10-28 22:52:30,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 22:52:30,509 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 23 transitions. [2021-10-28 22:52:30,512 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-28 22:52:30,513 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 22 states and 23 transitions. [2021-10-28 22:52:30,513 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-10-28 22:52:30,513 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2021-10-28 22:52:30,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 23 transitions. [2021-10-28 22:52:30,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 22:52:30,513 INFO L681 BuchiCegarLoop]: Abstraction has 22 states and 23 transitions. [2021-10-28 22:52:30,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 23 transitions. [2021-10-28 22:52:30,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2021-10-28 22:52:30,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 21 states have (on average 1.0476190476190477) internal successors, (22), 20 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:52:30,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2021-10-28 22:52:30,515 INFO L704 BuchiCegarLoop]: Abstraction has 21 states and 22 transitions. [2021-10-28 22:52:30,515 INFO L587 BuchiCegarLoop]: Abstraction has 21 states and 22 transitions. [2021-10-28 22:52:30,515 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-10-28 22:52:30,515 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states and 22 transitions. [2021-10-28 22:52:30,515 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-28 22:52:30,515 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 22:52:30,515 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 22:52:30,517 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [7, 7, 1, 1, 1, 1, 1] [2021-10-28 22:52:30,517 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-28 22:52:30,518 INFO L791 eck$LassoCheckResult]: Stem: 691#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(11);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 692#L-1 havoc main_#res;havoc main_#t~nondet11, main_#t~nondet13, main_#t~post12, main_~j~0, main_#t~mem14.base, main_#t~mem14.offset, main_#t~mem15.base, main_#t~mem15.offset, main_#t~mem16.base, main_#t~mem16.offset, main_#t~mem17, main_#t~mem18.base, main_#t~mem18.offset, main_#t~mem19.base, main_#t~mem19.offset, main_#t~mem20, main_#t~pre22, main_#t~mem21, main_#t~ret23, main_~#cont~0.base, main_~#cont~0.offset, main_~#dummy~0.base, main_~#dummy~0.offset, main_~#dummies~0.base, main_~#dummies~0.offset, main_~#a~0.base, main_~#a~0.offset, main_~i~0, main_~pa~0.base, main_~pa~0.offset;call main_~#cont~0.base, main_~#cont~0.offset := #Ultimate.allocOnStack(4);call main_~#dummy~0.base, main_~#dummy~0.offset := #Ultimate.allocOnStack(4);call main_~#dummies~0.base, main_~#dummies~0.offset := #Ultimate.allocOnStack(40);call main_~#a~0.base, main_~#a~0.offset := #Ultimate.allocOnStack(40);havoc main_~i~0;havoc main_~pa~0.base, main_~pa~0.offset;main_~i~0 := main_#t~nondet11;havoc main_#t~nondet11;main_~j~0 := 0; 687#L29-3 assume !!(main_~j~0 < 10);call write~int(main_#t~nondet13, main_~#a~0.base, main_~#a~0.offset + 4 * main_~j~0, 4);havoc main_#t~nondet13;call write~$Pointer$(0, 0, main_~#dummies~0.base, main_~#dummies~0.offset + 4 * main_~j~0, 4); 688#L29-2 main_#t~post12 := main_~j~0;main_~j~0 := 1 + main_#t~post12;havoc main_#t~post12; 689#L29-3 assume !!(main_~j~0 < 10);call write~int(main_#t~nondet13, main_~#a~0.base, main_~#a~0.offset + 4 * main_~j~0, 4);havoc main_#t~nondet13;call write~$Pointer$(0, 0, main_~#dummies~0.base, main_~#dummies~0.offset + 4 * main_~j~0, 4); 690#L29-2 main_#t~post12 := main_~j~0;main_~j~0 := 1 + main_#t~post12;havoc main_#t~post12; 697#L29-3 assume !!(main_~j~0 < 10);call write~int(main_#t~nondet13, main_~#a~0.base, main_~#a~0.offset + 4 * main_~j~0, 4);havoc main_#t~nondet13;call write~$Pointer$(0, 0, main_~#dummies~0.base, main_~#dummies~0.offset + 4 * main_~j~0, 4); 707#L29-2 main_#t~post12 := main_~j~0;main_~j~0 := 1 + main_#t~post12;havoc main_#t~post12; 706#L29-3 assume !!(main_~j~0 < 10);call write~int(main_#t~nondet13, main_~#a~0.base, main_~#a~0.offset + 4 * main_~j~0, 4);havoc main_#t~nondet13;call write~$Pointer$(0, 0, main_~#dummies~0.base, main_~#dummies~0.offset + 4 * main_~j~0, 4); 705#L29-2 main_#t~post12 := main_~j~0;main_~j~0 := 1 + main_#t~post12;havoc main_#t~post12; 704#L29-3 assume !!(main_~j~0 < 10);call write~int(main_#t~nondet13, main_~#a~0.base, main_~#a~0.offset + 4 * main_~j~0, 4);havoc main_#t~nondet13;call write~$Pointer$(0, 0, main_~#dummies~0.base, main_~#dummies~0.offset + 4 * main_~j~0, 4); 703#L29-2 main_#t~post12 := main_~j~0;main_~j~0 := 1 + main_#t~post12;havoc main_#t~post12; 702#L29-3 assume !!(main_~j~0 < 10);call write~int(main_#t~nondet13, main_~#a~0.base, main_~#a~0.offset + 4 * main_~j~0, 4);havoc main_#t~nondet13;call write~$Pointer$(0, 0, main_~#dummies~0.base, main_~#dummies~0.offset + 4 * main_~j~0, 4); 701#L29-2 main_#t~post12 := main_~j~0;main_~j~0 := 1 + main_#t~post12;havoc main_#t~post12; 700#L29-3 assume !!(main_~j~0 < 10);call write~int(main_#t~nondet13, main_~#a~0.base, main_~#a~0.offset + 4 * main_~j~0, 4);havoc main_#t~nondet13;call write~$Pointer$(0, 0, main_~#dummies~0.base, main_~#dummies~0.offset + 4 * main_~j~0, 4); 699#L29-2 main_#t~post12 := main_~j~0;main_~j~0 := 1 + main_#t~post12;havoc main_#t~post12; 698#L29-3 assume !(main_~j~0 < 10); 693#L29-4 assume main_~i~0 >= 0 && main_~i~0 < 9;call write~int(main_~i~0, main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4);call write~$Pointer$(main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, main_~#dummy~0.base, main_~#dummy~0.offset, 4);call write~$Pointer$(main_~#dummy~0.base, main_~#dummy~0.offset, main_~#dummies~0.base, main_~#dummies~0.offset + 4 * (1 + main_~i~0), 4);call write~$Pointer$(main_~#dummies~0.base, main_~#dummies~0.offset, main_~#cont~0.base, main_~#cont~0.offset, 4);call main_#t~mem14.base, main_#t~mem14.offset := read~$Pointer$(main_~#cont~0.base, main_~#cont~0.offset, 4);call main_#t~mem15.base, main_#t~mem15.offset := read~$Pointer$(main_#t~mem14.base, main_#t~mem14.offset + 4 * main_~i~0, 4);call main_#t~mem16.base, main_#t~mem16.offset := read~$Pointer$(main_#t~mem15.base, main_#t~mem15.offset, 4);main_~pa~0.base, main_~pa~0.offset := main_#t~mem16.base, main_#t~mem16.offset + 4 * main_~i~0;havoc main_#t~mem14.base, main_#t~mem14.offset;havoc main_#t~mem15.base, main_#t~mem15.offset;havoc main_#t~mem16.base, main_#t~mem16.offset;call main_#t~mem17 := read~int(main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4); 694#L42 assume main_#t~mem17 > 0;havoc main_#t~mem17;call main_#t~mem18.base, main_#t~mem18.offset := read~$Pointer$(main_~#dummies~0.base, main_~#dummies~0.offset + 4 * (1 + main_~i~0), 4);call main_#t~mem19.base, main_#t~mem19.offset := read~$Pointer$(main_#t~mem18.base, main_#t~mem18.offset, 4);call main_#t~mem20 := read~int(main_#t~mem19.base, main_#t~mem19.offset + 4 * main_~i~0, 4);main_~i~0 := main_#t~mem20 - 10;havoc main_#t~mem18.base, main_#t~mem18.offset;havoc main_#t~mem19.base, main_#t~mem19.offset;havoc main_#t~mem20; 695#L44-3 [2021-10-28 22:52:30,518 INFO L793 eck$LassoCheckResult]: Loop: 695#L44-3 call main_#t~mem21 := read~int(main_~pa~0.base, main_~pa~0.offset, 4); 696#L44-1 assume !!(main_~i~0 < main_#t~mem21);havoc main_#t~mem21;main_#t~pre22 := 1 + main_~i~0;main_~i~0 := 1 + main_~i~0;havoc main_#t~pre22; 695#L44-3 [2021-10-28 22:52:30,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:52:30,518 INFO L85 PathProgramCache]: Analyzing trace with hash 72219098, now seen corresponding path program 7 times [2021-10-28 22:52:30,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:52:30,518 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081349906] [2021-10-28 22:52:30,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:52:30,518 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:52:30,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:52:30,637 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:52:30,637 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:52:30,637 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081349906] [2021-10-28 22:52:30,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081349906] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:52:30,637 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581577886] [2021-10-28 22:52:30,637 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-28 22:52:30,637 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:52:30,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:52:30,639 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:52:30,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2021-10-28 22:52:30,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:52:30,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 22:52:30,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:52:30,809 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:52:30,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581577886] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:52:30,810 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 22:52:30,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2021-10-28 22:52:30,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569124855] [2021-10-28 22:52:30,811 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 22:52:30,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:52:30,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1798, now seen corresponding path program 8 times [2021-10-28 22:52:30,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:52:30,812 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332500624] [2021-10-28 22:52:30,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:52:30,812 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:52:30,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:52:30,815 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:52:30,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:52:30,818 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:52:30,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:52:30,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 22:52:30,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-10-28 22:52:30,848 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. cyclomatic complexity: 3 Second operand has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:52:30,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:52:30,897 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2021-10-28 22:52:30,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 22:52:30,898 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 25 transitions. [2021-10-28 22:52:30,899 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-28 22:52:30,899 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 24 states and 25 transitions. [2021-10-28 22:52:30,899 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-10-28 22:52:30,900 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2021-10-28 22:52:30,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 25 transitions. [2021-10-28 22:52:30,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 22:52:30,900 INFO L681 BuchiCegarLoop]: Abstraction has 24 states and 25 transitions. [2021-10-28 22:52:30,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 25 transitions. [2021-10-28 22:52:30,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2021-10-28 22:52:30,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 22 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:52:30,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2021-10-28 22:52:30,903 INFO L704 BuchiCegarLoop]: Abstraction has 23 states and 24 transitions. [2021-10-28 22:52:30,903 INFO L587 BuchiCegarLoop]: Abstraction has 23 states and 24 transitions. [2021-10-28 22:52:30,903 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-10-28 22:52:30,903 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states and 24 transitions. [2021-10-28 22:52:30,904 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-28 22:52:30,904 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 22:52:30,904 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 22:52:30,905 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [8, 8, 1, 1, 1, 1, 1] [2021-10-28 22:52:30,905 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-28 22:52:30,905 INFO L791 eck$LassoCheckResult]: Stem: 800#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(11);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 801#L-1 havoc main_#res;havoc main_#t~nondet11, main_#t~nondet13, main_#t~post12, main_~j~0, main_#t~mem14.base, main_#t~mem14.offset, main_#t~mem15.base, main_#t~mem15.offset, main_#t~mem16.base, main_#t~mem16.offset, main_#t~mem17, main_#t~mem18.base, main_#t~mem18.offset, main_#t~mem19.base, main_#t~mem19.offset, main_#t~mem20, main_#t~pre22, main_#t~mem21, main_#t~ret23, main_~#cont~0.base, main_~#cont~0.offset, main_~#dummy~0.base, main_~#dummy~0.offset, main_~#dummies~0.base, main_~#dummies~0.offset, main_~#a~0.base, main_~#a~0.offset, main_~i~0, main_~pa~0.base, main_~pa~0.offset;call main_~#cont~0.base, main_~#cont~0.offset := #Ultimate.allocOnStack(4);call main_~#dummy~0.base, main_~#dummy~0.offset := #Ultimate.allocOnStack(4);call main_~#dummies~0.base, main_~#dummies~0.offset := #Ultimate.allocOnStack(40);call main_~#a~0.base, main_~#a~0.offset := #Ultimate.allocOnStack(40);havoc main_~i~0;havoc main_~pa~0.base, main_~pa~0.offset;main_~i~0 := main_#t~nondet11;havoc main_#t~nondet11;main_~j~0 := 0; 802#L29-3 assume !!(main_~j~0 < 10);call write~int(main_#t~nondet13, main_~#a~0.base, main_~#a~0.offset + 4 * main_~j~0, 4);havoc main_#t~nondet13;call write~$Pointer$(0, 0, main_~#dummies~0.base, main_~#dummies~0.offset + 4 * main_~j~0, 4); 803#L29-2 main_#t~post12 := main_~j~0;main_~j~0 := 1 + main_#t~post12;havoc main_#t~post12; 804#L29-3 assume !!(main_~j~0 < 10);call write~int(main_#t~nondet13, main_~#a~0.base, main_~#a~0.offset + 4 * main_~j~0, 4);havoc main_#t~nondet13;call write~$Pointer$(0, 0, main_~#dummies~0.base, main_~#dummies~0.offset + 4 * main_~j~0, 4); 805#L29-2 main_#t~post12 := main_~j~0;main_~j~0 := 1 + main_#t~post12;havoc main_#t~post12; 810#L29-3 assume !!(main_~j~0 < 10);call write~int(main_#t~nondet13, main_~#a~0.base, main_~#a~0.offset + 4 * main_~j~0, 4);havoc main_#t~nondet13;call write~$Pointer$(0, 0, main_~#dummies~0.base, main_~#dummies~0.offset + 4 * main_~j~0, 4); 822#L29-2 main_#t~post12 := main_~j~0;main_~j~0 := 1 + main_#t~post12;havoc main_#t~post12; 821#L29-3 assume !!(main_~j~0 < 10);call write~int(main_#t~nondet13, main_~#a~0.base, main_~#a~0.offset + 4 * main_~j~0, 4);havoc main_#t~nondet13;call write~$Pointer$(0, 0, main_~#dummies~0.base, main_~#dummies~0.offset + 4 * main_~j~0, 4); 820#L29-2 main_#t~post12 := main_~j~0;main_~j~0 := 1 + main_#t~post12;havoc main_#t~post12; 819#L29-3 assume !!(main_~j~0 < 10);call write~int(main_#t~nondet13, main_~#a~0.base, main_~#a~0.offset + 4 * main_~j~0, 4);havoc main_#t~nondet13;call write~$Pointer$(0, 0, main_~#dummies~0.base, main_~#dummies~0.offset + 4 * main_~j~0, 4); 818#L29-2 main_#t~post12 := main_~j~0;main_~j~0 := 1 + main_#t~post12;havoc main_#t~post12; 817#L29-3 assume !!(main_~j~0 < 10);call write~int(main_#t~nondet13, main_~#a~0.base, main_~#a~0.offset + 4 * main_~j~0, 4);havoc main_#t~nondet13;call write~$Pointer$(0, 0, main_~#dummies~0.base, main_~#dummies~0.offset + 4 * main_~j~0, 4); 816#L29-2 main_#t~post12 := main_~j~0;main_~j~0 := 1 + main_#t~post12;havoc main_#t~post12; 815#L29-3 assume !!(main_~j~0 < 10);call write~int(main_#t~nondet13, main_~#a~0.base, main_~#a~0.offset + 4 * main_~j~0, 4);havoc main_#t~nondet13;call write~$Pointer$(0, 0, main_~#dummies~0.base, main_~#dummies~0.offset + 4 * main_~j~0, 4); 814#L29-2 main_#t~post12 := main_~j~0;main_~j~0 := 1 + main_#t~post12;havoc main_#t~post12; 813#L29-3 assume !!(main_~j~0 < 10);call write~int(main_#t~nondet13, main_~#a~0.base, main_~#a~0.offset + 4 * main_~j~0, 4);havoc main_#t~nondet13;call write~$Pointer$(0, 0, main_~#dummies~0.base, main_~#dummies~0.offset + 4 * main_~j~0, 4); 812#L29-2 main_#t~post12 := main_~j~0;main_~j~0 := 1 + main_#t~post12;havoc main_#t~post12; 811#L29-3 assume !(main_~j~0 < 10); 806#L29-4 assume main_~i~0 >= 0 && main_~i~0 < 9;call write~int(main_~i~0, main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4);call write~$Pointer$(main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, main_~#dummy~0.base, main_~#dummy~0.offset, 4);call write~$Pointer$(main_~#dummy~0.base, main_~#dummy~0.offset, main_~#dummies~0.base, main_~#dummies~0.offset + 4 * (1 + main_~i~0), 4);call write~$Pointer$(main_~#dummies~0.base, main_~#dummies~0.offset, main_~#cont~0.base, main_~#cont~0.offset, 4);call main_#t~mem14.base, main_#t~mem14.offset := read~$Pointer$(main_~#cont~0.base, main_~#cont~0.offset, 4);call main_#t~mem15.base, main_#t~mem15.offset := read~$Pointer$(main_#t~mem14.base, main_#t~mem14.offset + 4 * main_~i~0, 4);call main_#t~mem16.base, main_#t~mem16.offset := read~$Pointer$(main_#t~mem15.base, main_#t~mem15.offset, 4);main_~pa~0.base, main_~pa~0.offset := main_#t~mem16.base, main_#t~mem16.offset + 4 * main_~i~0;havoc main_#t~mem14.base, main_#t~mem14.offset;havoc main_#t~mem15.base, main_#t~mem15.offset;havoc main_#t~mem16.base, main_#t~mem16.offset;call main_#t~mem17 := read~int(main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4); 807#L42 assume main_#t~mem17 > 0;havoc main_#t~mem17;call main_#t~mem18.base, main_#t~mem18.offset := read~$Pointer$(main_~#dummies~0.base, main_~#dummies~0.offset + 4 * (1 + main_~i~0), 4);call main_#t~mem19.base, main_#t~mem19.offset := read~$Pointer$(main_#t~mem18.base, main_#t~mem18.offset, 4);call main_#t~mem20 := read~int(main_#t~mem19.base, main_#t~mem19.offset + 4 * main_~i~0, 4);main_~i~0 := main_#t~mem20 - 10;havoc main_#t~mem18.base, main_#t~mem18.offset;havoc main_#t~mem19.base, main_#t~mem19.offset;havoc main_#t~mem20; 808#L44-3 [2021-10-28 22:52:30,905 INFO L793 eck$LassoCheckResult]: Loop: 808#L44-3 call main_#t~mem21 := read~int(main_~pa~0.base, main_~pa~0.offset, 4); 809#L44-1 assume !!(main_~i~0 < main_#t~mem21);havoc main_#t~mem21;main_#t~pre22 := 1 + main_~i~0;main_~i~0 := 1 + main_~i~0;havoc main_#t~pre22; 808#L44-3 [2021-10-28 22:52:30,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:52:30,906 INFO L85 PathProgramCache]: Analyzing trace with hash 684732824, now seen corresponding path program 8 times [2021-10-28 22:52:30,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:52:30,906 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104767712] [2021-10-28 22:52:30,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:52:30,906 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:52:30,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:52:31,008 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:52:31,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:52:31,008 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104767712] [2021-10-28 22:52:31,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104767712] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:52:31,008 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979833893] [2021-10-28 22:52:31,008 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 22:52:31,009 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:52:31,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:52:31,018 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:52:31,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2021-10-28 22:52:31,168 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 22:52:31,168 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 22:52:31,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 22:52:31,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:52:31,262 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:52:31,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [979833893] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:52:31,263 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 22:52:31,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2021-10-28 22:52:31,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063893604] [2021-10-28 22:52:31,263 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 22:52:31,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:52:31,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1798, now seen corresponding path program 9 times [2021-10-28 22:52:31,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:52:31,264 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240848655] [2021-10-28 22:52:31,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:52:31,265 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:52:31,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:52:31,271 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:52:31,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:52:31,277 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:52:31,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:52:31,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 22:52:31,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-10-28 22:52:31,309 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. cyclomatic complexity: 3 Second operand has 12 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:52:31,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:52:31,361 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2021-10-28 22:52:31,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 22:52:31,364 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 27 transitions. [2021-10-28 22:52:31,367 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-28 22:52:31,367 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 26 states and 27 transitions. [2021-10-28 22:52:31,368 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-10-28 22:52:31,368 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2021-10-28 22:52:31,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 27 transitions. [2021-10-28 22:52:31,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 22:52:31,368 INFO L681 BuchiCegarLoop]: Abstraction has 26 states and 27 transitions. [2021-10-28 22:52:31,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 27 transitions. [2021-10-28 22:52:31,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2021-10-28 22:52:31,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 25 states have (on average 1.04) internal successors, (26), 24 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:52:31,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2021-10-28 22:52:31,371 INFO L704 BuchiCegarLoop]: Abstraction has 25 states and 26 transitions. [2021-10-28 22:52:31,371 INFO L587 BuchiCegarLoop]: Abstraction has 25 states and 26 transitions. [2021-10-28 22:52:31,371 INFO L425 BuchiCegarLoop]: ======== Iteration 11============ [2021-10-28 22:52:31,371 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states and 26 transitions. [2021-10-28 22:52:31,372 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-28 22:52:31,372 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 22:52:31,372 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 22:52:31,373 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [9, 9, 1, 1, 1, 1, 1] [2021-10-28 22:52:31,373 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-28 22:52:31,373 INFO L791 eck$LassoCheckResult]: Stem: 924#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(11);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 925#L-1 havoc main_#res;havoc main_#t~nondet11, main_#t~nondet13, main_#t~post12, main_~j~0, main_#t~mem14.base, main_#t~mem14.offset, main_#t~mem15.base, main_#t~mem15.offset, main_#t~mem16.base, main_#t~mem16.offset, main_#t~mem17, main_#t~mem18.base, main_#t~mem18.offset, main_#t~mem19.base, main_#t~mem19.offset, main_#t~mem20, main_#t~pre22, main_#t~mem21, main_#t~ret23, main_~#cont~0.base, main_~#cont~0.offset, main_~#dummy~0.base, main_~#dummy~0.offset, main_~#dummies~0.base, main_~#dummies~0.offset, main_~#a~0.base, main_~#a~0.offset, main_~i~0, main_~pa~0.base, main_~pa~0.offset;call main_~#cont~0.base, main_~#cont~0.offset := #Ultimate.allocOnStack(4);call main_~#dummy~0.base, main_~#dummy~0.offset := #Ultimate.allocOnStack(4);call main_~#dummies~0.base, main_~#dummies~0.offset := #Ultimate.allocOnStack(40);call main_~#a~0.base, main_~#a~0.offset := #Ultimate.allocOnStack(40);havoc main_~i~0;havoc main_~pa~0.base, main_~pa~0.offset;main_~i~0 := main_#t~nondet11;havoc main_#t~nondet11;main_~j~0 := 0; 926#L29-3 assume !!(main_~j~0 < 10);call write~int(main_#t~nondet13, main_~#a~0.base, main_~#a~0.offset + 4 * main_~j~0, 4);havoc main_#t~nondet13;call write~$Pointer$(0, 0, main_~#dummies~0.base, main_~#dummies~0.offset + 4 * main_~j~0, 4); 927#L29-2 main_#t~post12 := main_~j~0;main_~j~0 := 1 + main_#t~post12;havoc main_#t~post12; 928#L29-3 assume !!(main_~j~0 < 10);call write~int(main_#t~nondet13, main_~#a~0.base, main_~#a~0.offset + 4 * main_~j~0, 4);havoc main_#t~nondet13;call write~$Pointer$(0, 0, main_~#dummies~0.base, main_~#dummies~0.offset + 4 * main_~j~0, 4); 929#L29-2 main_#t~post12 := main_~j~0;main_~j~0 := 1 + main_#t~post12;havoc main_#t~post12; 934#L29-3 assume !!(main_~j~0 < 10);call write~int(main_#t~nondet13, main_~#a~0.base, main_~#a~0.offset + 4 * main_~j~0, 4);havoc main_#t~nondet13;call write~$Pointer$(0, 0, main_~#dummies~0.base, main_~#dummies~0.offset + 4 * main_~j~0, 4); 948#L29-2 main_#t~post12 := main_~j~0;main_~j~0 := 1 + main_#t~post12;havoc main_#t~post12; 947#L29-3 assume !!(main_~j~0 < 10);call write~int(main_#t~nondet13, main_~#a~0.base, main_~#a~0.offset + 4 * main_~j~0, 4);havoc main_#t~nondet13;call write~$Pointer$(0, 0, main_~#dummies~0.base, main_~#dummies~0.offset + 4 * main_~j~0, 4); 946#L29-2 main_#t~post12 := main_~j~0;main_~j~0 := 1 + main_#t~post12;havoc main_#t~post12; 945#L29-3 assume !!(main_~j~0 < 10);call write~int(main_#t~nondet13, main_~#a~0.base, main_~#a~0.offset + 4 * main_~j~0, 4);havoc main_#t~nondet13;call write~$Pointer$(0, 0, main_~#dummies~0.base, main_~#dummies~0.offset + 4 * main_~j~0, 4); 944#L29-2 main_#t~post12 := main_~j~0;main_~j~0 := 1 + main_#t~post12;havoc main_#t~post12; 943#L29-3 assume !!(main_~j~0 < 10);call write~int(main_#t~nondet13, main_~#a~0.base, main_~#a~0.offset + 4 * main_~j~0, 4);havoc main_#t~nondet13;call write~$Pointer$(0, 0, main_~#dummies~0.base, main_~#dummies~0.offset + 4 * main_~j~0, 4); 942#L29-2 main_#t~post12 := main_~j~0;main_~j~0 := 1 + main_#t~post12;havoc main_#t~post12; 941#L29-3 assume !!(main_~j~0 < 10);call write~int(main_#t~nondet13, main_~#a~0.base, main_~#a~0.offset + 4 * main_~j~0, 4);havoc main_#t~nondet13;call write~$Pointer$(0, 0, main_~#dummies~0.base, main_~#dummies~0.offset + 4 * main_~j~0, 4); 940#L29-2 main_#t~post12 := main_~j~0;main_~j~0 := 1 + main_#t~post12;havoc main_#t~post12; 939#L29-3 assume !!(main_~j~0 < 10);call write~int(main_#t~nondet13, main_~#a~0.base, main_~#a~0.offset + 4 * main_~j~0, 4);havoc main_#t~nondet13;call write~$Pointer$(0, 0, main_~#dummies~0.base, main_~#dummies~0.offset + 4 * main_~j~0, 4); 938#L29-2 main_#t~post12 := main_~j~0;main_~j~0 := 1 + main_#t~post12;havoc main_#t~post12; 937#L29-3 assume !!(main_~j~0 < 10);call write~int(main_#t~nondet13, main_~#a~0.base, main_~#a~0.offset + 4 * main_~j~0, 4);havoc main_#t~nondet13;call write~$Pointer$(0, 0, main_~#dummies~0.base, main_~#dummies~0.offset + 4 * main_~j~0, 4); 936#L29-2 main_#t~post12 := main_~j~0;main_~j~0 := 1 + main_#t~post12;havoc main_#t~post12; 935#L29-3 assume !(main_~j~0 < 10); 930#L29-4 assume main_~i~0 >= 0 && main_~i~0 < 9;call write~int(main_~i~0, main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4);call write~$Pointer$(main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, main_~#dummy~0.base, main_~#dummy~0.offset, 4);call write~$Pointer$(main_~#dummy~0.base, main_~#dummy~0.offset, main_~#dummies~0.base, main_~#dummies~0.offset + 4 * (1 + main_~i~0), 4);call write~$Pointer$(main_~#dummies~0.base, main_~#dummies~0.offset, main_~#cont~0.base, main_~#cont~0.offset, 4);call main_#t~mem14.base, main_#t~mem14.offset := read~$Pointer$(main_~#cont~0.base, main_~#cont~0.offset, 4);call main_#t~mem15.base, main_#t~mem15.offset := read~$Pointer$(main_#t~mem14.base, main_#t~mem14.offset + 4 * main_~i~0, 4);call main_#t~mem16.base, main_#t~mem16.offset := read~$Pointer$(main_#t~mem15.base, main_#t~mem15.offset, 4);main_~pa~0.base, main_~pa~0.offset := main_#t~mem16.base, main_#t~mem16.offset + 4 * main_~i~0;havoc main_#t~mem14.base, main_#t~mem14.offset;havoc main_#t~mem15.base, main_#t~mem15.offset;havoc main_#t~mem16.base, main_#t~mem16.offset;call main_#t~mem17 := read~int(main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4); 931#L42 assume main_#t~mem17 > 0;havoc main_#t~mem17;call main_#t~mem18.base, main_#t~mem18.offset := read~$Pointer$(main_~#dummies~0.base, main_~#dummies~0.offset + 4 * (1 + main_~i~0), 4);call main_#t~mem19.base, main_#t~mem19.offset := read~$Pointer$(main_#t~mem18.base, main_#t~mem18.offset, 4);call main_#t~mem20 := read~int(main_#t~mem19.base, main_#t~mem19.offset + 4 * main_~i~0, 4);main_~i~0 := main_#t~mem20 - 10;havoc main_#t~mem18.base, main_#t~mem18.offset;havoc main_#t~mem19.base, main_#t~mem19.offset;havoc main_#t~mem20; 932#L44-3 [2021-10-28 22:52:31,374 INFO L793 eck$LassoCheckResult]: Loop: 932#L44-3 call main_#t~mem21 := read~int(main_~pa~0.base, main_~pa~0.offset, 4); 933#L44-1 assume !!(main_~i~0 < main_#t~mem21);havoc main_#t~mem21;main_#t~pre22 := 1 + main_~i~0;main_~i~0 := 1 + main_~i~0;havoc main_#t~pre22; 932#L44-3 [2021-10-28 22:52:31,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:52:31,374 INFO L85 PathProgramCache]: Analyzing trace with hash 899903958, now seen corresponding path program 9 times [2021-10-28 22:52:31,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:52:31,375 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254832818] [2021-10-28 22:52:31,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:52:31,375 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:52:31,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:52:31,525 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:52:31,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:52:31,525 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254832818] [2021-10-28 22:52:31,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254832818] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:52:31,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900440689] [2021-10-28 22:52:31,526 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 22:52:31,526 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:52:31,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:52:31,529 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:52:31,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2021-10-28 22:52:40,563 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-10-28 22:52:40,564 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 22:52:40,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 22:52:40,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:52:40,661 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:52:40,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900440689] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:52:40,662 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 22:52:40,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2021-10-28 22:52:40,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96484356] [2021-10-28 22:52:40,662 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 22:52:40,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:52:40,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1798, now seen corresponding path program 10 times [2021-10-28 22:52:40,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:52:40,663 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660024282] [2021-10-28 22:52:40,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:52:40,664 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:52:40,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:52:40,667 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:52:40,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:52:40,671 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:52:40,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:52:40,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-28 22:52:40,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-10-28 22:52:40,708 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. cyclomatic complexity: 3 Second operand has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:52:40,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:52:40,766 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2021-10-28 22:52:40,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 22:52:40,766 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 28 transitions. [2021-10-28 22:52:40,768 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-28 22:52:40,769 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 27 states and 28 transitions. [2021-10-28 22:52:40,769 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-10-28 22:52:40,769 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2021-10-28 22:52:40,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 28 transitions. [2021-10-28 22:52:40,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 22:52:40,769 INFO L681 BuchiCegarLoop]: Abstraction has 27 states and 28 transitions. [2021-10-28 22:52:40,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 28 transitions. [2021-10-28 22:52:40,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-10-28 22:52:40,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 27 states have (on average 1.037037037037037) internal successors, (28), 26 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:52:40,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2021-10-28 22:52:40,780 INFO L704 BuchiCegarLoop]: Abstraction has 27 states and 28 transitions. [2021-10-28 22:52:40,780 INFO L587 BuchiCegarLoop]: Abstraction has 27 states and 28 transitions. [2021-10-28 22:52:40,780 INFO L425 BuchiCegarLoop]: ======== Iteration 12============ [2021-10-28 22:52:40,780 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 28 transitions. [2021-10-28 22:52:40,781 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-28 22:52:40,781 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 22:52:40,781 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 22:52:40,783 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [10, 10, 1, 1, 1, 1, 1] [2021-10-28 22:52:40,783 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-28 22:52:40,783 INFO L791 eck$LassoCheckResult]: Stem: 1058#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(11);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 1059#L-1 havoc main_#res;havoc main_#t~nondet11, main_#t~nondet13, main_#t~post12, main_~j~0, main_#t~mem14.base, main_#t~mem14.offset, main_#t~mem15.base, main_#t~mem15.offset, main_#t~mem16.base, main_#t~mem16.offset, main_#t~mem17, main_#t~mem18.base, main_#t~mem18.offset, main_#t~mem19.base, main_#t~mem19.offset, main_#t~mem20, main_#t~pre22, main_#t~mem21, main_#t~ret23, main_~#cont~0.base, main_~#cont~0.offset, main_~#dummy~0.base, main_~#dummy~0.offset, main_~#dummies~0.base, main_~#dummies~0.offset, main_~#a~0.base, main_~#a~0.offset, main_~i~0, main_~pa~0.base, main_~pa~0.offset;call main_~#cont~0.base, main_~#cont~0.offset := #Ultimate.allocOnStack(4);call main_~#dummy~0.base, main_~#dummy~0.offset := #Ultimate.allocOnStack(4);call main_~#dummies~0.base, main_~#dummies~0.offset := #Ultimate.allocOnStack(40);call main_~#a~0.base, main_~#a~0.offset := #Ultimate.allocOnStack(40);havoc main_~i~0;havoc main_~pa~0.base, main_~pa~0.offset;main_~i~0 := main_#t~nondet11;havoc main_#t~nondet11;main_~j~0 := 0; 1060#L29-3 assume !!(main_~j~0 < 10);call write~int(main_#t~nondet13, main_~#a~0.base, main_~#a~0.offset + 4 * main_~j~0, 4);havoc main_#t~nondet13;call write~$Pointer$(0, 0, main_~#dummies~0.base, main_~#dummies~0.offset + 4 * main_~j~0, 4); 1061#L29-2 main_#t~post12 := main_~j~0;main_~j~0 := 1 + main_#t~post12;havoc main_#t~post12; 1062#L29-3 assume !!(main_~j~0 < 10);call write~int(main_#t~nondet13, main_~#a~0.base, main_~#a~0.offset + 4 * main_~j~0, 4);havoc main_#t~nondet13;call write~$Pointer$(0, 0, main_~#dummies~0.base, main_~#dummies~0.offset + 4 * main_~j~0, 4); 1063#L29-2 main_#t~post12 := main_~j~0;main_~j~0 := 1 + main_#t~post12;havoc main_#t~post12; 1068#L29-3 assume !!(main_~j~0 < 10);call write~int(main_#t~nondet13, main_~#a~0.base, main_~#a~0.offset + 4 * main_~j~0, 4);havoc main_#t~nondet13;call write~$Pointer$(0, 0, main_~#dummies~0.base, main_~#dummies~0.offset + 4 * main_~j~0, 4); 1084#L29-2 main_#t~post12 := main_~j~0;main_~j~0 := 1 + main_#t~post12;havoc main_#t~post12; 1083#L29-3 assume !!(main_~j~0 < 10);call write~int(main_#t~nondet13, main_~#a~0.base, main_~#a~0.offset + 4 * main_~j~0, 4);havoc main_#t~nondet13;call write~$Pointer$(0, 0, main_~#dummies~0.base, main_~#dummies~0.offset + 4 * main_~j~0, 4); 1082#L29-2 main_#t~post12 := main_~j~0;main_~j~0 := 1 + main_#t~post12;havoc main_#t~post12; 1081#L29-3 assume !!(main_~j~0 < 10);call write~int(main_#t~nondet13, main_~#a~0.base, main_~#a~0.offset + 4 * main_~j~0, 4);havoc main_#t~nondet13;call write~$Pointer$(0, 0, main_~#dummies~0.base, main_~#dummies~0.offset + 4 * main_~j~0, 4); 1080#L29-2 main_#t~post12 := main_~j~0;main_~j~0 := 1 + main_#t~post12;havoc main_#t~post12; 1079#L29-3 assume !!(main_~j~0 < 10);call write~int(main_#t~nondet13, main_~#a~0.base, main_~#a~0.offset + 4 * main_~j~0, 4);havoc main_#t~nondet13;call write~$Pointer$(0, 0, main_~#dummies~0.base, main_~#dummies~0.offset + 4 * main_~j~0, 4); 1078#L29-2 main_#t~post12 := main_~j~0;main_~j~0 := 1 + main_#t~post12;havoc main_#t~post12; 1077#L29-3 assume !!(main_~j~0 < 10);call write~int(main_#t~nondet13, main_~#a~0.base, main_~#a~0.offset + 4 * main_~j~0, 4);havoc main_#t~nondet13;call write~$Pointer$(0, 0, main_~#dummies~0.base, main_~#dummies~0.offset + 4 * main_~j~0, 4); 1076#L29-2 main_#t~post12 := main_~j~0;main_~j~0 := 1 + main_#t~post12;havoc main_#t~post12; 1075#L29-3 assume !!(main_~j~0 < 10);call write~int(main_#t~nondet13, main_~#a~0.base, main_~#a~0.offset + 4 * main_~j~0, 4);havoc main_#t~nondet13;call write~$Pointer$(0, 0, main_~#dummies~0.base, main_~#dummies~0.offset + 4 * main_~j~0, 4); 1074#L29-2 main_#t~post12 := main_~j~0;main_~j~0 := 1 + main_#t~post12;havoc main_#t~post12; 1073#L29-3 assume !!(main_~j~0 < 10);call write~int(main_#t~nondet13, main_~#a~0.base, main_~#a~0.offset + 4 * main_~j~0, 4);havoc main_#t~nondet13;call write~$Pointer$(0, 0, main_~#dummies~0.base, main_~#dummies~0.offset + 4 * main_~j~0, 4); 1072#L29-2 main_#t~post12 := main_~j~0;main_~j~0 := 1 + main_#t~post12;havoc main_#t~post12; 1071#L29-3 assume !!(main_~j~0 < 10);call write~int(main_#t~nondet13, main_~#a~0.base, main_~#a~0.offset + 4 * main_~j~0, 4);havoc main_#t~nondet13;call write~$Pointer$(0, 0, main_~#dummies~0.base, main_~#dummies~0.offset + 4 * main_~j~0, 4); 1070#L29-2 main_#t~post12 := main_~j~0;main_~j~0 := 1 + main_#t~post12;havoc main_#t~post12; 1069#L29-3 assume !(main_~j~0 < 10); 1064#L29-4 assume main_~i~0 >= 0 && main_~i~0 < 9;call write~int(main_~i~0, main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4);call write~$Pointer$(main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, main_~#dummy~0.base, main_~#dummy~0.offset, 4);call write~$Pointer$(main_~#dummy~0.base, main_~#dummy~0.offset, main_~#dummies~0.base, main_~#dummies~0.offset + 4 * (1 + main_~i~0), 4);call write~$Pointer$(main_~#dummies~0.base, main_~#dummies~0.offset, main_~#cont~0.base, main_~#cont~0.offset, 4);call main_#t~mem14.base, main_#t~mem14.offset := read~$Pointer$(main_~#cont~0.base, main_~#cont~0.offset, 4);call main_#t~mem15.base, main_#t~mem15.offset := read~$Pointer$(main_#t~mem14.base, main_#t~mem14.offset + 4 * main_~i~0, 4);call main_#t~mem16.base, main_#t~mem16.offset := read~$Pointer$(main_#t~mem15.base, main_#t~mem15.offset, 4);main_~pa~0.base, main_~pa~0.offset := main_#t~mem16.base, main_#t~mem16.offset + 4 * main_~i~0;havoc main_#t~mem14.base, main_#t~mem14.offset;havoc main_#t~mem15.base, main_#t~mem15.offset;havoc main_#t~mem16.base, main_#t~mem16.offset;call main_#t~mem17 := read~int(main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4); 1065#L42 assume main_#t~mem17 > 0;havoc main_#t~mem17;call main_#t~mem18.base, main_#t~mem18.offset := read~$Pointer$(main_~#dummies~0.base, main_~#dummies~0.offset + 4 * (1 + main_~i~0), 4);call main_#t~mem19.base, main_#t~mem19.offset := read~$Pointer$(main_#t~mem18.base, main_#t~mem18.offset, 4);call main_#t~mem20 := read~int(main_#t~mem19.base, main_#t~mem19.offset + 4 * main_~i~0, 4);main_~i~0 := main_#t~mem20 - 10;havoc main_#t~mem18.base, main_#t~mem18.offset;havoc main_#t~mem19.base, main_#t~mem19.offset;havoc main_#t~mem20; 1066#L44-3 [2021-10-28 22:52:40,783 INFO L793 eck$LassoCheckResult]: Loop: 1066#L44-3 call main_#t~mem21 := read~int(main_~pa~0.base, main_~pa~0.offset, 4); 1067#L44-1 assume !!(main_~i~0 < main_#t~mem21);havoc main_#t~mem21;main_#t~pre22 := 1 + main_~i~0;main_~i~0 := 1 + main_~i~0;havoc main_#t~pre22; 1066#L44-3 [2021-10-28 22:52:40,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:52:40,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1520933524, now seen corresponding path program 10 times [2021-10-28 22:52:40,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:52:40,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699803465] [2021-10-28 22:52:40,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:52:40,785 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:52:41,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:52:47,839 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 12 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:52:47,840 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:52:47,840 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699803465] [2021-10-28 22:52:47,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699803465] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:52:47,840 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232017517] [2021-10-28 22:52:47,841 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-28 22:52:47,841 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:52:47,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:52:47,845 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:52:47,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2021-10-28 22:56:19,374 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-28 22:56:19,374 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 22:56:19,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 72 conjunts are in the unsatisfiable core [2021-10-28 22:56:19,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:56:19,519 INFO L354 Elim1Store]: treesize reduction 93, result has 14.7 percent of original size [2021-10-28 22:56:19,520 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 33 [2021-10-28 22:56:19,763 INFO L354 Elim1Store]: treesize reduction 208, result has 13.7 percent of original size [2021-10-28 22:56:19,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 65 treesize of output 82 [2021-10-28 22:56:19,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 21 [2021-10-28 22:56:20,030 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-10-28 22:56:20,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:20,350 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 33 [2021-10-28 22:56:20,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:20,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:20,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:20,718 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 45 [2021-10-28 22:56:21,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:21,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:21,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:21,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:21,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:21,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:21,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 60 [2021-10-28 22:56:21,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:21,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:21,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:21,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:21,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:21,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:21,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:21,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:21,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:21,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:21,486 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 75 [2021-10-28 22:56:21,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:21,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:21,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:21,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:21,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:21,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:21,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:21,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:21,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:21,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:21,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:21,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:21,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:21,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:21,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:21,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 16 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 81 [2021-10-28 22:56:22,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:22,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:22,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:22,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:22,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:22,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:22,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:22,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:22,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:22,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:22,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:22,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:22,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:22,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:22,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:22,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:22,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:22,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:22,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:22,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:22,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:22,257 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 22 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 93 [2021-10-28 22:56:22,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:22,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:22,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:22,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:22,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:22,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:22,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:22,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:22,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:22,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:22,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:22,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:22,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:22,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:22,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:22,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:22,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:22,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:22,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:22,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:22,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:22,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:22,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:22,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:22,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:22,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:22,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:22,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:22,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 29 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 105 [2021-10-28 22:56:23,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:23,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:23,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:23,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:23,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:23,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:23,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:23,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:23,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:23,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:23,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:23,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:23,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:23,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:23,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:23,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:23,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:23,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:23,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:23,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:23,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:23,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:23,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:23,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:23,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:23,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:23,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:23,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:23,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:23,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:23,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:23,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:23,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:23,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:23,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:23,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:23,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 37 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 110 treesize of output 117 [2021-10-28 22:56:23,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:23,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:23,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:23,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:23,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:23,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:23,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:23,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:23,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:23,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:23,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:23,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:23,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:23,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:23,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:23,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:23,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:23,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:23,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:23,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:23,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:23,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:23,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:23,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:23,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:23,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:23,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:23,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:23,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:23,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:23,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:23,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:23,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:23,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:23,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:23,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:23,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:23,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:23,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:23,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:23,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:23,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:23,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:23,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:23,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:23,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 46 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 132 [2021-10-28 22:56:24,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:24,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:24,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:24,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:24,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:24,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:24,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:24,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:24,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:24,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:24,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:24,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:24,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:24,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:24,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:24,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:24,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:24,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:24,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:24,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:24,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:24,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:24,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:24,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:24,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:24,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:24,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:24,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:24,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:24,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:24,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:24,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:24,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:24,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:24,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:24,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:24,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:24,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:24,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:24,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:24,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:24,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:24,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:24,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:24,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:24,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:24,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:24,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:24,800 INFO L354 Elim1Store]: treesize reduction 1932, result has 0.1 percent of original size [2021-10-28 22:56:24,801 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 48 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 13 case distinctions, treesize of input 390 treesize of output 1 [2021-10-28 22:56:24,806 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:56:24,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [232017517] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:56:24,807 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 22:56:24,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 24] total 41 [2021-10-28 22:56:24,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675293743] [2021-10-28 22:56:24,807 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 22:56:24,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:56:24,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1798, now seen corresponding path program 11 times [2021-10-28 22:56:24,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:56:24,808 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939401807] [2021-10-28 22:56:24,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:56:24,808 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:56:24,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:56:24,814 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:56:24,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:56:24,818 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:56:24,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:56:24,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-10-28 22:56:24,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=1498, Unknown=0, NotChecked=0, Total=1722 [2021-10-28 22:56:24,849 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. cyclomatic complexity: 3 Second operand has 42 states, 42 states have (on average 1.1904761904761905) internal successors, (50), 41 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:56:26,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:56:26,569 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2021-10-28 22:56:26,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-28 22:56:26,570 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 27 transitions. [2021-10-28 22:56:26,571 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-28 22:56:26,571 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 0 states and 0 transitions. [2021-10-28 22:56:26,571 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-28 22:56:26,571 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-28 22:56:26,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-28 22:56:26,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 22:56:26,571 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 22:56:26,571 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 22:56:26,571 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 22:56:26,571 INFO L425 BuchiCegarLoop]: ======== Iteration 13============ [2021-10-28 22:56:26,572 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-10-28 22:56:26,572 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-28 22:56:26,572 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-10-28 22:56:26,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.10 10:56:26 BoogieIcfgContainer [2021-10-28 22:56:26,578 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-28 22:56:26,578 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 22:56:26,578 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 22:56:26,579 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 22:56:26,579 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:52:20" (3/4) ... [2021-10-28 22:56:26,582 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 22:56:26,582 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 22:56:26,583 INFO L168 Benchmark]: Toolchain (without parser) took 247244.91 ms. Allocated memory was 104.9 MB in the beginning and 201.3 MB in the end (delta: 96.5 MB). Free memory was 61.1 MB in the beginning and 100.0 MB in the end (delta: -38.9 MB). Peak memory consumption was 55.6 MB. Max. memory is 16.1 GB. [2021-10-28 22:56:26,583 INFO L168 Benchmark]: CDTParser took 0.39 ms. Allocated memory is still 104.9 MB. Free memory is still 77.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 22:56:26,584 INFO L168 Benchmark]: CACSL2BoogieTranslator took 351.11 ms. Allocated memory is still 104.9 MB. Free memory was 60.9 MB in the beginning and 79.6 MB in the end (delta: -18.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-28 22:56:26,584 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.44 ms. Allocated memory is still 104.9 MB. Free memory was 79.6 MB in the beginning and 77.8 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 22:56:26,584 INFO L168 Benchmark]: Boogie Preprocessor took 42.19 ms. Allocated memory is still 104.9 MB. Free memory was 77.8 MB in the beginning and 76.4 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 22:56:26,585 INFO L168 Benchmark]: RCFGBuilder took 514.61 ms. Allocated memory is still 104.9 MB. Free memory was 76.4 MB in the beginning and 60.5 MB in the end (delta: 15.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-28 22:56:26,585 INFO L168 Benchmark]: BuchiAutomizer took 246276.26 ms. Allocated memory was 104.9 MB in the beginning and 201.3 MB in the end (delta: 96.5 MB). Free memory was 60.2 MB in the beginning and 101.0 MB in the end (delta: -40.8 MB). Peak memory consumption was 57.5 MB. Max. memory is 16.1 GB. [2021-10-28 22:56:26,586 INFO L168 Benchmark]: Witness Printer took 4.06 ms. Allocated memory is still 201.3 MB. Free memory was 101.0 MB in the beginning and 100.0 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 22:56:26,587 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39 ms. Allocated memory is still 104.9 MB. Free memory is still 77.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 351.11 ms. Allocated memory is still 104.9 MB. Free memory was 60.9 MB in the beginning and 79.6 MB in the end (delta: -18.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 50.44 ms. Allocated memory is still 104.9 MB. Free memory was 79.6 MB in the beginning and 77.8 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 42.19 ms. Allocated memory is still 104.9 MB. Free memory was 77.8 MB in the beginning and 76.4 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 514.61 ms. Allocated memory is still 104.9 MB. Free memory was 76.4 MB in the beginning and 60.5 MB in the end (delta: 15.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 246276.26 ms. Allocated memory was 104.9 MB in the beginning and 201.3 MB in the end (delta: 96.5 MB). Free memory was 60.2 MB in the beginning and 101.0 MB in the end (delta: -40.8 MB). Peak memory consumption was 57.5 MB. Max. memory is 16.1 GB. * Witness Printer took 4.06 ms. Allocated memory is still 201.3 MB. Free memory was 101.0 MB in the beginning and 100.0 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 12 terminating modules (11 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function 19 * unknown-#length-unknown[a] + -8 * j and consists of 5 locations. 11 modules have a trivial ranking function, the largest among these consists of 42 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 246.2s and 13 iterations. TraceHistogramMax:10. Analysis of lassos took 243.5s. Construction of modules took 1.3s. Büchi inclusion checks took 1.0s. Highest rank in rank-based complementation 3. Minimization of det autom 12. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 9 StatesRemovedByMinimization, 9 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 27 states and ocurred in iteration 11. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 80 SDtfs, 80 SDslu, 144 SDs, 0 SdLazy, 622 SolverSat, 75 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU11 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital419 mio100 ax100 hnf100 lsp95 ukn34 mio100 lsp41 div100 bol100 ite100 ukn100 eq165 hnf91 smp100 dnf100 smp100 tf100 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 37ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-10-28 22:56:26,671 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2021-10-28 22:56:26,858 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2021-10-28 22:56:27,056 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2021-10-28 22:56:27,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2021-10-28 22:56:27,456 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2021-10-28 22:56:27,654 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2021-10-28 22:56:27,837 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2021-10-28 22:56:28,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2021-10-28 22:56:28,254 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2021-10-28 22:56:28,454 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2021-10-28 22:56:28,656 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8142f156-8851-4f63-a803-ef92147113b1/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...