./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loops/invert_string-3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loops/invert_string-3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ca98535e808a51f7cfa7d21c9d33f259821212a6554e27f29c2bddd9197c0249 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/config using search string *Termination*32bit*_Bitvector*.epf No suitable settings file found using Termination*32bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: MapEliminator tries to combine Int and (Array Int Int) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:31:32,039 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:31:32,043 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:31:32,116 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:31:32,117 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:31:32,123 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:31:32,126 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:31:32,131 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:31:32,135 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:31:32,142 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:31:32,144 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:31:32,146 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:31:32,147 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:31:32,150 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:31:32,153 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:31:32,164 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:31:32,166 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:31:32,168 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:31:32,171 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:31:32,182 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:31:32,184 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:31:32,186 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:31:32,190 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:31:32,192 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:31:32,203 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:31:32,203 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:31:32,204 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:31:32,207 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:31:32,208 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:31:32,210 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:31:32,210 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:31:32,212 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:31:32,214 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:31:32,216 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:31:32,218 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:31:32,218 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:31:32,219 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:31:32,220 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:31:32,220 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:31:32,221 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:31:32,222 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:31:32,224 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-28 23:31:32,282 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:31:32,282 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:31:32,283 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:31:32,283 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:31:32,285 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:31:32,286 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:31:32,286 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:31:32,286 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-28 23:31:32,287 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-28 23:31:32,287 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-28 23:31:32,288 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-28 23:31:32,289 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-28 23:31:32,289 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-28 23:31:32,290 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:31:32,290 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:31:32,290 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 23:31:32,290 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:31:32,291 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:31:32,291 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:31:32,291 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-28 23:31:32,292 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-28 23:31:32,292 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-28 23:31:32,292 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:31:32,292 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:31:32,293 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-28 23:31:32,293 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:31:32,296 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-28 23:31:32,296 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:31:32,296 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:31:32,297 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:31:32,297 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:31:32,298 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:31:32,299 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-28 23:31:32,299 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_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ca98535e808a51f7cfa7d21c9d33f259821212a6554e27f29c2bddd9197c0249 [2021-10-28 23:31:32,636 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:31:32,663 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:31:32,666 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:31:32,668 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:31:32,669 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:31:32,670 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/loops/invert_string-3.c [2021-10-28 23:31:32,773 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/data/e090bba2c/eaa82ebf60274f3d8d32283cca59f56e/FLAG70673eb81 [2021-10-28 23:31:33,333 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:31:33,334 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/sv-benchmarks/c/loops/invert_string-3.c [2021-10-28 23:31:33,347 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/data/e090bba2c/eaa82ebf60274f3d8d32283cca59f56e/FLAG70673eb81 [2021-10-28 23:31:33,688 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/data/e090bba2c/eaa82ebf60274f3d8d32283cca59f56e [2021-10-28 23:31:33,695 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:31:33,697 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:31:33,702 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:31:33,702 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:31:33,707 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:31:33,708 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:31:33" (1/1) ... [2021-10-28 23:31:33,710 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12fa61b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:31:33, skipping insertion in model container [2021-10-28 23:31:33,711 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:31:33" (1/1) ... [2021-10-28 23:31:33,720 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:31:33,739 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:31:33,961 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_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/sv-benchmarks/c/loops/invert_string-3.c[327,340] [2021-10-28 23:31:33,999 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:31:34,009 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:31:34,021 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_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/sv-benchmarks/c/loops/invert_string-3.c[327,340] [2021-10-28 23:31:34,031 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:31:34,047 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:31:34,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:31:34 WrapperNode [2021-10-28 23:31:34,048 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:31:34,049 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:31:34,049 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:31:34,049 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:31:34,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:31:34" (1/1) ... [2021-10-28 23:31:34,069 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:31:34" (1/1) ... [2021-10-28 23:31:34,097 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:31:34,098 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:31:34,098 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:31:34,098 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:31:34,109 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:31:34" (1/1) ... [2021-10-28 23:31:34,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:31:34" (1/1) ... [2021-10-28 23:31:34,112 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:31:34" (1/1) ... [2021-10-28 23:31:34,113 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:31:34" (1/1) ... [2021-10-28 23:31:34,121 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:31:34" (1/1) ... [2021-10-28 23:31:34,127 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:31:34" (1/1) ... [2021-10-28 23:31:34,128 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:31:34" (1/1) ... [2021-10-28 23:31:34,131 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:31:34,132 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:31:34,133 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:31:34,133 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:31:34,143 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:31:34" (1/1) ... [2021-10-28 23:31:34,153 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:31:34,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:31:34,189 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:31:34,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-28 23:31:34,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:31:34,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:31:34,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 23:31:34,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:31:34,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:31:34,252 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 23:31:34,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 23:31:34,708 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:31:34,708 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-10-28 23:31:34,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:31:34 BoogieIcfgContainer [2021-10-28 23:31:34,710 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:31:34,712 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-28 23:31:34,712 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-28 23:31:34,723 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-28 23:31:34,724 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:31:34,725 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.10 11:31:33" (1/3) ... [2021-10-28 23:31:34,727 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@9e21bf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 11:31:34, skipping insertion in model container [2021-10-28 23:31:34,727 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:31:34,727 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:31:34" (2/3) ... [2021-10-28 23:31:34,728 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@9e21bf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 11:31:34, skipping insertion in model container [2021-10-28 23:31:34,728 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:31:34,728 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:31:34" (3/3) ... [2021-10-28 23:31:34,731 INFO L389 chiAutomizerObserver]: Analyzing ICFG invert_string-3.c [2021-10-28 23:31:34,814 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-28 23:31:34,815 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-28 23:31:34,815 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-28 23:31:34,815 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-28 23:31:34,815 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-28 23:31:34,815 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-28 23:31:34,816 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-28 23:31:34,816 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-28 23:31:34,839 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 17 states, 16 states have (on average 1.4375) internal successors, (23), 16 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) [2021-10-28 23:31:34,867 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2021-10-28 23:31:34,867 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:31:34,867 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:31:34,875 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 23:31:34,875 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-28 23:31:34,875 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-28 23:31:34,876 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 17 states, 16 states have (on average 1.4375) internal successors, (23), 16 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) [2021-10-28 23:31:34,879 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2021-10-28 23:31:34,880 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:31:34,880 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:31:34,881 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 23:31:34,881 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-28 23:31:34,890 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 6#L-1true havoc main_#res;havoc main_#t~nondet8, main_#t~post7, main_#t~mem10, main_#t~post11, main_#t~post9, main_#t~mem13, main_#t~mem14, main_#t~post15, main_#t~post12, main_~max~0, main_~#str1~0.base, main_~#str1~0.offset, main_~#str2~0.base, main_~#str2~0.offset, main_~i~0, main_~j~0;main_~max~0 := 5;call main_~#str1~0.base, main_~#str1~0.offset := #Ultimate.allocOnStack((if main_~max~0 % 4294967296 % 4294967296 <= 2147483647 then main_~max~0 % 4294967296 % 4294967296 else main_~max~0 % 4294967296 % 4294967296 - 4294967296));call main_~#str2~0.base, main_~#str2~0.offset := #Ultimate.allocOnStack((if main_~max~0 % 4294967296 % 4294967296 <= 2147483647 then main_~max~0 % 4294967296 % 4294967296 else main_~max~0 % 4294967296 % 4294967296 - 4294967296));havoc main_~i~0;havoc main_~j~0;main_~i~0 := 0; 15#L18-3true [2021-10-28 23:31:34,890 INFO L793 eck$LassoCheckResult]: Loop: 15#L18-3true assume !!(main_~i~0 % 4294967296 < main_~max~0 % 4294967296);call write~int(main_#t~nondet8, main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 10#L18-2true main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 15#L18-3true [2021-10-28 23:31:34,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:31:34,899 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-10-28 23:31:34,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:31:34,912 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755572194] [2021-10-28 23:31:34,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:31:34,914 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:31:35,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:31:35,122 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:31:35,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:31:35,214 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:31:35,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:31:35,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1283, now seen corresponding path program 1 times [2021-10-28 23:31:35,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:31:35,236 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857632685] [2021-10-28 23:31:35,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:31:35,238 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:31:35,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:31:35,259 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:31:35,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:31:35,289 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:31:35,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:31:35,294 INFO L85 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2021-10-28 23:31:35,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:31:35,295 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105741186] [2021-10-28 23:31:35,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:31:35,296 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:31:35,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:31:35,384 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:31:35,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:31:35,421 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:31:36,599 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:31:36,600 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:31:36,600 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:31:36,600 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:31:36,600 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 23:31:36,600 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:31:36,602 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:31:36,602 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:31:36,602 INFO L133 ssoRankerPreferences]: Filename of dumped script: invert_string-3.c_Iteration1_Lasso [2021-10-28 23:31:36,602 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:31:36,603 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:31:36,633 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:31:36,640 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:31:36,644 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:31:36,647 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:31:36,649 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:31:36,653 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:31:36,657 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:31:36,661 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:31:36,664 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:31:36,668 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:31:36,672 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:31:37,065 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:31:37,069 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:31:37,073 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:31:37,076 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:31:37,080 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:31:37,575 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:31:37,580 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 23:31:37,583 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:31:37,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:31:37,591 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:31:37,600 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:31:37,612 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:31:37,612 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:31:37,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-10-28 23:31:37,613 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:31:37,613 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:31:37,614 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:31:37,616 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:31:37,617 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:31:37,635 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:31:37,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-10-28 23:31:37,689 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:31:37,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:31:37,691 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:31:37,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-10-28 23:31:37,700 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:31:37,712 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:31:37,713 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:31:37,713 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:31:37,713 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:31:37,723 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 23:31:37,723 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 23:31:37,743 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:31:37,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-10-28 23:31:37,783 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:31:37,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:31:37,787 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:31:37,795 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:31:37,806 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:31:37,806 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:31:37,806 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:31:37,807 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:31:37,807 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:31:37,808 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:31:37,808 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:31:37,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-28 23:31:37,823 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:31:37,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-10-28 23:31:37,869 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:31:37,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:31:37,871 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:31:37,879 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:31:37,890 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:31:37,891 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:31:37,891 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:31:37,891 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:31:37,891 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:31:37,892 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:31:37,892 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:31:37,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-28 23:31:37,907 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:31:37,933 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-10-28 23:31:37,934 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:31:37,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:31:37,936 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:31:37,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-10-28 23:31:37,944 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:31:37,953 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:31:37,953 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:31:37,953 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:31:37,953 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:31:37,957 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 23:31:37,957 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 23:31:37,987 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:31:38,033 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-10-28 23:31:38,033 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:31:38,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:31:38,035 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:31:38,044 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:31:38,055 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:31:38,055 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:31:38,055 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:31:38,055 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:31:38,059 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 23:31:38,059 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 23:31:38,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-10-28 23:31:38,064 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:31:38,093 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2021-10-28 23:31:38,093 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:31:38,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:31:38,096 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:31:38,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-10-28 23:31:38,101 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:31:38,112 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:31:38,112 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:31:38,113 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:31:38,113 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:31:38,113 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:31:38,113 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:31:38,114 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:31:38,115 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:31:38,140 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-10-28 23:31:38,141 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:31:38,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:31:38,143 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:31:38,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-10-28 23:31:38,153 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:31:38,162 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:31:38,162 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:31:38,162 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:31:38,162 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:31:38,162 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:31:38,163 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:31:38,163 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:31:38,170 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:31:38,198 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2021-10-28 23:31:38,199 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:31:38,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:31:38,200 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:31:38,202 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:31:38,214 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:31:38,214 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:31:38,214 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:31:38,214 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:31:38,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-10-28 23:31:38,219 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 23:31:38,219 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 23:31:38,243 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:31:38,273 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-10-28 23:31:38,273 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:31:38,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:31:38,275 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:31:38,280 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:31:38,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-10-28 23:31:38,289 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:31:38,289 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:31:38,290 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:31:38,290 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:31:38,290 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:31:38,291 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:31:38,291 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:31:38,295 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:31:38,321 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-10-28 23:31:38,321 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:31:38,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:31:38,323 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:31:38,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-10-28 23:31:38,324 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:31:38,335 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:31:38,335 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:31:38,335 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:31:38,335 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:31:38,339 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 23:31:38,340 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 23:31:38,351 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:31:38,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-10-28 23:31:38,376 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:31:38,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:31:38,382 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:31:38,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-10-28 23:31:38,387 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:31:38,396 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:31:38,396 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:31:38,397 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:31:38,397 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:31:38,400 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 23:31:38,400 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 23:31:38,406 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:31:38,431 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-10-28 23:31:38,431 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:31:38,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:31:38,434 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:31:38,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-10-28 23:31:38,452 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:31:38,462 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:31:38,462 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:31:38,462 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:31:38,462 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:31:38,462 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:31:38,464 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:31:38,465 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:31:38,466 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:31:38,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-10-28 23:31:38,498 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:31:38,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:31:38,499 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:31:38,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-10-28 23:31:38,506 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:31:38,515 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:31:38,515 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:31:38,515 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:31:38,515 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:31:38,518 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 23:31:38,518 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 23:31:38,526 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:31:38,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-10-28 23:31:38,554 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:31:38,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:31:38,555 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:31:38,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-10-28 23:31:38,557 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:31:38,566 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:31:38,566 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:31:38,567 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:31:38,567 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:31:38,569 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 23:31:38,569 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 23:31:38,573 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:31:38,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-10-28 23:31:38,598 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:31:38,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:31:38,599 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:31:38,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-10-28 23:31:38,603 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:31:38,612 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:31:38,612 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:31:38,612 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:31:38,613 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:31:38,615 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 23:31:38,616 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 23:31:38,629 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:31:38,657 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-10-28 23:31:38,657 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:31:38,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:31:38,658 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:31:38,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-10-28 23:31:38,660 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:31:38,669 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:31:38,670 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:31:38,670 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:31:38,670 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:31:38,675 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 23:31:38,675 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 23:31:38,698 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:31:38,733 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-10-28 23:31:38,734 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:31:38,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:31:38,735 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:31:38,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-10-28 23:31:38,737 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:31:38,746 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:31:38,746 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:31:38,746 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:31:38,746 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:31:38,750 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 23:31:38,750 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 23:31:38,787 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:31:38,828 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-10-28 23:31:38,828 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:31:38,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:31:38,830 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:31:38,848 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:31:38,859 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:31:38,860 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:31:38,860 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:31:38,860 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:31:38,863 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 23:31:38,863 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 23:31:38,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-10-28 23:31:38,879 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:31:38,913 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-10-28 23:31:38,913 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:31:38,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:31:38,915 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:31:38,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-10-28 23:31:38,918 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 [2021-10-28 23:31:38,926 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:31:38,926 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:31:38,927 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:31:38,927 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:31:38,929 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 23:31:38,929 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 23:31:38,944 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:31:38,969 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-10-28 23:31:38,969 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:31:38,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:31:38,973 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:31:38,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-10-28 23:31:38,975 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:31:38,984 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:31:38,985 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:31:38,985 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:31:38,985 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:31:38,985 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:31:38,986 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:31:38,986 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:31:38,991 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:31:39,015 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2021-10-28 23:31:39,016 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:31:39,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:31:39,017 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:31:39,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-10-28 23:31:39,020 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:31:39,031 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:31:39,031 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:31:39,031 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:31:39,031 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:31:39,033 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 23:31:39,034 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 23:31:39,043 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:31:39,067 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-10-28 23:31:39,068 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:31:39,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:31:39,069 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:31:39,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-10-28 23:31:39,071 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:31:39,079 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:31:39,080 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:31:39,080 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:31:39,080 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:31:39,082 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 23:31:39,083 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 23:31:39,087 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:31:39,115 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2021-10-28 23:31:39,115 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:31:39,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:31:39,117 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:31:39,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-10-28 23:31:39,119 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:31:39,131 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:31:39,132 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:31:39,132 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:31:39,132 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:31:39,149 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 23:31:39,149 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 23:31:39,179 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 23:31:39,242 INFO L443 ModelExtractionUtils]: Simplification made 10 calls to the SMT solver. [2021-10-28 23:31:39,242 INFO L444 ModelExtractionUtils]: 3 out of 22 variables were initially zero. Simplification set additionally 15 variables to zero. [2021-10-28 23:31:39,244 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:31:39,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:31:39,249 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:31:39,251 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 23:31:39,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-10-28 23:31:39,280 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2021-10-28 23:31:39,281 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 23:31:39,281 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, v_rep(select #length ULTIMATE.start_main_~#str1~0.base)_1, ULTIMATE.start_main_~#str1~0.offset) = -1*ULTIMATE.start_main_~i~0 + 1*v_rep(select #length ULTIMATE.start_main_~#str1~0.base)_1 - 1*ULTIMATE.start_main_~#str1~0.offset Supporting invariants [] [2021-10-28 23:31:39,326 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-10-28 23:31:39,429 INFO L297 tatePredicateManager]: 16 out of 16 supporting invariants were superfluous and have been removed [2021-10-28 23:31:39,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:31:39,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:31:39,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:31:39,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:31:39,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:31:39,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:31:39,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:31:39,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:31:39,602 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-28 23:31:39,604 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 17 states, 16 states have (on average 1.4375) internal successors, (23), 16 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) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:31:39,674 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 17 states, 16 states have (on average 1.4375) internal successors, (23), 16 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). 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 33 states and 47 transitions. Complement of second has 8 states. [2021-10-28 23:31:39,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 23:31:39,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:31:39,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 23 transitions. [2021-10-28 23:31:39,679 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 2 letters. Loop has 2 letters. [2021-10-28 23:31:39,680 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:31:39,680 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 4 letters. Loop has 2 letters. [2021-10-28 23:31:39,680 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:31:39,680 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 2 letters. Loop has 4 letters. [2021-10-28 23:31:39,680 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:31:39,681 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 47 transitions. [2021-10-28 23:31:39,684 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2021-10-28 23:31:39,688 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 14 states and 19 transitions. [2021-10-28 23:31:39,689 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2021-10-28 23:31:39,689 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2021-10-28 23:31:39,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 19 transitions. [2021-10-28 23:31:39,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:31:39,690 INFO L681 BuchiCegarLoop]: Abstraction has 14 states and 19 transitions. [2021-10-28 23:31:39,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 19 transitions. [2021-10-28 23:31:39,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-28 23:31:39,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 13 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) [2021-10-28 23:31:39,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 19 transitions. [2021-10-28 23:31:39,718 INFO L704 BuchiCegarLoop]: Abstraction has 14 states and 19 transitions. [2021-10-28 23:31:39,718 INFO L587 BuchiCegarLoop]: Abstraction has 14 states and 19 transitions. [2021-10-28 23:31:39,718 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-28 23:31:39,718 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 19 transitions. [2021-10-28 23:31:39,719 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2021-10-28 23:31:39,719 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:31:39,719 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:31:39,719 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-10-28 23:31:39,719 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-28 23:31:39,720 INFO L791 eck$LassoCheckResult]: Stem: 154#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 155#L-1 havoc main_#res;havoc main_#t~nondet8, main_#t~post7, main_#t~mem10, main_#t~post11, main_#t~post9, main_#t~mem13, main_#t~mem14, main_#t~post15, main_#t~post12, main_~max~0, main_~#str1~0.base, main_~#str1~0.offset, main_~#str2~0.base, main_~#str2~0.offset, main_~i~0, main_~j~0;main_~max~0 := 5;call main_~#str1~0.base, main_~#str1~0.offset := #Ultimate.allocOnStack((if main_~max~0 % 4294967296 % 4294967296 <= 2147483647 then main_~max~0 % 4294967296 % 4294967296 else main_~max~0 % 4294967296 % 4294967296 - 4294967296));call main_~#str2~0.base, main_~#str2~0.offset := #Ultimate.allocOnStack((if main_~max~0 % 4294967296 % 4294967296 <= 2147483647 then main_~max~0 % 4294967296 % 4294967296 else main_~max~0 % 4294967296 % 4294967296 - 4294967296));havoc main_~i~0;havoc main_~j~0;main_~i~0 := 0; 158#L18-3 assume !(main_~i~0 % 4294967296 < main_~max~0 % 4294967296); 167#L18-4 call write~int(0, main_~#str1~0.base, main_~#str1~0.offset + (if (main_~max~0 - 1) % 4294967296 % 4294967296 <= 2147483647 then (main_~max~0 - 1) % 4294967296 % 4294967296 else (main_~max~0 - 1) % 4294967296 % 4294967296 - 4294967296), 1);main_~j~0 := 0;main_~i~0 := (if (main_~max~0 - 1) % 4294967296 % 4294967296 <= 2147483647 then (main_~max~0 - 1) % 4294967296 % 4294967296 else (main_~max~0 - 1) % 4294967296 % 4294967296 - 4294967296); 166#L26-3 [2021-10-28 23:31:39,720 INFO L793 eck$LassoCheckResult]: Loop: 166#L26-3 assume !!(main_~i~0 >= 0);call main_#t~mem10 := read~int(main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);call write~int(main_#t~mem10, main_~#str2~0.base, main_~#str2~0.offset + main_~j~0, 1);havoc main_#t~mem10;main_#t~post11 := main_~j~0;main_~j~0 := 1 + main_#t~post11;havoc main_#t~post11; 165#L26-2 main_#t~post9 := main_~i~0;main_~i~0 := main_#t~post9 - 1;havoc main_#t~post9; 166#L26-3 [2021-10-28 23:31:39,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:31:39,721 INFO L85 PathProgramCache]: Analyzing trace with hash 925707, now seen corresponding path program 1 times [2021-10-28 23:31:39,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:31:39,721 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995990795] [2021-10-28 23:31:39,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:31:39,721 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:31:39,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:31:39,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:31:39,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:31:39,930 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995990795] [2021-10-28 23:31:39,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995990795] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:31:39,931 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:31:39,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:31:39,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680654687] [2021-10-28 23:31:39,934 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 23:31:39,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:31:39,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1731, now seen corresponding path program 1 times [2021-10-28 23:31:39,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:31:39,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237016405] [2021-10-28 23:31:39,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:31:39,936 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:31:39,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:31:39,943 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:31:39,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:31:39,951 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:31:40,016 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2021-10-28 23:31:40,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:31:40,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:31:40,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:31:40,109 INFO L87 Difference]: Start difference. First operand 14 states and 19 transitions. cyclomatic complexity: 8 Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:31:40,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:31:40,148 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2021-10-28 23:31:40,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:31:40,149 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 17 transitions. [2021-10-28 23:31:40,150 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2021-10-28 23:31:40,151 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 14 states and 16 transitions. [2021-10-28 23:31:40,151 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2021-10-28 23:31:40,151 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2021-10-28 23:31:40,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 16 transitions. [2021-10-28 23:31:40,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:31:40,152 INFO L681 BuchiCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-10-28 23:31:40,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 16 transitions. [2021-10-28 23:31:40,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2021-10-28 23:31:40,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 12 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) [2021-10-28 23:31:40,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2021-10-28 23:31:40,154 INFO L704 BuchiCegarLoop]: Abstraction has 13 states and 15 transitions. [2021-10-28 23:31:40,154 INFO L587 BuchiCegarLoop]: Abstraction has 13 states and 15 transitions. [2021-10-28 23:31:40,154 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-28 23:31:40,154 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 15 transitions. [2021-10-28 23:31:40,155 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2021-10-28 23:31:40,155 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:31:40,155 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:31:40,156 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-28 23:31:40,156 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-28 23:31:40,156 INFO L791 eck$LassoCheckResult]: Stem: 191#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 192#L-1 havoc main_#res;havoc main_#t~nondet8, main_#t~post7, main_#t~mem10, main_#t~post11, main_#t~post9, main_#t~mem13, main_#t~mem14, main_#t~post15, main_#t~post12, main_~max~0, main_~#str1~0.base, main_~#str1~0.offset, main_~#str2~0.base, main_~#str2~0.offset, main_~i~0, main_~j~0;main_~max~0 := 5;call main_~#str1~0.base, main_~#str1~0.offset := #Ultimate.allocOnStack((if main_~max~0 % 4294967296 % 4294967296 <= 2147483647 then main_~max~0 % 4294967296 % 4294967296 else main_~max~0 % 4294967296 % 4294967296 - 4294967296));call main_~#str2~0.base, main_~#str2~0.offset := #Ultimate.allocOnStack((if main_~max~0 % 4294967296 % 4294967296 <= 2147483647 then main_~max~0 % 4294967296 % 4294967296 else main_~max~0 % 4294967296 % 4294967296 - 4294967296));havoc main_~i~0;havoc main_~j~0;main_~i~0 := 0; 200#L18-3 assume !!(main_~i~0 % 4294967296 < main_~max~0 % 4294967296);call write~int(main_#t~nondet8, main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 194#L18-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 195#L18-3 assume !(main_~i~0 % 4294967296 < main_~max~0 % 4294967296); 201#L18-4 call write~int(0, main_~#str1~0.base, main_~#str1~0.offset + (if (main_~max~0 - 1) % 4294967296 % 4294967296 <= 2147483647 then (main_~max~0 - 1) % 4294967296 % 4294967296 else (main_~max~0 - 1) % 4294967296 % 4294967296 - 4294967296), 1);main_~j~0 := 0;main_~i~0 := (if (main_~max~0 - 1) % 4294967296 % 4294967296 <= 2147483647 then (main_~max~0 - 1) % 4294967296 % 4294967296 else (main_~max~0 - 1) % 4294967296 % 4294967296 - 4294967296); 199#L26-3 [2021-10-28 23:31:40,156 INFO L793 eck$LassoCheckResult]: Loop: 199#L26-3 assume !!(main_~i~0 >= 0);call main_#t~mem10 := read~int(main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);call write~int(main_#t~mem10, main_~#str2~0.base, main_~#str2~0.offset + main_~j~0, 1);havoc main_#t~mem10;main_#t~post11 := main_~j~0;main_~j~0 := 1 + main_#t~post11;havoc main_#t~post11; 198#L26-2 main_#t~post9 := main_~i~0;main_~i~0 := main_#t~post9 - 1;havoc main_#t~post9; 199#L26-3 [2021-10-28 23:31:40,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:31:40,157 INFO L85 PathProgramCache]: Analyzing trace with hash 889660429, now seen corresponding path program 1 times [2021-10-28 23:31:40,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:31:40,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890846366] [2021-10-28 23:31:40,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:31:40,157 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:31:40,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:31:40,276 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:31:40,276 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:31:40,276 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890846366] [2021-10-28 23:31:40,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890846366] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:31:40,277 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621531448] [2021-10-28 23:31:40,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:31:40,277 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:31:40,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:31:40,278 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:31:40,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-10-28 23:31:40,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:31:40,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 23:31:40,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:31:40,414 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:31:40,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621531448] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:31:40,415 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:31:40,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-10-28 23:31:40,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767032035] [2021-10-28 23:31:40,416 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 23:31:40,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:31:40,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1731, now seen corresponding path program 2 times [2021-10-28 23:31:40,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:31:40,416 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958900308] [2021-10-28 23:31:40,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:31:40,417 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:31:40,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:31:40,423 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:31:40,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:31:40,430 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:31:40,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:31:40,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:31:40,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:31:40,528 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. cyclomatic complexity: 5 Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:31:40,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:31:40,594 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2021-10-28 23:31:40,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:31:40,595 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 18 transitions. [2021-10-28 23:31:40,596 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2021-10-28 23:31:40,597 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 16 states and 18 transitions. [2021-10-28 23:31:40,597 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2021-10-28 23:31:40,597 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2021-10-28 23:31:40,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 18 transitions. [2021-10-28 23:31:40,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:31:40,597 INFO L681 BuchiCegarLoop]: Abstraction has 16 states and 18 transitions. [2021-10-28 23:31:40,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 18 transitions. [2021-10-28 23:31:40,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2021-10-28 23:31:40,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 14 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) [2021-10-28 23:31:40,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2021-10-28 23:31:40,600 INFO L704 BuchiCegarLoop]: Abstraction has 15 states and 17 transitions. [2021-10-28 23:31:40,600 INFO L587 BuchiCegarLoop]: Abstraction has 15 states and 17 transitions. [2021-10-28 23:31:40,600 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-28 23:31:40,600 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 17 transitions. [2021-10-28 23:31:40,601 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2021-10-28 23:31:40,601 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:31:40,601 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:31:40,602 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1] [2021-10-28 23:31:40,602 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-28 23:31:40,602 INFO L791 eck$LassoCheckResult]: Stem: 244#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 245#L-1 havoc main_#res;havoc main_#t~nondet8, main_#t~post7, main_#t~mem10, main_#t~post11, main_#t~post9, main_#t~mem13, main_#t~mem14, main_#t~post15, main_#t~post12, main_~max~0, main_~#str1~0.base, main_~#str1~0.offset, main_~#str2~0.base, main_~#str2~0.offset, main_~i~0, main_~j~0;main_~max~0 := 5;call main_~#str1~0.base, main_~#str1~0.offset := #Ultimate.allocOnStack((if main_~max~0 % 4294967296 % 4294967296 <= 2147483647 then main_~max~0 % 4294967296 % 4294967296 else main_~max~0 % 4294967296 % 4294967296 - 4294967296));call main_~#str2~0.base, main_~#str2~0.offset := #Ultimate.allocOnStack((if main_~max~0 % 4294967296 % 4294967296 <= 2147483647 then main_~max~0 % 4294967296 % 4294967296 else main_~max~0 % 4294967296 % 4294967296 - 4294967296));havoc main_~i~0;havoc main_~j~0;main_~i~0 := 0; 253#L18-3 assume !!(main_~i~0 % 4294967296 < main_~max~0 % 4294967296);call write~int(main_#t~nondet8, main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 247#L18-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 248#L18-3 assume !!(main_~i~0 % 4294967296 < main_~max~0 % 4294967296);call write~int(main_#t~nondet8, main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 254#L18-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 256#L18-3 assume !(main_~i~0 % 4294967296 < main_~max~0 % 4294967296); 255#L18-4 call write~int(0, main_~#str1~0.base, main_~#str1~0.offset + (if (main_~max~0 - 1) % 4294967296 % 4294967296 <= 2147483647 then (main_~max~0 - 1) % 4294967296 % 4294967296 else (main_~max~0 - 1) % 4294967296 % 4294967296 - 4294967296), 1);main_~j~0 := 0;main_~i~0 := (if (main_~max~0 - 1) % 4294967296 % 4294967296 <= 2147483647 then (main_~max~0 - 1) % 4294967296 % 4294967296 else (main_~max~0 - 1) % 4294967296 % 4294967296 - 4294967296); 252#L26-3 [2021-10-28 23:31:40,602 INFO L793 eck$LassoCheckResult]: Loop: 252#L26-3 assume !!(main_~i~0 >= 0);call main_#t~mem10 := read~int(main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);call write~int(main_#t~mem10, main_~#str2~0.base, main_~#str2~0.offset + main_~j~0, 1);havoc main_#t~mem10;main_#t~post11 := main_~j~0;main_~j~0 := 1 + main_#t~post11;havoc main_#t~post11; 251#L26-2 main_#t~post9 := main_~i~0;main_~i~0 := main_#t~post9 - 1;havoc main_#t~post9; 252#L26-3 [2021-10-28 23:31:40,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:31:40,603 INFO L85 PathProgramCache]: Analyzing trace with hash 265236367, now seen corresponding path program 2 times [2021-10-28 23:31:40,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:31:40,603 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490749297] [2021-10-28 23:31:40,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:31:40,604 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:31:40,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:31:40,768 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:31:40,768 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:31:40,768 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490749297] [2021-10-28 23:31:40,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490749297] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:31:40,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580775749] [2021-10-28 23:31:40,769 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 23:31:40,769 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:31:40,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:31:40,771 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:31:40,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-10-28 23:31:40,862 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 23:31:40,862 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:31:40,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-28 23:31:40,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:31:40,972 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 51 [2021-10-28 23:31:41,005 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-10-28 23:31:41,006 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 52 [2021-10-28 23:31:41,027 INFO L354 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2021-10-28 23:31:41,028 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 56 [2021-10-28 23:31:41,091 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-10-28 23:31:41,476 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:31:41,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580775749] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:31:41,476 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:31:41,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2021-10-28 23:31:41,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831153176] [2021-10-28 23:31:41,477 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 23:31:41,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:31:41,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1731, now seen corresponding path program 3 times [2021-10-28 23:31:41,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:31:41,483 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598619904] [2021-10-28 23:31:41,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:31:41,486 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:31:41,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:31:41,495 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:31:41,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:31:41,515 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:31:41,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:31:41,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 23:31:41,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:31:41,614 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. cyclomatic complexity: 5 Second operand has 9 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:31:41,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:31:41,776 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2021-10-28 23:31:41,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:31:41,776 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 20 transitions. [2021-10-28 23:31:41,777 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2021-10-28 23:31:41,778 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 18 states and 20 transitions. [2021-10-28 23:31:41,778 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2021-10-28 23:31:41,778 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2021-10-28 23:31:41,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 20 transitions. [2021-10-28 23:31:41,779 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:31:41,779 INFO L681 BuchiCegarLoop]: Abstraction has 18 states and 20 transitions. [2021-10-28 23:31:41,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 20 transitions. [2021-10-28 23:31:41,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2021-10-28 23:31:41,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 16 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) [2021-10-28 23:31:41,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-10-28 23:31:41,781 INFO L704 BuchiCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-10-28 23:31:41,781 INFO L587 BuchiCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-10-28 23:31:41,781 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-28 23:31:41,782 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 19 transitions. [2021-10-28 23:31:41,782 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2021-10-28 23:31:41,782 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:31:41,783 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:31:41,783 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 3, 1, 1, 1, 1] [2021-10-28 23:31:41,783 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-28 23:31:41,783 INFO L791 eck$LassoCheckResult]: Stem: 310#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 311#L-1 havoc main_#res;havoc main_#t~nondet8, main_#t~post7, main_#t~mem10, main_#t~post11, main_#t~post9, main_#t~mem13, main_#t~mem14, main_#t~post15, main_#t~post12, main_~max~0, main_~#str1~0.base, main_~#str1~0.offset, main_~#str2~0.base, main_~#str2~0.offset, main_~i~0, main_~j~0;main_~max~0 := 5;call main_~#str1~0.base, main_~#str1~0.offset := #Ultimate.allocOnStack((if main_~max~0 % 4294967296 % 4294967296 <= 2147483647 then main_~max~0 % 4294967296 % 4294967296 else main_~max~0 % 4294967296 % 4294967296 - 4294967296));call main_~#str2~0.base, main_~#str2~0.offset := #Ultimate.allocOnStack((if main_~max~0 % 4294967296 % 4294967296 <= 2147483647 then main_~max~0 % 4294967296 % 4294967296 else main_~max~0 % 4294967296 % 4294967296 - 4294967296));havoc main_~i~0;havoc main_~j~0;main_~i~0 := 0; 319#L18-3 assume !!(main_~i~0 % 4294967296 < main_~max~0 % 4294967296);call write~int(main_#t~nondet8, main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 320#L18-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 321#L18-3 assume !!(main_~i~0 % 4294967296 < main_~max~0 % 4294967296);call write~int(main_#t~nondet8, main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 313#L18-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 314#L18-3 assume !!(main_~i~0 % 4294967296 < main_~max~0 % 4294967296);call write~int(main_#t~nondet8, main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 324#L18-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 323#L18-3 assume !(main_~i~0 % 4294967296 < main_~max~0 % 4294967296); 322#L18-4 call write~int(0, main_~#str1~0.base, main_~#str1~0.offset + (if (main_~max~0 - 1) % 4294967296 % 4294967296 <= 2147483647 then (main_~max~0 - 1) % 4294967296 % 4294967296 else (main_~max~0 - 1) % 4294967296 % 4294967296 - 4294967296), 1);main_~j~0 := 0;main_~i~0 := (if (main_~max~0 - 1) % 4294967296 % 4294967296 <= 2147483647 then (main_~max~0 - 1) % 4294967296 % 4294967296 else (main_~max~0 - 1) % 4294967296 % 4294967296 - 4294967296); 318#L26-3 [2021-10-28 23:31:41,784 INFO L793 eck$LassoCheckResult]: Loop: 318#L26-3 assume !!(main_~i~0 >= 0);call main_#t~mem10 := read~int(main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);call write~int(main_#t~mem10, main_~#str2~0.base, main_~#str2~0.offset + main_~j~0, 1);havoc main_#t~mem10;main_#t~post11 := main_~j~0;main_~j~0 := 1 + main_#t~post11;havoc main_#t~post11; 317#L26-2 main_#t~post9 := main_~i~0;main_~i~0 := main_#t~post9 - 1;havoc main_#t~post9; 318#L26-3 [2021-10-28 23:31:41,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:31:41,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1489134225, now seen corresponding path program 3 times [2021-10-28 23:31:41,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:31:41,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921005803] [2021-10-28 23:31:41,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:31:41,784 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:31:41,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:31:41,955 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:31:41,956 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:31:41,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921005803] [2021-10-28 23:31:41,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921005803] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:31:41,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468260573] [2021-10-28 23:31:41,956 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 23:31:41,956 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:31:41,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:31:41,988 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:31:42,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-10-28 23:31:42,103 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-28 23:31:42,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:31:42,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-28 23:31:42,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:31:42,152 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 51 [2021-10-28 23:31:42,173 INFO L354 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2021-10-28 23:31:42,174 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 52 [2021-10-28 23:31:42,191 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-10-28 23:31:42,192 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 56 [2021-10-28 23:31:42,241 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-10-28 23:31:42,644 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:31:42,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1468260573] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:31:42,645 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:31:42,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2021-10-28 23:31:42,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887914996] [2021-10-28 23:31:42,646 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 23:31:42,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:31:42,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1731, now seen corresponding path program 4 times [2021-10-28 23:31:42,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:31:42,647 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977789189] [2021-10-28 23:31:42,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:31:42,647 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:31:42,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:31:42,657 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:31:42,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:31:42,665 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:31:42,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:31:42,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 23:31:42,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-10-28 23:31:42,761 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. cyclomatic complexity: 5 Second operand has 11 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:31:42,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:31:42,903 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2021-10-28 23:31:42,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:31:42,904 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 22 transitions. [2021-10-28 23:31:42,905 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2021-10-28 23:31:42,905 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 20 states and 22 transitions. [2021-10-28 23:31:42,905 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2021-10-28 23:31:42,905 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2021-10-28 23:31:42,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 22 transitions. [2021-10-28 23:31:42,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:31:42,906 INFO L681 BuchiCegarLoop]: Abstraction has 20 states and 22 transitions. [2021-10-28 23:31:42,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 22 transitions. [2021-10-28 23:31:42,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2021-10-28 23:31:42,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 19 states have (on average 1.105263157894737) internal successors, (21), 18 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) [2021-10-28 23:31:42,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-10-28 23:31:42,909 INFO L704 BuchiCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-10-28 23:31:42,909 INFO L587 BuchiCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-10-28 23:31:42,909 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-10-28 23:31:42,909 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 21 transitions. [2021-10-28 23:31:42,910 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2021-10-28 23:31:42,910 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:31:42,910 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:31:42,910 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [4, 4, 1, 1, 1, 1] [2021-10-28 23:31:42,910 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-28 23:31:42,911 INFO L791 eck$LassoCheckResult]: Stem: 389#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 390#L-1 havoc main_#res;havoc main_#t~nondet8, main_#t~post7, main_#t~mem10, main_#t~post11, main_#t~post9, main_#t~mem13, main_#t~mem14, main_#t~post15, main_#t~post12, main_~max~0, main_~#str1~0.base, main_~#str1~0.offset, main_~#str2~0.base, main_~#str2~0.offset, main_~i~0, main_~j~0;main_~max~0 := 5;call main_~#str1~0.base, main_~#str1~0.offset := #Ultimate.allocOnStack((if main_~max~0 % 4294967296 % 4294967296 <= 2147483647 then main_~max~0 % 4294967296 % 4294967296 else main_~max~0 % 4294967296 % 4294967296 - 4294967296));call main_~#str2~0.base, main_~#str2~0.offset := #Ultimate.allocOnStack((if main_~max~0 % 4294967296 % 4294967296 <= 2147483647 then main_~max~0 % 4294967296 % 4294967296 else main_~max~0 % 4294967296 % 4294967296 - 4294967296));havoc main_~i~0;havoc main_~j~0;main_~i~0 := 0; 397#L18-3 assume !!(main_~i~0 % 4294967296 < main_~max~0 % 4294967296);call write~int(main_#t~nondet8, main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 398#L18-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 399#L18-3 assume !!(main_~i~0 % 4294967296 < main_~max~0 % 4294967296);call write~int(main_#t~nondet8, main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 391#L18-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 392#L18-3 assume !!(main_~i~0 % 4294967296 < main_~max~0 % 4294967296);call write~int(main_#t~nondet8, main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 404#L18-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 403#L18-3 assume !!(main_~i~0 % 4294967296 < main_~max~0 % 4294967296);call write~int(main_#t~nondet8, main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 402#L18-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 401#L18-3 assume !(main_~i~0 % 4294967296 < main_~max~0 % 4294967296); 400#L18-4 call write~int(0, main_~#str1~0.base, main_~#str1~0.offset + (if (main_~max~0 - 1) % 4294967296 % 4294967296 <= 2147483647 then (main_~max~0 - 1) % 4294967296 % 4294967296 else (main_~max~0 - 1) % 4294967296 % 4294967296 - 4294967296), 1);main_~j~0 := 0;main_~i~0 := (if (main_~max~0 - 1) % 4294967296 % 4294967296 <= 2147483647 then (main_~max~0 - 1) % 4294967296 % 4294967296 else (main_~max~0 - 1) % 4294967296 % 4294967296 - 4294967296); 396#L26-3 [2021-10-28 23:31:42,911 INFO L793 eck$LassoCheckResult]: Loop: 396#L26-3 assume !!(main_~i~0 >= 0);call main_#t~mem10 := read~int(main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);call write~int(main_#t~mem10, main_~#str2~0.base, main_~#str2~0.offset + main_~j~0, 1);havoc main_#t~mem10;main_#t~post11 := main_~j~0;main_~j~0 := 1 + main_#t~post11;havoc main_#t~post11; 395#L26-2 main_#t~post9 := main_~i~0;main_~i~0 := main_#t~post9 - 1;havoc main_#t~post9; 396#L26-3 [2021-10-28 23:31:42,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:31:42,911 INFO L85 PathProgramCache]: Analyzing trace with hash 833936659, now seen corresponding path program 4 times [2021-10-28 23:31:42,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:31:42,911 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56179449] [2021-10-28 23:31:42,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:31:42,912 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:31:42,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:31:43,135 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:31:43,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:31:43,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56179449] [2021-10-28 23:31:43,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56179449] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:31:43,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549538039] [2021-10-28 23:31:43,136 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-28 23:31:43,136 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:31:43,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:31:43,147 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:31:43,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-10-28 23:31:43,276 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-28 23:31:43,277 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:31:43,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-28 23:31:43,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:31:43,339 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-10-28 23:31:43,340 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 15 [2021-10-28 23:31:43,350 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-28 23:31:43,678 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:31:43,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549538039] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:31:43,679 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:31:43,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2021-10-28 23:31:43,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532253659] [2021-10-28 23:31:43,680 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 23:31:43,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:31:43,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1731, now seen corresponding path program 5 times [2021-10-28 23:31:43,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:31:43,682 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968015325] [2021-10-28 23:31:43,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:31:43,682 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:31:43,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:31:43,690 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:31:43,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:31:43,700 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:31:43,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:31:43,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-28 23:31:43,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-10-28 23:31:43,806 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. cyclomatic complexity: 5 Second operand has 13 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:31:43,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:31:43,985 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2021-10-28 23:31:43,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 23:31:43,985 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 24 transitions. [2021-10-28 23:31:43,986 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2021-10-28 23:31:43,987 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 22 states and 24 transitions. [2021-10-28 23:31:43,987 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2021-10-28 23:31:43,987 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2021-10-28 23:31:43,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 24 transitions. [2021-10-28 23:31:43,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:31:43,988 INFO L681 BuchiCegarLoop]: Abstraction has 22 states and 24 transitions. [2021-10-28 23:31:43,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 24 transitions. [2021-10-28 23:31:43,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2021-10-28 23:31:43,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 20 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) [2021-10-28 23:31:43,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2021-10-28 23:31:43,990 INFO L704 BuchiCegarLoop]: Abstraction has 21 states and 23 transitions. [2021-10-28 23:31:43,990 INFO L587 BuchiCegarLoop]: Abstraction has 21 states and 23 transitions. [2021-10-28 23:31:43,990 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-10-28 23:31:43,991 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states and 23 transitions. [2021-10-28 23:31:43,991 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2021-10-28 23:31:43,991 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:31:43,991 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:31:43,992 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [5, 5, 1, 1, 1, 1] [2021-10-28 23:31:43,992 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-28 23:31:43,992 INFO L791 eck$LassoCheckResult]: Stem: 478#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 479#L-1 havoc main_#res;havoc main_#t~nondet8, main_#t~post7, main_#t~mem10, main_#t~post11, main_#t~post9, main_#t~mem13, main_#t~mem14, main_#t~post15, main_#t~post12, main_~max~0, main_~#str1~0.base, main_~#str1~0.offset, main_~#str2~0.base, main_~#str2~0.offset, main_~i~0, main_~j~0;main_~max~0 := 5;call main_~#str1~0.base, main_~#str1~0.offset := #Ultimate.allocOnStack((if main_~max~0 % 4294967296 % 4294967296 <= 2147483647 then main_~max~0 % 4294967296 % 4294967296 else main_~max~0 % 4294967296 % 4294967296 - 4294967296));call main_~#str2~0.base, main_~#str2~0.offset := #Ultimate.allocOnStack((if main_~max~0 % 4294967296 % 4294967296 <= 2147483647 then main_~max~0 % 4294967296 % 4294967296 else main_~max~0 % 4294967296 % 4294967296 - 4294967296));havoc main_~i~0;havoc main_~j~0;main_~i~0 := 0; 487#L18-3 assume !!(main_~i~0 % 4294967296 < main_~max~0 % 4294967296);call write~int(main_#t~nondet8, main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 488#L18-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 489#L18-3 assume !!(main_~i~0 % 4294967296 < main_~max~0 % 4294967296);call write~int(main_#t~nondet8, main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 481#L18-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 482#L18-3 assume !!(main_~i~0 % 4294967296 < main_~max~0 % 4294967296);call write~int(main_#t~nondet8, main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 496#L18-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 495#L18-3 assume !!(main_~i~0 % 4294967296 < main_~max~0 % 4294967296);call write~int(main_#t~nondet8, main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 494#L18-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 493#L18-3 assume !!(main_~i~0 % 4294967296 < main_~max~0 % 4294967296);call write~int(main_#t~nondet8, main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 492#L18-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 491#L18-3 assume !(main_~i~0 % 4294967296 < main_~max~0 % 4294967296); 490#L18-4 call write~int(0, main_~#str1~0.base, main_~#str1~0.offset + (if (main_~max~0 - 1) % 4294967296 % 4294967296 <= 2147483647 then (main_~max~0 - 1) % 4294967296 % 4294967296 else (main_~max~0 - 1) % 4294967296 % 4294967296 - 4294967296), 1);main_~j~0 := 0;main_~i~0 := (if (main_~max~0 - 1) % 4294967296 % 4294967296 <= 2147483647 then (main_~max~0 - 1) % 4294967296 % 4294967296 else (main_~max~0 - 1) % 4294967296 % 4294967296 - 4294967296); 486#L26-3 [2021-10-28 23:31:43,993 INFO L793 eck$LassoCheckResult]: Loop: 486#L26-3 assume !!(main_~i~0 >= 0);call main_#t~mem10 := read~int(main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);call write~int(main_#t~mem10, main_~#str2~0.base, main_~#str2~0.offset + main_~j~0, 1);havoc main_#t~mem10;main_#t~post11 := main_~j~0;main_~j~0 := 1 + main_#t~post11;havoc main_#t~post11; 485#L26-2 main_#t~post9 := main_~i~0;main_~i~0 := main_#t~post9 - 1;havoc main_#t~post9; 486#L26-3 [2021-10-28 23:31:43,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:31:43,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1745699051, now seen corresponding path program 5 times [2021-10-28 23:31:43,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:31:43,993 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306676627] [2021-10-28 23:31:43,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:31:43,994 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:31:44,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:31:44,020 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:31:44,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:31:44,079 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:31:44,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:31:44,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1731, now seen corresponding path program 6 times [2021-10-28 23:31:44,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:31:44,080 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970791993] [2021-10-28 23:31:44,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:31:44,080 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:31:44,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:31:44,085 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:31:44,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:31:44,090 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:31:44,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:31:44,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1715425495, now seen corresponding path program 1 times [2021-10-28 23:31:44,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:31:44,091 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442318924] [2021-10-28 23:31:44,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:31:44,092 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:31:44,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:31:44,122 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:31:44,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:31:44,184 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:31:49,158 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:31:49,158 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:31:49,158 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:31:49,158 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:31:49,158 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 23:31:49,158 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:31:49,158 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:31:49,158 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:31:49,158 INFO L133 ssoRankerPreferences]: Filename of dumped script: invert_string-3.c_Iteration7_Lasso [2021-10-28 23:31:49,158 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:31:49,158 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:31:49,159 WARN L313 ript$VariableManager]: TermVariabe aux_div_aux_mod_v_ULTIMATE.start_main_~i~0_60_61_63 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:49,159 WARN L313 ript$VariableManager]: TermVariabe aux_div_v_ULTIMATE.start_main_~i~0_60_61 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:49,159 WARN L313 ript$VariableManager]: TermVariabe aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0_60_61_63 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:31:49,164 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:31:49,176 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:31:49,703 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:31:49,705 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:31:49,708 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:31:49,719 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:31:49,722 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:31:49,725 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:31:49,728 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:31:49,731 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:31:49,733 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:31:49,734 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:31:49,736 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:31:49,739 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:31:49,741 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:31:50,342 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:31:50,342 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 23:31:50,342 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:31:50,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:31:50,345 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:31:50,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-10-28 23:31:50,351 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:31:50,362 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:31:50,362 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:31:50,362 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:31:50,362 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:31:50,374 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 23:31:50,374 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 23:31:50,381 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:31:50,405 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2021-10-28 23:31:50,406 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:31:50,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:31:50,407 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:31:50,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-10-28 23:31:50,409 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:31:50,417 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:31:50,417 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:31:50,418 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:31:50,418 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:31:50,419 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 23:31:50,419 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 23:31:50,422 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:31:50,447 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2021-10-28 23:31:50,448 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:31:50,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:31:50,449 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:31:50,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-10-28 23:31:50,451 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:31:50,460 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:31:50,460 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:31:50,460 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:31:50,460 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:31:50,463 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 23:31:50,463 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 23:31:50,484 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:31:50,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2021-10-28 23:31:50,515 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:31:50,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:31:50,516 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:31:50,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2021-10-28 23:31:50,518 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:31:50,526 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:31:50,527 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:31:50,527 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:31:50,527 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:31:50,528 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 23:31:50,528 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 23:31:50,531 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:31:50,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2021-10-28 23:31:50,557 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:31:50,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:31:50,558 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:31:50,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2021-10-28 23:31:50,560 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:31:50,569 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:31:50,569 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:31:50,569 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:31:50,569 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:31:50,569 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:31:50,578 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:31:50,578 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:31:50,581 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:31:50,605 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Ended with exit code 0 [2021-10-28 23:31:50,606 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:31:50,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:31:50,615 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:31:50,632 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 [2021-10-28 23:31:50,645 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:31:50,645 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:31:50,645 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:31:50,645 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:31:50,649 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 23:31:50,649 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 23:31:50,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2021-10-28 23:31:50,663 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:31:50,704 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2021-10-28 23:31:50,704 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:31:50,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:31:50,707 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:31:50,714 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:31:50,725 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:31:50,726 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:31:50,726 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:31:50,726 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:31:50,728 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 23:31:50,729 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 23:31:50,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2021-10-28 23:31:50,743 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:31:50,780 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Ended with exit code 0 [2021-10-28 23:31:50,781 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:31:50,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:31:50,782 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:31:50,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2021-10-28 23:31:50,784 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:31:50,793 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:31:50,794 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:31:50,794 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:31:50,794 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:31:50,804 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 23:31:50,804 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 23:31:50,831 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 23:31:50,944 INFO L443 ModelExtractionUtils]: Simplification made 23 calls to the SMT solver. [2021-10-28 23:31:50,944 INFO L444 ModelExtractionUtils]: 7 out of 28 variables were initially zero. Simplification set additionally 15 variables to zero. [2021-10-28 23:31:50,944 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:31:50,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:31:50,946 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:31:50,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2021-10-28 23:31:50,948 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 23:31:50,958 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2021-10-28 23:31:50,958 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 23:31:50,959 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_main_~#str1~0.base)_2, ULTIMATE.start_main_~j~0) = 6442450943*v_rep(select #length ULTIMATE.start_main_~#str1~0.base)_2 - 1*ULTIMATE.start_main_~j~0 Supporting invariants [-3*ULTIMATE.start_main_~i~0 + 12884901885*v_rep(select #length ULTIMATE.start_main_~#str1~0.base)_2 - 2*ULTIMATE.start_main_~j~0 >= 0] [2021-10-28 23:31:50,984 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Ended with exit code 0 [2021-10-28 23:31:51,052 INFO L297 tatePredicateManager]: 16 out of 17 supporting invariants were superfluous and have been removed [2021-10-28 23:31:51,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:31:51,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:31:51,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-28 23:31:51,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:31:51,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:31:51,425 WARN L261 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 23:31:51,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:31:51,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:31:51,482 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.7 stem predicates 2 loop predicates [2021-10-28 23:31:51,482 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states and 23 transitions. cyclomatic complexity: 5 Second operand has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:31:51,759 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 21 states and 23 transitions. cyclomatic complexity: 5. Second operand has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 26 states and 30 transitions. Complement of second has 11 states. [2021-10-28 23:31:51,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 6 stem states 1 non-accepting loop states 2 accepting loop states [2021-10-28 23:31:51,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:31:51,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 16 transitions. [2021-10-28 23:31:51,761 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 16 transitions. Stem has 14 letters. Loop has 2 letters. [2021-10-28 23:31:51,762 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:31:51,762 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 23:31:51,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:31:51,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:31:51,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-28 23:31:51,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:31:51,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2021-10-28 23:31:52,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:31:52,141 WARN L261 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 23:31:52,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:31:52,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:31:52,195 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.7 stem predicates 2 loop predicates [2021-10-28 23:31:52,195 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states and 23 transitions. cyclomatic complexity: 5 Second operand has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:31:52,496 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 21 states and 23 transitions. cyclomatic complexity: 5. Second operand has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 24 states and 29 transitions. Complement of second has 12 states. [2021-10-28 23:31:52,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 6 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 23:31:52,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:31:52,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 17 transitions. [2021-10-28 23:31:52,498 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 17 transitions. Stem has 14 letters. Loop has 2 letters. [2021-10-28 23:31:52,498 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:31:52,498 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 17 transitions. Stem has 16 letters. Loop has 2 letters. [2021-10-28 23:31:52,498 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:31:52,498 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 17 transitions. Stem has 14 letters. Loop has 4 letters. [2021-10-28 23:31:52,499 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:31:52,499 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 29 transitions. [2021-10-28 23:31:52,500 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-10-28 23:31:52,501 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 22 states and 25 transitions. [2021-10-28 23:31:52,501 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2021-10-28 23:31:52,501 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2021-10-28 23:31:52,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 25 transitions. [2021-10-28 23:31:52,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:31:52,501 INFO L681 BuchiCegarLoop]: Abstraction has 22 states and 25 transitions. [2021-10-28 23:31:52,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 25 transitions. [2021-10-28 23:31:52,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-10-28 23:31:52,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 21 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) [2021-10-28 23:31:52,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2021-10-28 23:31:52,504 INFO L704 BuchiCegarLoop]: Abstraction has 22 states and 25 transitions. [2021-10-28 23:31:52,504 INFO L587 BuchiCegarLoop]: Abstraction has 22 states and 25 transitions. [2021-10-28 23:31:52,504 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-10-28 23:31:52,504 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states and 25 transitions. [2021-10-28 23:31:52,505 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-10-28 23:31:52,505 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:31:52,505 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:31:52,506 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [5, 5, 1, 1, 1, 1, 1, 1] [2021-10-28 23:31:52,506 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-28 23:31:52,506 INFO L791 eck$LassoCheckResult]: Stem: 797#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 798#L-1 havoc main_#res;havoc main_#t~nondet8, main_#t~post7, main_#t~mem10, main_#t~post11, main_#t~post9, main_#t~mem13, main_#t~mem14, main_#t~post15, main_#t~post12, main_~max~0, main_~#str1~0.base, main_~#str1~0.offset, main_~#str2~0.base, main_~#str2~0.offset, main_~i~0, main_~j~0;main_~max~0 := 5;call main_~#str1~0.base, main_~#str1~0.offset := #Ultimate.allocOnStack((if main_~max~0 % 4294967296 % 4294967296 <= 2147483647 then main_~max~0 % 4294967296 % 4294967296 else main_~max~0 % 4294967296 % 4294967296 - 4294967296));call main_~#str2~0.base, main_~#str2~0.offset := #Ultimate.allocOnStack((if main_~max~0 % 4294967296 % 4294967296 <= 2147483647 then main_~max~0 % 4294967296 % 4294967296 else main_~max~0 % 4294967296 % 4294967296 - 4294967296));havoc main_~i~0;havoc main_~j~0;main_~i~0 := 0; 806#L18-3 assume !!(main_~i~0 % 4294967296 < main_~max~0 % 4294967296);call write~int(main_#t~nondet8, main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 800#L18-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 801#L18-3 assume !!(main_~i~0 % 4294967296 < main_~max~0 % 4294967296);call write~int(main_#t~nondet8, main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 807#L18-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 816#L18-3 assume !!(main_~i~0 % 4294967296 < main_~max~0 % 4294967296);call write~int(main_#t~nondet8, main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 815#L18-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 814#L18-3 assume !!(main_~i~0 % 4294967296 < main_~max~0 % 4294967296);call write~int(main_#t~nondet8, main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 813#L18-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 812#L18-3 assume !!(main_~i~0 % 4294967296 < main_~max~0 % 4294967296);call write~int(main_#t~nondet8, main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 811#L18-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 810#L18-3 assume !(main_~i~0 % 4294967296 < main_~max~0 % 4294967296); 808#L18-4 call write~int(0, main_~#str1~0.base, main_~#str1~0.offset + (if (main_~max~0 - 1) % 4294967296 % 4294967296 <= 2147483647 then (main_~max~0 - 1) % 4294967296 % 4294967296 else (main_~max~0 - 1) % 4294967296 % 4294967296 - 4294967296), 1);main_~j~0 := 0;main_~i~0 := (if (main_~max~0 - 1) % 4294967296 % 4294967296 <= 2147483647 then (main_~max~0 - 1) % 4294967296 % 4294967296 else (main_~max~0 - 1) % 4294967296 % 4294967296 - 4294967296); 809#L26-3 assume !(main_~i~0 >= 0); 803#L26-4 main_~j~0 := (if (main_~max~0 - 1) % 4294967296 % 4294967296 <= 2147483647 then (main_~max~0 - 1) % 4294967296 % 4294967296 else (main_~max~0 - 1) % 4294967296 % 4294967296 - 4294967296);main_~i~0 := 0; 796#L32-3 [2021-10-28 23:31:52,506 INFO L793 eck$LassoCheckResult]: Loop: 796#L32-3 assume !!(main_~i~0 % 4294967296 < main_~max~0 % 4294967296);call main_#t~mem13 := read~int(main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);call main_#t~mem14 := read~int(main_~#str2~0.base, main_~#str2~0.offset + main_~j~0, 1);__VERIFIER_assert_#in~cond := (if main_#t~mem13 == main_#t~mem14 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 802#L6 assume !(0 == __VERIFIER_assert_~cond); 799#L6-2 havoc main_#t~mem13;havoc main_#t~mem14;main_#t~post15 := main_~j~0;main_~j~0 := main_#t~post15 - 1;havoc main_#t~post15; 795#L32-2 main_#t~post12 := main_~i~0;main_~i~0 := 1 + main_#t~post12;havoc main_#t~post12; 796#L32-3 [2021-10-28 23:31:52,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:31:52,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1715425437, now seen corresponding path program 1 times [2021-10-28 23:31:52,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:31:52,507 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117310642] [2021-10-28 23:31:52,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:31:52,508 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:31:52,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:31:52,591 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-10-28 23:31:52,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:31:52,591 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117310642] [2021-10-28 23:31:52,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117310642] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:31:52,591 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:31:52,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:31:52,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070637450] [2021-10-28 23:31:52,592 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 23:31:52,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:31:52,593 INFO L85 PathProgramCache]: Analyzing trace with hash 2100362, now seen corresponding path program 1 times [2021-10-28 23:31:52,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:31:52,593 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970521902] [2021-10-28 23:31:52,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:31:52,593 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:31:52,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:31:52,601 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:31:52,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:31:52,609 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:31:52,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:31:52,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:31:52,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:31:52,757 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. cyclomatic complexity: 6 Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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) [2021-10-28 23:31:52,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:31:52,804 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2021-10-28 23:31:52,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:31:52,805 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 25 transitions. [2021-10-28 23:31:52,806 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-10-28 23:31:52,806 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 23 states and 25 transitions. [2021-10-28 23:31:52,806 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2021-10-28 23:31:52,806 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2021-10-28 23:31:52,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 25 transitions. [2021-10-28 23:31:52,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:31:52,807 INFO L681 BuchiCegarLoop]: Abstraction has 23 states and 25 transitions. [2021-10-28 23:31:52,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 25 transitions. [2021-10-28 23:31:52,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2021-10-28 23:31:52,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 21 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:31:52,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2021-10-28 23:31:52,810 INFO L704 BuchiCegarLoop]: Abstraction has 22 states and 24 transitions. [2021-10-28 23:31:52,810 INFO L587 BuchiCegarLoop]: Abstraction has 22 states and 24 transitions. [2021-10-28 23:31:52,810 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-10-28 23:31:52,810 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states and 24 transitions. [2021-10-28 23:31:52,810 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-10-28 23:31:52,811 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:31:52,811 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:31:52,811 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:31:52,811 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-28 23:31:52,812 INFO L791 eck$LassoCheckResult]: Stem: 852#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 853#L-1 havoc main_#res;havoc main_#t~nondet8, main_#t~post7, main_#t~mem10, main_#t~post11, main_#t~post9, main_#t~mem13, main_#t~mem14, main_#t~post15, main_#t~post12, main_~max~0, main_~#str1~0.base, main_~#str1~0.offset, main_~#str2~0.base, main_~#str2~0.offset, main_~i~0, main_~j~0;main_~max~0 := 5;call main_~#str1~0.base, main_~#str1~0.offset := #Ultimate.allocOnStack((if main_~max~0 % 4294967296 % 4294967296 <= 2147483647 then main_~max~0 % 4294967296 % 4294967296 else main_~max~0 % 4294967296 % 4294967296 - 4294967296));call main_~#str2~0.base, main_~#str2~0.offset := #Ultimate.allocOnStack((if main_~max~0 % 4294967296 % 4294967296 <= 2147483647 then main_~max~0 % 4294967296 % 4294967296 else main_~max~0 % 4294967296 % 4294967296 - 4294967296));havoc main_~i~0;havoc main_~j~0;main_~i~0 := 0; 860#L18-3 assume !!(main_~i~0 % 4294967296 < main_~max~0 % 4294967296);call write~int(main_#t~nondet8, main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 854#L18-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 855#L18-3 assume !!(main_~i~0 % 4294967296 < main_~max~0 % 4294967296);call write~int(main_#t~nondet8, main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 861#L18-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 870#L18-3 assume !!(main_~i~0 % 4294967296 < main_~max~0 % 4294967296);call write~int(main_#t~nondet8, main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 869#L18-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 868#L18-3 assume !!(main_~i~0 % 4294967296 < main_~max~0 % 4294967296);call write~int(main_#t~nondet8, main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 867#L18-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 866#L18-3 assume !!(main_~i~0 % 4294967296 < main_~max~0 % 4294967296);call write~int(main_#t~nondet8, main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 865#L18-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 864#L18-3 assume !(main_~i~0 % 4294967296 < main_~max~0 % 4294967296); 862#L18-4 call write~int(0, main_~#str1~0.base, main_~#str1~0.offset + (if (main_~max~0 - 1) % 4294967296 % 4294967296 <= 2147483647 then (main_~max~0 - 1) % 4294967296 % 4294967296 else (main_~max~0 - 1) % 4294967296 % 4294967296 - 4294967296), 1);main_~j~0 := 0;main_~i~0 := (if (main_~max~0 - 1) % 4294967296 % 4294967296 <= 2147483647 then (main_~max~0 - 1) % 4294967296 % 4294967296 else (main_~max~0 - 1) % 4294967296 % 4294967296 - 4294967296); 863#L26-3 assume !!(main_~i~0 >= 0);call main_#t~mem10 := read~int(main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);call write~int(main_#t~mem10, main_~#str2~0.base, main_~#str2~0.offset + main_~j~0, 1);havoc main_#t~mem10;main_#t~post11 := main_~j~0;main_~j~0 := 1 + main_#t~post11;havoc main_#t~post11; 857#L26-2 main_#t~post9 := main_~i~0;main_~i~0 := main_#t~post9 - 1;havoc main_#t~post9; 858#L26-3 assume !(main_~i~0 >= 0); 859#L26-4 main_~j~0 := (if (main_~max~0 - 1) % 4294967296 % 4294967296 <= 2147483647 then (main_~max~0 - 1) % 4294967296 % 4294967296 else (main_~max~0 - 1) % 4294967296 % 4294967296 - 4294967296);main_~i~0 := 0; 850#L32-3 [2021-10-28 23:31:52,812 INFO L793 eck$LassoCheckResult]: Loop: 850#L32-3 assume !!(main_~i~0 % 4294967296 < main_~max~0 % 4294967296);call main_#t~mem13 := read~int(main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);call main_#t~mem14 := read~int(main_~#str2~0.base, main_~#str2~0.offset + main_~j~0, 1);__VERIFIER_assert_#in~cond := (if main_#t~mem13 == main_#t~mem14 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 856#L6 assume !(0 == __VERIFIER_assert_~cond); 851#L6-2 havoc main_#t~mem13;havoc main_#t~mem14;main_#t~post15 := main_~j~0;main_~j~0 := main_#t~post15 - 1;havoc main_#t~post15; 849#L32-2 main_#t~post12 := main_~i~0;main_~i~0 := 1 + main_#t~post12;havoc main_#t~post12; 850#L32-3 [2021-10-28 23:31:52,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:31:52,812 INFO L85 PathProgramCache]: Analyzing trace with hash -743540257, now seen corresponding path program 1 times [2021-10-28 23:31:52,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:31:52,813 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216465910] [2021-10-28 23:31:52,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:31:52,813 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:31:52,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:31:52,984 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-10-28 23:31:52,984 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:31:52,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216465910] [2021-10-28 23:31:52,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216465910] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:31:52,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438724748] [2021-10-28 23:31:52,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:31:52,984 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:31:52,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:31:52,985 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:31:52,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2021-10-28 23:31:53,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:31:53,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 23:31:53,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:31:53,333 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-10-28 23:31:53,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438724748] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:31:53,334 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:31:53,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-10-28 23:31:53,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780246255] [2021-10-28 23:31:53,335 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 23:31:53,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:31:53,336 INFO L85 PathProgramCache]: Analyzing trace with hash 2100362, now seen corresponding path program 2 times [2021-10-28 23:31:53,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:31:53,336 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883092893] [2021-10-28 23:31:53,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:31:53,337 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:31:53,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:31:53,357 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:31:53,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:31:53,378 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:31:53,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:31:53,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 23:31:53,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:31:53,576 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. cyclomatic complexity: 5 Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:31:53,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:31:53,648 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2021-10-28 23:31:53,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:31:53,648 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 27 transitions. [2021-10-28 23:31:53,649 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-10-28 23:31:53,649 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 25 states and 27 transitions. [2021-10-28 23:31:53,650 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2021-10-28 23:31:53,650 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2021-10-28 23:31:53,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 27 transitions. [2021-10-28 23:31:53,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:31:53,651 INFO L681 BuchiCegarLoop]: Abstraction has 25 states and 27 transitions. [2021-10-28 23:31:53,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states and 27 transitions. [2021-10-28 23:31:53,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2021-10-28 23:31:53,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 23 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:31:53,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2021-10-28 23:31:53,653 INFO L704 BuchiCegarLoop]: Abstraction has 24 states and 26 transitions. [2021-10-28 23:31:53,653 INFO L587 BuchiCegarLoop]: Abstraction has 24 states and 26 transitions. [2021-10-28 23:31:53,654 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-10-28 23:31:53,654 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 26 transitions. [2021-10-28 23:31:53,654 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-10-28 23:31:53,655 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:31:53,655 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:31:53,656 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [5, 5, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-28 23:31:53,656 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-28 23:31:53,656 INFO L791 eck$LassoCheckResult]: Stem: 965#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 966#L-1 havoc main_#res;havoc main_#t~nondet8, main_#t~post7, main_#t~mem10, main_#t~post11, main_#t~post9, main_#t~mem13, main_#t~mem14, main_#t~post15, main_#t~post12, main_~max~0, main_~#str1~0.base, main_~#str1~0.offset, main_~#str2~0.base, main_~#str2~0.offset, main_~i~0, main_~j~0;main_~max~0 := 5;call main_~#str1~0.base, main_~#str1~0.offset := #Ultimate.allocOnStack((if main_~max~0 % 4294967296 % 4294967296 <= 2147483647 then main_~max~0 % 4294967296 % 4294967296 else main_~max~0 % 4294967296 % 4294967296 - 4294967296));call main_~#str2~0.base, main_~#str2~0.offset := #Ultimate.allocOnStack((if main_~max~0 % 4294967296 % 4294967296 <= 2147483647 then main_~max~0 % 4294967296 % 4294967296 else main_~max~0 % 4294967296 % 4294967296 - 4294967296));havoc main_~i~0;havoc main_~j~0;main_~i~0 := 0; 973#L18-3 assume !!(main_~i~0 % 4294967296 < main_~max~0 % 4294967296);call write~int(main_#t~nondet8, main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 967#L18-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 968#L18-3 assume !!(main_~i~0 % 4294967296 < main_~max~0 % 4294967296);call write~int(main_#t~nondet8, main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 974#L18-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 985#L18-3 assume !!(main_~i~0 % 4294967296 < main_~max~0 % 4294967296);call write~int(main_#t~nondet8, main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 984#L18-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 983#L18-3 assume !!(main_~i~0 % 4294967296 < main_~max~0 % 4294967296);call write~int(main_#t~nondet8, main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 982#L18-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 980#L18-3 assume !!(main_~i~0 % 4294967296 < main_~max~0 % 4294967296);call write~int(main_#t~nondet8, main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 979#L18-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 978#L18-3 assume !(main_~i~0 % 4294967296 < main_~max~0 % 4294967296); 975#L18-4 call write~int(0, main_~#str1~0.base, main_~#str1~0.offset + (if (main_~max~0 - 1) % 4294967296 % 4294967296 <= 2147483647 then (main_~max~0 - 1) % 4294967296 % 4294967296 else (main_~max~0 - 1) % 4294967296 % 4294967296 - 4294967296), 1);main_~j~0 := 0;main_~i~0 := (if (main_~max~0 - 1) % 4294967296 % 4294967296 <= 2147483647 then (main_~max~0 - 1) % 4294967296 % 4294967296 else (main_~max~0 - 1) % 4294967296 % 4294967296 - 4294967296); 976#L26-3 assume !!(main_~i~0 >= 0);call main_#t~mem10 := read~int(main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);call write~int(main_#t~mem10, main_~#str2~0.base, main_~#str2~0.offset + main_~j~0, 1);havoc main_#t~mem10;main_#t~post11 := main_~j~0;main_~j~0 := 1 + main_#t~post11;havoc main_#t~post11; 970#L26-2 main_#t~post9 := main_~i~0;main_~i~0 := main_#t~post9 - 1;havoc main_#t~post9; 971#L26-3 assume !!(main_~i~0 >= 0);call main_#t~mem10 := read~int(main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);call write~int(main_#t~mem10, main_~#str2~0.base, main_~#str2~0.offset + main_~j~0, 1);havoc main_#t~mem10;main_#t~post11 := main_~j~0;main_~j~0 := 1 + main_#t~post11;havoc main_#t~post11; 977#L26-2 main_#t~post9 := main_~i~0;main_~i~0 := main_#t~post9 - 1;havoc main_#t~post9; 981#L26-3 assume !(main_~i~0 >= 0); 972#L26-4 main_~j~0 := (if (main_~max~0 - 1) % 4294967296 % 4294967296 <= 2147483647 then (main_~max~0 - 1) % 4294967296 % 4294967296 else (main_~max~0 - 1) % 4294967296 % 4294967296 - 4294967296);main_~i~0 := 0; 963#L32-3 [2021-10-28 23:31:53,657 INFO L793 eck$LassoCheckResult]: Loop: 963#L32-3 assume !!(main_~i~0 % 4294967296 < main_~max~0 % 4294967296);call main_#t~mem13 := read~int(main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);call main_#t~mem14 := read~int(main_~#str2~0.base, main_~#str2~0.offset + main_~j~0, 1);__VERIFIER_assert_#in~cond := (if main_#t~mem13 == main_#t~mem14 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 969#L6 assume !(0 == __VERIFIER_assert_~cond); 964#L6-2 havoc main_#t~mem13;havoc main_#t~mem14;main_#t~post15 := main_~j~0;main_~j~0 := main_#t~post15 - 1;havoc main_#t~post15; 962#L32-2 main_#t~post12 := main_~i~0;main_~i~0 := 1 + main_#t~post12;havoc main_#t~post12; 963#L32-3 [2021-10-28 23:31:53,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:31:53,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1577559391, now seen corresponding path program 2 times [2021-10-28 23:31:53,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:31:53,658 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106108303] [2021-10-28 23:31:53,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:31:53,658 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:31:53,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:31:53,880 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-10-28 23:31:53,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:31:53,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106108303] [2021-10-28 23:31:53,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106108303] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:31:53,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244078545] [2021-10-28 23:31:53,880 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 23:31:53,881 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:31:53,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:31:53,883 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:31:53,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2021-10-28 23:31:54,061 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 23:31:54,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:31:54,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 23:31:54,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:31:54,319 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-10-28 23:31:54,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244078545] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:31:54,319 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:31:54,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2021-10-28 23:31:54,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761774062] [2021-10-28 23:31:54,321 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 23:31:54,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:31:54,321 INFO L85 PathProgramCache]: Analyzing trace with hash 2100362, now seen corresponding path program 3 times [2021-10-28 23:31:54,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:31:54,322 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070869453] [2021-10-28 23:31:54,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:31:54,322 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:31:54,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:31:54,333 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:31:54,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:31:54,352 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:31:54,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:31:54,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 23:31:54,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-10-28 23:31:54,555 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. cyclomatic complexity: 5 Second operand has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:31:54,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:31:54,739 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2021-10-28 23:31:54,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:31:54,740 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 29 transitions. [2021-10-28 23:31:54,741 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-10-28 23:31:54,741 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 27 states and 29 transitions. [2021-10-28 23:31:54,741 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2021-10-28 23:31:54,741 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2021-10-28 23:31:54,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 29 transitions. [2021-10-28 23:31:54,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:31:54,742 INFO L681 BuchiCegarLoop]: Abstraction has 27 states and 29 transitions. [2021-10-28 23:31:54,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 29 transitions. [2021-10-28 23:31:54,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2021-10-28 23:31:54,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 26 states have (on average 1.0769230769230769) internal successors, (28), 25 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:31:54,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2021-10-28 23:31:54,745 INFO L704 BuchiCegarLoop]: Abstraction has 26 states and 28 transitions. [2021-10-28 23:31:54,745 INFO L587 BuchiCegarLoop]: Abstraction has 26 states and 28 transitions. [2021-10-28 23:31:54,745 INFO L425 BuchiCegarLoop]: ======== Iteration 11============ [2021-10-28 23:31:54,745 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 26 states and 28 transitions. [2021-10-28 23:31:54,746 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-10-28 23:31:54,746 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:31:54,746 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:31:54,747 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [5, 5, 3, 3, 1, 1, 1, 1, 1, 1] [2021-10-28 23:31:54,747 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-28 23:31:54,748 INFO L791 eck$LassoCheckResult]: Stem: 1093#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 1094#L-1 havoc main_#res;havoc main_#t~nondet8, main_#t~post7, main_#t~mem10, main_#t~post11, main_#t~post9, main_#t~mem13, main_#t~mem14, main_#t~post15, main_#t~post12, main_~max~0, main_~#str1~0.base, main_~#str1~0.offset, main_~#str2~0.base, main_~#str2~0.offset, main_~i~0, main_~j~0;main_~max~0 := 5;call main_~#str1~0.base, main_~#str1~0.offset := #Ultimate.allocOnStack((if main_~max~0 % 4294967296 % 4294967296 <= 2147483647 then main_~max~0 % 4294967296 % 4294967296 else main_~max~0 % 4294967296 % 4294967296 - 4294967296));call main_~#str2~0.base, main_~#str2~0.offset := #Ultimate.allocOnStack((if main_~max~0 % 4294967296 % 4294967296 <= 2147483647 then main_~max~0 % 4294967296 % 4294967296 else main_~max~0 % 4294967296 % 4294967296 - 4294967296));havoc main_~i~0;havoc main_~j~0;main_~i~0 := 0; 1101#L18-3 assume !!(main_~i~0 % 4294967296 < main_~max~0 % 4294967296);call write~int(main_#t~nondet8, main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 1095#L18-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 1096#L18-3 assume !!(main_~i~0 % 4294967296 < main_~max~0 % 4294967296);call write~int(main_#t~nondet8, main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 1102#L18-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 1114#L18-3 assume !!(main_~i~0 % 4294967296 < main_~max~0 % 4294967296);call write~int(main_#t~nondet8, main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 1113#L18-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 1112#L18-3 assume !!(main_~i~0 % 4294967296 < main_~max~0 % 4294967296);call write~int(main_#t~nondet8, main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 1111#L18-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 1108#L18-3 assume !!(main_~i~0 % 4294967296 < main_~max~0 % 4294967296);call write~int(main_#t~nondet8, main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 1107#L18-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 1106#L18-3 assume !(main_~i~0 % 4294967296 < main_~max~0 % 4294967296); 1103#L18-4 call write~int(0, main_~#str1~0.base, main_~#str1~0.offset + (if (main_~max~0 - 1) % 4294967296 % 4294967296 <= 2147483647 then (main_~max~0 - 1) % 4294967296 % 4294967296 else (main_~max~0 - 1) % 4294967296 % 4294967296 - 4294967296), 1);main_~j~0 := 0;main_~i~0 := (if (main_~max~0 - 1) % 4294967296 % 4294967296 <= 2147483647 then (main_~max~0 - 1) % 4294967296 % 4294967296 else (main_~max~0 - 1) % 4294967296 % 4294967296 - 4294967296); 1104#L26-3 assume !!(main_~i~0 >= 0);call main_#t~mem10 := read~int(main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);call write~int(main_#t~mem10, main_~#str2~0.base, main_~#str2~0.offset + main_~j~0, 1);havoc main_#t~mem10;main_#t~post11 := main_~j~0;main_~j~0 := 1 + main_#t~post11;havoc main_#t~post11; 1098#L26-2 main_#t~post9 := main_~i~0;main_~i~0 := main_#t~post9 - 1;havoc main_#t~post9; 1099#L26-3 assume !!(main_~i~0 >= 0);call main_#t~mem10 := read~int(main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);call write~int(main_#t~mem10, main_~#str2~0.base, main_~#str2~0.offset + main_~j~0, 1);havoc main_#t~mem10;main_#t~post11 := main_~j~0;main_~j~0 := 1 + main_#t~post11;havoc main_#t~post11; 1105#L26-2 main_#t~post9 := main_~i~0;main_~i~0 := main_#t~post9 - 1;havoc main_#t~post9; 1115#L26-3 assume !!(main_~i~0 >= 0);call main_#t~mem10 := read~int(main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);call write~int(main_#t~mem10, main_~#str2~0.base, main_~#str2~0.offset + main_~j~0, 1);havoc main_#t~mem10;main_#t~post11 := main_~j~0;main_~j~0 := 1 + main_#t~post11;havoc main_#t~post11; 1110#L26-2 main_#t~post9 := main_~i~0;main_~i~0 := main_#t~post9 - 1;havoc main_#t~post9; 1109#L26-3 assume !(main_~i~0 >= 0); 1100#L26-4 main_~j~0 := (if (main_~max~0 - 1) % 4294967296 % 4294967296 <= 2147483647 then (main_~max~0 - 1) % 4294967296 % 4294967296 else (main_~max~0 - 1) % 4294967296 % 4294967296 - 4294967296);main_~i~0 := 0; 1091#L32-3 [2021-10-28 23:31:54,748 INFO L793 eck$LassoCheckResult]: Loop: 1091#L32-3 assume !!(main_~i~0 % 4294967296 < main_~max~0 % 4294967296);call main_#t~mem13 := read~int(main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);call main_#t~mem14 := read~int(main_~#str2~0.base, main_~#str2~0.offset + main_~j~0, 1);__VERIFIER_assert_#in~cond := (if main_#t~mem13 == main_#t~mem14 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1097#L6 assume !(0 == __VERIFIER_assert_~cond); 1092#L6-2 havoc main_#t~mem13;havoc main_#t~mem14;main_#t~post15 := main_~j~0;main_~j~0 := main_#t~post15 - 1;havoc main_#t~post15; 1090#L32-2 main_#t~post12 := main_~i~0;main_~i~0 := 1 + main_#t~post12;havoc main_#t~post12; 1091#L32-3 [2021-10-28 23:31:54,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:31:54,748 INFO L85 PathProgramCache]: Analyzing trace with hash 88937187, now seen corresponding path program 3 times [2021-10-28 23:31:54,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:31:54,749 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034909222] [2021-10-28 23:31:54,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:31:54,749 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:31:54,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:31:55,001 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-10-28 23:31:55,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:31:55,001 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034909222] [2021-10-28 23:31:55,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034909222] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:31:55,001 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724957013] [2021-10-28 23:31:55,001 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 23:31:55,001 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:31:55,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:31:55,003 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:31:55,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2021-10-28 23:31:55,213 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-28 23:31:55,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:31:55,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-28 23:31:55,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:31:55,444 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-10-28 23:31:55,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1724957013] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:31:55,444 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:31:55,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2021-10-28 23:31:55,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880348560] [2021-10-28 23:31:55,445 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 23:31:55,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:31:55,445 INFO L85 PathProgramCache]: Analyzing trace with hash 2100362, now seen corresponding path program 4 times [2021-10-28 23:31:55,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:31:55,445 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626843325] [2021-10-28 23:31:55,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:31:55,446 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:31:55,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:31:55,453 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:31:55,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:31:55,459 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:31:55,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:31:55,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-28 23:31:55,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-10-28 23:31:55,595 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. cyclomatic complexity: 5 Second operand has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:31:55,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:31:55,797 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2021-10-28 23:31:55,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 23:31:55,798 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 31 transitions. [2021-10-28 23:31:55,798 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-10-28 23:31:55,799 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 29 states and 31 transitions. [2021-10-28 23:31:55,799 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2021-10-28 23:31:55,799 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2021-10-28 23:31:55,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 31 transitions. [2021-10-28 23:31:55,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:31:55,800 INFO L681 BuchiCegarLoop]: Abstraction has 29 states and 31 transitions. [2021-10-28 23:31:55,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states and 31 transitions. [2021-10-28 23:31:55,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2021-10-28 23:31:55,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 27 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) [2021-10-28 23:31:55,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2021-10-28 23:31:55,803 INFO L704 BuchiCegarLoop]: Abstraction has 28 states and 30 transitions. [2021-10-28 23:31:55,803 INFO L587 BuchiCegarLoop]: Abstraction has 28 states and 30 transitions. [2021-10-28 23:31:55,803 INFO L425 BuchiCegarLoop]: ======== Iteration 12============ [2021-10-28 23:31:55,803 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 28 states and 30 transitions. [2021-10-28 23:31:55,804 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-10-28 23:31:55,804 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:31:55,804 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:31:55,805 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1] [2021-10-28 23:31:55,805 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-28 23:31:55,805 INFO L791 eck$LassoCheckResult]: Stem: 1235#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 1236#L-1 havoc main_#res;havoc main_#t~nondet8, main_#t~post7, main_#t~mem10, main_#t~post11, main_#t~post9, main_#t~mem13, main_#t~mem14, main_#t~post15, main_#t~post12, main_~max~0, main_~#str1~0.base, main_~#str1~0.offset, main_~#str2~0.base, main_~#str2~0.offset, main_~i~0, main_~j~0;main_~max~0 := 5;call main_~#str1~0.base, main_~#str1~0.offset := #Ultimate.allocOnStack((if main_~max~0 % 4294967296 % 4294967296 <= 2147483647 then main_~max~0 % 4294967296 % 4294967296 else main_~max~0 % 4294967296 % 4294967296 - 4294967296));call main_~#str2~0.base, main_~#str2~0.offset := #Ultimate.allocOnStack((if main_~max~0 % 4294967296 % 4294967296 <= 2147483647 then main_~max~0 % 4294967296 % 4294967296 else main_~max~0 % 4294967296 % 4294967296 - 4294967296));havoc main_~i~0;havoc main_~j~0;main_~i~0 := 0; 1243#L18-3 assume !!(main_~i~0 % 4294967296 < main_~max~0 % 4294967296);call write~int(main_#t~nondet8, main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 1238#L18-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 1239#L18-3 assume !!(main_~i~0 % 4294967296 < main_~max~0 % 4294967296);call write~int(main_#t~nondet8, main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 1244#L18-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 1256#L18-3 assume !!(main_~i~0 % 4294967296 < main_~max~0 % 4294967296);call write~int(main_#t~nondet8, main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 1255#L18-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 1254#L18-3 assume !!(main_~i~0 % 4294967296 < main_~max~0 % 4294967296);call write~int(main_#t~nondet8, main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 1253#L18-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 1252#L18-3 assume !!(main_~i~0 % 4294967296 < main_~max~0 % 4294967296);call write~int(main_#t~nondet8, main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 1249#L18-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 1248#L18-3 assume !(main_~i~0 % 4294967296 < main_~max~0 % 4294967296); 1245#L18-4 call write~int(0, main_~#str1~0.base, main_~#str1~0.offset + (if (main_~max~0 - 1) % 4294967296 % 4294967296 <= 2147483647 then (main_~max~0 - 1) % 4294967296 % 4294967296 else (main_~max~0 - 1) % 4294967296 % 4294967296 - 4294967296), 1);main_~j~0 := 0;main_~i~0 := (if (main_~max~0 - 1) % 4294967296 % 4294967296 <= 2147483647 then (main_~max~0 - 1) % 4294967296 % 4294967296 else (main_~max~0 - 1) % 4294967296 % 4294967296 - 4294967296); 1246#L26-3 assume !!(main_~i~0 >= 0);call main_#t~mem10 := read~int(main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);call write~int(main_#t~mem10, main_~#str2~0.base, main_~#str2~0.offset + main_~j~0, 1);havoc main_#t~mem10;main_#t~post11 := main_~j~0;main_~j~0 := 1 + main_#t~post11;havoc main_#t~post11; 1240#L26-2 main_#t~post9 := main_~i~0;main_~i~0 := main_#t~post9 - 1;havoc main_#t~post9; 1241#L26-3 assume !!(main_~i~0 >= 0);call main_#t~mem10 := read~int(main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);call write~int(main_#t~mem10, main_~#str2~0.base, main_~#str2~0.offset + main_~j~0, 1);havoc main_#t~mem10;main_#t~post11 := main_~j~0;main_~j~0 := 1 + main_#t~post11;havoc main_#t~post11; 1247#L26-2 main_#t~post9 := main_~i~0;main_~i~0 := main_#t~post9 - 1;havoc main_#t~post9; 1259#L26-3 assume !!(main_~i~0 >= 0);call main_#t~mem10 := read~int(main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);call write~int(main_#t~mem10, main_~#str2~0.base, main_~#str2~0.offset + main_~j~0, 1);havoc main_#t~mem10;main_#t~post11 := main_~j~0;main_~j~0 := 1 + main_#t~post11;havoc main_#t~post11; 1258#L26-2 main_#t~post9 := main_~i~0;main_~i~0 := main_#t~post9 - 1;havoc main_#t~post9; 1257#L26-3 assume !!(main_~i~0 >= 0);call main_#t~mem10 := read~int(main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);call write~int(main_#t~mem10, main_~#str2~0.base, main_~#str2~0.offset + main_~j~0, 1);havoc main_#t~mem10;main_#t~post11 := main_~j~0;main_~j~0 := 1 + main_#t~post11;havoc main_#t~post11; 1251#L26-2 main_#t~post9 := main_~i~0;main_~i~0 := main_#t~post9 - 1;havoc main_#t~post9; 1250#L26-3 assume !(main_~i~0 >= 0); 1242#L26-4 main_~j~0 := (if (main_~max~0 - 1) % 4294967296 % 4294967296 <= 2147483647 then (main_~max~0 - 1) % 4294967296 % 4294967296 else (main_~max~0 - 1) % 4294967296 % 4294967296 - 4294967296);main_~i~0 := 0; 1233#L32-3 [2021-10-28 23:31:55,806 INFO L793 eck$LassoCheckResult]: Loop: 1233#L32-3 assume !!(main_~i~0 % 4294967296 < main_~max~0 % 4294967296);call main_#t~mem13 := read~int(main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);call main_#t~mem14 := read~int(main_~#str2~0.base, main_~#str2~0.offset + main_~j~0, 1);__VERIFIER_assert_#in~cond := (if main_#t~mem13 == main_#t~mem14 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1237#L6 assume !(0 == __VERIFIER_assert_~cond); 1234#L6-2 havoc main_#t~mem13;havoc main_#t~mem14;main_#t~post15 := main_~j~0;main_~j~0 := main_#t~post15 - 1;havoc main_#t~post15; 1232#L32-2 main_#t~post12 := main_~i~0;main_~i~0 := 1 + main_#t~post12;havoc main_#t~post12; 1233#L32-3 [2021-10-28 23:31:55,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:31:55,806 INFO L85 PathProgramCache]: Analyzing trace with hash -430652763, now seen corresponding path program 4 times [2021-10-28 23:31:55,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:31:55,807 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231373418] [2021-10-28 23:31:55,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:31:55,807 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:31:55,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:31:56,123 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-10-28 23:31:56,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:31:56,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231373418] [2021-10-28 23:31:56,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231373418] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:31:56,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146321199] [2021-10-28 23:31:56,124 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-28 23:31:56,124 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:31:56,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:31:56,130 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:31:56,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2021-10-28 23:31:56,360 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-28 23:31:56,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:31:56,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-28 23:31:56,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:31:56,524 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-10-28 23:31:56,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146321199] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:31:56,524 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:31:56,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 15 [2021-10-28 23:31:56,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594803939] [2021-10-28 23:31:56,525 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 23:31:56,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:31:56,525 INFO L85 PathProgramCache]: Analyzing trace with hash 2100362, now seen corresponding path program 5 times [2021-10-28 23:31:56,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:31:56,526 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405723089] [2021-10-28 23:31:56,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:31:56,526 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:31:56,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:31:56,534 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:31:56,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:31:56,541 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:31:56,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:31:56,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-28 23:31:56,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2021-10-28 23:31:56,684 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. cyclomatic complexity: 5 Second operand has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 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) [2021-10-28 23:31:57,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:31:57,222 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2021-10-28 23:31:57,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 23:31:57,223 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 42 states and 44 transitions. [2021-10-28 23:31:57,223 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-10-28 23:31:57,224 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 42 states to 42 states and 44 transitions. [2021-10-28 23:31:57,224 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 22 [2021-10-28 23:31:57,224 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 22 [2021-10-28 23:31:57,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 44 transitions. [2021-10-28 23:31:57,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:31:57,225 INFO L681 BuchiCegarLoop]: Abstraction has 42 states and 44 transitions. [2021-10-28 23:31:57,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states and 44 transitions. [2021-10-28 23:31:57,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 30. [2021-10-28 23:31:57,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 29 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) [2021-10-28 23:31:57,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2021-10-28 23:31:57,229 INFO L704 BuchiCegarLoop]: Abstraction has 30 states and 32 transitions. [2021-10-28 23:31:57,229 INFO L587 BuchiCegarLoop]: Abstraction has 30 states and 32 transitions. [2021-10-28 23:31:57,229 INFO L425 BuchiCegarLoop]: ======== Iteration 13============ [2021-10-28 23:31:57,230 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 30 states and 32 transitions. [2021-10-28 23:31:57,230 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-10-28 23:31:57,230 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:31:57,231 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:31:57,231 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2021-10-28 23:31:57,232 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-28 23:31:57,232 INFO L791 eck$LassoCheckResult]: Stem: 1407#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 1408#L-1 havoc main_#res;havoc main_#t~nondet8, main_#t~post7, main_#t~mem10, main_#t~post11, main_#t~post9, main_#t~mem13, main_#t~mem14, main_#t~post15, main_#t~post12, main_~max~0, main_~#str1~0.base, main_~#str1~0.offset, main_~#str2~0.base, main_~#str2~0.offset, main_~i~0, main_~j~0;main_~max~0 := 5;call main_~#str1~0.base, main_~#str1~0.offset := #Ultimate.allocOnStack((if main_~max~0 % 4294967296 % 4294967296 <= 2147483647 then main_~max~0 % 4294967296 % 4294967296 else main_~max~0 % 4294967296 % 4294967296 - 4294967296));call main_~#str2~0.base, main_~#str2~0.offset := #Ultimate.allocOnStack((if main_~max~0 % 4294967296 % 4294967296 <= 2147483647 then main_~max~0 % 4294967296 % 4294967296 else main_~max~0 % 4294967296 % 4294967296 - 4294967296));havoc main_~i~0;havoc main_~j~0;main_~i~0 := 0; 1416#L18-3 assume !!(main_~i~0 % 4294967296 < main_~max~0 % 4294967296);call write~int(main_#t~nondet8, main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 1410#L18-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 1411#L18-3 assume !!(main_~i~0 % 4294967296 < main_~max~0 % 4294967296);call write~int(main_#t~nondet8, main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 1417#L18-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 1433#L18-3 assume !!(main_~i~0 % 4294967296 < main_~max~0 % 4294967296);call write~int(main_#t~nondet8, main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 1431#L18-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 1429#L18-3 assume !!(main_~i~0 % 4294967296 < main_~max~0 % 4294967296);call write~int(main_#t~nondet8, main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 1427#L18-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 1425#L18-3 assume !!(main_~i~0 % 4294967296 < main_~max~0 % 4294967296);call write~int(main_#t~nondet8, main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);havoc main_#t~nondet8; 1422#L18-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 1421#L18-3 assume !(main_~i~0 % 4294967296 < main_~max~0 % 4294967296); 1418#L18-4 call write~int(0, main_~#str1~0.base, main_~#str1~0.offset + (if (main_~max~0 - 1) % 4294967296 % 4294967296 <= 2147483647 then (main_~max~0 - 1) % 4294967296 % 4294967296 else (main_~max~0 - 1) % 4294967296 % 4294967296 - 4294967296), 1);main_~j~0 := 0;main_~i~0 := (if (main_~max~0 - 1) % 4294967296 % 4294967296 <= 2147483647 then (main_~max~0 - 1) % 4294967296 % 4294967296 else (main_~max~0 - 1) % 4294967296 % 4294967296 - 4294967296); 1419#L26-3 assume !!(main_~i~0 >= 0);call main_#t~mem10 := read~int(main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);call write~int(main_#t~mem10, main_~#str2~0.base, main_~#str2~0.offset + main_~j~0, 1);havoc main_#t~mem10;main_#t~post11 := main_~j~0;main_~j~0 := 1 + main_#t~post11;havoc main_#t~post11; 1413#L26-2 main_#t~post9 := main_~i~0;main_~i~0 := main_#t~post9 - 1;havoc main_#t~post9; 1414#L26-3 assume !!(main_~i~0 >= 0);call main_#t~mem10 := read~int(main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);call write~int(main_#t~mem10, main_~#str2~0.base, main_~#str2~0.offset + main_~j~0, 1);havoc main_#t~mem10;main_#t~post11 := main_~j~0;main_~j~0 := 1 + main_#t~post11;havoc main_#t~post11; 1420#L26-2 main_#t~post9 := main_~i~0;main_~i~0 := main_#t~post9 - 1;havoc main_#t~post9; 1434#L26-3 assume !!(main_~i~0 >= 0);call main_#t~mem10 := read~int(main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);call write~int(main_#t~mem10, main_~#str2~0.base, main_~#str2~0.offset + main_~j~0, 1);havoc main_#t~mem10;main_#t~post11 := main_~j~0;main_~j~0 := 1 + main_#t~post11;havoc main_#t~post11; 1432#L26-2 main_#t~post9 := main_~i~0;main_~i~0 := main_#t~post9 - 1;havoc main_#t~post9; 1430#L26-3 assume !!(main_~i~0 >= 0);call main_#t~mem10 := read~int(main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);call write~int(main_#t~mem10, main_~#str2~0.base, main_~#str2~0.offset + main_~j~0, 1);havoc main_#t~mem10;main_#t~post11 := main_~j~0;main_~j~0 := 1 + main_#t~post11;havoc main_#t~post11; 1428#L26-2 main_#t~post9 := main_~i~0;main_~i~0 := main_#t~post9 - 1;havoc main_#t~post9; 1426#L26-3 assume !!(main_~i~0 >= 0);call main_#t~mem10 := read~int(main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);call write~int(main_#t~mem10, main_~#str2~0.base, main_~#str2~0.offset + main_~j~0, 1);havoc main_#t~mem10;main_#t~post11 := main_~j~0;main_~j~0 := 1 + main_#t~post11;havoc main_#t~post11; 1424#L26-2 main_#t~post9 := main_~i~0;main_~i~0 := main_#t~post9 - 1;havoc main_#t~post9; 1423#L26-3 assume !(main_~i~0 >= 0); 1415#L26-4 main_~j~0 := (if (main_~max~0 - 1) % 4294967296 % 4294967296 <= 2147483647 then (main_~max~0 - 1) % 4294967296 % 4294967296 else (main_~max~0 - 1) % 4294967296 % 4294967296 - 4294967296);main_~i~0 := 0; 1406#L32-3 [2021-10-28 23:31:57,232 INFO L793 eck$LassoCheckResult]: Loop: 1406#L32-3 assume !!(main_~i~0 % 4294967296 < main_~max~0 % 4294967296);call main_#t~mem13 := read~int(main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);call main_#t~mem14 := read~int(main_~#str2~0.base, main_~#str2~0.offset + main_~j~0, 1);__VERIFIER_assert_#in~cond := (if main_#t~mem13 == main_#t~mem14 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1412#L6 assume !(0 == __VERIFIER_assert_~cond); 1409#L6-2 havoc main_#t~mem13;havoc main_#t~mem14;main_#t~post15 := main_~j~0;main_~j~0 := main_#t~post15 - 1;havoc main_#t~post15; 1405#L32-2 main_#t~post12 := main_~i~0;main_~i~0 := 1 + main_#t~post12;havoc main_#t~post12; 1406#L32-3 [2021-10-28 23:31:57,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:31:57,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1540388377, now seen corresponding path program 5 times [2021-10-28 23:31:57,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:31:57,233 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740191764] [2021-10-28 23:31:57,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:31:57,234 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:31:57,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:31:57,273 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:31:57,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:31:57,344 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:31:57,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:31:57,345 INFO L85 PathProgramCache]: Analyzing trace with hash 2100362, now seen corresponding path program 6 times [2021-10-28 23:31:57,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:31:57,345 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849468536] [2021-10-28 23:31:57,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:31:57,346 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:31:57,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:31:57,357 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:31:57,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:31:57,373 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:31:57,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:31:57,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1945357456, now seen corresponding path program 1 times [2021-10-28 23:31:57,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:31:57,375 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382009320] [2021-10-28 23:31:57,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:31:57,375 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:31:57,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:31:57,437 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:31:57,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:31:57,531 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:32:18,911 WARN L207 SmtUtils]: Spent 21.24 s on a formula simplification. DAG size of input: 312 DAG size of output: 237 [2021-10-28 23:32:35,117 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:32:35,118 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:32:35,118 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:32:35,118 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:32:35,118 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 23:32:35,118 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:32:35,118 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:32:35,118 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:32:35,118 INFO L133 ssoRankerPreferences]: Filename of dumped script: invert_string-3.c_Iteration13_Lasso [2021-10-28 23:32:35,118 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:32:35,118 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:32:35,118 WARN L313 ript$VariableManager]: TermVariabe aux_div_v_ULTIMATE.start_main_~i~0_123_62 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:32:35,119 WARN L313 ript$VariableManager]: TermVariabe aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0_123_62_64 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:32:35,119 WARN L313 ript$VariableManager]: TermVariabe aux_div_aux_mod_v_ULTIMATE.start_main_~i~0_123_62_64 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:32:35,125 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:32:35,142 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:32:35,145 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:32:35,149 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:32:35,151 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:32:35,154 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:32:35,157 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:32:35,160 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:32:37,635 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer has thrown an exception: java.lang.AssertionError: MapEliminator tries to combine Int and (Array Int Int) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.mapelimination.MapEliminator.indexEqualityInequalityImpliesValueEquality(MapEliminator.java:850) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.mapelimination.MapEliminator.replaceSelectStoreTerm(MapEliminator.java:592) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.mapelimination.MapEliminator.replaceStoreTerms(MapEliminator.java:542) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.mapelimination.MapEliminator.getRewrittenTransFormula(MapEliminator.java:330) at de.uni_freiburg.informatik.ultimate.lassoranker.preprocessors.MapEliminationLassoPreprocessor.process(MapEliminationLassoPreprocessor.java:109) at de.uni_freiburg.informatik.ultimate.lassoranker.variables.LassoBuilder.applyPreprocessor(LassoBuilder.java:154) at de.uni_freiburg.informatik.ultimate.lassoranker.variables.LassoBuilder.preprocess(LassoBuilder.java:262) at de.uni_freiburg.informatik.ultimate.lassoranker.LassoAnalysis.preprocess(LassoAnalysis.java:280) at de.uni_freiburg.informatik.ultimate.lassoranker.LassoAnalysis.(LassoAnalysis.java:229) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck.synthesize(LassoCheck.java:609) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck$LassoCheckResult.checkLassoTermination(LassoCheck.java:953) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck$LassoCheckResult.(LassoCheck.java:862) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck.(LassoCheck.java:252) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiCegarLoop.iterate(BuchiCegarLoop.java:457) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.doTerminationAnalysis(BuchiAutomizerObserver.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.finish(BuchiAutomizerObserver.java:398) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-28 23:32:37,639 INFO L168 Benchmark]: Toolchain (without parser) took 63940.97 ms. Allocated memory was 90.2 MB in the beginning and 172.0 MB in the end (delta: 81.8 MB). Free memory was 55.8 MB in the beginning and 87.3 MB in the end (delta: -31.5 MB). Peak memory consumption was 109.7 MB. Max. memory is 16.1 GB. [2021-10-28 23:32:37,639 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 90.2 MB. Free memory was 60.3 MB in the beginning and 60.2 MB in the end (delta: 21.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:32:37,640 INFO L168 Benchmark]: CACSL2BoogieTranslator took 346.08 ms. Allocated memory is still 90.2 MB. Free memory was 55.6 MB in the beginning and 66.3 MB in the end (delta: -10.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:32:37,640 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.18 ms. Allocated memory is still 90.2 MB. Free memory was 66.3 MB in the beginning and 64.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:32:37,641 INFO L168 Benchmark]: Boogie Preprocessor took 33.76 ms. Allocated memory is still 90.2 MB. Free memory was 64.4 MB in the beginning and 63.5 MB in the end (delta: 975.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:32:37,641 INFO L168 Benchmark]: RCFGBuilder took 578.23 ms. Allocated memory is still 90.2 MB. Free memory was 63.5 MB in the beginning and 52.6 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:32:37,642 INFO L168 Benchmark]: BuchiAutomizer took 62925.94 ms. Allocated memory was 90.2 MB in the beginning and 172.0 MB in the end (delta: 81.8 MB). Free memory was 52.6 MB in the beginning and 87.3 MB in the end (delta: -34.7 MB). Peak memory consumption was 108.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:32:37,649 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 90.2 MB. Free memory was 60.3 MB in the beginning and 60.2 MB in the end (delta: 21.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 346.08 ms. Allocated memory is still 90.2 MB. Free memory was 55.6 MB in the beginning and 66.3 MB in the end (delta: -10.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 48.18 ms. Allocated memory is still 90.2 MB. Free memory was 66.3 MB in the beginning and 64.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.76 ms. Allocated memory is still 90.2 MB. Free memory was 64.4 MB in the beginning and 63.5 MB in the end (delta: 975.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 578.23 ms. Allocated memory is still 90.2 MB. Free memory was 63.5 MB in the beginning and 52.6 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 62925.94 ms. Allocated memory was 90.2 MB in the beginning and 172.0 MB in the end (delta: 81.8 MB). Free memory was 52.6 MB in the beginning and 87.3 MB in the end (delta: -34.7 MB). Peak memory consumption was 108.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: - ExceptionOrErrorResult: AssertionError: MapEliminator tries to combine Int and (Array Int Int) de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: AssertionError: MapEliminator tries to combine Int and (Array Int Int): de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.mapelimination.MapEliminator.indexEqualityInequalityImpliesValueEquality(MapEliminator.java:850) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-28 23:32:37,721 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2021-10-28 23:32:37,922 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2021-10-28 23:32:38,122 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2021-10-28 23:32:38,322 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2021-10-28 23:32:38,522 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2021-10-28 23:32:38,723 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2021-10-28 23:32:38,923 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-10-28 23:32:39,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-10-28 23:32:39,302 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c3b98e6-d3b7-4ddd-8307-d0367f0ee644/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...