./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/reducercommutativity/sum10-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/reducercommutativity/sum10-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be --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 f341d659968a9193c951bd8eec2bcf2a384f8494a1f57cb579da98ce5ebdb030 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 19:12:05,744 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:12:05,746 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:12:05,777 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:12:05,778 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:12:05,779 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:12:05,781 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:12:05,783 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:12:05,786 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:12:05,787 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:12:05,788 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:12:05,790 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:12:05,790 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:12:05,792 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:12:05,793 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:12:05,795 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:12:05,796 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:12:05,797 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:12:05,799 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:12:05,802 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:12:05,804 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:12:05,806 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:12:05,808 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:12:05,809 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:12:05,813 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:12:05,813 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:12:05,814 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:12:05,815 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:12:05,816 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:12:05,817 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:12:05,817 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:12:05,818 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:12:05,819 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:12:05,820 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:12:05,822 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:12:05,822 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:12:05,823 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:12:05,824 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:12:05,824 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:12:05,825 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:12:05,826 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:12:05,827 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-21 19:12:05,852 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:12:05,853 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:12:05,853 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:12:05,853 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:12:05,854 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:12:05,855 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:12:05,855 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:12:05,855 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-21 19:12:05,855 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-21 19:12:05,856 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-21 19:12:05,856 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-21 19:12:05,856 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-21 19:12:05,856 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-21 19:12:05,857 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:12:05,857 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:12:05,857 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 19:12:05,857 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:12:05,858 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:12:05,858 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:12:05,858 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-21 19:12:05,858 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-21 19:12:05,859 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-21 19:12:05,859 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:12:05,859 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:12:05,859 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-21 19:12:05,860 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:12:05,860 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-21 19:12:05,860 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:12:05,860 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:12:05,861 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:12:05,861 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:12:05,861 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:12:05,862 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-21 19:12:05,862 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_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f341d659968a9193c951bd8eec2bcf2a384f8494a1f57cb579da98ce5ebdb030 [2021-10-21 19:12:06,104 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:12:06,127 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:12:06,131 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:12:06,133 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:12:06,134 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:12:06,135 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/reducercommutativity/sum10-1.i [2021-10-21 19:12:06,206 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/data/dfb766a0e/20fa7527faad4fcaabbfc01cbcaf8aae/FLAG665ec5781 [2021-10-21 19:12:06,666 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:12:06,667 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/sv-benchmarks/c/reducercommutativity/sum10-1.i [2021-10-21 19:12:06,673 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/data/dfb766a0e/20fa7527faad4fcaabbfc01cbcaf8aae/FLAG665ec5781 [2021-10-21 19:12:07,048 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/data/dfb766a0e/20fa7527faad4fcaabbfc01cbcaf8aae [2021-10-21 19:12:07,050 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:12:07,052 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:12:07,054 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:12:07,054 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:12:07,057 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:12:07,058 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:12:07" (1/1) ... [2021-10-21 19:12:07,060 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26d801d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:12:07, skipping insertion in model container [2021-10-21 19:12:07,060 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:12:07" (1/1) ... [2021-10-21 19:12:07,068 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:12:07,084 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:12:07,273 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_660a81d9-f216-495a-9a30-2cebbfbbbb1d/sv-benchmarks/c/reducercommutativity/sum10-1.i[1277,1290] [2021-10-21 19:12:07,274 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:12:07,282 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:12:07,304 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_660a81d9-f216-495a-9a30-2cebbfbbbb1d/sv-benchmarks/c/reducercommutativity/sum10-1.i[1277,1290] [2021-10-21 19:12:07,305 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:12:07,321 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:12:07,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:12:07 WrapperNode [2021-10-21 19:12:07,322 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:12:07,323 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:12:07,323 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:12:07,324 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:12:07,332 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:12:07" (1/1) ... [2021-10-21 19:12:07,341 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:12:07" (1/1) ... [2021-10-21 19:12:07,368 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:12:07,369 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:12:07,369 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:12:07,369 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:12:07,379 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:12:07" (1/1) ... [2021-10-21 19:12:07,379 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:12:07" (1/1) ... [2021-10-21 19:12:07,385 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:12:07" (1/1) ... [2021-10-21 19:12:07,385 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:12:07" (1/1) ... [2021-10-21 19:12:07,395 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:12:07" (1/1) ... [2021-10-21 19:12:07,400 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:12:07" (1/1) ... [2021-10-21 19:12:07,402 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:12:07" (1/1) ... [2021-10-21 19:12:07,405 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:12:07,406 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:12:07,406 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:12:07,406 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:12:07,407 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:12:07" (1/1) ... [2021-10-21 19:12:07,427 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:12:07,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:12:07,457 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:12:07,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-21 19:12:07,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 19:12:07,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:12:07,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-21 19:12:07,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:12:07,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:12:07,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-21 19:12:07,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-21 19:12:07,871 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:12:07,871 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2021-10-21 19:12:07,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:12:07 BoogieIcfgContainer [2021-10-21 19:12:07,874 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:12:07,875 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-21 19:12:07,875 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-21 19:12:07,879 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-21 19:12:07,880 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:12:07,880 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.10 07:12:07" (1/3) ... [2021-10-21 19:12:07,882 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2c0bd840 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 07:12:07, skipping insertion in model container [2021-10-21 19:12:07,882 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:12:07,882 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:12:07" (2/3) ... [2021-10-21 19:12:07,883 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2c0bd840 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 07:12:07, skipping insertion in model container [2021-10-21 19:12:07,883 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:12:07,883 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:12:07" (3/3) ... [2021-10-21 19:12:07,885 INFO L389 chiAutomizerObserver]: Analyzing ICFG sum10-1.i [2021-10-21 19:12:07,938 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-21 19:12:07,939 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-21 19:12:07,939 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-21 19:12:07,939 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-21 19:12:07,939 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-21 19:12:07,939 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-21 19:12:07,939 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-21 19:12:07,940 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-21 19:12:07,958 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 25 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 24 states have internal predecessors, (35), 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) [2021-10-21 19:12:08,002 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 10 [2021-10-21 19:12:08,002 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:12:08,002 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:12:08,018 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-21 19:12:08,019 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-21 19:12:08,019 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-21 19:12:08,019 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 25 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 24 states have internal predecessors, (35), 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) [2021-10-21 19:12:08,022 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 10 [2021-10-21 19:12:08,023 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:12:08,023 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:12:08,023 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-21 19:12:08,023 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-21 19:12:08,029 INFO L791 eck$LassoCheckResult]: Stem: 16#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(10); 8#L-1true havoc main_#res;havoc main_#t~nondet6, main_#t~post5, main_~i~1, main_#t~ret7, main_#t~mem8, main_#t~mem9, main_#t~ret10, main_#t~mem11, main_#t~mem13, main_#t~post12, main_~i~2, main_#t~ret14, main_~#x~0.base, main_~#x~0.offset, main_~temp~0, main_~ret~1, main_~ret2~0, main_~ret5~0;call main_~#x~0.base, main_~#x~0.offset := #Ultimate.allocOnStack(40);havoc main_~temp~0;havoc main_~ret~1;havoc main_~ret2~0;havoc main_~ret5~0;main_~i~1 := 0; 15#L34-3true [2021-10-21 19:12:08,030 INFO L793 eck$LassoCheckResult]: Loop: 15#L34-3true assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 11#L34-2true main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 15#L34-3true [2021-10-21 19:12:08,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:12:08,037 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-10-21 19:12:08,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:12:08,049 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155657944] [2021-10-21 19:12:08,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:12:08,051 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:12:08,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:12:08,182 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:12:08,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:12:08,227 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:12:08,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:12:08,231 INFO L82 PathProgramCache]: Analyzing trace with hash 1283, now seen corresponding path program 1 times [2021-10-21 19:12:08,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:12:08,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428656577] [2021-10-21 19:12:08,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:12:08,232 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:12:08,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:12:08,244 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:12:08,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:12:08,272 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:12:08,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:12:08,274 INFO L82 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2021-10-21 19:12:08,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:12:08,275 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830423612] [2021-10-21 19:12:08,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:12:08,276 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:12:08,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:12:08,324 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:12:08,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:12:08,367 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:12:08,908 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:12:08,909 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:12:08,909 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:12:08,909 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:12:08,910 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-21 19:12:08,910 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:12:08,910 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:12:08,910 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:12:08,910 INFO L133 ssoRankerPreferences]: Filename of dumped script: sum10-1.i_Iteration1_Lasso [2021-10-21 19:12:08,911 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:12:08,911 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:12:08,936 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:12:08,942 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:12:08,945 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:12:08,948 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:12:08,953 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:12:08,956 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:12:08,959 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:12:08,963 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:12:08,967 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:12:08,971 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:12:09,203 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:12:09,208 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:12:09,211 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:12:09,215 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:12:09,218 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:12:09,221 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:12:09,225 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:12:09,228 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:12:09,231 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:12:09,593 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:12:09,599 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-21 19:12:09,601 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:12:09,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:12:09,607 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:12:09,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-10-21 19:12:09,612 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 [2021-10-21 19:12:09,623 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:12:09,624 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:12:09,624 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:12:09,625 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:12:09,625 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:12:09,629 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:12:09,629 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:12:09,649 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:12:09,687 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2021-10-21 19:12:09,687 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:12:09,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:12:09,690 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:12:09,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-10-21 19:12:09,693 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 [2021-10-21 19:12:09,703 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:12:09,703 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:12:09,704 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:12:09,704 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:12:09,704 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:12:09,705 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:12:09,705 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:12:09,717 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:12:09,742 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2021-10-21 19:12:09,742 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:12:09,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:12:09,744 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:12:09,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-21 19:12:09,749 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 [2021-10-21 19:12:09,758 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:12:09,758 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:12:09,759 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:12:09,759 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:12:09,759 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:12:09,760 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:12:09,760 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:12:09,769 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:12:09,814 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-10-21 19:12:09,815 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:12:09,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:12:09,822 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:12:09,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-21 19:12:09,834 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 [2021-10-21 19:12:09,846 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:12:09,847 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:12:09,847 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:12:09,847 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:12:09,854 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-21 19:12:09,854 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-21 19:12:09,873 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:12:09,919 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-10-21 19:12:09,920 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:12:09,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:12:09,922 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:12:09,929 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 [2021-10-21 19:12:09,940 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:12:09,940 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:12:09,940 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:12:09,940 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:12:09,940 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:12:09,942 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:12:09,942 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:12:09,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-10-21 19:12:09,961 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:12:10,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-10-21 19:12:10,007 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:12:10,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:12:10,009 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:12:10,016 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 [2021-10-21 19:12:10,027 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:12:10,028 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:12:10,028 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:12:10,028 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:12:10,028 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:12:10,029 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:12:10,029 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:12:10,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-10-21 19:12:10,049 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:12:10,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-10-21 19:12:10,095 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:12:10,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:12:10,097 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:12:10,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-10-21 19:12:10,109 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 [2021-10-21 19:12:10,121 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:12:10,121 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:12:10,122 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:12:10,122 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:12:10,122 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:12:10,123 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:12:10,123 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:12:10,141 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:12:10,167 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2021-10-21 19:12:10,168 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:12:10,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:12:10,171 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:12:10,195 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 [2021-10-21 19:12:10,206 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:12:10,207 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:12:10,207 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:12:10,207 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:12:10,211 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-21 19:12:10,211 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-21 19:12:10,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-10-21 19:12:10,237 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:12:10,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-10-21 19:12:10,282 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:12:10,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:12:10,286 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:12:10,293 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 [2021-10-21 19:12:10,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-10-21 19:12:10,304 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:12:10,304 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:12:10,305 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:12:10,305 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:12:10,308 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-21 19:12:10,309 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-21 19:12:10,337 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:12:10,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-10-21 19:12:10,376 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:12:10,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:12:10,377 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:12:10,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-10-21 19:12:10,383 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 [2021-10-21 19:12:10,392 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:12:10,392 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:12:10,392 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:12:10,392 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:12:10,396 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-21 19:12:10,396 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-21 19:12:10,410 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:12:10,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-10-21 19:12:10,441 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:12:10,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:12:10,443 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:12:10,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-10-21 19:12:10,449 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 [2021-10-21 19:12:10,459 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:12:10,459 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:12:10,459 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:12:10,459 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:12:10,459 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:12:10,461 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:12:10,462 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:12:10,467 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:12:10,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-10-21 19:12:10,497 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:12:10,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:12:10,498 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:12:10,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-10-21 19:12:10,500 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 [2021-10-21 19:12:10,508 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:12:10,509 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:12:10,509 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:12:10,509 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:12:10,512 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-21 19:12:10,513 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-21 19:12:10,549 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:12:10,595 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-10-21 19:12:10,595 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:12:10,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:12:10,597 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:12:10,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-10-21 19:12:10,610 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 [2021-10-21 19:12:10,622 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:12:10,622 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:12:10,622 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:12:10,622 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:12:10,626 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-21 19:12:10,626 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-21 19:12:10,645 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:12:10,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-10-21 19:12:10,691 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:12:10,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:12:10,692 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:12:10,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-10-21 19:12:10,696 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 [2021-10-21 19:12:10,705 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:12:10,706 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:12:10,706 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:12:10,706 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:12:10,711 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-21 19:12:10,711 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-21 19:12:10,735 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:12:10,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-10-21 19:12:10,759 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:12:10,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:12:10,761 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:12:10,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-10-21 19:12:10,763 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 [2021-10-21 19:12:10,772 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:12:10,772 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:12:10,772 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:12:10,773 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:12:10,779 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-21 19:12:10,779 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-21 19:12:10,798 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-21 19:12:10,850 INFO L443 ModelExtractionUtils]: Simplification made 12 calls to the SMT solver. [2021-10-21 19:12:10,851 INFO L444 ModelExtractionUtils]: 0 out of 13 variables were initially zero. Simplification set additionally 10 variables to zero. [2021-10-21 19:12:10,853 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:12:10,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:12:10,865 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:12:11,082 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-21 19:12:11,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-10-21 19:12:11,117 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2021-10-21 19:12:11,117 INFO L513 LassoAnalysis]: Proved termination. [2021-10-21 19:12:11,118 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~1, v_rep(select #length ULTIMATE.start_main_~#x~0.base)_1) = -8*ULTIMATE.start_main_~i~1 + 19*v_rep(select #length ULTIMATE.start_main_~#x~0.base)_1 Supporting invariants [] [2021-10-21 19:12:11,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-10-21 19:12:11,171 INFO L297 tatePredicateManager]: 7 out of 7 supporting invariants were superfluous and have been removed [2021-10-21 19:12:11,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:12:11,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:12:11,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 19:12:11,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:12:11,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:12:11,244 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-21 19:12:11,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:12:11,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:12:11,342 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 [2021-10-21 19:12:11,343 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 25 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 24 states have internal predecessors, (35), 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) [2021-10-21 19:12:11,496 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 25 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 24 states have internal predecessors, (35), 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 66 states and 92 transitions. Complement of second has 8 states. [2021-10-21 19:12:11,496 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 [2021-10-21 19:12:11,498 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) [2021-10-21 19:12:11,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 61 transitions. [2021-10-21 19:12:11,501 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 61 transitions. Stem has 2 letters. Loop has 2 letters. [2021-10-21 19:12:11,502 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:12:11,502 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 61 transitions. Stem has 4 letters. Loop has 2 letters. [2021-10-21 19:12:11,502 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:12:11,502 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 61 transitions. Stem has 2 letters. Loop has 4 letters. [2021-10-21 19:12:11,503 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:12:11,504 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 66 states and 92 transitions. [2021-10-21 19:12:11,510 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 8 [2021-10-21 19:12:11,515 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 66 states to 19 states and 24 transitions. [2021-10-21 19:12:11,516 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2021-10-21 19:12:11,516 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2021-10-21 19:12:11,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 24 transitions. [2021-10-21 19:12:11,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:12:11,518 INFO L681 BuchiCegarLoop]: Abstraction has 19 states and 24 transitions. [2021-10-21 19:12:11,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 24 transitions. [2021-10-21 19:12:11,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-10-21 19:12:11,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 19 states have (on average 1.263157894736842) internal successors, (24), 18 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) [2021-10-21 19:12:11,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2021-10-21 19:12:11,556 INFO L704 BuchiCegarLoop]: Abstraction has 19 states and 24 transitions. [2021-10-21 19:12:11,556 INFO L587 BuchiCegarLoop]: Abstraction has 19 states and 24 transitions. [2021-10-21 19:12:11,557 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-21 19:12:11,557 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 24 transitions. [2021-10-21 19:12:11,560 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 8 [2021-10-21 19:12:11,561 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:12:11,561 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:12:11,561 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-10-21 19:12:11,562 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-21 19:12:11,563 INFO L791 eck$LassoCheckResult]: Stem: 159#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(10); 160#L-1 havoc main_#res;havoc main_#t~nondet6, main_#t~post5, main_~i~1, main_#t~ret7, main_#t~mem8, main_#t~mem9, main_#t~ret10, main_#t~mem11, main_#t~mem13, main_#t~post12, main_~i~2, main_#t~ret14, main_~#x~0.base, main_~#x~0.offset, main_~temp~0, main_~ret~1, main_~ret2~0, main_~ret5~0;call main_~#x~0.base, main_~#x~0.offset := #Ultimate.allocOnStack(40);havoc main_~temp~0;havoc main_~ret~1;havoc main_~ret2~0;havoc main_~ret5~0;main_~i~1 := 0; 171#L34-3 assume !(main_~i~1 < 10); 163#L34-4 sum_#in~x.base, sum_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc sum_#res;havoc sum_#t~mem4, sum_#t~post3, sum_~x.base, sum_~x.offset, sum_~i~0, sum_~ret~0;sum_~x.base, sum_~x.offset := sum_#in~x.base, sum_#in~x.offset;havoc sum_~i~0;havoc sum_~ret~0;sum_~ret~0 := 0;sum_~i~0 := 0; 164#L20-3 [2021-10-21 19:12:11,564 INFO L793 eck$LassoCheckResult]: Loop: 164#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 177#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 164#L20-3 [2021-10-21 19:12:11,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:12:11,567 INFO L82 PathProgramCache]: Analyzing trace with hash 925707, now seen corresponding path program 1 times [2021-10-21 19:12:11,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:12:11,567 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445804047] [2021-10-21 19:12:11,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:12:11,568 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:12:11,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:12:11,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:12:11,645 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:12:11,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445804047] [2021-10-21 19:12:11,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445804047] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:12:11,647 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:12:11,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:12:11,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549110962] [2021-10-21 19:12:11,651 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-21 19:12:11,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:12:11,652 INFO L82 PathProgramCache]: Analyzing trace with hash 1731, now seen corresponding path program 1 times [2021-10-21 19:12:11,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:12:11,652 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094589225] [2021-10-21 19:12:11,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:12:11,653 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:12:11,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:12:11,668 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:12:11,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:12:11,676 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:12:11,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:12:11,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:12:11,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:12:11,735 INFO L87 Difference]: Start difference. First operand 19 states and 24 transitions. cyclomatic complexity: 10 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) [2021-10-21 19:12:11,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:12:11,772 INFO L93 Difference]: Finished difference Result 20 states and 24 transitions. [2021-10-21 19:12:11,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:12:11,774 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 24 transitions. [2021-10-21 19:12:11,776 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 8 [2021-10-21 19:12:11,777 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 20 states and 24 transitions. [2021-10-21 19:12:11,777 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2021-10-21 19:12:11,777 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2021-10-21 19:12:11,777 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 24 transitions. [2021-10-21 19:12:11,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:12:11,778 INFO L681 BuchiCegarLoop]: Abstraction has 20 states and 24 transitions. [2021-10-21 19:12:11,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 24 transitions. [2021-10-21 19:12:11,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2021-10-21 19:12:11,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 18 states have internal predecessors, (23), 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) [2021-10-21 19:12:11,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2021-10-21 19:12:11,781 INFO L704 BuchiCegarLoop]: Abstraction has 19 states and 23 transitions. [2021-10-21 19:12:11,781 INFO L587 BuchiCegarLoop]: Abstraction has 19 states and 23 transitions. [2021-10-21 19:12:11,781 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-21 19:12:11,781 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 23 transitions. [2021-10-21 19:12:11,782 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 8 [2021-10-21 19:12:11,782 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:12:11,782 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:12:11,782 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-21 19:12:11,783 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-21 19:12:11,783 INFO L791 eck$LassoCheckResult]: Stem: 206#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(10); 207#L-1 havoc main_#res;havoc main_#t~nondet6, main_#t~post5, main_~i~1, main_#t~ret7, main_#t~mem8, main_#t~mem9, main_#t~ret10, main_#t~mem11, main_#t~mem13, main_#t~post12, main_~i~2, main_#t~ret14, main_~#x~0.base, main_~#x~0.offset, main_~temp~0, main_~ret~1, main_~ret2~0, main_~ret5~0;call main_~#x~0.base, main_~#x~0.offset := #Ultimate.allocOnStack(40);havoc main_~temp~0;havoc main_~ret~1;havoc main_~ret2~0;havoc main_~ret5~0;main_~i~1 := 0; 216#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 219#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 220#L34-3 assume !(main_~i~1 < 10); 208#L34-4 sum_#in~x.base, sum_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc sum_#res;havoc sum_#t~mem4, sum_#t~post3, sum_~x.base, sum_~x.offset, sum_~i~0, sum_~ret~0;sum_~x.base, sum_~x.offset := sum_#in~x.base, sum_#in~x.offset;havoc sum_~i~0;havoc sum_~ret~0;sum_~ret~0 := 0;sum_~i~0 := 0; 209#L20-3 [2021-10-21 19:12:11,783 INFO L793 eck$LassoCheckResult]: Loop: 209#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 222#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 209#L20-3 [2021-10-21 19:12:11,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:12:11,784 INFO L82 PathProgramCache]: Analyzing trace with hash 889660429, now seen corresponding path program 1 times [2021-10-21 19:12:11,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:12:11,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335419590] [2021-10-21 19:12:11,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:12:11,784 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:12:11,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:12:11,842 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:12:11,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:12:11,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335419590] [2021-10-21 19:12:11,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335419590] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:12:11,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536932521] [2021-10-21 19:12:11,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:12:11,844 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:12:11,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:12:11,847 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:12:11,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-10-21 19:12:11,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-10-21 19:12:11,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:12:11,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-21 19:12:11,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:12:11,935 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:12:11,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536932521] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:12:11,936 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:12:11,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-10-21 19:12:11,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138594360] [2021-10-21 19:12:11,937 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-21 19:12:11,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:12:11,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1731, now seen corresponding path program 2 times [2021-10-21 19:12:11,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:12:11,938 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417018813] [2021-10-21 19:12:11,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:12:11,939 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:12:11,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:12:11,945 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:12:11,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:12:11,952 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:12:12,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:12:12,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:12:12,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:12:12,007 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. cyclomatic complexity: 9 Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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) [2021-10-21 19:12:12,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:12:12,025 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2021-10-21 19:12:12,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:12:12,026 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 26 transitions. [2021-10-21 19:12:12,027 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 8 [2021-10-21 19:12:12,028 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 22 states and 26 transitions. [2021-10-21 19:12:12,029 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2021-10-21 19:12:12,029 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2021-10-21 19:12:12,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 26 transitions. [2021-10-21 19:12:12,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:12:12,030 INFO L681 BuchiCegarLoop]: Abstraction has 22 states and 26 transitions. [2021-10-21 19:12:12,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 26 transitions. [2021-10-21 19:12:12,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2021-10-21 19:12:12,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 20 states have internal predecessors, (25), 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) [2021-10-21 19:12:12,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2021-10-21 19:12:12,033 INFO L704 BuchiCegarLoop]: Abstraction has 21 states and 25 transitions. [2021-10-21 19:12:12,033 INFO L587 BuchiCegarLoop]: Abstraction has 21 states and 25 transitions. [2021-10-21 19:12:12,033 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-21 19:12:12,034 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states and 25 transitions. [2021-10-21 19:12:12,035 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 8 [2021-10-21 19:12:12,035 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:12:12,035 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:12:12,035 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1] [2021-10-21 19:12:12,036 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-21 19:12:12,036 INFO L791 eck$LassoCheckResult]: Stem: 270#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(10); 271#L-1 havoc main_#res;havoc main_#t~nondet6, main_#t~post5, main_~i~1, main_#t~ret7, main_#t~mem8, main_#t~mem9, main_#t~ret10, main_#t~mem11, main_#t~mem13, main_#t~post12, main_~i~2, main_#t~ret14, main_~#x~0.base, main_~#x~0.offset, main_~temp~0, main_~ret~1, main_~ret2~0, main_~ret5~0;call main_~#x~0.base, main_~#x~0.offset := #Ultimate.allocOnStack(40);havoc main_~temp~0;havoc main_~ret~1;havoc main_~ret2~0;havoc main_~ret5~0;main_~i~1 := 0; 280#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 287#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 288#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 283#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 284#L34-3 assume !(main_~i~1 < 10); 272#L34-4 sum_#in~x.base, sum_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc sum_#res;havoc sum_#t~mem4, sum_#t~post3, sum_~x.base, sum_~x.offset, sum_~i~0, sum_~ret~0;sum_~x.base, sum_~x.offset := sum_#in~x.base, sum_#in~x.offset;havoc sum_~i~0;havoc sum_~ret~0;sum_~ret~0 := 0;sum_~i~0 := 0; 273#L20-3 [2021-10-21 19:12:12,036 INFO L793 eck$LassoCheckResult]: Loop: 273#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 286#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 273#L20-3 [2021-10-21 19:12:12,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:12:12,037 INFO L82 PathProgramCache]: Analyzing trace with hash 265236367, now seen corresponding path program 2 times [2021-10-21 19:12:12,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:12:12,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763261749] [2021-10-21 19:12:12,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:12:12,038 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:12:12,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:12:12,089 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:12:12,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:12:12,090 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763261749] [2021-10-21 19:12:12,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763261749] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:12:12,090 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275155778] [2021-10-21 19:12:12,090 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:12:12,091 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:12:12,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:12:12,092 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:12:12,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-10-21 19:12:12,164 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:12:12,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:12:12,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 19:12:12,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:12:12,200 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:12:12,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275155778] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:12:12,200 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:12:12,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-10-21 19:12:12,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696147353] [2021-10-21 19:12:12,201 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-21 19:12:12,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:12:12,202 INFO L82 PathProgramCache]: Analyzing trace with hash 1731, now seen corresponding path program 3 times [2021-10-21 19:12:12,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:12:12,203 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460356061] [2021-10-21 19:12:12,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:12:12,203 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:12:12,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:12:12,209 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:12:12,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:12:12,215 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:12:12,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:12:12,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:12:12,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:12:12,273 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. cyclomatic complexity: 9 Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 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) [2021-10-21 19:12:12,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:12:12,297 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2021-10-21 19:12:12,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:12:12,298 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 28 transitions. [2021-10-21 19:12:12,299 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 8 [2021-10-21 19:12:12,300 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 24 states and 28 transitions. [2021-10-21 19:12:12,300 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2021-10-21 19:12:12,300 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2021-10-21 19:12:12,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 28 transitions. [2021-10-21 19:12:12,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:12:12,301 INFO L681 BuchiCegarLoop]: Abstraction has 24 states and 28 transitions. [2021-10-21 19:12:12,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 28 transitions. [2021-10-21 19:12:12,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2021-10-21 19:12:12,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 23 states have (on average 1.173913043478261) internal successors, (27), 22 states have internal predecessors, (27), 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) [2021-10-21 19:12:12,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2021-10-21 19:12:12,304 INFO L704 BuchiCegarLoop]: Abstraction has 23 states and 27 transitions. [2021-10-21 19:12:12,305 INFO L587 BuchiCegarLoop]: Abstraction has 23 states and 27 transitions. [2021-10-21 19:12:12,305 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-21 19:12:12,305 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states and 27 transitions. [2021-10-21 19:12:12,306 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 8 [2021-10-21 19:12:12,306 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:12:12,306 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:12:12,307 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 3, 1, 1, 1, 1] [2021-10-21 19:12:12,307 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-21 19:12:12,307 INFO L791 eck$LassoCheckResult]: Stem: 345#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(10); 346#L-1 havoc main_#res;havoc main_#t~nondet6, main_#t~post5, main_~i~1, main_#t~ret7, main_#t~mem8, main_#t~mem9, main_#t~ret10, main_#t~mem11, main_#t~mem13, main_#t~post12, main_~i~2, main_#t~ret14, main_~#x~0.base, main_~#x~0.offset, main_~temp~0, main_~ret~1, main_~ret2~0, main_~ret5~0;call main_~#x~0.base, main_~#x~0.offset := #Ultimate.allocOnStack(40);havoc main_~temp~0;havoc main_~ret~1;havoc main_~ret2~0;havoc main_~ret5~0;main_~i~1 := 0; 355#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 362#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 363#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 358#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 359#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 365#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 364#L34-3 assume !(main_~i~1 < 10); 347#L34-4 sum_#in~x.base, sum_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc sum_#res;havoc sum_#t~mem4, sum_#t~post3, sum_~x.base, sum_~x.offset, sum_~i~0, sum_~ret~0;sum_~x.base, sum_~x.offset := sum_#in~x.base, sum_#in~x.offset;havoc sum_~i~0;havoc sum_~ret~0;sum_~ret~0 := 0;sum_~i~0 := 0; 348#L20-3 [2021-10-21 19:12:12,307 INFO L793 eck$LassoCheckResult]: Loop: 348#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 361#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 348#L20-3 [2021-10-21 19:12:12,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:12:12,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1489134225, now seen corresponding path program 3 times [2021-10-21 19:12:12,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:12:12,309 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754948153] [2021-10-21 19:12:12,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:12:12,309 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:12:12,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:12:12,367 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:12:12,368 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:12:12,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754948153] [2021-10-21 19:12:12,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754948153] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:12:12,369 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053011132] [2021-10-21 19:12:12,369 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 19:12:12,369 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:12:12,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:12:12,373 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:12:12,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-10-21 19:12:12,438 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-21 19:12:12,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:12:12,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-21 19:12:12,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:12:12,494 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:12:12,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053011132] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:12:12,494 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:12:12,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2021-10-21 19:12:12,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57180773] [2021-10-21 19:12:12,495 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-21 19:12:12,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:12:12,496 INFO L82 PathProgramCache]: Analyzing trace with hash 1731, now seen corresponding path program 4 times [2021-10-21 19:12:12,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:12:12,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253332081] [2021-10-21 19:12:12,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:12:12,496 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:12:12,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:12:12,501 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:12:12,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:12:12,510 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:12:12,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:12:12,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:12:12,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:12:12,565 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. cyclomatic complexity: 9 Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 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) [2021-10-21 19:12:12,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:12:12,598 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2021-10-21 19:12:12,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 19:12:12,599 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 30 transitions. [2021-10-21 19:12:12,600 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 8 [2021-10-21 19:12:12,601 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 26 states and 30 transitions. [2021-10-21 19:12:12,601 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2021-10-21 19:12:12,602 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2021-10-21 19:12:12,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 30 transitions. [2021-10-21 19:12:12,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:12:12,602 INFO L681 BuchiCegarLoop]: Abstraction has 26 states and 30 transitions. [2021-10-21 19:12:12,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 30 transitions. [2021-10-21 19:12:12,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2021-10-21 19:12:12,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 25 states have (on average 1.16) internal successors, (29), 24 states have internal predecessors, (29), 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) [2021-10-21 19:12:12,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2021-10-21 19:12:12,628 INFO L704 BuchiCegarLoop]: Abstraction has 25 states and 29 transitions. [2021-10-21 19:12:12,628 INFO L587 BuchiCegarLoop]: Abstraction has 25 states and 29 transitions. [2021-10-21 19:12:12,628 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-10-21 19:12:12,628 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states and 29 transitions. [2021-10-21 19:12:12,630 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 8 [2021-10-21 19:12:12,630 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:12:12,630 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:12:12,631 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [4, 4, 1, 1, 1, 1] [2021-10-21 19:12:12,632 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-21 19:12:12,632 INFO L791 eck$LassoCheckResult]: Stem: 429#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(10); 430#L-1 havoc main_#res;havoc main_#t~nondet6, main_#t~post5, main_~i~1, main_#t~ret7, main_#t~mem8, main_#t~mem9, main_#t~ret10, main_#t~mem11, main_#t~mem13, main_#t~post12, main_~i~2, main_#t~ret14, main_~#x~0.base, main_~#x~0.offset, main_~temp~0, main_~ret~1, main_~ret2~0, main_~ret5~0;call main_~#x~0.base, main_~#x~0.offset := #Ultimate.allocOnStack(40);havoc main_~temp~0;havoc main_~ret~1;havoc main_~ret2~0;havoc main_~ret5~0;main_~i~1 := 0; 441#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 448#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 449#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 444#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 445#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 453#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 452#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 451#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 450#L34-3 assume !(main_~i~1 < 10); 433#L34-4 sum_#in~x.base, sum_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc sum_#res;havoc sum_#t~mem4, sum_#t~post3, sum_~x.base, sum_~x.offset, sum_~i~0, sum_~ret~0;sum_~x.base, sum_~x.offset := sum_#in~x.base, sum_#in~x.offset;havoc sum_~i~0;havoc sum_~ret~0;sum_~ret~0 := 0;sum_~i~0 := 0; 434#L20-3 [2021-10-21 19:12:12,632 INFO L793 eck$LassoCheckResult]: Loop: 434#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 447#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 434#L20-3 [2021-10-21 19:12:12,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:12:12,633 INFO L82 PathProgramCache]: Analyzing trace with hash 833936659, now seen corresponding path program 4 times [2021-10-21 19:12:12,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:12:12,633 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986508820] [2021-10-21 19:12:12,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:12:12,634 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:12:12,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:12:12,750 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:12:12,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:12:12,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986508820] [2021-10-21 19:12:12,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986508820] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:12:12,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782511009] [2021-10-21 19:12:12,751 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-21 19:12:12,752 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:12:12,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:12:12,755 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:12:12,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-10-21 19:12:12,823 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-21 19:12:12,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:12:12,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-21 19:12:12,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:12:12,891 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:12:12,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782511009] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:12:12,892 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:12:12,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2021-10-21 19:12:12,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541497929] [2021-10-21 19:12:12,895 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-21 19:12:12,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:12:12,895 INFO L82 PathProgramCache]: Analyzing trace with hash 1731, now seen corresponding path program 5 times [2021-10-21 19:12:12,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:12:12,903 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356935469] [2021-10-21 19:12:12,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:12:12,904 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:12:12,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:12:12,910 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:12:12,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:12:12,924 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:12:12,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:12:12,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 19:12:12,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:12:12,973 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. cyclomatic complexity: 9 Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:12:13,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:12:13,004 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2021-10-21 19:12:13,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 19:12:13,005 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 32 transitions. [2021-10-21 19:12:13,007 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 8 [2021-10-21 19:12:13,010 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 28 states and 32 transitions. [2021-10-21 19:12:13,010 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2021-10-21 19:12:13,010 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2021-10-21 19:12:13,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 32 transitions. [2021-10-21 19:12:13,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:12:13,011 INFO L681 BuchiCegarLoop]: Abstraction has 28 states and 32 transitions. [2021-10-21 19:12:13,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states and 32 transitions. [2021-10-21 19:12:13,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2021-10-21 19:12:13,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 26 states have internal predecessors, (31), 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) [2021-10-21 19:12:13,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2021-10-21 19:12:13,023 INFO L704 BuchiCegarLoop]: Abstraction has 27 states and 31 transitions. [2021-10-21 19:12:13,023 INFO L587 BuchiCegarLoop]: Abstraction has 27 states and 31 transitions. [2021-10-21 19:12:13,023 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-10-21 19:12:13,023 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 31 transitions. [2021-10-21 19:12:13,025 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 8 [2021-10-21 19:12:13,026 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:12:13,026 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:12:13,027 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [5, 5, 1, 1, 1, 1] [2021-10-21 19:12:13,027 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-21 19:12:13,028 INFO L791 eck$LassoCheckResult]: Stem: 528#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(10); 529#L-1 havoc main_#res;havoc main_#t~nondet6, main_#t~post5, main_~i~1, main_#t~ret7, main_#t~mem8, main_#t~mem9, main_#t~ret10, main_#t~mem11, main_#t~mem13, main_#t~post12, main_~i~2, main_#t~ret14, main_~#x~0.base, main_~#x~0.offset, main_~temp~0, main_~ret~1, main_~ret2~0, main_~ret5~0;call main_~#x~0.base, main_~#x~0.offset := #Ultimate.allocOnStack(40);havoc main_~temp~0;havoc main_~ret~1;havoc main_~ret2~0;havoc main_~ret5~0;main_~i~1 := 0; 538#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 545#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 546#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 541#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 542#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 552#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 551#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 550#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 549#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 548#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 547#L34-3 assume !(main_~i~1 < 10); 530#L34-4 sum_#in~x.base, sum_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc sum_#res;havoc sum_#t~mem4, sum_#t~post3, sum_~x.base, sum_~x.offset, sum_~i~0, sum_~ret~0;sum_~x.base, sum_~x.offset := sum_#in~x.base, sum_#in~x.offset;havoc sum_~i~0;havoc sum_~ret~0;sum_~ret~0 := 0;sum_~i~0 := 0; 531#L20-3 [2021-10-21 19:12:13,029 INFO L793 eck$LassoCheckResult]: Loop: 531#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 544#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 531#L20-3 [2021-10-21 19:12:13,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:12:13,030 INFO L82 PathProgramCache]: Analyzing trace with hash -1745699051, now seen corresponding path program 5 times [2021-10-21 19:12:13,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:12:13,030 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865690453] [2021-10-21 19:12:13,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:12:13,031 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:12:13,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:12:13,145 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:12:13,145 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:12:13,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865690453] [2021-10-21 19:12:13,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865690453] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:12:13,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903480721] [2021-10-21 19:12:13,146 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-21 19:12:13,146 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:12:13,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:12:13,149 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:12:13,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-10-21 19:12:13,247 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-10-21 19:12:13,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:12:13,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 19:12:13,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:12:13,326 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:12:13,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903480721] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:12:13,327 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:12:13,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2021-10-21 19:12:13,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809753220] [2021-10-21 19:12:13,328 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-21 19:12:13,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:12:13,329 INFO L82 PathProgramCache]: Analyzing trace with hash 1731, now seen corresponding path program 6 times [2021-10-21 19:12:13,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:12:13,329 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721906814] [2021-10-21 19:12:13,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:12:13,330 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:12:13,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:12:13,334 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:12:13,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:12:13,339 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:12:13,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:12:13,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-21 19:12:13,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:12:13,384 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. cyclomatic complexity: 9 Second operand has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 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) [2021-10-21 19:12:13,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:12:13,416 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2021-10-21 19:12:13,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 19:12:13,417 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 30 states and 34 transitions. [2021-10-21 19:12:13,418 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 8 [2021-10-21 19:12:13,419 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 30 states to 30 states and 34 transitions. [2021-10-21 19:12:13,419 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2021-10-21 19:12:13,419 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2021-10-21 19:12:13,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 34 transitions. [2021-10-21 19:12:13,420 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:12:13,420 INFO L681 BuchiCegarLoop]: Abstraction has 30 states and 34 transitions. [2021-10-21 19:12:13,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states and 34 transitions. [2021-10-21 19:12:13,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2021-10-21 19:12:13,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 28 states have internal predecessors, (33), 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) [2021-10-21 19:12:13,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2021-10-21 19:12:13,423 INFO L704 BuchiCegarLoop]: Abstraction has 29 states and 33 transitions. [2021-10-21 19:12:13,424 INFO L587 BuchiCegarLoop]: Abstraction has 29 states and 33 transitions. [2021-10-21 19:12:13,424 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-10-21 19:12:13,424 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 29 states and 33 transitions. [2021-10-21 19:12:13,424 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 8 [2021-10-21 19:12:13,425 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:12:13,425 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:12:13,426 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [6, 6, 1, 1, 1, 1] [2021-10-21 19:12:13,426 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-21 19:12:13,426 INFO L791 eck$LassoCheckResult]: Stem: 634#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(10); 635#L-1 havoc main_#res;havoc main_#t~nondet6, main_#t~post5, main_~i~1, main_#t~ret7, main_#t~mem8, main_#t~mem9, main_#t~ret10, main_#t~mem11, main_#t~mem13, main_#t~post12, main_~i~2, main_#t~ret14, main_~#x~0.base, main_~#x~0.offset, main_~temp~0, main_~ret~1, main_~ret2~0, main_~ret5~0;call main_~#x~0.base, main_~#x~0.offset := #Ultimate.allocOnStack(40);havoc main_~temp~0;havoc main_~ret~1;havoc main_~ret2~0;havoc main_~ret5~0;main_~i~1 := 0; 646#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 653#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 654#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 649#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 650#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 662#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 661#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 660#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 659#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 658#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 657#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 656#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 655#L34-3 assume !(main_~i~1 < 10); 638#L34-4 sum_#in~x.base, sum_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc sum_#res;havoc sum_#t~mem4, sum_#t~post3, sum_~x.base, sum_~x.offset, sum_~i~0, sum_~ret~0;sum_~x.base, sum_~x.offset := sum_#in~x.base, sum_#in~x.offset;havoc sum_~i~0;havoc sum_~ret~0;sum_~ret~0 := 0;sum_~i~0 := 0; 639#L20-3 [2021-10-21 19:12:13,426 INFO L793 eck$LassoCheckResult]: Loop: 639#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 652#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 639#L20-3 [2021-10-21 19:12:13,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:12:13,427 INFO L82 PathProgramCache]: Analyzing trace with hash 1715480727, now seen corresponding path program 6 times [2021-10-21 19:12:13,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:12:13,427 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532719093] [2021-10-21 19:12:13,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:12:13,428 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:12:13,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:12:13,520 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:12:13,521 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:12:13,521 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532719093] [2021-10-21 19:12:13,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532719093] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:12:13,522 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896271258] [2021-10-21 19:12:13,522 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-21 19:12:13,522 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:12:13,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:12:13,532 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:12:13,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-10-21 19:12:13,621 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-10-21 19:12:13,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:12:13,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-21 19:12:13,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:12:13,684 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:12:13,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896271258] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:12:13,685 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:12:13,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2021-10-21 19:12:13,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14032680] [2021-10-21 19:12:13,686 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-21 19:12:13,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:12:13,687 INFO L82 PathProgramCache]: Analyzing trace with hash 1731, now seen corresponding path program 7 times [2021-10-21 19:12:13,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:12:13,687 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884357589] [2021-10-21 19:12:13,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:12:13,687 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:12:13,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:12:13,692 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:12:13,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:12:13,697 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:12:13,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:12:13,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 19:12:13,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-10-21 19:12:13,769 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. cyclomatic complexity: 9 Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 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) [2021-10-21 19:12:13,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:12:13,817 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2021-10-21 19:12:13,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 19:12:13,818 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 36 transitions. [2021-10-21 19:12:13,818 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 8 [2021-10-21 19:12:13,819 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 32 states and 36 transitions. [2021-10-21 19:12:13,819 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2021-10-21 19:12:13,819 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2021-10-21 19:12:13,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 36 transitions. [2021-10-21 19:12:13,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:12:13,820 INFO L681 BuchiCegarLoop]: Abstraction has 32 states and 36 transitions. [2021-10-21 19:12:13,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states and 36 transitions. [2021-10-21 19:12:13,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2021-10-21 19:12:13,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 30 states have internal predecessors, (35), 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) [2021-10-21 19:12:13,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2021-10-21 19:12:13,847 INFO L704 BuchiCegarLoop]: Abstraction has 31 states and 35 transitions. [2021-10-21 19:12:13,847 INFO L587 BuchiCegarLoop]: Abstraction has 31 states and 35 transitions. [2021-10-21 19:12:13,847 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-10-21 19:12:13,847 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 35 transitions. [2021-10-21 19:12:13,848 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 8 [2021-10-21 19:12:13,848 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:12:13,848 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:12:13,849 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [7, 7, 1, 1, 1, 1] [2021-10-21 19:12:13,849 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-21 19:12:13,849 INFO L791 eck$LassoCheckResult]: Stem: 753#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(10); 754#L-1 havoc main_#res;havoc main_#t~nondet6, main_#t~post5, main_~i~1, main_#t~ret7, main_#t~mem8, main_#t~mem9, main_#t~ret10, main_#t~mem11, main_#t~mem13, main_#t~post12, main_~i~2, main_#t~ret14, main_~#x~0.base, main_~#x~0.offset, main_~temp~0, main_~ret~1, main_~ret2~0, main_~ret5~0;call main_~#x~0.base, main_~#x~0.offset := #Ultimate.allocOnStack(40);havoc main_~temp~0;havoc main_~ret~1;havoc main_~ret2~0;havoc main_~ret5~0;main_~i~1 := 0; 765#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 772#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 773#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 768#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 769#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 783#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 782#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 781#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 780#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 779#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 778#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 777#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 776#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 775#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 774#L34-3 assume !(main_~i~1 < 10); 757#L34-4 sum_#in~x.base, sum_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc sum_#res;havoc sum_#t~mem4, sum_#t~post3, sum_~x.base, sum_~x.offset, sum_~i~0, sum_~ret~0;sum_~x.base, sum_~x.offset := sum_#in~x.base, sum_#in~x.offset;havoc sum_~i~0;havoc sum_~ret~0;sum_~ret~0 := 0;sum_~i~0 := 0; 758#L20-3 [2021-10-21 19:12:13,850 INFO L793 eck$LassoCheckResult]: Loop: 758#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 771#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 758#L20-3 [2021-10-21 19:12:13,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:12:13,850 INFO L82 PathProgramCache]: Analyzing trace with hash -690407015, now seen corresponding path program 7 times [2021-10-21 19:12:13,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:12:13,851 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221367675] [2021-10-21 19:12:13,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:12:13,851 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:12:13,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:12:13,935 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:12:13,936 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:12:13,936 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221367675] [2021-10-21 19:12:13,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221367675] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:12:13,936 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573744527] [2021-10-21 19:12:13,936 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-21 19:12:13,937 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:12:13,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:12:13,939 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:12:13,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-10-21 19:12:14,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:12:14,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-21 19:12:14,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:12:14,103 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:12:14,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573744527] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:12:14,104 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:12:14,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2021-10-21 19:12:14,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188805722] [2021-10-21 19:12:14,105 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-21 19:12:14,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:12:14,106 INFO L82 PathProgramCache]: Analyzing trace with hash 1731, now seen corresponding path program 8 times [2021-10-21 19:12:14,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:12:14,106 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774897125] [2021-10-21 19:12:14,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:12:14,107 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:12:14,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:12:14,111 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:12:14,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:12:14,116 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:12:14,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:12:14,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-21 19:12:14,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-10-21 19:12:14,163 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. cyclomatic complexity: 9 Second operand has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 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) [2021-10-21 19:12:14,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:12:14,213 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2021-10-21 19:12:14,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 19:12:14,214 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 38 transitions. [2021-10-21 19:12:14,215 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 8 [2021-10-21 19:12:14,219 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 34 states and 38 transitions. [2021-10-21 19:12:14,219 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2021-10-21 19:12:14,220 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2021-10-21 19:12:14,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 38 transitions. [2021-10-21 19:12:14,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:12:14,221 INFO L681 BuchiCegarLoop]: Abstraction has 34 states and 38 transitions. [2021-10-21 19:12:14,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states and 38 transitions. [2021-10-21 19:12:14,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2021-10-21 19:12:14,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 33 states have (on average 1.121212121212121) internal successors, (37), 32 states have internal predecessors, (37), 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) [2021-10-21 19:12:14,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2021-10-21 19:12:14,230 INFO L704 BuchiCegarLoop]: Abstraction has 33 states and 37 transitions. [2021-10-21 19:12:14,230 INFO L587 BuchiCegarLoop]: Abstraction has 33 states and 37 transitions. [2021-10-21 19:12:14,231 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-10-21 19:12:14,231 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 33 states and 37 transitions. [2021-10-21 19:12:14,231 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 8 [2021-10-21 19:12:14,232 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:12:14,232 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:12:14,234 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [8, 8, 1, 1, 1, 1] [2021-10-21 19:12:14,234 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-21 19:12:14,235 INFO L791 eck$LassoCheckResult]: Stem: 883#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(10); 884#L-1 havoc main_#res;havoc main_#t~nondet6, main_#t~post5, main_~i~1, main_#t~ret7, main_#t~mem8, main_#t~mem9, main_#t~ret10, main_#t~mem11, main_#t~mem13, main_#t~post12, main_~i~2, main_#t~ret14, main_~#x~0.base, main_~#x~0.offset, main_~temp~0, main_~ret~1, main_~ret2~0, main_~ret5~0;call main_~#x~0.base, main_~#x~0.offset := #Ultimate.allocOnStack(40);havoc main_~temp~0;havoc main_~ret~1;havoc main_~ret2~0;havoc main_~ret5~0;main_~i~1 := 0; 895#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 902#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 903#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 898#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 899#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 915#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 914#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 913#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 912#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 911#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 910#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 909#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 908#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 907#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 906#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 905#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 904#L34-3 assume !(main_~i~1 < 10); 887#L34-4 sum_#in~x.base, sum_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc sum_#res;havoc sum_#t~mem4, sum_#t~post3, sum_~x.base, sum_~x.offset, sum_~i~0, sum_~ret~0;sum_~x.base, sum_~x.offset := sum_#in~x.base, sum_#in~x.offset;havoc sum_~i~0;havoc sum_~ret~0;sum_~ret~0 := 0;sum_~i~0 := 0; 888#L20-3 [2021-10-21 19:12:14,235 INFO L793 eck$LassoCheckResult]: Loop: 888#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 901#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 888#L20-3 [2021-10-21 19:12:14,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:12:14,239 INFO L82 PathProgramCache]: Analyzing trace with hash -2056121829, now seen corresponding path program 8 times [2021-10-21 19:12:14,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:12:14,239 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028132056] [2021-10-21 19:12:14,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:12:14,240 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:12:14,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:12:14,392 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:12:14,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:12:14,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028132056] [2021-10-21 19:12:14,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028132056] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:12:14,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969363628] [2021-10-21 19:12:14,394 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:12:14,395 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:12:14,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:12:14,401 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:12:14,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-10-21 19:12:14,497 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:12:14,497 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:12:14,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-21 19:12:14,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:12:14,591 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:12:14,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [969363628] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:12:14,592 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:12:14,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2021-10-21 19:12:14,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853390156] [2021-10-21 19:12:14,593 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-21 19:12:14,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:12:14,594 INFO L82 PathProgramCache]: Analyzing trace with hash 1731, now seen corresponding path program 9 times [2021-10-21 19:12:14,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:12:14,594 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926559120] [2021-10-21 19:12:14,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:12:14,595 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:12:14,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:12:14,599 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:12:14,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:12:14,604 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:12:14,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:12:14,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-21 19:12:14,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-10-21 19:12:14,650 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. cyclomatic complexity: 9 Second operand has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 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) [2021-10-21 19:12:14,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:12:14,693 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2021-10-21 19:12:14,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-21 19:12:14,694 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 40 transitions. [2021-10-21 19:12:14,696 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 8 [2021-10-21 19:12:14,698 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 36 states and 40 transitions. [2021-10-21 19:12:14,698 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2021-10-21 19:12:14,698 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2021-10-21 19:12:14,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 40 transitions. [2021-10-21 19:12:14,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:12:14,704 INFO L681 BuchiCegarLoop]: Abstraction has 36 states and 40 transitions. [2021-10-21 19:12:14,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 40 transitions. [2021-10-21 19:12:14,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2021-10-21 19:12:14,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 35 states have (on average 1.1142857142857143) internal successors, (39), 34 states have internal predecessors, (39), 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) [2021-10-21 19:12:14,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2021-10-21 19:12:14,716 INFO L704 BuchiCegarLoop]: Abstraction has 35 states and 39 transitions. [2021-10-21 19:12:14,716 INFO L587 BuchiCegarLoop]: Abstraction has 35 states and 39 transitions. [2021-10-21 19:12:14,716 INFO L425 BuchiCegarLoop]: ======== Iteration 11============ [2021-10-21 19:12:14,716 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 39 transitions. [2021-10-21 19:12:14,718 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 8 [2021-10-21 19:12:14,719 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:12:14,719 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:12:14,720 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [9, 9, 1, 1, 1, 1] [2021-10-21 19:12:14,720 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-21 19:12:14,721 INFO L791 eck$LassoCheckResult]: Stem: 1024#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(10); 1025#L-1 havoc main_#res;havoc main_#t~nondet6, main_#t~post5, main_~i~1, main_#t~ret7, main_#t~mem8, main_#t~mem9, main_#t~ret10, main_#t~mem11, main_#t~mem13, main_#t~post12, main_~i~2, main_#t~ret14, main_~#x~0.base, main_~#x~0.offset, main_~temp~0, main_~ret~1, main_~ret2~0, main_~ret5~0;call main_~#x~0.base, main_~#x~0.offset := #Ultimate.allocOnStack(40);havoc main_~temp~0;havoc main_~ret~1;havoc main_~ret2~0;havoc main_~ret5~0;main_~i~1 := 0; 1036#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1043#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1044#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1039#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1040#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1058#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1057#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1056#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1055#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1054#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1053#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1052#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1051#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1050#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1049#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1048#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1047#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1046#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1045#L34-3 assume !(main_~i~1 < 10); 1028#L34-4 sum_#in~x.base, sum_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc sum_#res;havoc sum_#t~mem4, sum_#t~post3, sum_~x.base, sum_~x.offset, sum_~i~0, sum_~ret~0;sum_~x.base, sum_~x.offset := sum_#in~x.base, sum_#in~x.offset;havoc sum_~i~0;havoc sum_~ret~0;sum_~ret~0 := 0;sum_~i~0 := 0; 1029#L20-3 [2021-10-21 19:12:14,721 INFO L793 eck$LassoCheckResult]: Loop: 1029#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 1042#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 1029#L20-3 [2021-10-21 19:12:14,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:12:14,722 INFO L82 PathProgramCache]: Analyzing trace with hash -248065507, now seen corresponding path program 9 times [2021-10-21 19:12:14,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:12:14,722 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770474973] [2021-10-21 19:12:14,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:12:14,723 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:12:14,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:12:14,906 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:12:14,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:12:14,906 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770474973] [2021-10-21 19:12:14,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770474973] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:12:14,907 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916379160] [2021-10-21 19:12:14,907 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 19:12:14,907 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:12:14,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:12:14,909 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:12:14,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-10-21 19:12:15,071 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-10-21 19:12:15,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:12:15,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-21 19:12:15,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:12:15,155 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:12:15,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916379160] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:12:15,156 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:12:15,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2021-10-21 19:12:15,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166903413] [2021-10-21 19:12:15,156 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-21 19:12:15,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:12:15,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1731, now seen corresponding path program 10 times [2021-10-21 19:12:15,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:12:15,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272222123] [2021-10-21 19:12:15,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:12:15,158 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:12:15,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:12:15,162 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:12:15,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:12:15,166 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:12:15,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:12:15,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-21 19:12:15,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-10-21 19:12:15,213 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. cyclomatic complexity: 9 Second operand has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 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) [2021-10-21 19:12:15,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:12:15,263 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2021-10-21 19:12:15,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-21 19:12:15,263 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 37 states and 41 transitions. [2021-10-21 19:12:15,264 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 8 [2021-10-21 19:12:15,265 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 37 states to 37 states and 41 transitions. [2021-10-21 19:12:15,265 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2021-10-21 19:12:15,265 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2021-10-21 19:12:15,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 41 transitions. [2021-10-21 19:12:15,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:12:15,266 INFO L681 BuchiCegarLoop]: Abstraction has 37 states and 41 transitions. [2021-10-21 19:12:15,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 41 transitions. [2021-10-21 19:12:15,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-10-21 19:12:15,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 37 states have (on average 1.1081081081081081) internal successors, (41), 36 states have internal predecessors, (41), 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) [2021-10-21 19:12:15,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2021-10-21 19:12:15,273 INFO L704 BuchiCegarLoop]: Abstraction has 37 states and 41 transitions. [2021-10-21 19:12:15,273 INFO L587 BuchiCegarLoop]: Abstraction has 37 states and 41 transitions. [2021-10-21 19:12:15,273 INFO L425 BuchiCegarLoop]: ======== Iteration 12============ [2021-10-21 19:12:15,273 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 37 states and 41 transitions. [2021-10-21 19:12:15,274 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 8 [2021-10-21 19:12:15,274 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:12:15,274 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:12:15,275 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [10, 10, 1, 1, 1, 1] [2021-10-21 19:12:15,275 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-21 19:12:15,276 INFO L791 eck$LassoCheckResult]: Stem: 1177#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(10); 1178#L-1 havoc main_#res;havoc main_#t~nondet6, main_#t~post5, main_~i~1, main_#t~ret7, main_#t~mem8, main_#t~mem9, main_#t~ret10, main_#t~mem11, main_#t~mem13, main_#t~post12, main_~i~2, main_#t~ret14, main_~#x~0.base, main_~#x~0.offset, main_~temp~0, main_~ret~1, main_~ret2~0, main_~ret5~0;call main_~#x~0.base, main_~#x~0.offset := #Ultimate.allocOnStack(40);havoc main_~temp~0;havoc main_~ret~1;havoc main_~ret2~0;havoc main_~ret5~0;main_~i~1 := 0; 1187#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1194#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1195#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1190#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1191#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1211#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1210#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1209#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1208#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1207#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1206#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1205#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1204#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1203#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1202#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1201#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1200#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1199#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1198#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1197#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1196#L34-3 assume !(main_~i~1 < 10); 1179#L34-4 sum_#in~x.base, sum_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc sum_#res;havoc sum_#t~mem4, sum_#t~post3, sum_~x.base, sum_~x.offset, sum_~i~0, sum_~ret~0;sum_~x.base, sum_~x.offset := sum_#in~x.base, sum_#in~x.offset;havoc sum_~i~0;havoc sum_~ret~0;sum_~ret~0 := 0;sum_~i~0 := 0; 1180#L20-3 [2021-10-21 19:12:15,276 INFO L793 eck$LassoCheckResult]: Loop: 1180#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 1193#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 1180#L20-3 [2021-10-21 19:12:15,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:12:15,276 INFO L82 PathProgramCache]: Analyzing trace with hash 2127272351, now seen corresponding path program 10 times [2021-10-21 19:12:15,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:12:15,277 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807312087] [2021-10-21 19:12:15,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:12:15,278 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:12:15,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:12:15,308 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:12:15,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:12:15,354 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:12:15,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:12:15,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1731, now seen corresponding path program 11 times [2021-10-21 19:12:15,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:12:15,355 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246077601] [2021-10-21 19:12:15,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:12:15,355 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:12:15,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:12:15,359 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:12:15,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:12:15,372 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:12:15,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:12:15,373 INFO L82 PathProgramCache]: Analyzing trace with hash -95702815, now seen corresponding path program 1 times [2021-10-21 19:12:15,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:12:15,373 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583708926] [2021-10-21 19:12:15,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:12:15,374 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:12:15,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:12:15,410 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:12:15,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:12:15,458 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:12:22,556 WARN L207 SmtUtils]: Spent 7.04 s on a formula simplification. DAG size of input: 251 DAG size of output: 181 [2021-10-21 19:12:24,077 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:12:24,077 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:12:24,078 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:12:24,078 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:12:24,078 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-21 19:12:24,078 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:12:24,078 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:12:24,078 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:12:24,078 INFO L133 ssoRankerPreferences]: Filename of dumped script: sum10-1.i_Iteration12_Lasso [2021-10-21 19:12:24,078 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:12:24,078 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:12:24,082 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:12:24,085 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:12:24,087 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:12:24,089 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:12:24,092 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:12:24,094 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:12:24,096 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:12:24,098 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:12:24,100 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:12:24,102 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:12:24,104 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:12:24,107 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:12:24,122 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:12:24,124 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:12:24,592 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:12:24,594 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:12:24,596 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:12:24,597 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:12:24,599 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:12:24,604 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:12:24,605 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:12:24,607 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:12:24,610 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:12:24,907 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:12:24,907 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-21 19:12:24,907 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:12:24,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:12:24,910 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:12:24,918 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 [2021-10-21 19:12:24,929 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:12:24,929 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:12:24,929 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:12:24,930 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:12:24,930 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:12:24,931 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:12:24,931 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:12:24,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-10-21 19:12:24,942 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:12:24,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2021-10-21 19:12:24,968 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:12:24,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:12:24,969 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:12:24,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-10-21 19:12:24,971 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 [2021-10-21 19:12:24,980 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:12:24,980 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:12:24,980 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:12:24,980 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:12:24,980 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:12:24,981 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:12:24,981 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:12:24,982 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:12:25,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2021-10-21 19:12:25,006 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:12:25,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:12:25,007 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:12:25,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-10-21 19:12:25,025 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 [2021-10-21 19:12:25,033 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:12:25,033 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:12:25,033 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:12:25,033 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:12:25,034 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:12:25,034 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:12:25,034 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:12:25,035 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:12:25,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2021-10-21 19:12:25,059 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:12:25,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:12:25,060 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:12:25,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-10-21 19:12:25,067 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 [2021-10-21 19:12:25,076 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:12:25,076 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:12:25,076 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:12:25,076 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:12:25,084 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-21 19:12:25,084 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-21 19:12:25,087 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:12:25,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2021-10-21 19:12:25,112 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:12:25,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:12:25,113 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:12:25,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-10-21 19:12:25,115 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 [2021-10-21 19:12:25,123 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:12:25,123 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:12:25,124 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:12:25,124 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:12:25,124 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:12:25,125 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:12:25,125 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:12:25,141 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:12:25,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2021-10-21 19:12:25,164 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:12:25,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:12:25,165 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:12:25,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-10-21 19:12:25,167 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 [2021-10-21 19:12:25,176 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:12:25,176 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:12:25,176 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:12:25,176 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:12:25,176 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:12:25,177 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:12:25,177 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:12:25,178 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:12:25,201 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Ended with exit code 0 [2021-10-21 19:12:25,202 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:12:25,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:12:25,203 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:12:25,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-10-21 19:12:25,217 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 [2021-10-21 19:12:25,228 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:12:25,228 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:12:25,228 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:12:25,228 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:12:25,228 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:12:25,229 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:12:25,229 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:12:25,243 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:12:25,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2021-10-21 19:12:25,282 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:12:25,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:12:25,286 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:12:25,293 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 [2021-10-21 19:12:25,304 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:12:25,304 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:12:25,305 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:12:25,305 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:12:25,305 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:12:25,305 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:12:25,306 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:12:25,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2021-10-21 19:12:25,321 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:12:25,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2021-10-21 19:12:25,362 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:12:25,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:12:25,364 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:12:25,367 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 [2021-10-21 19:12:25,379 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:12:25,379 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:12:25,379 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:12:25,379 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:12:25,379 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:12:25,380 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:12:25,380 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:12:25,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2021-10-21 19:12:25,393 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:12:25,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2021-10-21 19:12:25,434 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:12:25,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:12:25,435 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:12:25,438 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 [2021-10-21 19:12:25,449 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:12:25,449 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:12:25,449 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:12:25,449 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:12:25,449 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:12:25,451 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:12:25,451 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:12:25,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2021-10-21 19:12:25,454 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:12:25,477 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Ended with exit code 0 [2021-10-21 19:12:25,478 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:12:25,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:12:25,481 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:12:25,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2021-10-21 19:12:25,482 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 [2021-10-21 19:12:25,492 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:12:25,492 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:12:25,492 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:12:25,492 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:12:25,494 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-21 19:12:25,495 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-21 19:12:25,499 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:12:25,522 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2021-10-21 19:12:25,523 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:12:25,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:12:25,524 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:12:25,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2021-10-21 19:12:25,526 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 [2021-10-21 19:12:25,535 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:12:25,535 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:12:25,535 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:12:25,535 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:12:25,535 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:12:25,536 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:12:25,536 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:12:25,537 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:12:25,561 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Ended with exit code 0 [2021-10-21 19:12:25,562 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:12:25,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:12:25,563 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:12:25,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2021-10-21 19:12:25,565 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 [2021-10-21 19:12:25,574 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:12:25,574 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:12:25,574 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:12:25,574 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:12:25,576 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-21 19:12:25,577 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-21 19:12:25,601 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:12:25,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2021-10-21 19:12:25,625 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:12:25,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:12:25,626 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:12:25,632 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 [2021-10-21 19:12:25,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2021-10-21 19:12:25,641 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:12:25,642 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:12:25,642 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:12:25,642 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:12:25,649 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-21 19:12:25,649 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-21 19:12:25,669 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:12:25,692 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Ended with exit code 0 [2021-10-21 19:12:25,693 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:12:25,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:12:25,694 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:12:25,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2021-10-21 19:12:25,695 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 [2021-10-21 19:12:25,704 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:12:25,704 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:12:25,704 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:12:25,704 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:12:25,706 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-21 19:12:25,706 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-21 19:12:25,709 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:12:25,740 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Ended with exit code 0 [2021-10-21 19:12:25,740 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:12:25,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:12:25,741 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:12:25,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2021-10-21 19:12:25,743 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 [2021-10-21 19:12:25,752 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:12:25,752 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:12:25,752 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:12:25,752 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:12:25,752 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:12:25,753 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:12:25,753 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:12:25,754 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:12:25,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2021-10-21 19:12:25,778 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:12:25,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:12:25,779 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:12:25,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2021-10-21 19:12:25,782 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 [2021-10-21 19:12:25,790 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:12:25,791 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:12:25,791 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:12:25,791 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:12:25,793 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-21 19:12:25,794 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-21 19:12:25,817 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:12:25,862 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2021-10-21 19:12:25,862 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:12:25,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:12:25,863 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:12:25,870 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 [2021-10-21 19:12:25,881 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:12:25,881 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:12:25,881 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:12:25,882 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:12:25,883 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-21 19:12:25,884 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-21 19:12:25,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2021-10-21 19:12:25,917 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:12:25,952 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Ended with exit code 0 [2021-10-21 19:12:25,952 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:12:25,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:12:25,953 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:12:25,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2021-10-21 19:12:25,955 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 [2021-10-21 19:12:25,963 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:12:25,963 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:12:25,963 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:12:25,964 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:12:25,966 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-21 19:12:25,966 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-21 19:12:25,998 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:12:26,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Forceful destruction successful, exit code 0 [2021-10-21 19:12:26,042 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:12:26,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:12:26,044 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:12:26,050 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 [2021-10-21 19:12:26,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2021-10-21 19:12:26,060 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:12:26,060 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:12:26,060 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:12:26,061 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:12:26,064 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-21 19:12:26,064 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-21 19:12:26,076 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:12:26,121 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Forceful destruction successful, exit code 0 [2021-10-21 19:12:26,122 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:12:26,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:12:26,123 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:12:26,126 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 [2021-10-21 19:12:26,137 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:12:26,137 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:12:26,138 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:12:26,138 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:12:26,140 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-21 19:12:26,140 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-21 19:12:26,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2021-10-21 19:12:26,154 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:12:26,201 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Forceful destruction successful, exit code 0 [2021-10-21 19:12:26,201 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:12:26,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:12:26,203 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:12:26,206 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 [2021-10-21 19:12:26,217 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:12:26,217 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:12:26,217 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:12:26,218 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:12:26,222 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-21 19:12:26,222 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-21 19:12:26,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2021-10-21 19:12:26,234 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:12:26,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Forceful destruction successful, exit code 0 [2021-10-21 19:12:26,282 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:12:26,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:12:26,284 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:12:26,291 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 [2021-10-21 19:12:26,302 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:12:26,302 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:12:26,302 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:12:26,302 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:12:26,303 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:12:26,303 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:12:26,303 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:12:26,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2021-10-21 19:12:26,317 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:12:26,353 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Ended with exit code 0 [2021-10-21 19:12:26,353 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:12:26,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:12:26,354 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:12:26,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2021-10-21 19:12:26,358 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 [2021-10-21 19:12:26,367 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:12:26,367 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:12:26,367 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:12:26,367 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:12:26,370 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-21 19:12:26,370 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-21 19:12:26,389 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:12:26,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Forceful destruction successful, exit code 0 [2021-10-21 19:12:26,441 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:12:26,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:12:26,442 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:12:26,449 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 [2021-10-21 19:12:26,460 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:12:26,460 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:12:26,460 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:12:26,461 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:12:26,463 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-21 19:12:26,463 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-21 19:12:26,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Waiting until timeout for monitored process [2021-10-21 19:12:26,477 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:12:26,517 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Forceful destruction successful, exit code 0 [2021-10-21 19:12:26,518 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:12:26,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:12:26,522 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:12:26,524 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 [2021-10-21 19:12:26,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2021-10-21 19:12:26,534 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:12:26,534 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:12:26,534 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:12:26,534 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:12:26,541 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-21 19:12:26,542 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-21 19:12:26,569 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-21 19:12:26,597 INFO L443 ModelExtractionUtils]: Simplification made 8 calls to the SMT solver. [2021-10-21 19:12:26,598 INFO L444 ModelExtractionUtils]: 5 out of 19 variables were initially zero. Simplification set additionally 11 variables to zero. [2021-10-21 19:12:26,598 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:12:26,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:12:26,605 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:12:26,609 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-21 19:12:26,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2021-10-21 19:12:26,636 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2021-10-21 19:12:26,636 INFO L513 LassoAnalysis]: Proved termination. [2021-10-21 19:12:26,636 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_sum_~i~0) = -2*ULTIMATE.start_sum_~i~0 + 19 Supporting invariants [] [2021-10-21 19:12:26,678 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Forceful destruction successful, exit code 0 [2021-10-21 19:12:26,716 INFO L297 tatePredicateManager]: 11 out of 11 supporting invariants were superfluous and have been removed [2021-10-21 19:12:26,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:12:26,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:12:26,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 19:12:26,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:12:26,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:12:26,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 19:12:26,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:12:26,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:12:26,871 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 [2021-10-21 19:12:26,871 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 37 states and 41 transitions. cyclomatic complexity: 9 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2021-10-21 19:12:26,892 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 37 states and 41 transitions. cyclomatic complexity: 9. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 41 states and 48 transitions. Complement of second has 7 states. [2021-10-21 19:12:26,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-21 19:12:26,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2021-10-21 19:12:26,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2021-10-21 19:12:26,894 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 24 letters. Loop has 2 letters. [2021-10-21 19:12:26,895 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:12:26,897 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 26 letters. Loop has 2 letters. [2021-10-21 19:12:26,897 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:12:26,898 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 24 letters. Loop has 4 letters. [2021-10-21 19:12:26,898 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:12:26,898 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 41 states and 48 transitions. [2021-10-21 19:12:26,900 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 6 [2021-10-21 19:12:26,900 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 41 states to 38 states and 43 transitions. [2021-10-21 19:12:26,901 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2021-10-21 19:12:26,901 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2021-10-21 19:12:26,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 43 transitions. [2021-10-21 19:12:26,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:12:26,901 INFO L681 BuchiCegarLoop]: Abstraction has 38 states and 43 transitions. [2021-10-21 19:12:26,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states and 43 transitions. [2021-10-21 19:12:26,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-10-21 19:12:26,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 38 states have (on average 1.131578947368421) internal successors, (43), 37 states have internal predecessors, (43), 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) [2021-10-21 19:12:26,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2021-10-21 19:12:26,905 INFO L704 BuchiCegarLoop]: Abstraction has 38 states and 43 transitions. [2021-10-21 19:12:26,905 INFO L587 BuchiCegarLoop]: Abstraction has 38 states and 43 transitions. [2021-10-21 19:12:26,906 INFO L425 BuchiCegarLoop]: ======== Iteration 13============ [2021-10-21 19:12:26,906 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 38 states and 43 transitions. [2021-10-21 19:12:26,906 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 6 [2021-10-21 19:12:26,906 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:12:26,907 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:12:26,908 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [10, 10, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:12:26,908 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-21 19:12:26,908 INFO L791 eck$LassoCheckResult]: Stem: 1399#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(10); 1400#L-1 havoc main_#res;havoc main_#t~nondet6, main_#t~post5, main_~i~1, main_#t~ret7, main_#t~mem8, main_#t~mem9, main_#t~ret10, main_#t~mem11, main_#t~mem13, main_#t~post12, main_~i~2, main_#t~ret14, main_~#x~0.base, main_~#x~0.offset, main_~temp~0, main_~ret~1, main_~ret2~0, main_~ret5~0;call main_~#x~0.base, main_~#x~0.offset := #Ultimate.allocOnStack(40);havoc main_~temp~0;havoc main_~ret~1;havoc main_~ret2~0;havoc main_~ret5~0;main_~i~1 := 0; 1411#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1419#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1420#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1414#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1415#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1436#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1435#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1434#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1433#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1432#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1431#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1430#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1429#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1428#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1427#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1426#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1425#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1424#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1423#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1422#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1421#L34-3 assume !(main_~i~1 < 10); 1403#L34-4 sum_#in~x.base, sum_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc sum_#res;havoc sum_#t~mem4, sum_#t~post3, sum_~x.base, sum_~x.offset, sum_~i~0, sum_~ret~0;sum_~x.base, sum_~x.offset := sum_#in~x.base, sum_#in~x.offset;havoc sum_~i~0;havoc sum_~ret~0;sum_~ret~0 := 0;sum_~i~0 := 0; 1404#L20-3 assume !(sum_~i~0 < 10); 1412#L20-4 sum_#res := (if sum_~ret~0 % 4294967296 <= 2147483647 then sum_~ret~0 % 4294967296 else sum_~ret~0 % 4294967296 - 4294967296); 1413#L23 main_#t~ret7 := sum_#res;main_~ret~1 := main_#t~ret7;havoc main_#t~ret7;call main_#t~mem8 := read~int(main_~#x~0.base, main_~#x~0.offset, 4);main_~temp~0 := main_#t~mem8;havoc main_#t~mem8;call main_#t~mem9 := read~int(main_~#x~0.base, 4 + main_~#x~0.offset, 4);call write~int(main_#t~mem9, main_~#x~0.base, main_~#x~0.offset, 4);havoc main_#t~mem9;call write~int(main_~temp~0, main_~#x~0.base, 4 + main_~#x~0.offset, 4);sum_#in~x.base, sum_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc sum_#res;havoc sum_#t~mem4, sum_#t~post3, sum_~x.base, sum_~x.offset, sum_~i~0, sum_~ret~0;sum_~x.base, sum_~x.offset := sum_#in~x.base, sum_#in~x.offset;havoc sum_~i~0;havoc sum_~ret~0;sum_~ret~0 := 0;sum_~i~0 := 0; 1409#L20-8 [2021-10-21 19:12:26,909 INFO L793 eck$LassoCheckResult]: Loop: 1409#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 1410#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 1409#L20-8 [2021-10-21 19:12:26,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:12:26,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1328178265, now seen corresponding path program 1 times [2021-10-21 19:12:26,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:12:26,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796894958] [2021-10-21 19:12:26,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:12:26,910 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:12:26,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:12:26,963 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-10-21 19:12:26,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:12:26,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796894958] [2021-10-21 19:12:26,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796894958] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:12:26,964 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:12:26,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:12:26,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054880318] [2021-10-21 19:12:26,966 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-21 19:12:26,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:12:26,966 INFO L82 PathProgramCache]: Analyzing trace with hash 2243, now seen corresponding path program 1 times [2021-10-21 19:12:26,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:12:26,967 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850370137] [2021-10-21 19:12:26,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:12:26,967 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:12:26,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:12:26,975 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:12:26,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:12:26,980 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:12:27,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:12:27,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:12:27,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:12:27,032 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. cyclomatic complexity: 10 Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2021-10-21 19:12:27,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:12:27,053 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2021-10-21 19:12:27,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:12:27,053 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 47 transitions. [2021-10-21 19:12:27,054 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 6 [2021-10-21 19:12:27,055 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 43 states and 47 transitions. [2021-10-21 19:12:27,055 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2021-10-21 19:12:27,055 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2021-10-21 19:12:27,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 47 transitions. [2021-10-21 19:12:27,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:12:27,056 INFO L681 BuchiCegarLoop]: Abstraction has 43 states and 47 transitions. [2021-10-21 19:12:27,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states and 47 transitions. [2021-10-21 19:12:27,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2021-10-21 19:12:27,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 39 states have (on average 1.1025641025641026) internal successors, (43), 38 states have internal predecessors, (43), 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) [2021-10-21 19:12:27,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2021-10-21 19:12:27,059 INFO L704 BuchiCegarLoop]: Abstraction has 39 states and 43 transitions. [2021-10-21 19:12:27,059 INFO L587 BuchiCegarLoop]: Abstraction has 39 states and 43 transitions. [2021-10-21 19:12:27,059 INFO L425 BuchiCegarLoop]: ======== Iteration 14============ [2021-10-21 19:12:27,059 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 39 states and 43 transitions. [2021-10-21 19:12:27,060 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 6 [2021-10-21 19:12:27,060 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:12:27,060 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:12:27,061 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:12:27,061 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-21 19:12:27,061 INFO L791 eck$LassoCheckResult]: Stem: 1488#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(10); 1489#L-1 havoc main_#res;havoc main_#t~nondet6, main_#t~post5, main_~i~1, main_#t~ret7, main_#t~mem8, main_#t~mem9, main_#t~ret10, main_#t~mem11, main_#t~mem13, main_#t~post12, main_~i~2, main_#t~ret14, main_~#x~0.base, main_~#x~0.offset, main_~temp~0, main_~ret~1, main_~ret2~0, main_~ret5~0;call main_~#x~0.base, main_~#x~0.offset := #Ultimate.allocOnStack(40);havoc main_~temp~0;havoc main_~ret~1;havoc main_~ret2~0;havoc main_~ret5~0;main_~i~1 := 0; 1498#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1501#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1502#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1507#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1524#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1523#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1522#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1521#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1520#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1519#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1518#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1517#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1516#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1515#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1514#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1513#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1512#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1511#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1510#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1509#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1508#L34-3 assume !(main_~i~1 < 10); 1490#L34-4 sum_#in~x.base, sum_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc sum_#res;havoc sum_#t~mem4, sum_#t~post3, sum_~x.base, sum_~x.offset, sum_~i~0, sum_~ret~0;sum_~x.base, sum_~x.offset := sum_#in~x.base, sum_#in~x.offset;havoc sum_~i~0;havoc sum_~ret~0;sum_~ret~0 := 0;sum_~i~0 := 0; 1491#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 1504#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 1505#L20-3 assume !(sum_~i~0 < 10); 1499#L20-4 sum_#res := (if sum_~ret~0 % 4294967296 <= 2147483647 then sum_~ret~0 % 4294967296 else sum_~ret~0 % 4294967296 - 4294967296); 1500#L23 main_#t~ret7 := sum_#res;main_~ret~1 := main_#t~ret7;havoc main_#t~ret7;call main_#t~mem8 := read~int(main_~#x~0.base, main_~#x~0.offset, 4);main_~temp~0 := main_#t~mem8;havoc main_#t~mem8;call main_#t~mem9 := read~int(main_~#x~0.base, 4 + main_~#x~0.offset, 4);call write~int(main_#t~mem9, main_~#x~0.base, main_~#x~0.offset, 4);havoc main_#t~mem9;call write~int(main_~temp~0, main_~#x~0.base, 4 + main_~#x~0.offset, 4);sum_#in~x.base, sum_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc sum_#res;havoc sum_#t~mem4, sum_#t~post3, sum_~x.base, sum_~x.offset, sum_~i~0, sum_~ret~0;sum_~x.base, sum_~x.offset := sum_#in~x.base, sum_#in~x.offset;havoc sum_~i~0;havoc sum_~ret~0;sum_~ret~0 := 0;sum_~i~0 := 0; 1496#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 1497#L20-7 [2021-10-21 19:12:27,062 INFO L793 eck$LassoCheckResult]: Loop: 1497#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 1506#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 1497#L20-7 [2021-10-21 19:12:27,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:12:27,062 INFO L82 PathProgramCache]: Analyzing trace with hash -1721709263, now seen corresponding path program 1 times [2021-10-21 19:12:27,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:12:27,063 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504785501] [2021-10-21 19:12:27,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:12:27,063 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:12:27,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:12:27,100 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-10-21 19:12:27,100 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:12:27,100 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504785501] [2021-10-21 19:12:27,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504785501] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:12:27,101 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247819583] [2021-10-21 19:12:27,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:12:27,101 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:12:27,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:12:27,102 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:12:27,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2021-10-21 19:12:27,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:12:27,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-21 19:12:27,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:12:27,359 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-10-21 19:12:27,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247819583] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:12:27,360 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:12:27,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-10-21 19:12:27,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872636398] [2021-10-21 19:12:27,360 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-21 19:12:27,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:12:27,361 INFO L82 PathProgramCache]: Analyzing trace with hash 2303, now seen corresponding path program 2 times [2021-10-21 19:12:27,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:12:27,361 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126267583] [2021-10-21 19:12:27,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:12:27,361 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:12:27,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:12:27,365 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:12:27,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:12:27,369 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:12:27,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:12:27,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:12:27,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:12:27,420 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. cyclomatic complexity: 9 Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:12:27,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:12:27,466 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2021-10-21 19:12:27,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:12:27,466 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 49 states and 53 transitions. [2021-10-21 19:12:27,467 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 6 [2021-10-21 19:12:27,467 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 49 states to 49 states and 53 transitions. [2021-10-21 19:12:27,467 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2021-10-21 19:12:27,468 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2021-10-21 19:12:27,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 53 transitions. [2021-10-21 19:12:27,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:12:27,468 INFO L681 BuchiCegarLoop]: Abstraction has 49 states and 53 transitions. [2021-10-21 19:12:27,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states and 53 transitions. [2021-10-21 19:12:27,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 43. [2021-10-21 19:12:27,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 43 states have (on average 1.0930232558139534) internal successors, (47), 42 states have internal predecessors, (47), 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) [2021-10-21 19:12:27,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2021-10-21 19:12:27,470 INFO L704 BuchiCegarLoop]: Abstraction has 43 states and 47 transitions. [2021-10-21 19:12:27,470 INFO L587 BuchiCegarLoop]: Abstraction has 43 states and 47 transitions. [2021-10-21 19:12:27,470 INFO L425 BuchiCegarLoop]: ======== Iteration 15============ [2021-10-21 19:12:27,471 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 43 states and 47 transitions. [2021-10-21 19:12:27,471 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 6 [2021-10-21 19:12:27,471 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:12:27,471 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:12:27,472 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:12:27,473 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-21 19:12:27,473 INFO L791 eck$LassoCheckResult]: Stem: 1669#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(10); 1670#L-1 havoc main_#res;havoc main_#t~nondet6, main_#t~post5, main_~i~1, main_#t~ret7, main_#t~mem8, main_#t~mem9, main_#t~ret10, main_#t~mem11, main_#t~mem13, main_#t~post12, main_~i~2, main_#t~ret14, main_~#x~0.base, main_~#x~0.offset, main_~temp~0, main_~ret~1, main_~ret2~0, main_~ret5~0;call main_~#x~0.base, main_~#x~0.offset := #Ultimate.allocOnStack(40);havoc main_~temp~0;havoc main_~ret~1;havoc main_~ret2~0;havoc main_~ret5~0;main_~i~1 := 0; 1681#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1684#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1685#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1692#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1711#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1710#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1709#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1708#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1707#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1706#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1705#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1704#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1703#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1702#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1701#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1700#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1699#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1698#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1697#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1696#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1695#L34-3 assume !(main_~i~1 < 10); 1673#L34-4 sum_#in~x.base, sum_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc sum_#res;havoc sum_#t~mem4, sum_#t~post3, sum_~x.base, sum_~x.offset, sum_~i~0, sum_~ret~0;sum_~x.base, sum_~x.offset := sum_#in~x.base, sum_#in~x.offset;havoc sum_~i~0;havoc sum_~ret~0;sum_~ret~0 := 0;sum_~i~0 := 0; 1674#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 1687#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 1688#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 1689#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 1694#L20-3 assume !(sum_~i~0 < 10); 1682#L20-4 sum_#res := (if sum_~ret~0 % 4294967296 <= 2147483647 then sum_~ret~0 % 4294967296 else sum_~ret~0 % 4294967296 - 4294967296); 1683#L23 main_#t~ret7 := sum_#res;main_~ret~1 := main_#t~ret7;havoc main_#t~ret7;call main_#t~mem8 := read~int(main_~#x~0.base, main_~#x~0.offset, 4);main_~temp~0 := main_#t~mem8;havoc main_#t~mem8;call main_#t~mem9 := read~int(main_~#x~0.base, 4 + main_~#x~0.offset, 4);call write~int(main_#t~mem9, main_~#x~0.base, main_~#x~0.offset, 4);havoc main_#t~mem9;call write~int(main_~temp~0, main_~#x~0.base, 4 + main_~#x~0.offset, 4);sum_#in~x.base, sum_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc sum_#res;havoc sum_#t~mem4, sum_#t~post3, sum_~x.base, sum_~x.offset, sum_~i~0, sum_~ret~0;sum_~x.base, sum_~x.offset := sum_#in~x.base, sum_#in~x.offset;havoc sum_~i~0;havoc sum_~ret~0;sum_~ret~0 := 0;sum_~i~0 := 0; 1690#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 1691#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 1679#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 1680#L20-7 [2021-10-21 19:12:27,473 INFO L793 eck$LassoCheckResult]: Loop: 1680#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 1693#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 1680#L20-7 [2021-10-21 19:12:27,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:12:27,474 INFO L82 PathProgramCache]: Analyzing trace with hash 528482161, now seen corresponding path program 1 times [2021-10-21 19:12:27,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:12:27,474 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759303049] [2021-10-21 19:12:27,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:12:27,475 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:12:27,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:12:27,520 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2021-10-21 19:12:27,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:12:27,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759303049] [2021-10-21 19:12:27,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759303049] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:12:27,521 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972803257] [2021-10-21 19:12:27,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:12:27,521 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:12:27,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:12:27,523 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:12:27,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2021-10-21 19:12:27,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:12:27,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 19:12:27,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:12:27,790 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Forceful destruction successful, exit code 0 [2021-10-21 19:12:27,815 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2021-10-21 19:12:27,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972803257] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:12:27,816 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:12:27,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-10-21 19:12:27,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000602382] [2021-10-21 19:12:27,817 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-21 19:12:27,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:12:27,817 INFO L82 PathProgramCache]: Analyzing trace with hash 2303, now seen corresponding path program 3 times [2021-10-21 19:12:27,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:12:27,817 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325688039] [2021-10-21 19:12:27,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:12:27,819 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:12:27,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:12:27,826 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:12:27,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:12:27,829 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:12:27,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:12:27,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:12:27,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:12:27,881 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. cyclomatic complexity: 9 Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 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) [2021-10-21 19:12:27,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:12:27,934 INFO L93 Difference]: Finished difference Result 55 states and 59 transitions. [2021-10-21 19:12:27,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:12:27,935 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 55 states and 59 transitions. [2021-10-21 19:12:27,935 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 6 [2021-10-21 19:12:27,936 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 55 states to 55 states and 59 transitions. [2021-10-21 19:12:27,936 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 28 [2021-10-21 19:12:27,938 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2021-10-21 19:12:27,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 59 transitions. [2021-10-21 19:12:27,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:12:27,938 INFO L681 BuchiCegarLoop]: Abstraction has 55 states and 59 transitions. [2021-10-21 19:12:27,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states and 59 transitions. [2021-10-21 19:12:27,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 47. [2021-10-21 19:12:27,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 47 states have (on average 1.0851063829787233) internal successors, (51), 46 states have internal predecessors, (51), 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) [2021-10-21 19:12:27,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2021-10-21 19:12:27,942 INFO L704 BuchiCegarLoop]: Abstraction has 47 states and 51 transitions. [2021-10-21 19:12:27,942 INFO L587 BuchiCegarLoop]: Abstraction has 47 states and 51 transitions. [2021-10-21 19:12:27,942 INFO L425 BuchiCegarLoop]: ======== Iteration 16============ [2021-10-21 19:12:27,942 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 47 states and 51 transitions. [2021-10-21 19:12:27,943 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 6 [2021-10-21 19:12:27,943 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:12:27,943 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:12:27,949 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [10, 10, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:12:27,949 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-21 19:12:27,950 INFO L791 eck$LassoCheckResult]: Stem: 1875#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(10); 1876#L-1 havoc main_#res;havoc main_#t~nondet6, main_#t~post5, main_~i~1, main_#t~ret7, main_#t~mem8, main_#t~mem9, main_#t~ret10, main_#t~mem11, main_#t~mem13, main_#t~post12, main_~i~2, main_#t~ret14, main_~#x~0.base, main_~#x~0.offset, main_~temp~0, main_~ret~1, main_~ret2~0, main_~ret5~0;call main_~#x~0.base, main_~#x~0.offset := #Ultimate.allocOnStack(40);havoc main_~temp~0;havoc main_~ret~1;havoc main_~ret2~0;havoc main_~ret5~0;main_~i~1 := 0; 1887#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1890#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1891#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1899#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1918#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1917#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1916#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1915#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1914#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1913#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1912#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1911#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1910#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1909#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1908#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1907#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1906#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1905#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1904#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 1903#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 1902#L34-3 assume !(main_~i~1 < 10); 1879#L34-4 sum_#in~x.base, sum_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc sum_#res;havoc sum_#t~mem4, sum_#t~post3, sum_~x.base, sum_~x.offset, sum_~i~0, sum_~ret~0;sum_~x.base, sum_~x.offset := sum_#in~x.base, sum_#in~x.offset;havoc sum_~i~0;havoc sum_~ret~0;sum_~ret~0 := 0;sum_~i~0 := 0; 1880#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 1893#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 1921#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 1896#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 1894#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 1895#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 1901#L20-3 assume !(sum_~i~0 < 10); 1888#L20-4 sum_#res := (if sum_~ret~0 % 4294967296 <= 2147483647 then sum_~ret~0 % 4294967296 else sum_~ret~0 % 4294967296 - 4294967296); 1889#L23 main_#t~ret7 := sum_#res;main_~ret~1 := main_#t~ret7;havoc main_#t~ret7;call main_#t~mem8 := read~int(main_~#x~0.base, main_~#x~0.offset, 4);main_~temp~0 := main_#t~mem8;havoc main_#t~mem8;call main_#t~mem9 := read~int(main_~#x~0.base, 4 + main_~#x~0.offset, 4);call write~int(main_#t~mem9, main_~#x~0.base, main_~#x~0.offset, 4);havoc main_#t~mem9;call write~int(main_~temp~0, main_~#x~0.base, 4 + main_~#x~0.offset, 4);sum_#in~x.base, sum_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc sum_#res;havoc sum_#t~mem4, sum_#t~post3, sum_~x.base, sum_~x.offset, sum_~i~0, sum_~ret~0;sum_~x.base, sum_~x.offset := sum_#in~x.base, sum_#in~x.offset;havoc sum_~i~0;havoc sum_~ret~0;sum_~ret~0 := 0;sum_~i~0 := 0; 1897#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 1919#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 1920#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 1898#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 1885#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 1886#L20-7 [2021-10-21 19:12:27,950 INFO L793 eck$LassoCheckResult]: Loop: 1886#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 1900#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 1886#L20-7 [2021-10-21 19:12:27,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:12:27,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1101320015, now seen corresponding path program 2 times [2021-10-21 19:12:27,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:12:27,951 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787004906] [2021-10-21 19:12:27,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:12:27,951 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:12:27,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:12:28,023 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-10-21 19:12:28,023 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:12:28,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787004906] [2021-10-21 19:12:28,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787004906] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:12:28,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448649537] [2021-10-21 19:12:28,024 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:12:28,025 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:12:28,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:12:28,030 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:12:28,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2021-10-21 19:12:28,210 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:12:28,211 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:12:28,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-21 19:12:28,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:12:28,330 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-10-21 19:12:28,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448649537] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:12:28,330 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:12:28,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2021-10-21 19:12:28,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973495542] [2021-10-21 19:12:28,331 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-21 19:12:28,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:12:28,331 INFO L82 PathProgramCache]: Analyzing trace with hash 2303, now seen corresponding path program 4 times [2021-10-21 19:12:28,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:12:28,331 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533238588] [2021-10-21 19:12:28,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:12:28,332 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:12:28,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:12:28,335 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:12:28,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:12:28,339 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:12:28,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:12:28,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:12:28,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:12:28,387 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. cyclomatic complexity: 9 Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 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) [2021-10-21 19:12:28,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:12:28,456 INFO L93 Difference]: Finished difference Result 61 states and 65 transitions. [2021-10-21 19:12:28,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 19:12:28,457 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 61 states and 65 transitions. [2021-10-21 19:12:28,457 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 6 [2021-10-21 19:12:28,458 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 61 states to 61 states and 65 transitions. [2021-10-21 19:12:28,458 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 32 [2021-10-21 19:12:28,458 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 32 [2021-10-21 19:12:28,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 65 transitions. [2021-10-21 19:12:28,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:12:28,459 INFO L681 BuchiCegarLoop]: Abstraction has 61 states and 65 transitions. [2021-10-21 19:12:28,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states and 65 transitions. [2021-10-21 19:12:28,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 51. [2021-10-21 19:12:28,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 51 states have (on average 1.0784313725490196) internal successors, (55), 50 states have internal predecessors, (55), 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) [2021-10-21 19:12:28,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2021-10-21 19:12:28,462 INFO L704 BuchiCegarLoop]: Abstraction has 51 states and 55 transitions. [2021-10-21 19:12:28,462 INFO L587 BuchiCegarLoop]: Abstraction has 51 states and 55 transitions. [2021-10-21 19:12:28,462 INFO L425 BuchiCegarLoop]: ======== Iteration 17============ [2021-10-21 19:12:28,462 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 51 states and 55 transitions. [2021-10-21 19:12:28,463 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 6 [2021-10-21 19:12:28,463 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:12:28,463 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:12:28,464 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [10, 10, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:12:28,464 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-21 19:12:28,465 INFO L791 eck$LassoCheckResult]: Stem: 2106#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(10); 2107#L-1 havoc main_#res;havoc main_#t~nondet6, main_#t~post5, main_~i~1, main_#t~ret7, main_#t~mem8, main_#t~mem9, main_#t~ret10, main_#t~mem11, main_#t~mem13, main_#t~post12, main_~i~2, main_#t~ret14, main_~#x~0.base, main_~#x~0.offset, main_~temp~0, main_~ret~1, main_~ret2~0, main_~ret5~0;call main_~#x~0.base, main_~#x~0.offset := #Ultimate.allocOnStack(40);havoc main_~temp~0;havoc main_~ret~1;havoc main_~ret2~0;havoc main_~ret5~0;main_~i~1 := 0; 2116#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 2119#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 2120#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 2127#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 2148#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 2147#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 2146#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 2145#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 2144#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 2143#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 2142#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 2141#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 2140#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 2139#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 2138#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 2137#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 2136#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 2135#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 2134#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 2133#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 2132#L34-3 assume !(main_~i~1 < 10); 2108#L34-4 sum_#in~x.base, sum_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc sum_#res;havoc sum_#t~mem4, sum_#t~post3, sum_~x.base, sum_~x.offset, sum_~i~0, sum_~ret~0;sum_~x.base, sum_~x.offset := sum_#in~x.base, sum_#in~x.offset;havoc sum_~i~0;havoc sum_~ret~0;sum_~ret~0 := 0;sum_~i~0 := 0; 2109#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2122#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2123#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2124#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2154#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2153#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2152#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2131#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2130#L20-3 assume !(sum_~i~0 < 10); 2117#L20-4 sum_#res := (if sum_~ret~0 % 4294967296 <= 2147483647 then sum_~ret~0 % 4294967296 else sum_~ret~0 % 4294967296 - 4294967296); 2118#L23 main_#t~ret7 := sum_#res;main_~ret~1 := main_#t~ret7;havoc main_#t~ret7;call main_#t~mem8 := read~int(main_~#x~0.base, main_~#x~0.offset, 4);main_~temp~0 := main_#t~mem8;havoc main_#t~mem8;call main_#t~mem9 := read~int(main_~#x~0.base, 4 + main_~#x~0.offset, 4);call write~int(main_#t~mem9, main_~#x~0.base, main_~#x~0.offset, 4);havoc main_#t~mem9;call write~int(main_~temp~0, main_~#x~0.base, 4 + main_~#x~0.offset, 4);sum_#in~x.base, sum_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc sum_#res;havoc sum_#t~mem4, sum_#t~post3, sum_~x.base, sum_~x.offset, sum_~i~0, sum_~ret~0;sum_~x.base, sum_~x.offset := sum_#in~x.base, sum_#in~x.offset;havoc sum_~i~0;havoc sum_~ret~0;sum_~ret~0 := 0;sum_~i~0 := 0; 2125#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2126#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2114#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2115#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2151#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2150#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2149#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2129#L20-7 [2021-10-21 19:12:28,465 INFO L793 eck$LassoCheckResult]: Loop: 2129#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2128#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2129#L20-7 [2021-10-21 19:12:28,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:12:28,466 INFO L82 PathProgramCache]: Analyzing trace with hash 512696561, now seen corresponding path program 3 times [2021-10-21 19:12:28,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:12:28,466 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302602270] [2021-10-21 19:12:28,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:12:28,466 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:12:28,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:12:28,534 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2021-10-21 19:12:28,534 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:12:28,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302602270] [2021-10-21 19:12:28,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302602270] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:12:28,535 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44020549] [2021-10-21 19:12:28,535 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 19:12:28,535 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:12:28,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:12:28,541 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:12:28,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2021-10-21 19:12:28,733 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-21 19:12:28,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:12:28,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-21 19:12:28,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:12:28,906 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2021-10-21 19:12:28,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44020549] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:12:28,906 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:12:28,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2021-10-21 19:12:28,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513500677] [2021-10-21 19:12:28,907 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-21 19:12:28,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:12:28,908 INFO L82 PathProgramCache]: Analyzing trace with hash 2303, now seen corresponding path program 5 times [2021-10-21 19:12:28,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:12:28,908 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121910155] [2021-10-21 19:12:28,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:12:28,909 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:12:28,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:12:28,914 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:12:28,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:12:28,922 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:12:28,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:12:28,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 19:12:28,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:12:28,971 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. cyclomatic complexity: 9 Second operand has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 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) [2021-10-21 19:12:29,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:12:29,068 INFO L93 Difference]: Finished difference Result 67 states and 71 transitions. [2021-10-21 19:12:29,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 19:12:29,069 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 67 states and 71 transitions. [2021-10-21 19:12:29,070 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 6 [2021-10-21 19:12:29,070 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 67 states to 67 states and 71 transitions. [2021-10-21 19:12:29,071 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 36 [2021-10-21 19:12:29,071 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2021-10-21 19:12:29,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 67 states and 71 transitions. [2021-10-21 19:12:29,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:12:29,071 INFO L681 BuchiCegarLoop]: Abstraction has 67 states and 71 transitions. [2021-10-21 19:12:29,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states and 71 transitions. [2021-10-21 19:12:29,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 55. [2021-10-21 19:12:29,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 55 states have (on average 1.0727272727272728) internal successors, (59), 54 states have internal predecessors, (59), 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) [2021-10-21 19:12:29,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2021-10-21 19:12:29,074 INFO L704 BuchiCegarLoop]: Abstraction has 55 states and 59 transitions. [2021-10-21 19:12:29,074 INFO L587 BuchiCegarLoop]: Abstraction has 55 states and 59 transitions. [2021-10-21 19:12:29,074 INFO L425 BuchiCegarLoop]: ======== Iteration 18============ [2021-10-21 19:12:29,074 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 55 states and 59 transitions. [2021-10-21 19:12:29,075 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 6 [2021-10-21 19:12:29,075 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:12:29,075 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:12:29,076 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [10, 10, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:12:29,076 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-21 19:12:29,076 INFO L791 eck$LassoCheckResult]: Stem: 2358#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(10); 2359#L-1 havoc main_#res;havoc main_#t~nondet6, main_#t~post5, main_~i~1, main_#t~ret7, main_#t~mem8, main_#t~mem9, main_#t~ret10, main_#t~mem11, main_#t~mem13, main_#t~post12, main_~i~2, main_#t~ret14, main_~#x~0.base, main_~#x~0.offset, main_~temp~0, main_~ret~1, main_~ret2~0, main_~ret5~0;call main_~#x~0.base, main_~#x~0.offset := #Ultimate.allocOnStack(40);havoc main_~temp~0;havoc main_~ret~1;havoc main_~ret2~0;havoc main_~ret5~0;main_~i~1 := 0; 2368#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 2371#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 2372#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 2379#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 2400#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 2399#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 2398#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 2397#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 2396#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 2395#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 2394#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 2393#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 2392#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 2391#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 2390#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 2389#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 2388#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 2387#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 2386#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 2385#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 2384#L34-3 assume !(main_~i~1 < 10); 2360#L34-4 sum_#in~x.base, sum_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc sum_#res;havoc sum_#t~mem4, sum_#t~post3, sum_~x.base, sum_~x.offset, sum_~i~0, sum_~ret~0;sum_~x.base, sum_~x.offset := sum_#in~x.base, sum_#in~x.offset;havoc sum_~i~0;havoc sum_~ret~0;sum_~ret~0 := 0;sum_~i~0 := 0; 2361#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2374#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2375#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2376#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2410#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2409#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2408#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2407#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2406#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2383#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2382#L20-3 assume !(sum_~i~0 < 10); 2369#L20-4 sum_#res := (if sum_~ret~0 % 4294967296 <= 2147483647 then sum_~ret~0 % 4294967296 else sum_~ret~0 % 4294967296 - 4294967296); 2370#L23 main_#t~ret7 := sum_#res;main_~ret~1 := main_#t~ret7;havoc main_#t~ret7;call main_#t~mem8 := read~int(main_~#x~0.base, main_~#x~0.offset, 4);main_~temp~0 := main_#t~mem8;havoc main_#t~mem8;call main_#t~mem9 := read~int(main_~#x~0.base, 4 + main_~#x~0.offset, 4);call write~int(main_#t~mem9, main_~#x~0.base, main_~#x~0.offset, 4);havoc main_#t~mem9;call write~int(main_~temp~0, main_~#x~0.base, 4 + main_~#x~0.offset, 4);sum_#in~x.base, sum_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc sum_#res;havoc sum_#t~mem4, sum_#t~post3, sum_~x.base, sum_~x.offset, sum_~i~0, sum_~ret~0;sum_~x.base, sum_~x.offset := sum_#in~x.base, sum_#in~x.offset;havoc sum_~i~0;havoc sum_~ret~0;sum_~ret~0 := 0;sum_~i~0 := 0; 2377#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2378#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2366#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2367#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2405#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2404#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2403#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2402#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2401#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2381#L20-7 [2021-10-21 19:12:29,076 INFO L793 eck$LassoCheckResult]: Loop: 2381#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2380#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2381#L20-7 [2021-10-21 19:12:29,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:12:29,077 INFO L82 PathProgramCache]: Analyzing trace with hash 1883803697, now seen corresponding path program 4 times [2021-10-21 19:12:29,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:12:29,080 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811212173] [2021-10-21 19:12:29,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:12:29,081 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:12:29,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:12:29,189 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2021-10-21 19:12:29,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:12:29,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811212173] [2021-10-21 19:12:29,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811212173] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:12:29,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652147710] [2021-10-21 19:12:29,190 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-21 19:12:29,191 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:12:29,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:12:29,193 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:12:29,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2021-10-21 19:12:29,389 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-21 19:12:29,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:12:29,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 19:12:29,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:12:29,562 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2021-10-21 19:12:29,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652147710] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:12:29,563 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:12:29,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2021-10-21 19:12:29,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679622582] [2021-10-21 19:12:29,565 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-21 19:12:29,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:12:29,565 INFO L82 PathProgramCache]: Analyzing trace with hash 2303, now seen corresponding path program 6 times [2021-10-21 19:12:29,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:12:29,566 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968677575] [2021-10-21 19:12:29,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:12:29,566 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:12:29,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:12:29,572 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:12:29,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:12:29,576 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:12:29,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:12:29,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-21 19:12:29,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:12:29,633 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. cyclomatic complexity: 9 Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 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) [2021-10-21 19:12:29,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:12:29,726 INFO L93 Difference]: Finished difference Result 73 states and 77 transitions. [2021-10-21 19:12:29,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 19:12:29,726 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 73 states and 77 transitions. [2021-10-21 19:12:29,727 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 6 [2021-10-21 19:12:29,728 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 73 states to 73 states and 77 transitions. [2021-10-21 19:12:29,728 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 40 [2021-10-21 19:12:29,728 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 40 [2021-10-21 19:12:29,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 73 states and 77 transitions. [2021-10-21 19:12:29,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:12:29,729 INFO L681 BuchiCegarLoop]: Abstraction has 73 states and 77 transitions. [2021-10-21 19:12:29,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states and 77 transitions. [2021-10-21 19:12:29,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 59. [2021-10-21 19:12:29,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 59 states have (on average 1.0677966101694916) internal successors, (63), 58 states have internal predecessors, (63), 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) [2021-10-21 19:12:29,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2021-10-21 19:12:29,731 INFO L704 BuchiCegarLoop]: Abstraction has 59 states and 63 transitions. [2021-10-21 19:12:29,732 INFO L587 BuchiCegarLoop]: Abstraction has 59 states and 63 transitions. [2021-10-21 19:12:29,732 INFO L425 BuchiCegarLoop]: ======== Iteration 19============ [2021-10-21 19:12:29,732 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 59 states and 63 transitions. [2021-10-21 19:12:29,733 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 6 [2021-10-21 19:12:29,733 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:12:29,733 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:12:29,737 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [10, 10, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:12:29,744 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-21 19:12:29,744 INFO L791 eck$LassoCheckResult]: Stem: 2633#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(10); 2634#L-1 havoc main_#res;havoc main_#t~nondet6, main_#t~post5, main_~i~1, main_#t~ret7, main_#t~mem8, main_#t~mem9, main_#t~ret10, main_#t~mem11, main_#t~mem13, main_#t~post12, main_~i~2, main_#t~ret14, main_~#x~0.base, main_~#x~0.offset, main_~temp~0, main_~ret~1, main_~ret2~0, main_~ret5~0;call main_~#x~0.base, main_~#x~0.offset := #Ultimate.allocOnStack(40);havoc main_~temp~0;havoc main_~ret~1;havoc main_~ret2~0;havoc main_~ret5~0;main_~i~1 := 0; 2643#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 2646#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 2647#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 2654#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 2675#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 2674#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 2673#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 2672#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 2671#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 2670#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 2669#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 2668#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 2667#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 2666#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 2665#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 2664#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 2663#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 2662#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 2661#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 2660#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 2659#L34-3 assume !(main_~i~1 < 10); 2635#L34-4 sum_#in~x.base, sum_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc sum_#res;havoc sum_#t~mem4, sum_#t~post3, sum_~x.base, sum_~x.offset, sum_~i~0, sum_~ret~0;sum_~x.base, sum_~x.offset := sum_#in~x.base, sum_#in~x.offset;havoc sum_~i~0;havoc sum_~ret~0;sum_~ret~0 := 0;sum_~i~0 := 0; 2636#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2649#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2650#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2651#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2689#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2688#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2687#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2686#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2685#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2684#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2683#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2658#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2657#L20-3 assume !(sum_~i~0 < 10); 2644#L20-4 sum_#res := (if sum_~ret~0 % 4294967296 <= 2147483647 then sum_~ret~0 % 4294967296 else sum_~ret~0 % 4294967296 - 4294967296); 2645#L23 main_#t~ret7 := sum_#res;main_~ret~1 := main_#t~ret7;havoc main_#t~ret7;call main_#t~mem8 := read~int(main_~#x~0.base, main_~#x~0.offset, 4);main_~temp~0 := main_#t~mem8;havoc main_#t~mem8;call main_#t~mem9 := read~int(main_~#x~0.base, 4 + main_~#x~0.offset, 4);call write~int(main_#t~mem9, main_~#x~0.base, main_~#x~0.offset, 4);havoc main_#t~mem9;call write~int(main_~temp~0, main_~#x~0.base, 4 + main_~#x~0.offset, 4);sum_#in~x.base, sum_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc sum_#res;havoc sum_#t~mem4, sum_#t~post3, sum_~x.base, sum_~x.offset, sum_~i~0, sum_~ret~0;sum_~x.base, sum_~x.offset := sum_#in~x.base, sum_#in~x.offset;havoc sum_~i~0;havoc sum_~ret~0;sum_~ret~0 := 0;sum_~i~0 := 0; 2652#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2653#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2641#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2642#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2682#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2681#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2680#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2679#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2678#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2677#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2676#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2656#L20-7 [2021-10-21 19:12:29,744 INFO L793 eck$LassoCheckResult]: Loop: 2656#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2655#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2656#L20-7 [2021-10-21 19:12:29,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:12:29,744 INFO L82 PathProgramCache]: Analyzing trace with hash -414957967, now seen corresponding path program 5 times [2021-10-21 19:12:29,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:12:29,745 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27212570] [2021-10-21 19:12:29,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:12:29,745 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:12:29,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:12:29,840 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2021-10-21 19:12:29,840 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:12:29,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27212570] [2021-10-21 19:12:29,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27212570] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:12:29,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572668195] [2021-10-21 19:12:29,841 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-21 19:12:29,842 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:12:29,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:12:29,846 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:12:29,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2021-10-21 19:12:30,156 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-10-21 19:12:30,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:12:30,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-21 19:12:30,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:12:30,311 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2021-10-21 19:12:30,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572668195] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:12:30,312 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:12:30,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2021-10-21 19:12:30,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750989063] [2021-10-21 19:12:30,312 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-21 19:12:30,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:12:30,313 INFO L82 PathProgramCache]: Analyzing trace with hash 2303, now seen corresponding path program 7 times [2021-10-21 19:12:30,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:12:30,313 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763603647] [2021-10-21 19:12:30,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:12:30,313 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:12:30,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:12:30,317 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:12:30,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:12:30,321 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:12:30,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:12:30,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 19:12:30,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-10-21 19:12:30,374 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. cyclomatic complexity: 9 Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 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) [2021-10-21 19:12:30,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:12:30,478 INFO L93 Difference]: Finished difference Result 79 states and 83 transitions. [2021-10-21 19:12:30,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 19:12:30,478 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 79 states and 83 transitions. [2021-10-21 19:12:30,479 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 6 [2021-10-21 19:12:30,480 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 79 states to 79 states and 83 transitions. [2021-10-21 19:12:30,480 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 44 [2021-10-21 19:12:30,481 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 44 [2021-10-21 19:12:30,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 79 states and 83 transitions. [2021-10-21 19:12:30,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:12:30,481 INFO L681 BuchiCegarLoop]: Abstraction has 79 states and 83 transitions. [2021-10-21 19:12:30,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states and 83 transitions. [2021-10-21 19:12:30,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 63. [2021-10-21 19:12:30,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 63 states have (on average 1.0634920634920635) internal successors, (67), 62 states have internal predecessors, (67), 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) [2021-10-21 19:12:30,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2021-10-21 19:12:30,485 INFO L704 BuchiCegarLoop]: Abstraction has 63 states and 67 transitions. [2021-10-21 19:12:30,485 INFO L587 BuchiCegarLoop]: Abstraction has 63 states and 67 transitions. [2021-10-21 19:12:30,485 INFO L425 BuchiCegarLoop]: ======== Iteration 20============ [2021-10-21 19:12:30,485 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 63 states and 67 transitions. [2021-10-21 19:12:30,486 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 6 [2021-10-21 19:12:30,486 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:12:30,486 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:12:30,487 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [10, 10, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:12:30,487 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-21 19:12:30,487 INFO L791 eck$LassoCheckResult]: Stem: 2929#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(10); 2930#L-1 havoc main_#res;havoc main_#t~nondet6, main_#t~post5, main_~i~1, main_#t~ret7, main_#t~mem8, main_#t~mem9, main_#t~ret10, main_#t~mem11, main_#t~mem13, main_#t~post12, main_~i~2, main_#t~ret14, main_~#x~0.base, main_~#x~0.offset, main_~temp~0, main_~ret~1, main_~ret2~0, main_~ret5~0;call main_~#x~0.base, main_~#x~0.offset := #Ultimate.allocOnStack(40);havoc main_~temp~0;havoc main_~ret~1;havoc main_~ret2~0;havoc main_~ret5~0;main_~i~1 := 0; 2941#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 2944#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 2945#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 2951#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 2972#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 2971#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 2970#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 2969#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 2968#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 2967#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 2966#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 2965#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 2964#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 2963#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 2962#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 2961#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 2960#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 2959#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 2958#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 2957#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 2956#L34-3 assume !(main_~i~1 < 10); 2933#L34-4 sum_#in~x.base, sum_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc sum_#res;havoc sum_#t~mem4, sum_#t~post3, sum_~x.base, sum_~x.offset, sum_~i~0, sum_~ret~0;sum_~x.base, sum_~x.offset := sum_#in~x.base, sum_#in~x.offset;havoc sum_~i~0;havoc sum_~ret~0;sum_~ret~0 := 0;sum_~i~0 := 0; 2934#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2947#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2948#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2949#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2991#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2990#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2989#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2987#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2985#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2983#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2981#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2979#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2977#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2955#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2954#L20-3 assume !(sum_~i~0 < 10); 2942#L20-4 sum_#res := (if sum_~ret~0 % 4294967296 <= 2147483647 then sum_~ret~0 % 4294967296 else sum_~ret~0 % 4294967296 - 4294967296); 2943#L23 main_#t~ret7 := sum_#res;main_~ret~1 := main_#t~ret7;havoc main_#t~ret7;call main_#t~mem8 := read~int(main_~#x~0.base, main_~#x~0.offset, 4);main_~temp~0 := main_#t~mem8;havoc main_#t~mem8;call main_#t~mem9 := read~int(main_~#x~0.base, 4 + main_~#x~0.offset, 4);call write~int(main_#t~mem9, main_~#x~0.base, main_~#x~0.offset, 4);havoc main_#t~mem9;call write~int(main_~temp~0, main_~#x~0.base, 4 + main_~#x~0.offset, 4);sum_#in~x.base, sum_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc sum_#res;havoc sum_#t~mem4, sum_#t~post3, sum_~x.base, sum_~x.offset, sum_~i~0, sum_~ret~0;sum_~x.base, sum_~x.offset := sum_#in~x.base, sum_#in~x.offset;havoc sum_~i~0;havoc sum_~ret~0;sum_~ret~0 := 0;sum_~i~0 := 0; 2939#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2940#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2950#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2988#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2986#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2984#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2982#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2980#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2978#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2976#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2975#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2974#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2973#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2953#L20-7 [2021-10-21 19:12:30,488 INFO L793 eck$LassoCheckResult]: Loop: 2953#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 2952#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 2953#L20-7 [2021-10-21 19:12:30,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:12:30,488 INFO L82 PathProgramCache]: Analyzing trace with hash 919530417, now seen corresponding path program 6 times [2021-10-21 19:12:30,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:12:30,489 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647575808] [2021-10-21 19:12:30,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:12:30,489 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:12:30,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:12:30,587 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-21 19:12:30,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:12:30,587 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647575808] [2021-10-21 19:12:30,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647575808] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:12:30,588 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585200352] [2021-10-21 19:12:30,588 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-21 19:12:30,588 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:12:30,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:12:30,593 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:12:30,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2021-10-21 19:12:31,185 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2021-10-21 19:12:31,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:12:31,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-21 19:12:31,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:12:31,422 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 19 proven. 49 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2021-10-21 19:12:31,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1585200352] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:12:31,422 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:12:31,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 13 [2021-10-21 19:12:31,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374084922] [2021-10-21 19:12:31,423 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-21 19:12:31,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:12:31,424 INFO L82 PathProgramCache]: Analyzing trace with hash 2303, now seen corresponding path program 8 times [2021-10-21 19:12:31,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:12:31,424 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759471552] [2021-10-21 19:12:31,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:12:31,425 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:12:31,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:12:31,430 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:12:31,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:12:31,432 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:12:31,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:12:31,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-21 19:12:31,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2021-10-21 19:12:31,481 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. cyclomatic complexity: 9 Second operand has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 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) [2021-10-21 19:12:31,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:12:31,702 INFO L93 Difference]: Finished difference Result 85 states and 89 transitions. [2021-10-21 19:12:31,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-21 19:12:31,702 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 85 states and 89 transitions. [2021-10-21 19:12:31,703 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 6 [2021-10-21 19:12:31,704 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 85 states to 85 states and 89 transitions. [2021-10-21 19:12:31,704 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 48 [2021-10-21 19:12:31,704 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 48 [2021-10-21 19:12:31,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 85 states and 89 transitions. [2021-10-21 19:12:31,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:12:31,704 INFO L681 BuchiCegarLoop]: Abstraction has 85 states and 89 transitions. [2021-10-21 19:12:31,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states and 89 transitions. [2021-10-21 19:12:31,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 67. [2021-10-21 19:12:31,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 67 states have (on average 1.0597014925373134) internal successors, (71), 66 states have internal predecessors, (71), 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) [2021-10-21 19:12:31,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2021-10-21 19:12:31,707 INFO L704 BuchiCegarLoop]: Abstraction has 67 states and 71 transitions. [2021-10-21 19:12:31,707 INFO L587 BuchiCegarLoop]: Abstraction has 67 states and 71 transitions. [2021-10-21 19:12:31,707 INFO L425 BuchiCegarLoop]: ======== Iteration 21============ [2021-10-21 19:12:31,707 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 67 states and 71 transitions. [2021-10-21 19:12:31,708 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 6 [2021-10-21 19:12:31,708 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:12:31,708 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:12:31,709 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [10, 10, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:12:31,709 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-21 19:12:31,710 INFO L791 eck$LassoCheckResult]: Stem: 3270#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(10); 3271#L-1 havoc main_#res;havoc main_#t~nondet6, main_#t~post5, main_~i~1, main_#t~ret7, main_#t~mem8, main_#t~mem9, main_#t~ret10, main_#t~mem11, main_#t~mem13, main_#t~post12, main_~i~2, main_#t~ret14, main_~#x~0.base, main_~#x~0.offset, main_~temp~0, main_~ret~1, main_~ret2~0, main_~ret5~0;call main_~#x~0.base, main_~#x~0.offset := #Ultimate.allocOnStack(40);havoc main_~temp~0;havoc main_~ret~1;havoc main_~ret2~0;havoc main_~ret5~0;main_~i~1 := 0; 3280#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 3283#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 3284#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 3291#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 3312#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 3311#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 3310#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 3309#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 3308#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 3307#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 3306#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 3305#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 3304#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 3303#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 3302#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 3301#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 3300#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 3299#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 3298#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 3297#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 3296#L34-3 assume !(main_~i~1 < 10); 3272#L34-4 sum_#in~x.base, sum_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc sum_#res;havoc sum_#t~mem4, sum_#t~post3, sum_~x.base, sum_~x.offset, sum_~i~0, sum_~ret~0;sum_~x.base, sum_~x.offset := sum_#in~x.base, sum_#in~x.offset;havoc sum_~i~0;havoc sum_~ret~0;sum_~ret~0 := 0;sum_~i~0 := 0; 3273#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 3286#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 3287#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 3288#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 3334#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 3333#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 3332#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 3331#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 3330#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 3329#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 3328#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 3327#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 3326#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 3325#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 3324#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 3295#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 3294#L20-3 assume !(sum_~i~0 < 10); 3281#L20-4 sum_#res := (if sum_~ret~0 % 4294967296 <= 2147483647 then sum_~ret~0 % 4294967296 else sum_~ret~0 % 4294967296 - 4294967296); 3282#L23 main_#t~ret7 := sum_#res;main_~ret~1 := main_#t~ret7;havoc main_#t~ret7;call main_#t~mem8 := read~int(main_~#x~0.base, main_~#x~0.offset, 4);main_~temp~0 := main_#t~mem8;havoc main_#t~mem8;call main_#t~mem9 := read~int(main_~#x~0.base, 4 + main_~#x~0.offset, 4);call write~int(main_#t~mem9, main_~#x~0.base, main_~#x~0.offset, 4);havoc main_#t~mem9;call write~int(main_~temp~0, main_~#x~0.base, 4 + main_~#x~0.offset, 4);sum_#in~x.base, sum_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc sum_#res;havoc sum_#t~mem4, sum_#t~post3, sum_~x.base, sum_~x.offset, sum_~i~0, sum_~ret~0;sum_~x.base, sum_~x.offset := sum_#in~x.base, sum_#in~x.offset;havoc sum_~i~0;havoc sum_~ret~0;sum_~ret~0 := 0;sum_~i~0 := 0; 3289#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 3290#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 3278#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 3279#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 3323#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 3322#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 3321#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 3320#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 3319#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 3318#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 3317#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 3316#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 3315#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 3314#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 3313#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 3293#L20-7 [2021-10-21 19:12:31,710 INFO L793 eck$LassoCheckResult]: Loop: 3293#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 3292#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 3293#L20-7 [2021-10-21 19:12:31,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:12:31,711 INFO L82 PathProgramCache]: Analyzing trace with hash 231036913, now seen corresponding path program 7 times [2021-10-21 19:12:31,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:12:31,711 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159356328] [2021-10-21 19:12:31,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:12:31,712 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:12:31,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:12:31,842 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2021-10-21 19:12:31,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:12:31,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159356328] [2021-10-21 19:12:31,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159356328] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:12:31,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941187488] [2021-10-21 19:12:31,843 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-21 19:12:31,843 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:12:31,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:12:31,859 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:12:31,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2021-10-21 19:12:32,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:12:32,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-21 19:12:32,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:12:32,320 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2021-10-21 19:12:32,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941187488] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:12:32,320 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:12:32,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2021-10-21 19:12:32,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697615130] [2021-10-21 19:12:32,321 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-21 19:12:32,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:12:32,322 INFO L82 PathProgramCache]: Analyzing trace with hash 2303, now seen corresponding path program 9 times [2021-10-21 19:12:32,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:12:32,322 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877492465] [2021-10-21 19:12:32,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:12:32,323 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:12:32,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:12:32,328 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:12:32,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:12:32,331 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:12:32,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:12:32,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-21 19:12:32,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-10-21 19:12:32,383 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. cyclomatic complexity: 9 Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 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) [2021-10-21 19:12:32,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:12:32,516 INFO L93 Difference]: Finished difference Result 91 states and 95 transitions. [2021-10-21 19:12:32,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-21 19:12:32,517 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 91 states and 95 transitions. [2021-10-21 19:12:32,519 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 6 [2021-10-21 19:12:32,521 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 91 states to 91 states and 95 transitions. [2021-10-21 19:12:32,521 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 52 [2021-10-21 19:12:32,524 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 52 [2021-10-21 19:12:32,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 91 states and 95 transitions. [2021-10-21 19:12:32,524 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:12:32,524 INFO L681 BuchiCegarLoop]: Abstraction has 91 states and 95 transitions. [2021-10-21 19:12:32,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states and 95 transitions. [2021-10-21 19:12:32,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 71. [2021-10-21 19:12:32,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 71 states have (on average 1.056338028169014) internal successors, (75), 70 states have internal predecessors, (75), 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) [2021-10-21 19:12:32,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2021-10-21 19:12:32,529 INFO L704 BuchiCegarLoop]: Abstraction has 71 states and 75 transitions. [2021-10-21 19:12:32,529 INFO L587 BuchiCegarLoop]: Abstraction has 71 states and 75 transitions. [2021-10-21 19:12:32,529 INFO L425 BuchiCegarLoop]: ======== Iteration 22============ [2021-10-21 19:12:32,529 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 71 states and 75 transitions. [2021-10-21 19:12:32,530 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 6 [2021-10-21 19:12:32,530 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:12:32,530 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:12:32,533 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [10, 10, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:12:32,533 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-21 19:12:32,534 INFO L791 eck$LassoCheckResult]: Stem: 3614#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(10); 3615#L-1 havoc main_#res;havoc main_#t~nondet6, main_#t~post5, main_~i~1, main_#t~ret7, main_#t~mem8, main_#t~mem9, main_#t~ret10, main_#t~mem11, main_#t~mem13, main_#t~post12, main_~i~2, main_#t~ret14, main_~#x~0.base, main_~#x~0.offset, main_~temp~0, main_~ret~1, main_~ret2~0, main_~ret5~0;call main_~#x~0.base, main_~#x~0.offset := #Ultimate.allocOnStack(40);havoc main_~temp~0;havoc main_~ret~1;havoc main_~ret2~0;havoc main_~ret5~0;main_~i~1 := 0; 3624#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 3627#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 3628#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 3635#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 3656#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 3655#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 3654#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 3653#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 3652#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 3651#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 3650#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 3649#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 3648#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 3647#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 3646#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 3645#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 3644#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 3643#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 3642#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 3641#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 3640#L34-3 assume !(main_~i~1 < 10); 3616#L34-4 sum_#in~x.base, sum_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc sum_#res;havoc sum_#t~mem4, sum_#t~post3, sum_~x.base, sum_~x.offset, sum_~i~0, sum_~ret~0;sum_~x.base, sum_~x.offset := sum_#in~x.base, sum_#in~x.offset;havoc sum_~i~0;havoc sum_~ret~0;sum_~ret~0 := 0;sum_~i~0 := 0; 3617#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 3630#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 3631#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 3632#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 3682#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 3681#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 3680#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 3679#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 3678#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 3677#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 3676#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 3675#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 3674#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 3673#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 3672#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 3671#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 3670#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 3639#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 3638#L20-3 assume !(sum_~i~0 < 10); 3625#L20-4 sum_#res := (if sum_~ret~0 % 4294967296 <= 2147483647 then sum_~ret~0 % 4294967296 else sum_~ret~0 % 4294967296 - 4294967296); 3626#L23 main_#t~ret7 := sum_#res;main_~ret~1 := main_#t~ret7;havoc main_#t~ret7;call main_#t~mem8 := read~int(main_~#x~0.base, main_~#x~0.offset, 4);main_~temp~0 := main_#t~mem8;havoc main_#t~mem8;call main_#t~mem9 := read~int(main_~#x~0.base, 4 + main_~#x~0.offset, 4);call write~int(main_#t~mem9, main_~#x~0.base, main_~#x~0.offset, 4);havoc main_#t~mem9;call write~int(main_~temp~0, main_~#x~0.base, 4 + main_~#x~0.offset, 4);sum_#in~x.base, sum_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc sum_#res;havoc sum_#t~mem4, sum_#t~post3, sum_~x.base, sum_~x.offset, sum_~i~0, sum_~ret~0;sum_~x.base, sum_~x.offset := sum_#in~x.base, sum_#in~x.offset;havoc sum_~i~0;havoc sum_~ret~0;sum_~ret~0 := 0;sum_~i~0 := 0; 3633#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 3634#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 3622#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 3623#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 3669#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 3668#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 3667#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 3666#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 3665#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 3664#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 3663#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 3662#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 3661#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 3660#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 3659#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 3658#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 3657#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 3637#L20-7 [2021-10-21 19:12:32,534 INFO L793 eck$LassoCheckResult]: Loop: 3637#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 3636#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 3637#L20-7 [2021-10-21 19:12:32,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:12:32,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1835777231, now seen corresponding path program 8 times [2021-10-21 19:12:32,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:12:32,536 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940900060] [2021-10-21 19:12:32,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:12:32,537 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:12:32,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:12:32,716 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2021-10-21 19:12:32,716 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:12:32,716 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940900060] [2021-10-21 19:12:32,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940900060] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:12:32,717 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747064450] [2021-10-21 19:12:32,717 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:12:32,717 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:12:32,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:12:32,749 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:12:32,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2021-10-21 19:12:33,114 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:12:33,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:12:33,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-21 19:12:33,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:12:33,354 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2021-10-21 19:12:33,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747064450] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:12:33,355 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:12:33,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2021-10-21 19:12:33,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123447103] [2021-10-21 19:12:33,356 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-21 19:12:33,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:12:33,356 INFO L82 PathProgramCache]: Analyzing trace with hash 2303, now seen corresponding path program 10 times [2021-10-21 19:12:33,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:12:33,357 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496238639] [2021-10-21 19:12:33,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:12:33,358 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:12:33,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:12:33,388 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:12:33,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:12:33,392 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:12:33,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:12:33,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-21 19:12:33,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-10-21 19:12:33,438 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. cyclomatic complexity: 9 Second operand has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 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) [2021-10-21 19:12:33,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:12:33,575 INFO L93 Difference]: Finished difference Result 94 states and 98 transitions. [2021-10-21 19:12:33,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-21 19:12:33,576 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 94 states and 98 transitions. [2021-10-21 19:12:33,577 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 6 [2021-10-21 19:12:33,578 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 94 states to 94 states and 98 transitions. [2021-10-21 19:12:33,583 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 54 [2021-10-21 19:12:33,583 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 54 [2021-10-21 19:12:33,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 94 states and 98 transitions. [2021-10-21 19:12:33,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:12:33,584 INFO L681 BuchiCegarLoop]: Abstraction has 94 states and 98 transitions. [2021-10-21 19:12:33,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states and 98 transitions. [2021-10-21 19:12:33,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 75. [2021-10-21 19:12:33,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 75 states have (on average 1.0533333333333332) internal successors, (79), 74 states have internal predecessors, (79), 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) [2021-10-21 19:12:33,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2021-10-21 19:12:33,591 INFO L704 BuchiCegarLoop]: Abstraction has 75 states and 79 transitions. [2021-10-21 19:12:33,591 INFO L587 BuchiCegarLoop]: Abstraction has 75 states and 79 transitions. [2021-10-21 19:12:33,591 INFO L425 BuchiCegarLoop]: ======== Iteration 23============ [2021-10-21 19:12:33,591 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 75 states and 79 transitions. [2021-10-21 19:12:33,592 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 6 [2021-10-21 19:12:33,598 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:12:33,598 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:12:33,599 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [10, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:12:33,599 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-21 19:12:33,599 INFO L791 eck$LassoCheckResult]: Stem: 3976#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(10); 3977#L-1 havoc main_#res;havoc main_#t~nondet6, main_#t~post5, main_~i~1, main_#t~ret7, main_#t~mem8, main_#t~mem9, main_#t~ret10, main_#t~mem11, main_#t~mem13, main_#t~post12, main_~i~2, main_#t~ret14, main_~#x~0.base, main_~#x~0.offset, main_~temp~0, main_~ret~1, main_~ret2~0, main_~ret5~0;call main_~#x~0.base, main_~#x~0.offset := #Ultimate.allocOnStack(40);havoc main_~temp~0;havoc main_~ret~1;havoc main_~ret2~0;havoc main_~ret5~0;main_~i~1 := 0; 3988#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 3991#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 3992#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 3998#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 4050#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 4049#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 4048#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 4047#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 4046#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 4045#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 4044#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 4043#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 4042#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 4041#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 4040#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 4039#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 4038#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 4037#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 4036#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 4035#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 4034#L34-3 assume !(main_~i~1 < 10); 3980#L34-4 sum_#in~x.base, sum_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc sum_#res;havoc sum_#t~mem4, sum_#t~post3, sum_~x.base, sum_~x.offset, sum_~i~0, sum_~ret~0;sum_~x.base, sum_~x.offset := sum_#in~x.base, sum_#in~x.offset;havoc sum_~i~0;havoc sum_~ret~0;sum_~ret~0 := 0;sum_~i~0 := 0; 3981#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 3994#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 3995#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 3996#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 4033#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 4032#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 4030#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 4028#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 4026#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 4024#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 4022#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 4020#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 4018#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 4016#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 4014#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 4012#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 4010#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 4008#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 4006#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 4003#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 4002#L20-3 assume !(sum_~i~0 < 10); 3989#L20-4 sum_#res := (if sum_~ret~0 % 4294967296 <= 2147483647 then sum_~ret~0 % 4294967296 else sum_~ret~0 % 4294967296 - 4294967296); 3990#L23 main_#t~ret7 := sum_#res;main_~ret~1 := main_#t~ret7;havoc main_#t~ret7;call main_#t~mem8 := read~int(main_~#x~0.base, main_~#x~0.offset, 4);main_~temp~0 := main_#t~mem8;havoc main_#t~mem8;call main_#t~mem9 := read~int(main_~#x~0.base, 4 + main_~#x~0.offset, 4);call write~int(main_#t~mem9, main_~#x~0.base, main_~#x~0.offset, 4);havoc main_#t~mem9;call write~int(main_~temp~0, main_~#x~0.base, 4 + main_~#x~0.offset, 4);sum_#in~x.base, sum_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc sum_#res;havoc sum_#t~mem4, sum_#t~post3, sum_~x.base, sum_~x.offset, sum_~i~0, sum_~ret~0;sum_~x.base, sum_~x.offset := sum_#in~x.base, sum_#in~x.offset;havoc sum_~i~0;havoc sum_~ret~0;sum_~ret~0 := 0;sum_~i~0 := 0; 3986#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 3987#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 3997#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 4031#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 4029#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 4027#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 4025#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 4023#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 4021#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 4019#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 4017#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 4015#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 4013#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 4011#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 4009#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 4007#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 4005#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 4004#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 4001#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 4000#L20-7 [2021-10-21 19:12:33,599 INFO L793 eck$LassoCheckResult]: Loop: 4000#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 3999#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 4000#L20-7 [2021-10-21 19:12:33,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:12:33,600 INFO L82 PathProgramCache]: Analyzing trace with hash -549950095, now seen corresponding path program 9 times [2021-10-21 19:12:33,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:12:33,600 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234354760] [2021-10-21 19:12:33,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:12:33,600 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:12:33,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:12:33,758 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:12:34,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:12:34,093 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:12:34,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:12:34,094 INFO L82 PathProgramCache]: Analyzing trace with hash 2303, now seen corresponding path program 11 times [2021-10-21 19:12:34,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:12:34,094 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538268155] [2021-10-21 19:12:34,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:12:34,094 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:12:34,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:12:34,097 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:12:34,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:12:34,100 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:12:34,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:12:34,101 INFO L82 PathProgramCache]: Analyzing trace with hash -221062545, now seen corresponding path program 10 times [2021-10-21 19:12:34,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:12:34,101 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735722344] [2021-10-21 19:12:34,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:12:34,102 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:12:34,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:12:34,304 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 81 proven. 19 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2021-10-21 19:12:34,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:12:34,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735722344] [2021-10-21 19:12:34,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735722344] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:12:34,305 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611951515] [2021-10-21 19:12:34,305 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-21 19:12:34,305 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:12:34,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:12:34,308 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:12:34,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2021-10-21 19:12:34,590 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-21 19:12:34,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:12:34,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-21 19:12:34,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:12:34,845 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2021-10-21 19:12:34,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611951515] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:12:34,846 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:12:34,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 13 [2021-10-21 19:12:34,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451860562] [2021-10-21 19:12:34,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:12:34,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-21 19:12:34,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2021-10-21 19:12:34,906 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. cyclomatic complexity: 9 Second operand has 13 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 13 states have internal predecessors, (32), 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) [2021-10-21 19:12:35,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:12:35,134 INFO L93 Difference]: Finished difference Result 94 states and 95 transitions. [2021-10-21 19:12:35,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-21 19:12:35,134 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 94 states and 95 transitions. [2021-10-21 19:12:35,136 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-21 19:12:35,137 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 94 states to 72 states and 73 transitions. [2021-10-21 19:12:35,137 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 32 [2021-10-21 19:12:35,137 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 52 [2021-10-21 19:12:35,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 72 states and 73 transitions. [2021-10-21 19:12:35,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:12:35,137 INFO L681 BuchiCegarLoop]: Abstraction has 72 states and 73 transitions. [2021-10-21 19:12:35,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states and 73 transitions. [2021-10-21 19:12:35,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2021-10-21 19:12:35,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 72 states have (on average 1.0138888888888888) internal successors, (73), 71 states have internal predecessors, (73), 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) [2021-10-21 19:12:35,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 73 transitions. [2021-10-21 19:12:35,140 INFO L704 BuchiCegarLoop]: Abstraction has 72 states and 73 transitions. [2021-10-21 19:12:35,140 INFO L587 BuchiCegarLoop]: Abstraction has 72 states and 73 transitions. [2021-10-21 19:12:35,140 INFO L425 BuchiCegarLoop]: ======== Iteration 24============ [2021-10-21 19:12:35,140 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 72 states and 73 transitions. [2021-10-21 19:12:35,141 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-21 19:12:35,141 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:12:35,141 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:12:35,147 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:12:35,148 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-21 19:12:35,148 INFO L791 eck$LassoCheckResult]: Stem: 4365#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(10); 4366#L-1 havoc main_#res;havoc main_#t~nondet6, main_#t~post5, main_~i~1, main_#t~ret7, main_#t~mem8, main_#t~mem9, main_#t~ret10, main_#t~mem11, main_#t~mem13, main_#t~post12, main_~i~2, main_#t~ret14, main_~#x~0.base, main_~#x~0.offset, main_~temp~0, main_~ret~1, main_~ret2~0, main_~ret5~0;call main_~#x~0.base, main_~#x~0.offset := #Ultimate.allocOnStack(40);havoc main_~temp~0;havoc main_~ret~1;havoc main_~ret2~0;havoc main_~ret5~0;main_~i~1 := 0; 4375#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 4383#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 4384#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 4378#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 4379#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 4436#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 4435#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 4434#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 4433#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 4432#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 4431#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 4430#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 4429#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 4428#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 4427#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 4426#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 4425#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 4424#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 4423#L34-3 assume !!(main_~i~1 < 10);call write~int(main_#t~nondet6, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~1, 4);havoc main_#t~nondet6; 4422#L34-2 main_#t~post5 := main_~i~1;main_~i~1 := 1 + main_#t~post5;havoc main_#t~post5; 4421#L34-3 assume !(main_~i~1 < 10); 4369#L34-4 sum_#in~x.base, sum_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc sum_#res;havoc sum_#t~mem4, sum_#t~post3, sum_~x.base, sum_~x.offset, sum_~i~0, sum_~ret~0;sum_~x.base, sum_~x.offset := sum_#in~x.base, sum_#in~x.offset;havoc sum_~i~0;havoc sum_~ret~0;sum_~ret~0 := 0;sum_~i~0 := 0; 4370#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 4380#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 4381#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 4420#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 4419#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 4418#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 4417#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 4415#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 4413#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 4411#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 4409#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 4407#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 4405#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 4403#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 4401#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 4399#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 4397#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 4395#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 4393#L20-3 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 4391#L20-2 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 4389#L20-3 assume !(sum_~i~0 < 10); 4376#L20-4 sum_#res := (if sum_~ret~0 % 4294967296 <= 2147483647 then sum_~ret~0 % 4294967296 else sum_~ret~0 % 4294967296 - 4294967296); 4377#L23 main_#t~ret7 := sum_#res;main_~ret~1 := main_#t~ret7;havoc main_#t~ret7;call main_#t~mem8 := read~int(main_~#x~0.base, main_~#x~0.offset, 4);main_~temp~0 := main_#t~mem8;havoc main_#t~mem8;call main_#t~mem9 := read~int(main_~#x~0.base, 4 + main_~#x~0.offset, 4);call write~int(main_#t~mem9, main_~#x~0.base, main_~#x~0.offset, 4);havoc main_#t~mem9;call write~int(main_~temp~0, main_~#x~0.base, 4 + main_~#x~0.offset, 4);sum_#in~x.base, sum_#in~x.offset := main_~#x~0.base, main_~#x~0.offset;havoc sum_#res;havoc sum_#t~mem4, sum_#t~post3, sum_~x.base, sum_~x.offset, sum_~i~0, sum_~ret~0;sum_~x.base, sum_~x.offset := sum_#in~x.base, sum_#in~x.offset;havoc sum_~i~0;havoc sum_~ret~0;sum_~ret~0 := 0;sum_~i~0 := 0; 4373#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 4374#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 4382#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 4416#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 4414#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 4412#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 4410#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 4408#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 4406#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 4404#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 4402#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 4400#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 4398#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 4396#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 4394#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 4392#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 4390#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 4388#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 4387#L20-8 assume !!(sum_~i~0 < 10);call sum_#t~mem4 := read~int(sum_~x.base, sum_~x.offset + 4 * sum_~i~0, 4);sum_~ret~0 := sum_~ret~0 + sum_#t~mem4;havoc sum_#t~mem4; 4386#L20-7 sum_#t~post3 := sum_~i~0;sum_~i~0 := 1 + sum_#t~post3;havoc sum_#t~post3; 4385#L20-8 assume !(sum_~i~0 < 10); 4367#L20-9 sum_#res := (if sum_~ret~0 % 4294967296 <= 2147483647 then sum_~ret~0 % 4294967296 else sum_~ret~0 % 4294967296 - 4294967296); 4368#L23-1 main_#t~ret10 := sum_#res;main_~ret2~0 := main_#t~ret10;havoc main_#t~ret10;call main_#t~mem11 := read~int(main_~#x~0.base, main_~#x~0.offset, 4);main_~temp~0 := main_#t~mem11;havoc main_#t~mem11;main_~i~2 := 0; 4372#L43-3 [2021-10-21 19:12:35,149 INFO L793 eck$LassoCheckResult]: Loop: 4372#L43-3 assume !!(main_~i~2 < 9);call main_#t~mem13 := read~int(main_~#x~0.base, main_~#x~0.offset + 4 * (1 + main_~i~2), 4);call write~int(main_#t~mem13, main_~#x~0.base, main_~#x~0.offset + 4 * main_~i~2, 4);havoc main_#t~mem13; 4371#L43-2 main_#t~post12 := main_~i~2;main_~i~2 := 1 + main_#t~post12;havoc main_#t~post12; 4372#L43-3 [2021-10-21 19:12:35,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:12:35,149 INFO L82 PathProgramCache]: Analyzing trace with hash -1987708689, now seen corresponding path program 1 times [2021-10-21 19:12:35,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:12:35,150 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720689950] [2021-10-21 19:12:35,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:12:35,150 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:12:35,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:12:35,383 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:12:35,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:12:35,576 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:12:35,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:12:35,577 INFO L82 PathProgramCache]: Analyzing trace with hash 2755, now seen corresponding path program 1 times [2021-10-21 19:12:35,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:12:35,578 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120424952] [2021-10-21 19:12:35,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:12:35,578 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:12:35,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:12:35,601 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:12:35,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:12:35,606 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:12:35,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:12:35,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1072398385, now seen corresponding path program 1 times [2021-10-21 19:12:35,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:12:35,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873481299] [2021-10-21 19:12:35,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:12:35,609 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:12:35,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:12:35,864 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:12:36,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:12:36,027 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:13:04,857 WARN L207 SmtUtils]: Spent 28.73 s on a formula simplification. DAG size of input: 617 DAG size of output: 424 [2021-10-21 19:13:12,426 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:13:12,427 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:13:12,427 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:13:12,427 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:13:12,427 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-21 19:13:12,427 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:13:12,427 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:13:12,427 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:13:12,427 INFO L133 ssoRankerPreferences]: Filename of dumped script: sum10-1.i_Iteration24_Lasso [2021-10-21 19:13:12,427 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:13:12,427 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:13:12,433 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:13:12,435 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:13:12,437 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:13:12,440 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:13:12,442 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:13:12,445 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:13:12,447 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:13:12,449 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:13:12,451 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:13:12,455 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:13:12,458 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:13:12,461 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:13:12,463 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:13:12,466 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:13:15,553 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2021-10-21 19:13:16,791 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:13:16,794 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:13:16,796 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:13:16,798 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:13:16,800 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:13:17,635 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:13:17,636 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-21 19:13:17,636 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:13:17,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:13:17,646 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:13:17,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Waiting until timeout for monitored process [2021-10-21 19:13:17,658 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 [2021-10-21 19:13:17,666 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:13:17,666 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:13:17,666 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:13:17,666 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:13:17,666 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:13:17,667 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:13:17,667 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:13:17,668 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:13:17,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Forceful destruction successful, exit code 0 [2021-10-21 19:13:17,689 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:13:17,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:13:17,690 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:13:17,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Waiting until timeout for monitored process [2021-10-21 19:13:17,691 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 [2021-10-21 19:13:17,700 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:13:17,700 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:13:17,700 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:13:17,700 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:13:17,700 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:13:17,700 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:13:17,701 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:13:17,705 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:13:17,727 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Forceful destruction successful, exit code 0 [2021-10-21 19:13:17,727 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:13:17,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:13:17,728 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:13:17,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Waiting until timeout for monitored process [2021-10-21 19:13:17,729 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 [2021-10-21 19:13:17,738 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:13:17,738 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:13:17,738 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:13:17,738 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:13:17,739 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-21 19:13:17,739 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-21 19:13:17,742 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:13:17,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Forceful destruction successful, exit code 0 [2021-10-21 19:13:17,763 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:13:17,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:13:17,764 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:13:17,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Waiting until timeout for monitored process [2021-10-21 19:13:17,765 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 [2021-10-21 19:13:17,773 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:13:17,773 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:13:17,773 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:13:17,773 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:13:17,773 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:13:17,774 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:13:17,774 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:13:17,779 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:13:17,799 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Ended with exit code 0 [2021-10-21 19:13:17,799 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:13:17,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:13:17,800 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:13:17,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Waiting until timeout for monitored process [2021-10-21 19:13:17,802 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 [2021-10-21 19:13:17,810 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:13:17,810 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:13:17,810 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:13:17,810 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:13:17,810 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:13:17,810 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:13:17,810 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:13:17,811 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:13:17,832 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Ended with exit code 0 [2021-10-21 19:13:17,832 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:13:17,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:13:17,833 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:13:17,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Waiting until timeout for monitored process [2021-10-21 19:13:17,836 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 [2021-10-21 19:13:17,844 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:13:17,844 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:13:17,844 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:13:17,844 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:13:17,845 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:13:17,845 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:13:17,845 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:13:17,846 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:13:17,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Forceful destruction successful, exit code 0 [2021-10-21 19:13:17,868 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:13:17,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:13:17,869 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:13:17,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Waiting until timeout for monitored process [2021-10-21 19:13:17,871 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 [2021-10-21 19:13:17,878 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:13:17,879 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:13:17,879 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:13:17,879 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:13:17,879 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:13:17,879 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:13:17,879 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:13:17,880 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:13:17,901 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Ended with exit code 0 [2021-10-21 19:13:17,902 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:13:17,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:13:17,903 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:13:17,905 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 [2021-10-21 19:13:17,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Waiting until timeout for monitored process [2021-10-21 19:13:17,913 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:13:17,913 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:13:17,913 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:13:17,913 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:13:17,913 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:13:17,914 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:13:17,914 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:13:17,917 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:13:17,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Forceful destruction successful, exit code 0 [2021-10-21 19:13:17,937 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:13:17,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:13:17,938 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:13:17,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (72)] Waiting until timeout for monitored process [2021-10-21 19:13:17,939 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 [2021-10-21 19:13:17,946 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:13:17,946 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:13:17,947 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:13:17,947 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:13:17,948 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-21 19:13:17,948 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-21 19:13:17,950 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:13:17,972 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (72)] Ended with exit code 0 [2021-10-21 19:13:17,973 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:13:17,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:13:17,973 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:13:17,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (73)] Waiting until timeout for monitored process [2021-10-21 19:13:17,974 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 [2021-10-21 19:13:17,982 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:13:17,982 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:13:17,983 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:13:17,983 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:13:17,984 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-21 19:13:17,984 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-21 19:13:17,987 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:13:18,009 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (73)] Forceful destruction successful, exit code 0 [2021-10-21 19:13:18,010 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:13:18,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:13:18,011 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:13:18,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (74)] Waiting until timeout for monitored process [2021-10-21 19:13:18,013 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 [2021-10-21 19:13:18,021 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:13:18,021 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:13:18,021 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:13:18,021 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:13:18,021 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:13:18,022 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:13:18,022 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:13:18,023 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:13:18,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (74)] Forceful destruction successful, exit code 0 [2021-10-21 19:13:18,045 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:13:18,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:13:18,046 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:13:18,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (75)] Waiting until timeout for monitored process [2021-10-21 19:13:18,047 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 [2021-10-21 19:13:18,056 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:13:18,056 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:13:18,056 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:13:18,057 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:13:18,057 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:13:18,057 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:13:18,057 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:13:18,058 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:13:18,078 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (75)] Ended with exit code 0 [2021-10-21 19:13:18,079 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:13:18,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:13:18,079 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:13:18,084 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 [2021-10-21 19:13:18,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (76)] Waiting until timeout for monitored process [2021-10-21 19:13:18,092 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:13:18,092 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:13:18,093 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:13:18,093 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:13:18,093 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:13:18,093 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:13:18,093 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:13:18,121 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:13:18,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (76)] Forceful destruction successful, exit code 0 [2021-10-21 19:13:18,149 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:13:18,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:13:18,150 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:13:18,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (77)] Waiting until timeout for monitored process [2021-10-21 19:13:18,151 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 [2021-10-21 19:13:18,159 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:13:18,159 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:13:18,159 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:13:18,159 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:13:18,161 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-21 19:13:18,161 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-21 19:13:18,172 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:13:18,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (77)] Forceful destruction successful, exit code 0 [2021-10-21 19:13:18,208 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:13:18,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:13:18,209 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:13:18,223 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 [2021-10-21 19:13:18,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (78)] Waiting until timeout for monitored process [2021-10-21 19:13:18,232 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:13:18,232 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:13:18,232 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:13:18,232 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:13:18,232 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:13:18,232 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:13:18,232 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:13:18,234 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:13:18,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (78)] Forceful destruction successful, exit code 0 [2021-10-21 19:13:18,256 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:13:18,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:13:18,256 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:13:18,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (79)] Waiting until timeout for monitored process [2021-10-21 19:13:18,258 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 [2021-10-21 19:13:18,266 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:13:18,266 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:13:18,267 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:13:18,267 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:13:18,274 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-21 19:13:18,274 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-21 19:13:18,293 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-21 19:13:18,340 INFO L443 ModelExtractionUtils]: Simplification made 20 calls to the SMT solver. [2021-10-21 19:13:18,340 INFO L444 ModelExtractionUtils]: 4 out of 28 variables were initially zero. Simplification set additionally 21 variables to zero. [2021-10-21 19:13:18,340 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:13:18,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:13:18,342 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:13:18,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (80)] Waiting until timeout for monitored process [2021-10-21 19:13:18,343 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-21 19:13:18,354 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2021-10-21 19:13:18,354 INFO L513 LassoAnalysis]: Proved termination. [2021-10-21 19:13:18,354 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~2) = -2*ULTIMATE.start_main_~i~2 + 17 Supporting invariants [] [2021-10-21 19:13:18,376 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (79)] Ended with exit code 0 [2021-10-21 19:13:18,683 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (80)] Forceful destruction successful, exit code 0 [2021-10-21 19:13:19,013 INFO L297 tatePredicateManager]: 133 out of 133 supporting invariants were superfluous and have been removed [2021-10-21 19:13:19,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:13:19,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:13:19,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 19:13:19,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:13:19,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:13:19,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 19:13:19,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:13:19,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:13:19,318 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 [2021-10-21 19:13:19,319 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 72 states and 73 transitions. cyclomatic complexity: 3 Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 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) [2021-10-21 19:13:19,328 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 72 states and 73 transitions. cyclomatic complexity: 3. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 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) Result 74 states and 76 transitions. Complement of second has 4 states. [2021-10-21 19:13:19,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-21 19:13:19,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 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) [2021-10-21 19:13:19,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 18 transitions. [2021-10-21 19:13:19,329 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 18 transitions. Stem has 70 letters. Loop has 2 letters. [2021-10-21 19:13:19,329 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:13:19,329 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 18 transitions. Stem has 72 letters. Loop has 2 letters. [2021-10-21 19:13:19,330 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:13:19,330 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 18 transitions. Stem has 70 letters. Loop has 4 letters. [2021-10-21 19:13:19,331 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:13:19,331 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 74 states and 76 transitions. [2021-10-21 19:13:19,332 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-21 19:13:19,332 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 74 states to 0 states and 0 transitions. [2021-10-21 19:13:19,332 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-21 19:13:19,333 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-21 19:13:19,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-21 19:13:19,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:13:19,333 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 19:13:19,333 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 19:13:19,333 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 19:13:19,333 INFO L425 BuchiCegarLoop]: ======== Iteration 25============ [2021-10-21 19:13:19,334 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-10-21 19:13:19,334 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-21 19:13:19,334 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-10-21 19:13:19,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.10 07:13:19 BoogieIcfgContainer [2021-10-21 19:13:19,340 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-21 19:13:19,341 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:13:19,341 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:13:19,341 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:13:19,342 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:12:07" (3/4) ... [2021-10-21 19:13:19,345 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-21 19:13:19,345 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:13:19,346 INFO L168 Benchmark]: Toolchain (without parser) took 72293.73 ms. Allocated memory was 83.9 MB in the beginning and 211.8 MB in the end (delta: 127.9 MB). Free memory was 50.4 MB in the beginning and 87.6 MB in the end (delta: -37.2 MB). Peak memory consumption was 90.5 MB. Max. memory is 16.1 GB. [2021-10-21 19:13:19,347 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 83.9 MB. Free memory was 62.9 MB in the beginning and 62.9 MB in the end (delta: 29.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:13:19,347 INFO L168 Benchmark]: CACSL2BoogieTranslator took 268.66 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 50.2 MB in the beginning and 76.8 MB in the end (delta: -26.6 MB). Peak memory consumption was 7.9 MB. Max. memory is 16.1 GB. [2021-10-21 19:13:19,347 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.19 ms. Allocated memory is still 100.7 MB. Free memory was 76.8 MB in the beginning and 75.0 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:13:19,348 INFO L168 Benchmark]: Boogie Preprocessor took 36.18 ms. Allocated memory is still 100.7 MB. Free memory was 75.0 MB in the beginning and 73.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 19:13:19,348 INFO L168 Benchmark]: RCFGBuilder took 467.84 ms. Allocated memory is still 100.7 MB. Free memory was 73.7 MB in the beginning and 61.7 MB in the end (delta: 11.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-21 19:13:19,349 INFO L168 Benchmark]: BuchiAutomizer took 71465.62 ms. Allocated memory was 100.7 MB in the beginning and 211.8 MB in the end (delta: 111.1 MB). Free memory was 61.7 MB in the beginning and 88.6 MB in the end (delta: -26.9 MB). Peak memory consumption was 86.7 MB. Max. memory is 16.1 GB. [2021-10-21 19:13:19,349 INFO L168 Benchmark]: Witness Printer took 4.32 ms. Allocated memory is still 211.8 MB. Free memory is still 87.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:13:19,351 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 83.9 MB. Free memory was 62.9 MB in the beginning and 62.9 MB in the end (delta: 29.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 268.66 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 50.2 MB in the beginning and 76.8 MB in the end (delta: -26.6 MB). Peak memory consumption was 7.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.19 ms. Allocated memory is still 100.7 MB. Free memory was 76.8 MB in the beginning and 75.0 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 36.18 ms. Allocated memory is still 100.7 MB. Free memory was 75.0 MB in the beginning and 73.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 467.84 ms. Allocated memory is still 100.7 MB. Free memory was 73.7 MB in the beginning and 61.7 MB in the end (delta: 11.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 71465.62 ms. Allocated memory was 100.7 MB in the beginning and 211.8 MB in the end (delta: 111.1 MB). Free memory was 61.7 MB in the beginning and 88.6 MB in the end (delta: -26.9 MB). Peak memory consumption was 86.7 MB. Max. memory is 16.1 GB. * Witness Printer took 4.32 ms. Allocated memory is still 211.8 MB. Free memory is still 87.6 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 24 terminating modules (21 trivial, 3 deterministic, 0 nondeterministic). One deterministic module has affine ranking function 19 * unknown-#length-unknown[x] + -8 * i and consists of 5 locations. One deterministic module has affine ranking function 19 + -2 * i and consists of 4 locations. One deterministic module has affine ranking function 17 + -2 * i and consists of 3 locations. 21 modules have a trivial ranking function, the largest among these consists of 13 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 71.4s and 25 iterations. TraceHistogramMax:10. Analysis of lassos took 68.4s. Construction of modules took 1.0s. Büchi inclusion checks took 1.3s. Highest rank in rank-based complementation 3. Minimization of det autom 24. Minimization of nondet autom 0. Automata minimization 162.8ms AutomataMinimizationTime, 23 MinimizatonAttempts, 136 StatesRemovedByMinimization, 19 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 75 states and ocurred in iteration 22. Nontrivial modules had stage [3, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 410 SDtfs, 454 SDslu, 840 SDs, 0 SdLazy, 918 SolverSat, 311 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1084.1ms Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc1 concLT0 SILN0 SILU20 SILI0 SILT0 lasso3 LassoPreprocessingBenchmarks: Lassos: inital1073 mio100 ax100 hnf99 lsp124 ukn39 mio100 lsp33 div94 bol100 ite100 ukn100 eq166 hnf88 smp97 dnf150 smp83 tf100 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 58ms 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! [2021-10-21 19:13:19,401 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2021-10-21 19:13:19,607 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2021-10-21 19:13:19,802 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2021-10-21 19:13:20,005 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2021-10-21 19:13:20,206 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2021-10-21 19:13:20,404 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2021-10-21 19:13:20,605 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2021-10-21 19:13:20,805 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2021-10-21 19:13:21,003 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2021-10-21 19:13:21,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2021-10-21 19:13:21,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-10-21 19:13:21,606 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2021-10-21 19:13:21,805 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2021-10-21 19:13:22,004 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2021-10-21 19:13:22,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-10-21 19:13:22,407 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2021-10-21 19:13:22,607 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2021-10-21 19:13:22,806 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-10-21 19:13:23,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-10-21 19:13:23,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_660a81d9-f216-495a-9a30-2cebbfbbbb1d/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...