./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loop-acceleration/array_3-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6972349-a601-468a-86f6-d2eacb8bce9e/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6972349-a601-468a-86f6-d2eacb8bce9e/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6972349-a601-468a-86f6-d2eacb8bce9e/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6972349-a601-468a-86f6-d2eacb8bce9e/bin/uautomizer-w2VwFs6gM0/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loop-acceleration/array_3-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6972349-a601-468a-86f6-d2eacb8bce9e/bin/uautomizer-w2VwFs6gM0/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6972349-a601-468a-86f6-d2eacb8bce9e/bin/uautomizer-w2VwFs6gM0 --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 9c5d8dd6c87f471ee77fd3b765c8ecabfaf01dd976e127275ea7c589f724f472 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 15:12:46,130 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 15:12:46,133 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 15:12:46,193 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 15:12:46,194 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 15:12:46,199 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 15:12:46,201 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 15:12:46,206 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 15:12:46,210 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 15:12:46,217 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 15:12:46,219 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 15:12:46,221 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 15:12:46,222 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 15:12:46,226 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 15:12:46,228 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 15:12:46,234 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 15:12:46,237 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 15:12:46,238 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 15:12:46,241 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 15:12:46,251 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 15:12:46,253 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 15:12:46,255 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 15:12:46,259 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 15:12:46,260 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 15:12:46,263 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 15:12:46,264 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 15:12:46,264 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 15:12:46,266 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 15:12:46,266 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 15:12:46,268 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 15:12:46,268 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 15:12:46,269 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 15:12:46,270 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 15:12:46,271 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 15:12:46,272 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 15:12:46,273 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 15:12:46,273 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 15:12:46,274 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 15:12:46,274 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 15:12:46,275 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 15:12:46,276 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 15:12:46,277 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6972349-a601-468a-86f6-d2eacb8bce9e/bin/uautomizer-w2VwFs6gM0/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-11-22 15:12:46,308 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 15:12:46,308 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 15:12:46,309 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 15:12:46,309 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 15:12:46,311 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 15:12:46,311 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 15:12:46,311 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 15:12:46,312 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-11-22 15:12:46,312 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-11-22 15:12:46,312 INFO L138 SettingsManager]: * Use old map elimination=false [2021-11-22 15:12:46,313 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-11-22 15:12:46,313 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-11-22 15:12:46,314 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-11-22 15:12:46,314 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 15:12:46,314 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 15:12:46,314 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-22 15:12:46,315 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 15:12:46,315 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 15:12:46,315 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 15:12:46,315 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-11-22 15:12:46,315 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-11-22 15:12:46,316 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-11-22 15:12:46,316 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 15:12:46,316 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 15:12:46,316 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-11-22 15:12:46,316 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 15:12:46,318 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-11-22 15:12:46,319 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 15:12:46,319 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 15:12:46,319 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 15:12:46,319 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 15:12:46,320 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 15:12:46,321 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-11-22 15:12:46,321 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_a6972349-a601-468a-86f6-d2eacb8bce9e/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6972349-a601-468a-86f6-d2eacb8bce9e/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c5d8dd6c87f471ee77fd3b765c8ecabfaf01dd976e127275ea7c589f724f472 [2021-11-22 15:12:46,694 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 15:12:46,730 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 15:12:46,734 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 15:12:46,736 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 15:12:46,737 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 15:12:46,739 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6972349-a601-468a-86f6-d2eacb8bce9e/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/loop-acceleration/array_3-1.i [2021-11-22 15:12:46,815 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6972349-a601-468a-86f6-d2eacb8bce9e/bin/uautomizer-w2VwFs6gM0/data/6a3fb39a2/1f0c7645ef34425b9110ebe85cda9430/FLAGaebd9da2f [2021-11-22 15:12:47,367 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 15:12:47,368 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6972349-a601-468a-86f6-d2eacb8bce9e/sv-benchmarks/c/loop-acceleration/array_3-1.i [2021-11-22 15:12:47,374 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6972349-a601-468a-86f6-d2eacb8bce9e/bin/uautomizer-w2VwFs6gM0/data/6a3fb39a2/1f0c7645ef34425b9110ebe85cda9430/FLAGaebd9da2f [2021-11-22 15:12:47,731 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6972349-a601-468a-86f6-d2eacb8bce9e/bin/uautomizer-w2VwFs6gM0/data/6a3fb39a2/1f0c7645ef34425b9110ebe85cda9430 [2021-11-22 15:12:47,734 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 15:12:47,736 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 15:12:47,753 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 15:12:47,754 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 15:12:47,758 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 15:12:47,759 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:12:47" (1/1) ... [2021-11-22 15:12:47,760 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64e6d561 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:12:47, skipping insertion in model container [2021-11-22 15:12:47,761 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:12:47" (1/1) ... [2021-11-22 15:12:47,769 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 15:12:47,786 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 15:12:47,981 WARN L230 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_a6972349-a601-468a-86f6-d2eacb8bce9e/sv-benchmarks/c/loop-acceleration/array_3-1.i[849,862] [2021-11-22 15:12:47,990 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:12:47,998 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 15:12:48,012 WARN L230 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_a6972349-a601-468a-86f6-d2eacb8bce9e/sv-benchmarks/c/loop-acceleration/array_3-1.i[849,862] [2021-11-22 15:12:48,017 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:12:48,031 INFO L208 MainTranslator]: Completed translation [2021-11-22 15:12:48,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:12:48 WrapperNode [2021-11-22 15:12:48,032 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 15:12:48,033 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 15:12:48,033 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 15:12:48,033 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 15:12:48,043 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:12:48" (1/1) ... [2021-11-22 15:12:48,053 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:12:48" (1/1) ... [2021-11-22 15:12:48,077 INFO L137 Inliner]: procedures = 16, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 43 [2021-11-22 15:12:48,077 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 15:12:48,078 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 15:12:48,079 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 15:12:48,079 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 15:12:48,089 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:12:48" (1/1) ... [2021-11-22 15:12:48,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:12:48" (1/1) ... [2021-11-22 15:12:48,102 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:12:48" (1/1) ... [2021-11-22 15:12:48,102 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:12:48" (1/1) ... [2021-11-22 15:12:48,108 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:12:48" (1/1) ... [2021-11-22 15:12:48,113 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:12:48" (1/1) ... [2021-11-22 15:12:48,114 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:12:48" (1/1) ... [2021-11-22 15:12:48,117 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 15:12:48,118 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 15:12:48,118 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 15:12:48,119 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 15:12:48,120 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:12:48" (1/1) ... [2021-11-22 15:12:48,132 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:12:48,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6972349-a601-468a-86f6-d2eacb8bce9e/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:12:48,166 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6972349-a601-468a-86f6-d2eacb8bce9e/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 15:12:48,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6972349-a601-468a-86f6-d2eacb8bce9e/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-11-22 15:12:48,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 15:12:48,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 15:12:48,208 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-22 15:12:48,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-22 15:12:48,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 15:12:48,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 15:12:48,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-22 15:12:48,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-22 15:12:48,279 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 15:12:48,280 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 15:12:48,380 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 15:12:48,387 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 15:12:48,388 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-22 15:12:48,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:12:48 BoogieIcfgContainer [2021-11-22 15:12:48,390 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 15:12:48,392 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-11-22 15:12:48,392 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-11-22 15:12:48,396 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-11-22 15:12:48,397 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-22 15:12:48,398 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.11 03:12:47" (1/3) ... [2021-11-22 15:12:48,399 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@15a5681b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.11 03:12:48, skipping insertion in model container [2021-11-22 15:12:48,400 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-22 15:12:48,400 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:12:48" (2/3) ... [2021-11-22 15:12:48,401 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@15a5681b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.11 03:12:48, skipping insertion in model container [2021-11-22 15:12:48,401 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-22 15:12:48,401 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:12:48" (3/3) ... [2021-11-22 15:12:48,403 INFO L388 chiAutomizerObserver]: Analyzing ICFG array_3-1.i [2021-11-22 15:12:48,463 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-11-22 15:12:48,464 INFO L360 BuchiCegarLoop]: Hoare is false [2021-11-22 15:12:48,464 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-11-22 15:12:48,464 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-11-22 15:12:48,464 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-11-22 15:12:48,464 INFO L364 BuchiCegarLoop]: Difference is false [2021-11-22 15:12:48,464 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-11-22 15:12:48,464 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-11-22 15:12:48,477 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 16 states, 15 states have (on average 1.4) internal successors, (21), 15 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) [2021-11-22 15:12:48,497 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2021-11-22 15:12:48,497 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-22 15:12:48,498 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-22 15:12:48,504 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-22 15:12:48,505 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-11-22 15:12:48,505 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-11-22 15:12:48,505 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 16 states, 15 states have (on average 1.4) internal successors, (21), 15 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) [2021-11-22 15:12:48,508 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2021-11-22 15:12:48,508 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-22 15:12:48,508 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-22 15:12:48,509 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-22 15:12:48,509 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-11-22 15:12:48,517 INFO L791 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(12, 2); 9#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~post1#1, main_#t~post3#1, main_#t~mem4#1, main_~#A~0#1.base, main_~#A~0#1.offset, main_~i~0#1;call main_~#A~0#1.base, main_~#A~0#1.offset := #Ultimate.allocOnStack(4096);havoc main_~i~0#1;main_~i~0#1 := 0; 14#L24-3true [2021-11-22 15:12:48,518 INFO L793 eck$LassoCheckResult]: Loop: 14#L24-3true assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 6#L24-2true main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 14#L24-3true [2021-11-22 15:12:48,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:12:48,524 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-11-22 15:12:48,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:12:48,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461568535] [2021-11-22 15:12:48,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:12:48,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:12:48,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:12:48,640 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-22 15:12:48,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:12:48,676 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-22 15:12:48,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:12:48,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1283, now seen corresponding path program 1 times [2021-11-22 15:12:48,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:12:48,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442456895] [2021-11-22 15:12:48,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:12:48,682 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:12:48,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:12:48,695 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-22 15:12:48,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:12:48,707 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-22 15:12:48,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:12:48,710 INFO L85 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2021-11-22 15:12:48,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:12:48,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141181595] [2021-11-22 15:12:48,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:12:48,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:12:48,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:12:48,738 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-22 15:12:48,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:12:48,763 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-22 15:12:49,261 INFO L210 LassoAnalysis]: Preferences: [2021-11-22 15:12:49,262 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-22 15:12:49,262 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-22 15:12:49,262 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-22 15:12:49,263 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-22 15:12:49,263 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:12:49,263 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-22 15:12:49,263 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-22 15:12:49,264 INFO L133 ssoRankerPreferences]: Filename of dumped script: array_3-1.i_Iteration1_Lasso [2021-11-22 15:12:49,264 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-22 15:12:49,264 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-22 15:12:49,292 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:12:49,300 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:12:49,303 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:12:49,497 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:12:49,500 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:12:49,504 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:12:49,507 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:12:49,825 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-22 15:12:49,830 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-22 15:12:49,832 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:12:49,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6972349-a601-468a-86f6-d2eacb8bce9e/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:12:49,834 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6972349-a601-468a-86f6-d2eacb8bce9e/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 15:12:49,843 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 [2021-11-22 15:12:49,855 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-22 15:12:49,855 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-22 15:12:49,855 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-22 15:12:49,855 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-22 15:12:49,864 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-22 15:12:49,864 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-22 15:12:49,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6972349-a601-468a-86f6-d2eacb8bce9e/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-11-22 15:12:49,871 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-22 15:12:49,918 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6972349-a601-468a-86f6-d2eacb8bce9e/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-11-22 15:12:49,919 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:12:49,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6972349-a601-468a-86f6-d2eacb8bce9e/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:12:49,921 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6972349-a601-468a-86f6-d2eacb8bce9e/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 15:12:49,925 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 [2021-11-22 15:12:49,937 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-22 15:12:49,937 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-22 15:12:49,938 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-22 15:12:49,938 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-22 15:12:49,938 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-22 15:12:49,939 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-22 15:12:49,940 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-22 15:12:49,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6972349-a601-468a-86f6-d2eacb8bce9e/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-11-22 15:12:49,942 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-22 15:12:49,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6972349-a601-468a-86f6-d2eacb8bce9e/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-11-22 15:12:49,988 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:12:49,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6972349-a601-468a-86f6-d2eacb8bce9e/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:12:49,993 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6972349-a601-468a-86f6-d2eacb8bce9e/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 15:12:50,000 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 [2021-11-22 15:12:50,010 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-22 15:12:50,010 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-22 15:12:50,011 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-22 15:12:50,011 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-22 15:12:50,015 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-22 15:12:50,015 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-22 15:12:50,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6972349-a601-468a-86f6-d2eacb8bce9e/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-11-22 15:12:50,033 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-22 15:12:50,077 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6972349-a601-468a-86f6-d2eacb8bce9e/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-11-22 15:12:50,077 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:12:50,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6972349-a601-468a-86f6-d2eacb8bce9e/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:12:50,079 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6972349-a601-468a-86f6-d2eacb8bce9e/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 15:12:50,086 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 [2021-11-22 15:12:50,096 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-22 15:12:50,097 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-22 15:12:50,097 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-22 15:12:50,097 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-22 15:12:50,097 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-22 15:12:50,098 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-22 15:12:50,098 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-22 15:12:50,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6972349-a601-468a-86f6-d2eacb8bce9e/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-11-22 15:12:50,104 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-22 15:12:50,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6972349-a601-468a-86f6-d2eacb8bce9e/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-11-22 15:12:50,128 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:12:50,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6972349-a601-468a-86f6-d2eacb8bce9e/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:12:50,129 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6972349-a601-468a-86f6-d2eacb8bce9e/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 15:12:50,138 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 [2021-11-22 15:12:50,149 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-22 15:12:50,149 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-22 15:12:50,149 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-22 15:12:50,149 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-22 15:12:50,160 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-22 15:12:50,161 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-22 15:12:50,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6972349-a601-468a-86f6-d2eacb8bce9e/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-11-22 15:12:50,181 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-22 15:12:50,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6972349-a601-468a-86f6-d2eacb8bce9e/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-11-22 15:12:50,229 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:12:50,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6972349-a601-468a-86f6-d2eacb8bce9e/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:12:50,231 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6972349-a601-468a-86f6-d2eacb8bce9e/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 15:12:50,242 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 [2021-11-22 15:12:50,252 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-22 15:12:50,253 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-22 15:12:50,253 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-22 15:12:50,253 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-22 15:12:50,261 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-22 15:12:50,261 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-22 15:12:50,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6972349-a601-468a-86f6-d2eacb8bce9e/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-11-22 15:12:50,282 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-22 15:12:50,306 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6972349-a601-468a-86f6-d2eacb8bce9e/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-11-22 15:12:50,306 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:12:50,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6972349-a601-468a-86f6-d2eacb8bce9e/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:12:50,307 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6972349-a601-468a-86f6-d2eacb8bce9e/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 15:12:50,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6972349-a601-468a-86f6-d2eacb8bce9e/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-11-22 15:12:50,314 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 [2021-11-22 15:12:50,323 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-22 15:12:50,324 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-22 15:12:50,324 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-22 15:12:50,324 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-22 15:12:50,333 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-22 15:12:50,333 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-22 15:12:50,351 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-22 15:12:50,379 INFO L443 ModelExtractionUtils]: Simplification made 8 calls to the SMT solver. [2021-11-22 15:12:50,379 INFO L444 ModelExtractionUtils]: 0 out of 13 variables were initially zero. Simplification set additionally 10 variables to zero. [2021-11-22 15:12:50,382 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:12:50,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6972349-a601-468a-86f6-d2eacb8bce9e/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:12:50,384 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6972349-a601-468a-86f6-d2eacb8bce9e/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 15:12:50,422 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-22 15:12:50,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6972349-a601-468a-86f6-d2eacb8bce9e/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-11-22 15:12:50,451 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2021-11-22 15:12:50,452 INFO L513 LassoAnalysis]: Proved termination. [2021-11-22 15:12:50,452 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1, v_rep(select #length ULTIMATE.start_main_~#A~0#1.base)_1) = -8*ULTIMATE.start_main_~i~0#1 + 2047*v_rep(select #length ULTIMATE.start_main_~#A~0#1.base)_1 Supporting invariants [] [2021-11-22 15:12:50,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6972349-a601-468a-86f6-d2eacb8bce9e/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-11-22 15:12:50,514 INFO L297 tatePredicateManager]: 5 out of 5 supporting invariants were superfluous and have been removed [2021-11-22 15:12:50,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:12:50,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:12:50,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-22 15:12:50,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:12:50,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:12:50,624 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-22 15:12:50,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:12:50,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:12:50,776 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 [2021-11-22 15:12:50,777 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 16 states, 15 states have (on average 1.4) internal successors, (21), 15 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) 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) [2021-11-22 15:12:50,829 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 16 states, 15 states have (on average 1.4) internal successors, (21), 15 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). 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 31 states and 43 transitions. Complement of second has 8 states. [2021-11-22 15:12:50,831 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 [2021-11-22 15:12:50,836 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) [2021-11-22 15:12:50,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2021-11-22 15:12:50,839 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 2 letters. Loop has 2 letters. [2021-11-22 15:12:50,839 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-22 15:12:50,839 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 4 letters. Loop has 2 letters. [2021-11-22 15:12:50,839 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-22 15:12:50,839 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 2 letters. Loop has 4 letters. [2021-11-22 15:12:50,840 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-22 15:12:50,841 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 43 transitions. [2021-11-22 15:12:50,844 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-11-22 15:12:50,847 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 10 states and 12 transitions. [2021-11-22 15:12:50,849 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-11-22 15:12:50,849 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2021-11-22 15:12:50,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 12 transitions. [2021-11-22 15:12:50,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-22 15:12:50,850 INFO L681 BuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2021-11-22 15:12:50,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 12 transitions. [2021-11-22 15:12:50,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-11-22 15:12:50,877 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) [2021-11-22 15:12:50,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2021-11-22 15:12:50,879 INFO L704 BuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2021-11-22 15:12:50,879 INFO L587 BuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2021-11-22 15:12:50,879 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-11-22 15:12:50,879 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 12 transitions. [2021-11-22 15:12:50,880 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-11-22 15:12:50,880 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-22 15:12:50,880 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-22 15:12:50,880 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-11-22 15:12:50,880 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-11-22 15:12:50,881 INFO L791 eck$LassoCheckResult]: Stem: 107#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(12, 2); 108#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~post1#1, main_#t~post3#1, main_#t~mem4#1, main_~#A~0#1.base, main_~#A~0#1.offset, main_~i~0#1;call main_~#A~0#1.base, main_~#A~0#1.offset := #Ultimate.allocOnStack(4096);havoc main_~i~0#1;main_~i~0#1 := 0; 115#L24-3 assume !(main_~i~0#1 < 1024); 116#L24-4 main_~i~0#1 := 0; 114#L28-4 [2021-11-22 15:12:50,881 INFO L793 eck$LassoCheckResult]: Loop: 114#L28-4 call main_#t~mem4#1 := read~int(main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4); 111#L28-1 assume !!(0 != main_#t~mem4#1);havoc main_#t~mem4#1; 112#L29 assume !(main_~i~0#1 >= 1023); 113#L28-3 main_#t~post3#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 114#L28-4 [2021-11-22 15:12:50,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:12:50,882 INFO L85 PathProgramCache]: Analyzing trace with hash 925707, now seen corresponding path program 1 times [2021-11-22 15:12:50,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:12:50,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256671580] [2021-11-22 15:12:50,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:12:50,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:12:50,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:12:50,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:12:50,927 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:12:50,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256671580] [2021-11-22 15:12:50,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256671580] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:12:50,928 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:12:50,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:12:50,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244166232] [2021-11-22 15:12:50,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:12:50,931 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-22 15:12:50,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:12:50,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1544328, now seen corresponding path program 1 times [2021-11-22 15:12:50,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:12:50,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555261167] [2021-11-22 15:12:50,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:12:50,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:12:50,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:12:50,946 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-22 15:12:50,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:12:50,965 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-22 15:12:51,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:12:51,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:12:51,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:12:51,044 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. cyclomatic complexity: 4 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) [2021-11-22 15:12:51,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:12:51,071 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2021-11-22 15:12:51,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:12:51,073 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 16 transitions. [2021-11-22 15:12:51,074 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-11-22 15:12:51,074 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 15 states and 16 transitions. [2021-11-22 15:12:51,075 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2021-11-22 15:12:51,075 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2021-11-22 15:12:51,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 16 transitions. [2021-11-22 15:12:51,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-22 15:12:51,076 INFO L681 BuchiCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-11-22 15:12:51,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 16 transitions. [2021-11-22 15:12:51,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 10. [2021-11-22 15:12:51,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 1.1) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:12:51,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2021-11-22 15:12:51,078 INFO L704 BuchiCegarLoop]: Abstraction has 10 states and 11 transitions. [2021-11-22 15:12:51,078 INFO L587 BuchiCegarLoop]: Abstraction has 10 states and 11 transitions. [2021-11-22 15:12:51,078 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-11-22 15:12:51,078 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 11 transitions. [2021-11-22 15:12:51,079 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-11-22 15:12:51,079 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-22 15:12:51,079 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-22 15:12:51,079 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-11-22 15:12:51,080 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-11-22 15:12:51,080 INFO L791 eck$LassoCheckResult]: Stem: 138#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(12, 2); 139#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~post1#1, main_#t~post3#1, main_#t~mem4#1, main_~#A~0#1.base, main_~#A~0#1.offset, main_~i~0#1;call main_~#A~0#1.base, main_~#A~0#1.offset := #Ultimate.allocOnStack(4096);havoc main_~i~0#1;main_~i~0#1 := 0; 146#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 140#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 141#L24-3 assume !(main_~i~0#1 < 1024); 147#L24-4 main_~i~0#1 := 0; 145#L28-4 [2021-11-22 15:12:51,080 INFO L793 eck$LassoCheckResult]: Loop: 145#L28-4 call main_#t~mem4#1 := read~int(main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4); 142#L28-1 assume !!(0 != main_#t~mem4#1);havoc main_#t~mem4#1; 143#L29 assume !(main_~i~0#1 >= 1023); 144#L28-3 main_#t~post3#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 145#L28-4 [2021-11-22 15:12:51,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:12:51,081 INFO L85 PathProgramCache]: Analyzing trace with hash 889660429, now seen corresponding path program 1 times [2021-11-22 15:12:51,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:12:51,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284805349] [2021-11-22 15:12:51,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:12:51,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:12:51,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:12:51,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:12:51,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:12:51,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284805349] [2021-11-22 15:12:51,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284805349] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:12:51,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522719612] [2021-11-22 15:12:51,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:12:51,117 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:12:51,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6972349-a601-468a-86f6-d2eacb8bce9e/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:12:51,119 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6972349-a601-468a-86f6-d2eacb8bce9e/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:12:51,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6972349-a601-468a-86f6-d2eacb8bce9e/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-22 15:12:51,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:12:51,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 15:12:51,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:12:51,186 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:12:51,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:12:51,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:12:51,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522719612] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:12:51,215 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 15:12:51,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-22 15:12:51,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377557454] [2021-11-22 15:12:51,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 15:12:51,216 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-22 15:12:51,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:12:51,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1544328, now seen corresponding path program 2 times [2021-11-22 15:12:51,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:12:51,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125499712] [2021-11-22 15:12:51,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:12:51,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:12:51,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:12:51,224 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-22 15:12:51,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:12:51,232 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-22 15:12:51,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:12:51,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 15:12:51,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:12:51,293 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. cyclomatic complexity: 3 Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:12:51,346 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6972349-a601-468a-86f6-d2eacb8bce9e/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-11-22 15:12:51,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:12:51,384 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2021-11-22 15:12:51,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:12:51,385 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 28 transitions. [2021-11-22 15:12:51,387 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-11-22 15:12:51,388 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 27 states and 28 transitions. [2021-11-22 15:12:51,389 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19 [2021-11-22 15:12:51,389 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 19 [2021-11-22 15:12:51,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 28 transitions. [2021-11-22 15:12:51,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-22 15:12:51,390 INFO L681 BuchiCegarLoop]: Abstraction has 27 states and 28 transitions. [2021-11-22 15:12:51,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 28 transitions. [2021-11-22 15:12:51,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 16. [2021-11-22 15:12:51,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 16 states have (on average 1.0625) internal successors, (17), 15 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) [2021-11-22 15:12:51,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2021-11-22 15:12:51,393 INFO L704 BuchiCegarLoop]: Abstraction has 16 states and 17 transitions. [2021-11-22 15:12:51,393 INFO L587 BuchiCegarLoop]: Abstraction has 16 states and 17 transitions. [2021-11-22 15:12:51,393 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-11-22 15:12:51,393 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 17 transitions. [2021-11-22 15:12:51,394 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-11-22 15:12:51,394 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-22 15:12:51,394 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-22 15:12:51,395 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [4, 4, 1, 1, 1, 1] [2021-11-22 15:12:51,395 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-11-22 15:12:51,396 INFO L791 eck$LassoCheckResult]: Stem: 215#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(12, 2); 216#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~post1#1, main_#t~post3#1, main_#t~mem4#1, main_~#A~0#1.base, main_~#A~0#1.offset, main_~i~0#1;call main_~#A~0#1.base, main_~#A~0#1.offset := #Ultimate.allocOnStack(4096);havoc main_~i~0#1;main_~i~0#1 := 0; 223#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 217#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 218#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 224#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 230#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 229#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 228#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 227#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 226#L24-3 assume !(main_~i~0#1 < 1024); 225#L24-4 main_~i~0#1 := 0; 222#L28-4 [2021-11-22 15:12:51,396 INFO L793 eck$LassoCheckResult]: Loop: 222#L28-4 call main_#t~mem4#1 := read~int(main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4); 219#L28-1 assume !!(0 != main_#t~mem4#1);havoc main_#t~mem4#1; 220#L29 assume !(main_~i~0#1 >= 1023); 221#L28-3 main_#t~post3#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 222#L28-4 [2021-11-22 15:12:51,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:12:51,397 INFO L85 PathProgramCache]: Analyzing trace with hash 833936659, now seen corresponding path program 2 times [2021-11-22 15:12:51,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:12:51,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625702684] [2021-11-22 15:12:51,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:12:51,398 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:12:51,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:12:51,464 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:12:51,464 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:12:51,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625702684] [2021-11-22 15:12:51,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625702684] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:12:51,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766374324] [2021-11-22 15:12:51,465 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-22 15:12:51,465 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:12:51,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6972349-a601-468a-86f6-d2eacb8bce9e/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:12:51,467 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6972349-a601-468a-86f6-d2eacb8bce9e/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:12:51,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6972349-a601-468a-86f6-d2eacb8bce9e/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-22 15:12:51,515 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-22 15:12:51,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 15:12:51,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-22 15:12:51,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:12:51,574 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:12:51,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:12:51,673 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:12:51,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766374324] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:12:51,674 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 15:12:51,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2021-11-22 15:12:51,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102041618] [2021-11-22 15:12:51,675 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 15:12:51,676 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-22 15:12:51,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:12:51,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1544328, now seen corresponding path program 3 times [2021-11-22 15:12:51,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:12:51,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964154379] [2021-11-22 15:12:51,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:12:51,679 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:12:51,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:12:51,695 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-22 15:12:51,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:12:51,711 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-22 15:12:51,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:12:51,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-22 15:12:51,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-11-22 15:12:51,766 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. cyclomatic complexity: 3 Second operand has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:12:51,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:12:51,891 INFO L93 Difference]: Finished difference Result 63 states and 64 transitions. [2021-11-22 15:12:51,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-22 15:12:51,893 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 63 states and 64 transitions. [2021-11-22 15:12:51,895 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-11-22 15:12:51,897 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 63 states to 63 states and 64 transitions. [2021-11-22 15:12:51,897 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 43 [2021-11-22 15:12:51,897 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 43 [2021-11-22 15:12:51,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 63 states and 64 transitions. [2021-11-22 15:12:51,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-22 15:12:51,898 INFO L681 BuchiCegarLoop]: Abstraction has 63 states and 64 transitions. [2021-11-22 15:12:51,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states and 64 transitions. [2021-11-22 15:12:51,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 28. [2021-11-22 15:12:51,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 28 states have (on average 1.0357142857142858) internal successors, (29), 27 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:12:51,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2021-11-22 15:12:51,903 INFO L704 BuchiCegarLoop]: Abstraction has 28 states and 29 transitions. [2021-11-22 15:12:51,903 INFO L587 BuchiCegarLoop]: Abstraction has 28 states and 29 transitions. [2021-11-22 15:12:51,903 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-11-22 15:12:51,903 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 28 states and 29 transitions. [2021-11-22 15:12:51,904 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-11-22 15:12:51,904 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-22 15:12:51,904 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-22 15:12:51,905 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [10, 10, 1, 1, 1, 1] [2021-11-22 15:12:51,906 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-11-22 15:12:51,906 INFO L791 eck$LassoCheckResult]: Stem: 376#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(12, 2); 377#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~post1#1, main_#t~post3#1, main_#t~mem4#1, main_~#A~0#1.base, main_~#A~0#1.offset, main_~i~0#1;call main_~#A~0#1.base, main_~#A~0#1.offset := #Ultimate.allocOnStack(4096);havoc main_~i~0#1;main_~i~0#1 := 0; 384#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 385#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 386#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 378#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 379#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 403#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 402#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 401#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 400#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 399#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 398#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 397#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 396#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 395#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 394#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 393#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 392#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 391#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 390#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 389#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 388#L24-3 assume !(main_~i~0#1 < 1024); 387#L24-4 main_~i~0#1 := 0; 383#L28-4 [2021-11-22 15:12:51,906 INFO L793 eck$LassoCheckResult]: Loop: 383#L28-4 call main_#t~mem4#1 := read~int(main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4); 380#L28-1 assume !!(0 != main_#t~mem4#1);havoc main_#t~mem4#1; 381#L29 assume !(main_~i~0#1 >= 1023); 382#L28-3 main_#t~post3#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 383#L28-4 [2021-11-22 15:12:51,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:12:51,907 INFO L85 PathProgramCache]: Analyzing trace with hash 2127272351, now seen corresponding path program 3 times [2021-11-22 15:12:51,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:12:51,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863523080] [2021-11-22 15:12:51,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:12:51,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:12:51,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:12:52,108 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:12:52,109 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:12:52,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863523080] [2021-11-22 15:12:52,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863523080] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:12:52,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165784987] [2021-11-22 15:12:52,109 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-22 15:12:52,109 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:12:52,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6972349-a601-468a-86f6-d2eacb8bce9e/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:12:52,154 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6972349-a601-468a-86f6-d2eacb8bce9e/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:12:52,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6972349-a601-468a-86f6-d2eacb8bce9e/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-22 15:12:52,283 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-11-22 15:12:52,283 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 15:12:52,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-22 15:12:52,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:12:52,365 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:12:52,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:12:52,659 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:12:52,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165784987] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:12:52,660 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 15:12:52,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2021-11-22 15:12:52,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089803508] [2021-11-22 15:12:52,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 15:12:52,661 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-22 15:12:52,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:12:52,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1544328, now seen corresponding path program 4 times [2021-11-22 15:12:52,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:12:52,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034246216] [2021-11-22 15:12:52,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:12:52,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:12:52,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:12:52,672 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-22 15:12:52,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:12:52,687 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-22 15:12:52,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:12:52,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-22 15:12:52,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2021-11-22 15:12:52,742 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. cyclomatic complexity: 3 Second operand has 25 states, 25 states have (on average 1.96) internal successors, (49), 25 states have internal predecessors, (49), 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) [2021-11-22 15:12:53,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:12:53,044 INFO L93 Difference]: Finished difference Result 135 states and 136 transitions. [2021-11-22 15:12:53,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-22 15:12:53,045 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 135 states and 136 transitions. [2021-11-22 15:12:53,050 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-11-22 15:12:53,052 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 135 states to 135 states and 136 transitions. [2021-11-22 15:12:53,052 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 91 [2021-11-22 15:12:53,053 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 91 [2021-11-22 15:12:53,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 135 states and 136 transitions. [2021-11-22 15:12:53,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-22 15:12:53,054 INFO L681 BuchiCegarLoop]: Abstraction has 135 states and 136 transitions. [2021-11-22 15:12:53,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states and 136 transitions. [2021-11-22 15:12:53,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 52. [2021-11-22 15:12:53,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 52 states have (on average 1.0192307692307692) internal successors, (53), 51 states have internal predecessors, (53), 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) [2021-11-22 15:12:53,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 53 transitions. [2021-11-22 15:12:53,061 INFO L704 BuchiCegarLoop]: Abstraction has 52 states and 53 transitions. [2021-11-22 15:12:53,061 INFO L587 BuchiCegarLoop]: Abstraction has 52 states and 53 transitions. [2021-11-22 15:12:53,061 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-11-22 15:12:53,061 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 52 states and 53 transitions. [2021-11-22 15:12:53,063 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-11-22 15:12:53,063 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-22 15:12:53,063 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-22 15:12:53,065 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [22, 22, 1, 1, 1, 1] [2021-11-22 15:12:53,065 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-11-22 15:12:53,065 INFO L791 eck$LassoCheckResult]: Stem: 705#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(12, 2); 706#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~post1#1, main_#t~post3#1, main_#t~mem4#1, main_~#A~0#1.base, main_~#A~0#1.offset, main_~i~0#1;call main_~#A~0#1.base, main_~#A~0#1.offset := #Ultimate.allocOnStack(4096);havoc main_~i~0#1;main_~i~0#1 := 0; 713#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 714#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 715#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 707#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 708#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 756#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 755#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 754#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 753#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 752#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 751#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 750#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 749#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 748#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 747#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 746#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 745#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 744#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 743#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 742#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 741#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 740#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 739#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 738#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 737#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 736#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 735#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 734#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 733#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 732#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 731#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 730#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 729#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 728#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 727#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 726#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 725#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 724#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 723#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 722#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 721#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 720#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 719#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 718#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 717#L24-3 assume !(main_~i~0#1 < 1024); 716#L24-4 main_~i~0#1 := 0; 712#L28-4 [2021-11-22 15:12:53,066 INFO L793 eck$LassoCheckResult]: Loop: 712#L28-4 call main_#t~mem4#1 := read~int(main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4); 709#L28-1 assume !!(0 != main_#t~mem4#1);havoc main_#t~mem4#1; 710#L29 assume !(main_~i~0#1 >= 1023); 711#L28-3 main_#t~post3#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 712#L28-4 [2021-11-22 15:12:53,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:12:53,066 INFO L85 PathProgramCache]: Analyzing trace with hash 828161207, now seen corresponding path program 4 times [2021-11-22 15:12:53,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:12:53,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251849700] [2021-11-22 15:12:53,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:12:53,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:12:53,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:12:53,457 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:12:53,458 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:12:53,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251849700] [2021-11-22 15:12:53,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251849700] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:12:53,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785008679] [2021-11-22 15:12:53,459 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-22 15:12:53,459 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:12:53,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6972349-a601-468a-86f6-d2eacb8bce9e/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:12:53,486 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6972349-a601-468a-86f6-d2eacb8bce9e/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:12:53,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6972349-a601-468a-86f6-d2eacb8bce9e/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-22 15:12:53,561 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-22 15:12:53,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 15:12:53,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-22 15:12:53,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:12:53,710 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:12:53,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:12:54,724 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:12:54,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785008679] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:12:54,725 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 15:12:54,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2021-11-22 15:12:54,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026636835] [2021-11-22 15:12:54,725 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 15:12:54,726 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-22 15:12:54,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:12:54,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1544328, now seen corresponding path program 5 times [2021-11-22 15:12:54,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:12:54,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450865852] [2021-11-22 15:12:54,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:12:54,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:12:54,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:12:54,732 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-22 15:12:54,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:12:54,737 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-22 15:12:54,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:12:54,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-11-22 15:12:54,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2021-11-22 15:12:54,782 INFO L87 Difference]: Start difference. First operand 52 states and 53 transitions. cyclomatic complexity: 3 Second operand has 49 states, 49 states have (on average 1.9795918367346939) internal successors, (97), 49 states have internal predecessors, (97), 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) [2021-11-22 15:12:55,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:12:55,495 INFO L93 Difference]: Finished difference Result 279 states and 280 transitions. [2021-11-22 15:12:55,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-22 15:12:55,498 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 279 states and 280 transitions. [2021-11-22 15:12:55,510 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-11-22 15:12:55,520 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 279 states to 279 states and 280 transitions. [2021-11-22 15:12:55,521 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 187 [2021-11-22 15:12:55,523 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 187 [2021-11-22 15:12:55,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 279 states and 280 transitions. [2021-11-22 15:12:55,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-22 15:12:55,531 INFO L681 BuchiCegarLoop]: Abstraction has 279 states and 280 transitions. [2021-11-22 15:12:55,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states and 280 transitions. [2021-11-22 15:12:55,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 100. [2021-11-22 15:12:55,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 100 states have (on average 1.01) internal successors, (101), 99 states have internal predecessors, (101), 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) [2021-11-22 15:12:55,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 101 transitions. [2021-11-22 15:12:55,555 INFO L704 BuchiCegarLoop]: Abstraction has 100 states and 101 transitions. [2021-11-22 15:12:55,555 INFO L587 BuchiCegarLoop]: Abstraction has 100 states and 101 transitions. [2021-11-22 15:12:55,555 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-11-22 15:12:55,555 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 100 states and 101 transitions. [2021-11-22 15:12:55,556 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-11-22 15:12:55,557 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-22 15:12:55,557 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-22 15:12:55,564 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [46, 46, 1, 1, 1, 1] [2021-11-22 15:12:55,565 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-11-22 15:12:55,566 INFO L791 eck$LassoCheckResult]: Stem: 1370#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(12, 2); 1371#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~post1#1, main_#t~post3#1, main_#t~mem4#1, main_~#A~0#1.base, main_~#A~0#1.offset, main_~i~0#1;call main_~#A~0#1.base, main_~#A~0#1.offset := #Ultimate.allocOnStack(4096);havoc main_~i~0#1;main_~i~0#1 := 0; 1378#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 1379#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 1380#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 1372#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 1373#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 1469#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 1468#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 1467#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 1466#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 1465#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 1464#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 1463#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 1462#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 1461#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 1460#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 1459#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 1458#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 1457#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 1456#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 1455#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 1454#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 1453#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 1452#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 1451#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 1450#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 1449#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 1448#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 1447#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 1446#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 1445#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 1444#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 1443#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 1442#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 1441#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 1440#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 1439#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 1438#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 1437#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 1436#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 1435#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 1434#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 1433#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 1432#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 1431#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 1430#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 1429#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 1428#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 1427#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 1426#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 1425#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 1424#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 1423#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 1422#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 1421#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 1420#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 1419#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 1418#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 1417#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 1416#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 1415#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 1414#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 1413#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 1412#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 1411#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 1410#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 1409#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 1408#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 1407#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 1406#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 1405#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 1404#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 1403#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 1402#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 1401#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 1400#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 1399#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 1398#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 1397#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 1396#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 1395#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 1394#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 1393#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 1392#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 1391#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 1390#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 1389#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 1388#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 1387#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 1386#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 1385#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 1384#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 1383#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 1382#L24-3 assume !(main_~i~0#1 < 1024); 1381#L24-4 main_~i~0#1 := 0; 1377#L28-4 [2021-11-22 15:12:55,571 INFO L793 eck$LassoCheckResult]: Loop: 1377#L28-4 call main_#t~mem4#1 := read~int(main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4); 1374#L28-1 assume !!(0 != main_#t~mem4#1);havoc main_#t~mem4#1; 1375#L29 assume !(main_~i~0#1 >= 1023); 1376#L28-3 main_#t~post3#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 1377#L28-4 [2021-11-22 15:12:55,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:12:55,572 INFO L85 PathProgramCache]: Analyzing trace with hash 830581479, now seen corresponding path program 5 times [2021-11-22 15:12:55,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:12:55,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257946123] [2021-11-22 15:12:55,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:12:55,573 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:12:55,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:12:56,914 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:12:56,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:12:56,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257946123] [2021-11-22 15:12:56,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257946123] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:12:56,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687382589] [2021-11-22 15:12:56,916 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-22 15:12:56,916 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:12:56,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6972349-a601-468a-86f6-d2eacb8bce9e/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:12:56,918 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6972349-a601-468a-86f6-d2eacb8bce9e/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:12:56,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6972349-a601-468a-86f6-d2eacb8bce9e/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-22 15:13:18,546 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2021-11-22 15:13:18,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 15:13:18,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 48 conjunts are in the unsatisfiable core [2021-11-22 15:13:18,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:13:18,913 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:13:18,913 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:13:22,108 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:13:22,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687382589] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:13:22,109 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 15:13:22,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 97 [2021-11-22 15:13:22,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750083891] [2021-11-22 15:13:22,109 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 15:13:22,111 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-22 15:13:22,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:13:22,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1544328, now seen corresponding path program 6 times [2021-11-22 15:13:22,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:13:22,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063236005] [2021-11-22 15:13:22,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:13:22,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:13:22,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:13:22,122 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-22 15:13:22,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:13:22,129 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-22 15:13:22,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:13:22,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2021-11-22 15:13:22,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2021-11-22 15:13:22,186 INFO L87 Difference]: Start difference. First operand 100 states and 101 transitions. cyclomatic complexity: 3 Second operand has 97 states, 97 states have (on average 1.9896907216494846) internal successors, (193), 97 states have internal predecessors, (193), 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) [2021-11-22 15:13:24,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:13:24,713 INFO L93 Difference]: Finished difference Result 567 states and 568 transitions. [2021-11-22 15:13:24,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-11-22 15:13:24,720 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 567 states and 568 transitions. [2021-11-22 15:13:24,736 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-11-22 15:13:24,744 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 567 states to 567 states and 568 transitions. [2021-11-22 15:13:24,744 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 379 [2021-11-22 15:13:24,745 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 379 [2021-11-22 15:13:24,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 567 states and 568 transitions. [2021-11-22 15:13:24,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-22 15:13:24,748 INFO L681 BuchiCegarLoop]: Abstraction has 567 states and 568 transitions. [2021-11-22 15:13:24,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states and 568 transitions. [2021-11-22 15:13:24,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 196. [2021-11-22 15:13:24,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 196 states have (on average 1.0051020408163265) internal successors, (197), 195 states have internal predecessors, (197), 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) [2021-11-22 15:13:24,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 197 transitions. [2021-11-22 15:13:24,766 INFO L704 BuchiCegarLoop]: Abstraction has 196 states and 197 transitions. [2021-11-22 15:13:24,766 INFO L587 BuchiCegarLoop]: Abstraction has 196 states and 197 transitions. [2021-11-22 15:13:24,766 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-11-22 15:13:24,766 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 196 states and 197 transitions. [2021-11-22 15:13:24,768 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-11-22 15:13:24,769 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-22 15:13:24,769 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-22 15:13:24,772 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [94, 94, 1, 1, 1, 1] [2021-11-22 15:13:24,773 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-11-22 15:13:24,773 INFO L791 eck$LassoCheckResult]: Stem: 2707#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(12, 2); 2708#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~post1#1, main_#t~post3#1, main_#t~mem4#1, main_~#A~0#1.base, main_~#A~0#1.offset, main_~i~0#1;call main_~#A~0#1.base, main_~#A~0#1.offset := #Ultimate.allocOnStack(4096);havoc main_~i~0#1;main_~i~0#1 := 0; 2715#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2716#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2717#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2709#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2710#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2902#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2901#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2900#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2899#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2898#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2897#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2896#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2895#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2894#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2893#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2892#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2891#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2890#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2889#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2888#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2887#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2886#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2885#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2884#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2883#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2882#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2881#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2880#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2879#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2878#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2877#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2876#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2875#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2874#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2873#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2872#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2871#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2870#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2869#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2868#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2867#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2866#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2865#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2864#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2863#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2862#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2861#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2860#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2859#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2858#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2857#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2856#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2855#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2854#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2853#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2852#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2851#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2850#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2849#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2848#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2847#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2846#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2845#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2844#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2843#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2842#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2841#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2840#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2839#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2838#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2837#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2836#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2835#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2834#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2833#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2832#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2831#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2830#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2829#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2828#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2827#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2826#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2825#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2824#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2823#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2822#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2821#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2820#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2819#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2818#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2817#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2816#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2815#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2814#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2813#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2812#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2811#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2810#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2809#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2808#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2807#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2806#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2805#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2804#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2803#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2802#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2801#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2800#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2799#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2798#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2797#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2796#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2795#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2794#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2793#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2792#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2791#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2790#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2789#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2788#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2787#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2786#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2785#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2784#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2783#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2782#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2781#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2780#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2779#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2778#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2777#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2776#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2775#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2774#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2773#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2772#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2771#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2770#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2769#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2768#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2767#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2766#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2765#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2764#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2763#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2762#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2761#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2760#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2759#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2758#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2757#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2756#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2755#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2754#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2753#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2752#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2751#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2750#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2749#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2748#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2747#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2746#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2745#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2744#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2743#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2742#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2741#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2740#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2739#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2738#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2737#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2736#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2735#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2734#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2733#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2732#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2731#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2730#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2729#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2728#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2727#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2726#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2725#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2724#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2723#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2722#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2721#L24-3 assume !!(main_~i~0#1 < 1024);call write~int(main_#t~nondet2#1, main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet2#1; 2720#L24-2 main_#t~post1#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 2719#L24-3 assume !(main_~i~0#1 < 1024); 2718#L24-4 main_~i~0#1 := 0; 2714#L28-4 [2021-11-22 15:13:24,774 INFO L793 eck$LassoCheckResult]: Loop: 2714#L28-4 call main_#t~mem4#1 := read~int(main_~#A~0#1.base, main_~#A~0#1.offset + 4 * main_~i~0#1, 4); 2711#L28-1 assume !!(0 != main_#t~mem4#1);havoc main_#t~mem4#1; 2712#L29 assume !(main_~i~0#1 >= 1023); 2713#L28-3 main_#t~post3#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 2714#L28-4 [2021-11-22 15:13:24,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:13:24,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1165371207, now seen corresponding path program 6 times [2021-11-22 15:13:24,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:13:24,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638112358] [2021-11-22 15:13:24,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:13:24,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:13:24,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:13:28,596 INFO L134 CoverageAnalysis]: Checked inductivity of 8836 backedges. 0 proven. 8836 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:13:28,597 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:13:28,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638112358] [2021-11-22 15:13:28,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638112358] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:13:28,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408827261] [2021-11-22 15:13:28,597 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-22 15:13:28,597 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:13:28,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6972349-a601-468a-86f6-d2eacb8bce9e/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:13:28,599 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6972349-a601-468a-86f6-d2eacb8bce9e/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:13:28,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6972349-a601-468a-86f6-d2eacb8bce9e/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process