./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-15/array04_alloca.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ea6e19-351d-4432-b735-69be1cfddbef/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ea6e19-351d-4432-b735-69be1cfddbef/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ea6e19-351d-4432-b735-69be1cfddbef/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ea6e19-351d-4432-b735-69be1cfddbef/bin/uautomizer-J5u9QxTXDZ/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-15/array04_alloca.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ea6e19-351d-4432-b735-69be1cfddbef/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ea6e19-351d-4432-b735-69be1cfddbef/bin/uautomizer-J5u9QxTXDZ --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 64bit --witnessprinter.graph.data.programhash 1183c091737a27abb58fd8d0696c96a2bb1d5baea63debedec24831694536a86 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 10:38:45,037 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:38:45,043 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:38:45,087 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:38:45,089 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:38:45,094 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:38:45,097 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:38:45,104 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:38:45,106 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:38:45,108 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:38:45,109 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:38:45,113 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:38:45,114 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:38:45,122 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:38:45,123 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:38:45,126 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:38:45,127 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:38:45,128 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:38:45,129 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:38:45,131 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:38:45,133 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:38:45,135 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:38:45,136 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:38:45,137 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:38:45,142 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:38:45,143 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:38:45,143 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:38:45,144 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:38:45,145 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:38:45,146 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:38:45,146 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:38:45,158 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:38:45,159 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:38:45,160 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:38:45,162 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:38:45,162 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:38:45,163 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:38:45,164 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:38:45,164 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:38:45,165 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:38:45,166 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:38:45,170 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ea6e19-351d-4432-b735-69be1cfddbef/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-10-17 10:38:45,217 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:38:45,218 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:38:45,218 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:38:45,218 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:38:45,219 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:38:45,220 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:38:45,220 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:38:45,220 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-10-17 10:38:45,220 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-10-17 10:38:45,220 INFO L138 SettingsManager]: * Use old map elimination=false [2022-10-17 10:38:45,221 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-10-17 10:38:45,221 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-10-17 10:38:45,221 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-10-17 10:38:45,221 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:38:45,221 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-17 10:38:45,222 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:38:45,222 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:38:45,222 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-10-17 10:38:45,222 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-10-17 10:38:45,222 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-10-17 10:38:45,222 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:38:45,223 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-10-17 10:38:45,223 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:38:45,223 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-10-17 10:38:45,223 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:38:45,224 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:38:45,224 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:38:45,224 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:38:45,225 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-10-17 10:38:45,225 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_46ea6e19-351d-4432-b735-69be1cfddbef/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ea6e19-351d-4432-b735-69be1cfddbef/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1183c091737a27abb58fd8d0696c96a2bb1d5baea63debedec24831694536a86 [2022-10-17 10:38:45,461 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:38:45,491 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:38:45,496 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:38:45,498 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:38:45,500 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:38:45,501 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ea6e19-351d-4432-b735-69be1cfddbef/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/termination-15/array04_alloca.i [2022-10-17 10:38:45,582 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ea6e19-351d-4432-b735-69be1cfddbef/bin/uautomizer-J5u9QxTXDZ/data/c2ff026f6/951ca308078c4e07b98119b4668e2932/FLAGaa2d5c996 [2022-10-17 10:38:46,077 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:38:46,077 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ea6e19-351d-4432-b735-69be1cfddbef/sv-benchmarks/c/termination-15/array04_alloca.i [2022-10-17 10:38:46,088 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ea6e19-351d-4432-b735-69be1cfddbef/bin/uautomizer-J5u9QxTXDZ/data/c2ff026f6/951ca308078c4e07b98119b4668e2932/FLAGaa2d5c996 [2022-10-17 10:38:46,444 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ea6e19-351d-4432-b735-69be1cfddbef/bin/uautomizer-J5u9QxTXDZ/data/c2ff026f6/951ca308078c4e07b98119b4668e2932 [2022-10-17 10:38:46,446 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:38:46,447 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:38:46,449 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:38:46,449 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:38:46,456 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:38:46,457 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:38:46" (1/1) ... [2022-10-17 10:38:46,459 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79bc22b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:46, skipping insertion in model container [2022-10-17 10:38:46,459 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:38:46" (1/1) ... [2022-10-17 10:38:46,467 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:38:46,500 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:38:46,895 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:38:46,907 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:38:46,967 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:38:47,016 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:38:47,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:47 WrapperNode [2022-10-17 10:38:47,017 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:38:47,018 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:38:47,018 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:38:47,018 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:38:47,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:47" (1/1) ... [2022-10-17 10:38:47,050 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:47" (1/1) ... [2022-10-17 10:38:47,075 INFO L138 Inliner]: procedures = 151, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 42 [2022-10-17 10:38:47,075 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:38:47,077 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:38:47,077 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:38:47,077 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:38:47,086 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:47" (1/1) ... [2022-10-17 10:38:47,086 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:47" (1/1) ... [2022-10-17 10:38:47,099 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:47" (1/1) ... [2022-10-17 10:38:47,099 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:47" (1/1) ... [2022-10-17 10:38:47,111 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:47" (1/1) ... [2022-10-17 10:38:47,119 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:47" (1/1) ... [2022-10-17 10:38:47,121 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:47" (1/1) ... [2022-10-17 10:38:47,122 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:47" (1/1) ... [2022-10-17 10:38:47,124 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:38:47,130 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:38:47,130 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:38:47,130 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:38:47,131 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:47" (1/1) ... [2022-10-17 10:38:47,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:38:47,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ea6e19-351d-4432-b735-69be1cfddbef/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:38:47,174 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ea6e19-351d-4432-b735-69be1cfddbef/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:38:47,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ea6e19-351d-4432-b735-69be1cfddbef/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-10-17 10:38:47,221 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 10:38:47,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:38:47,221 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:38:47,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:38:47,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:38:47,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:38:47,283 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:38:47,284 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:38:47,393 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:38:47,399 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:38:47,399 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-10-17 10:38:47,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:38:47 BoogieIcfgContainer [2022-10-17 10:38:47,401 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:38:47,402 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-10-17 10:38:47,402 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-10-17 10:38:47,406 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-10-17 10:38:47,407 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-10-17 10:38:47,407 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 17.10 10:38:46" (1/3) ... [2022-10-17 10:38:47,408 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@38038f2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.10 10:38:47, skipping insertion in model container [2022-10-17 10:38:47,408 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-10-17 10:38:47,408 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:47" (2/3) ... [2022-10-17 10:38:47,409 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@38038f2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.10 10:38:47, skipping insertion in model container [2022-10-17 10:38:47,409 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-10-17 10:38:47,409 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:38:47" (3/3) ... [2022-10-17 10:38:47,410 INFO L332 chiAutomizerObserver]: Analyzing ICFG array04_alloca.i [2022-10-17 10:38:47,463 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-10-17 10:38:47,463 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-10-17 10:38:47,463 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-10-17 10:38:47,463 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-10-17 10:38:47,464 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-10-17 10:38:47,464 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-10-17 10:38:47,464 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-10-17 10:38:47,464 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-10-17 10:38:47,467 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 13 states, 12 states have (on average 1.5) internal successors, (18), 12 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) [2022-10-17 10:38:47,485 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 3 [2022-10-17 10:38:47,485 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-10-17 10:38:47,485 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-10-17 10:38:47,491 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2022-10-17 10:38:47,491 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-10-17 10:38:47,491 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-10-17 10:38:47,492 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 13 states, 12 states have (on average 1.5) internal successors, (18), 12 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) [2022-10-17 10:38:47,493 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 3 [2022-10-17 10:38:47,494 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-10-17 10:38:47,494 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-10-17 10:38:47,494 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2022-10-17 10:38:47,494 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-10-17 10:38:47,502 INFO L748 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet205#1, main_#t~malloc206#1.base, main_#t~malloc206#1.offset, main_#t~nondet208#1, main_#t~post207#1, main_#t~mem209#1, main_~i~0#1, main_~j~0#1, main_~length~0#1, main_~arr~0#1.base, main_~arr~0#1.offset;havoc main_~i~0#1;havoc main_~j~0#1;main_~length~0#1 := main_#t~nondet205#1;havoc main_#t~nondet205#1; 11#L367true assume !(main_~length~0#1 < 1); 8#L367-2true call main_#t~malloc206#1.base, main_#t~malloc206#1.offset := #Ultimate.allocOnStack(4 * main_~length~0#1);main_~arr~0#1.base, main_~arr~0#1.offset := main_#t~malloc206#1.base, main_#t~malloc206#1.offset; 5#L369true assume !(main_~arr~0#1.base == 0 && main_~arr~0#1.offset == 0);main_~i~0#1 := 0; 6#L370-3true [2022-10-17 10:38:47,502 INFO L750 eck$LassoCheckResult]: Loop: 6#L370-3true assume !!(main_~i~0#1 < main_~length~0#1);call write~int(main_#t~nondet208#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet208#1; 12#L370-2true main_#t~post207#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post207#1;havoc main_#t~post207#1; 6#L370-3true [2022-10-17 10:38:47,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:38:47,509 INFO L85 PathProgramCache]: Analyzing trace with hash 28695753, now seen corresponding path program 1 times [2022-10-17 10:38:47,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:38:47,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186820375] [2022-10-17 10:38:47,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:38:47,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:38:47,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:38:47,640 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:38:47,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:38:47,670 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:38:47,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:38:47,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1667, now seen corresponding path program 1 times [2022-10-17 10:38:47,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:38:47,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158621485] [2022-10-17 10:38:47,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:38:47,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:38:47,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:38:47,688 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:38:47,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:38:47,700 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:38:47,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:38:47,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1806815563, now seen corresponding path program 1 times [2022-10-17 10:38:47,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:38:47,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680713532] [2022-10-17 10:38:47,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:38:47,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:38:47,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:38:47,752 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:38:47,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:38:47,776 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:38:48,153 INFO L210 LassoAnalysis]: Preferences: [2022-10-17 10:38:48,153 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-10-17 10:38:48,154 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-10-17 10:38:48,154 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-10-17 10:38:48,154 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-10-17 10:38:48,154 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:38:48,154 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-10-17 10:38:48,155 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-10-17 10:38:48,155 INFO L133 ssoRankerPreferences]: Filename of dumped script: array04_alloca.i_Iteration1_Lasso [2022-10-17 10:38:48,155 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-10-17 10:38:48,156 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-10-17 10:38:48,186 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:38:48,198 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:38:48,204 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:38:48,208 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:38:48,447 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:38:48,451 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:38:48,453 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:38:48,456 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:38:48,674 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-10-17 10:38:48,679 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-10-17 10:38:48,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:38:48,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ea6e19-351d-4432-b735-69be1cfddbef/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:38:48,683 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ea6e19-351d-4432-b735-69be1cfddbef/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:38:48,691 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:38:48,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ea6e19-351d-4432-b735-69be1cfddbef/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-10-17 10:38:48,700 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:38:48,701 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:38:48,701 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:38:48,702 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:38:48,702 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:38:48,704 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:38:48,704 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:38:48,725 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:38:48,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ea6e19-351d-4432-b735-69be1cfddbef/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-10-17 10:38:48,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:38:48,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ea6e19-351d-4432-b735-69be1cfddbef/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:38:48,769 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ea6e19-351d-4432-b735-69be1cfddbef/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:38:48,774 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 [2022-10-17 10:38:48,783 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:38:48,783 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:38:48,784 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:38:48,784 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:38:48,787 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-10-17 10:38:48,788 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-10-17 10:38:48,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ea6e19-351d-4432-b735-69be1cfddbef/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-10-17 10:38:48,805 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:38:48,837 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ea6e19-351d-4432-b735-69be1cfddbef/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-10-17 10:38:48,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:38:48,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ea6e19-351d-4432-b735-69be1cfddbef/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:38:48,841 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ea6e19-351d-4432-b735-69be1cfddbef/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:38:48,847 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 [2022-10-17 10:38:48,856 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:38:48,856 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:38:48,856 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:38:48,856 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:38:48,856 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:38:48,857 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:38:48,857 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:38:48,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ea6e19-351d-4432-b735-69be1cfddbef/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-10-17 10:38:48,873 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:38:48,906 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ea6e19-351d-4432-b735-69be1cfddbef/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-10-17 10:38:48,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:38:48,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ea6e19-351d-4432-b735-69be1cfddbef/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:38:48,908 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ea6e19-351d-4432-b735-69be1cfddbef/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:38:48,917 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 [2022-10-17 10:38:48,926 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:38:48,927 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:38:48,927 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:38:48,927 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:38:48,937 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-10-17 10:38:48,937 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-10-17 10:38:48,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ea6e19-351d-4432-b735-69be1cfddbef/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-10-17 10:38:48,957 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-10-17 10:38:48,992 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2022-10-17 10:38:48,992 INFO L444 ModelExtractionUtils]: 7 out of 22 variables were initially zero. Simplification set additionally 12 variables to zero. [2022-10-17 10:38:48,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:38:48,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ea6e19-351d-4432-b735-69be1cfddbef/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:38:49,014 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ea6e19-351d-4432-b735-69be1cfddbef/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:38:49,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ea6e19-351d-4432-b735-69be1cfddbef/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-10-17 10:38:49,023 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-10-17 10:38:49,046 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2022-10-17 10:38:49,046 INFO L513 LassoAnalysis]: Proved termination. [2022-10-17 10:38:49,047 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1, ULTIMATE.start_main_~length~0#1) = -1*ULTIMATE.start_main_~i~0#1 + 1*ULTIMATE.start_main_~length~0#1 Supporting invariants [] [2022-10-17 10:38:49,085 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ea6e19-351d-4432-b735-69be1cfddbef/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-10-17 10:38:49,097 INFO L156 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2022-10-17 10:38:49,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:38:49,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:38:49,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-17 10:38:49,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:38:49,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:38:49,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-17 10:38:49,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:38:49,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:38:49,250 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-10-17 10:38:49,252 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 13 states, 12 states have (on average 1.5) internal successors, (18), 12 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) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2022-10-17 10:38:49,292 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 13 states, 12 states have (on average 1.5) internal successors, (18), 12 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). Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 30 states and 40 transitions. Complement of second has 7 states. [2022-10-17 10:38:49,295 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 [2022-10-17 10:38:49,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2022-10-17 10:38:49,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 27 transitions. [2022-10-17 10:38:49,301 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 5 letters. Loop has 2 letters. [2022-10-17 10:38:49,302 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:38:49,302 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 7 letters. Loop has 2 letters. [2022-10-17 10:38:49,303 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:38:49,303 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 5 letters. Loop has 4 letters. [2022-10-17 10:38:49,303 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:38:49,304 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 30 states and 40 transitions. [2022-10-17 10:38:49,307 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-10-17 10:38:49,310 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 30 states to 10 states and 13 transitions. [2022-10-17 10:38:49,311 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2022-10-17 10:38:49,312 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2022-10-17 10:38:49,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 13 transitions. [2022-10-17 10:38:49,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:38:49,312 INFO L218 hiAutomatonCegarLoop]: Abstraction has 10 states and 13 transitions. [2022-10-17 10:38:49,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 13 transitions. [2022-10-17 10:38:49,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2022-10-17 10:38:49,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 1.3) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:38:49,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2022-10-17 10:38:49,338 INFO L240 hiAutomatonCegarLoop]: Abstraction has 10 states and 13 transitions. [2022-10-17 10:38:49,338 INFO L428 stractBuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2022-10-17 10:38:49,339 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-10-17 10:38:49,339 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 13 transitions. [2022-10-17 10:38:49,339 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-10-17 10:38:49,340 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-10-17 10:38:49,340 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-10-17 10:38:49,340 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:38:49,340 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-10-17 10:38:49,340 INFO L748 eck$LassoCheckResult]: Stem: 105#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 106#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet205#1, main_#t~malloc206#1.base, main_#t~malloc206#1.offset, main_#t~nondet208#1, main_#t~post207#1, main_#t~mem209#1, main_~i~0#1, main_~j~0#1, main_~length~0#1, main_~arr~0#1.base, main_~arr~0#1.offset;havoc main_~i~0#1;havoc main_~j~0#1;main_~length~0#1 := main_#t~nondet205#1;havoc main_#t~nondet205#1; 109#L367 assume !(main_~length~0#1 < 1); 103#L367-2 call main_#t~malloc206#1.base, main_#t~malloc206#1.offset := #Ultimate.allocOnStack(4 * main_~length~0#1);main_~arr~0#1.base, main_~arr~0#1.offset := main_#t~malloc206#1.base, main_#t~malloc206#1.offset; 104#L369 assume !(main_~arr~0#1.base == 0 && main_~arr~0#1.offset == 0);main_~i~0#1 := 0; 107#L370-3 assume !(main_~i~0#1 < main_~length~0#1); 108#L370-4 main_~j~0#1 := 0; 102#L374-2 [2022-10-17 10:38:49,341 INFO L750 eck$LassoCheckResult]: Loop: 102#L374-2 assume !!(0 <= main_~j~0#1 && main_~j~0#1 < main_~length~0#1);call main_#t~mem209#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~j~0#1, 4);main_~j~0#1 := main_~j~0#1 + main_#t~mem209#1;havoc main_#t~mem209#1; 102#L374-2 [2022-10-17 10:38:49,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:38:49,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1806815505, now seen corresponding path program 1 times [2022-10-17 10:38:49,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:38:49,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829666655] [2022-10-17 10:38:49,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:38:49,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:38:49,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:38:49,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:38:49,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:38:49,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829666655] [2022-10-17 10:38:49,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829666655] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:38:49,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:38:49,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:38:49,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738554188] [2022-10-17 10:38:49,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:38:49,467 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-10-17 10:38:49,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:38:49,468 INFO L85 PathProgramCache]: Analyzing trace with hash 68, now seen corresponding path program 1 times [2022-10-17 10:38:49,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:38:49,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871490763] [2022-10-17 10:38:49,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:38:49,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:38:49,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:38:49,501 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:38:49,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:38:49,506 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:38:49,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:38:49,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:38:49,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:38:49,563 INFO L87 Difference]: Start difference. First operand 10 states and 13 transitions. cyclomatic complexity: 5 Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2022-10-17 10:38:49,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:38:49,590 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2022-10-17 10:38:49,590 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 13 transitions. [2022-10-17 10:38:49,592 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-10-17 10:38:49,592 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 13 transitions. [2022-10-17 10:38:49,593 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2022-10-17 10:38:49,593 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2022-10-17 10:38:49,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 13 transitions. [2022-10-17 10:38:49,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:38:49,593 INFO L218 hiAutomatonCegarLoop]: Abstraction has 11 states and 13 transitions. [2022-10-17 10:38:49,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 13 transitions. [2022-10-17 10:38:49,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2022-10-17 10:38:49,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 1.2) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:38:49,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2022-10-17 10:38:49,601 INFO L240 hiAutomatonCegarLoop]: Abstraction has 10 states and 12 transitions. [2022-10-17 10:38:49,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:38:49,602 INFO L428 stractBuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2022-10-17 10:38:49,602 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-10-17 10:38:49,602 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 12 transitions. [2022-10-17 10:38:49,605 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-10-17 10:38:49,605 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-10-17 10:38:49,605 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-10-17 10:38:49,611 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:38:49,612 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-10-17 10:38:49,612 INFO L748 eck$LassoCheckResult]: Stem: 131#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 132#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet205#1, main_#t~malloc206#1.base, main_#t~malloc206#1.offset, main_#t~nondet208#1, main_#t~post207#1, main_#t~mem209#1, main_~i~0#1, main_~j~0#1, main_~length~0#1, main_~arr~0#1.base, main_~arr~0#1.offset;havoc main_~i~0#1;havoc main_~j~0#1;main_~length~0#1 := main_#t~nondet205#1;havoc main_#t~nondet205#1; 137#L367 assume !(main_~length~0#1 < 1); 133#L367-2 call main_#t~malloc206#1.base, main_#t~malloc206#1.offset := #Ultimate.allocOnStack(4 * main_~length~0#1);main_~arr~0#1.base, main_~arr~0#1.offset := main_#t~malloc206#1.base, main_#t~malloc206#1.offset; 134#L369 assume !(main_~arr~0#1.base == 0 && main_~arr~0#1.offset == 0);main_~i~0#1 := 0; 135#L370-3 assume !!(main_~i~0#1 < main_~length~0#1);call write~int(main_#t~nondet208#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet208#1; 138#L370-2 main_#t~post207#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post207#1;havoc main_#t~post207#1; 139#L370-3 assume !(main_~i~0#1 < main_~length~0#1); 136#L370-4 main_~j~0#1 := 0; 130#L374-2 [2022-10-17 10:38:49,612 INFO L750 eck$LassoCheckResult]: Loop: 130#L374-2 assume !!(0 <= main_~j~0#1 && main_~j~0#1 < main_~length~0#1);call main_#t~mem209#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~j~0#1, 4);main_~j~0#1 := main_~j~0#1 + main_#t~mem209#1;havoc main_#t~mem209#1; 130#L374-2 [2022-10-17 10:38:49,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:38:49,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1182969107, now seen corresponding path program 1 times [2022-10-17 10:38:49,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:38:49,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638752580] [2022-10-17 10:38:49,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:38:49,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:38:49,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:38:49,640 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:38:49,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:38:49,664 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:38:49,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:38:49,665 INFO L85 PathProgramCache]: Analyzing trace with hash 68, now seen corresponding path program 2 times [2022-10-17 10:38:49,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:38:49,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601047268] [2022-10-17 10:38:49,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:38:49,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:38:49,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:38:49,678 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:38:49,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:38:49,692 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:38:49,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:38:49,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1982663310, now seen corresponding path program 1 times [2022-10-17 10:38:49,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:38:49,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772817471] [2022-10-17 10:38:49,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:38:49,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:38:49,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:38:49,716 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:38:49,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:38:49,746 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:38:49,923 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ea6e19-351d-4432-b735-69be1cfddbef/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-10-17 10:38:50,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:38:50,124 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:38:50,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:38:50,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 17.10 10:38:50 BoogieIcfgContainer [2022-10-17 10:38:50,207 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-10-17 10:38:50,207 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-10-17 10:38:50,208 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-10-17 10:38:50,208 INFO L275 PluginConnector]: Witness Printer initialized [2022-10-17 10:38:50,208 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:38:47" (3/4) ... [2022-10-17 10:38:50,211 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2022-10-17 10:38:50,281 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ea6e19-351d-4432-b735-69be1cfddbef/bin/uautomizer-J5u9QxTXDZ/witness.graphml [2022-10-17 10:38:50,281 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-10-17 10:38:50,282 INFO L158 Benchmark]: Toolchain (without parser) took 3834.46ms. Allocated memory was 83.9MB in the beginning and 109.1MB in the end (delta: 25.2MB). Free memory was 55.2MB in the beginning and 63.2MB in the end (delta: -7.9MB). Peak memory consumption was 18.5MB. Max. memory is 16.1GB. [2022-10-17 10:38:50,283 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 83.9MB. Free memory was 53.6MB in the beginning and 53.6MB in the end (delta: 43.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:38:50,283 INFO L158 Benchmark]: CACSL2BoogieTranslator took 568.30ms. Allocated memory is still 83.9MB. Free memory was 55.0MB in the beginning and 49.6MB in the end (delta: 5.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-10-17 10:38:50,284 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.23ms. Allocated memory is still 83.9MB. Free memory was 49.6MB in the beginning and 47.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 10:38:50,284 INFO L158 Benchmark]: Boogie Preprocessor took 52.45ms. Allocated memory is still 83.9MB. Free memory was 47.8MB in the beginning and 46.5MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:38:50,285 INFO L158 Benchmark]: RCFGBuilder took 271.07ms. Allocated memory is still 83.9MB. Free memory was 46.5MB in the beginning and 36.9MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-10-17 10:38:50,286 INFO L158 Benchmark]: BuchiAutomizer took 2805.09ms. Allocated memory was 83.9MB in the beginning and 109.1MB in the end (delta: 25.2MB). Free memory was 36.7MB in the beginning and 65.3MB in the end (delta: -28.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:38:50,286 INFO L158 Benchmark]: Witness Printer took 73.58ms. Allocated memory is still 109.1MB. Free memory was 65.3MB in the beginning and 63.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 10:38:50,290 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 83.9MB. Free memory was 53.6MB in the beginning and 53.6MB in the end (delta: 43.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 568.30ms. Allocated memory is still 83.9MB. Free memory was 55.0MB in the beginning and 49.6MB in the end (delta: 5.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.23ms. Allocated memory is still 83.9MB. Free memory was 49.6MB in the beginning and 47.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.45ms. Allocated memory is still 83.9MB. Free memory was 47.8MB in the beginning and 46.5MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 271.07ms. Allocated memory is still 83.9MB. Free memory was 46.5MB in the beginning and 36.9MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 2805.09ms. Allocated memory was 83.9MB in the beginning and 109.1MB in the end (delta: 25.2MB). Free memory was 36.7MB in the beginning and 65.3MB in the end (delta: -28.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 73.58ms. Allocated memory is still 109.1MB. Free memory was 65.3MB in the beginning and 63.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 2 terminating modules (1 trivial, 1 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function -1 * i + length and consists of 5 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. The remainder module has 10 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.7s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 2.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 25 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 24 mSDsluCounter, 29 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 25 IncrementalHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 19 mSDtfsCounter, 25 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU1 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital99 mio100 ax100 hnf100 lsp93 ukn84 mio100 lsp62 div100 bol100 ite100 ukn100 eq165 hnf91 smp100 dnf100 smp100 tf100 neg98 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 38ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 374]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L365] int i, j; [L366] int length = __VERIFIER_nondet_int(); [L367] COND FALSE !(length < 1) VAL [length=1] [L368] int *arr = __builtin_alloca(length*sizeof(int)); VAL [__builtin_alloca(length*sizeof(int))={2:0}, arr={2:0}, length=1] [L369] COND FALSE !(!arr) [L370] i=0 VAL [__builtin_alloca(length*sizeof(int))={2:0}, arr={2:0}, i=0, length=1] [L370] COND TRUE i