./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memory-alloca/c.03-alloca-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d57c99ea-1647-49f1-8d71-a9f5cfd4556c/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d57c99ea-1647-49f1-8d71-a9f5cfd4556c/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d57c99ea-1647-49f1-8d71-a9f5cfd4556c/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d57c99ea-1647-49f1-8d71-a9f5cfd4556c/bin/uautomizer-DQz5hQGWxF/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memory-alloca/c.03-alloca-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d57c99ea-1647-49f1-8d71-a9f5cfd4556c/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d57c99ea-1647-49f1-8d71-a9f5cfd4556c/bin/uautomizer-DQz5hQGWxF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 279a496440714e08b745bf93c9b96ddf5eea3a1a1333716a32e013acf1d533d2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 06:18:36,178 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 06:18:36,181 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 06:18:36,236 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 06:18:36,237 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 06:18:36,243 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 06:18:36,246 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 06:18:36,251 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 06:18:36,253 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 06:18:36,261 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 06:18:36,262 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 06:18:36,264 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 06:18:36,265 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 06:18:36,268 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 06:18:36,270 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 06:18:36,283 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 06:18:36,285 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 06:18:36,286 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 06:18:36,292 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 06:18:36,299 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 06:18:36,301 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 06:18:36,303 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 06:18:36,306 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 06:18:36,307 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 06:18:36,313 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 06:18:36,313 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 06:18:36,313 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 06:18:36,315 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 06:18:36,316 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 06:18:36,318 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 06:18:36,318 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 06:18:36,319 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 06:18:36,321 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 06:18:36,323 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 06:18:36,324 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 06:18:36,325 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 06:18:36,325 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 06:18:36,326 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 06:18:36,326 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 06:18:36,327 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 06:18:36,328 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 06:18:36,328 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d57c99ea-1647-49f1-8d71-a9f5cfd4556c/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-20 06:18:36,381 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 06:18:36,381 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 06:18:36,382 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 06:18:36,382 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 06:18:36,383 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 06:18:36,384 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 06:18:36,385 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 06:18:36,385 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 06:18:36,385 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 06:18:36,385 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 06:18:36,386 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 06:18:36,387 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 06:18:36,387 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 06:18:36,387 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 06:18:36,387 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 06:18:36,387 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-20 06:18:36,388 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-20 06:18:36,388 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-20 06:18:36,388 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 06:18:36,388 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 06:18:36,388 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 06:18:36,389 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 06:18:36,389 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 06:18:36,389 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 06:18:36,389 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 06:18:36,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:18:36,390 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 06:18:36,390 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 06:18:36,390 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 06:18:36,392 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 06:18:36,392 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 06:18:36,393 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_d57c99ea-1647-49f1-8d71-a9f5cfd4556c/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d57c99ea-1647-49f1-8d71-a9f5cfd4556c/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 279a496440714e08b745bf93c9b96ddf5eea3a1a1333716a32e013acf1d533d2 [2021-11-20 06:18:36,677 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 06:18:36,701 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 06:18:36,704 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 06:18:36,705 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 06:18:36,706 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 06:18:36,708 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d57c99ea-1647-49f1-8d71-a9f5cfd4556c/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/memory-alloca/c.03-alloca-2.i [2021-11-20 06:18:36,771 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d57c99ea-1647-49f1-8d71-a9f5cfd4556c/bin/uautomizer-DQz5hQGWxF/data/6f715fa42/cb42392cefb34669b87e2a5b9cabd54e/FLAG4d123e87b [2021-11-20 06:18:37,461 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 06:18:37,462 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d57c99ea-1647-49f1-8d71-a9f5cfd4556c/sv-benchmarks/c/memory-alloca/c.03-alloca-2.i [2021-11-20 06:18:37,497 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d57c99ea-1647-49f1-8d71-a9f5cfd4556c/bin/uautomizer-DQz5hQGWxF/data/6f715fa42/cb42392cefb34669b87e2a5b9cabd54e/FLAG4d123e87b [2021-11-20 06:18:37,756 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d57c99ea-1647-49f1-8d71-a9f5cfd4556c/bin/uautomizer-DQz5hQGWxF/data/6f715fa42/cb42392cefb34669b87e2a5b9cabd54e [2021-11-20 06:18:37,762 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 06:18:37,764 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 06:18:37,766 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 06:18:37,766 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 06:18:37,770 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 06:18:37,771 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:18:37" (1/1) ... [2021-11-20 06:18:37,773 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a2264f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:18:37, skipping insertion in model container [2021-11-20 06:18:37,774 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:18:37" (1/1) ... [2021-11-20 06:18:37,782 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 06:18:37,827 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:18:38,111 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:18:38,120 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 06:18:38,165 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:18:38,196 INFO L208 MainTranslator]: Completed translation [2021-11-20 06:18:38,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:18:38 WrapperNode [2021-11-20 06:18:38,197 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 06:18:38,198 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 06:18:38,198 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 06:18:38,199 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 06:18:38,207 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:18:38" (1/1) ... [2021-11-20 06:18:38,221 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:18:38" (1/1) ... [2021-11-20 06:18:38,246 INFO L137 Inliner]: procedures = 116, calls = 30, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 77 [2021-11-20 06:18:38,246 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 06:18:38,247 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 06:18:38,247 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 06:18:38,247 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 06:18:38,257 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:18:38" (1/1) ... [2021-11-20 06:18:38,257 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:18:38" (1/1) ... [2021-11-20 06:18:38,266 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:18:38" (1/1) ... [2021-11-20 06:18:38,268 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:18:38" (1/1) ... [2021-11-20 06:18:38,275 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:18:38" (1/1) ... [2021-11-20 06:18:38,284 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:18:38" (1/1) ... [2021-11-20 06:18:38,286 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:18:38" (1/1) ... [2021-11-20 06:18:38,289 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 06:18:38,290 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 06:18:38,290 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 06:18:38,290 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 06:18:38,291 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:18:38" (1/1) ... [2021-11-20 06:18:38,300 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:18:38,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d57c99ea-1647-49f1-8d71-a9f5cfd4556c/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:18:38,338 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d57c99ea-1647-49f1-8d71-a9f5cfd4556c/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 06:18:38,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d57c99ea-1647-49f1-8d71-a9f5cfd4556c/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 06:18:38,385 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 06:18:38,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 06:18:38,386 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 06:18:38,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 06:18:38,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 06:18:38,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 06:18:38,518 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 06:18:38,520 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 06:18:38,825 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 06:18:38,832 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 06:18:38,833 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-20 06:18:38,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:18:38 BoogieIcfgContainer [2021-11-20 06:18:38,835 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 06:18:38,837 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 06:18:38,837 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 06:18:38,841 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 06:18:38,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:18:37" (1/3) ... [2021-11-20 06:18:38,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5949727e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:18:38, skipping insertion in model container [2021-11-20 06:18:38,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:18:38" (2/3) ... [2021-11-20 06:18:38,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5949727e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:18:38, skipping insertion in model container [2021-11-20 06:18:38,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:18:38" (3/3) ... [2021-11-20 06:18:38,845 INFO L111 eAbstractionObserver]: Analyzing ICFG c.03-alloca-2.i [2021-11-20 06:18:38,850 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 06:18:38,851 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 31 error locations. [2021-11-20 06:18:38,893 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 06:18:38,901 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 06:18:38,907 INFO L340 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2021-11-20 06:18:38,922 INFO L276 IsEmpty]: Start isEmpty. Operand has 58 states, 26 states have (on average 2.3076923076923075) internal successors, (60), 57 states have internal predecessors, (60), 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) [2021-11-20 06:18:38,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-20 06:18:38,929 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:18:38,930 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-20 06:18:38,930 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 27 more)] === [2021-11-20 06:18:38,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:18:38,936 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2021-11-20 06:18:38,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:18:38,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671402734] [2021-11-20 06:18:38,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:18:38,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:18:39,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:39,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:18:39,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:18:39,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671402734] [2021-11-20 06:18:39,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671402734] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:18:39,139 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:18:39,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 06:18:39,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121296607] [2021-11-20 06:18:39,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:18:39,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:18:39,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:18:39,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:18:39,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:18:39,177 INFO L87 Difference]: Start difference. First operand has 58 states, 26 states have (on average 2.3076923076923075) internal successors, (60), 57 states have internal predecessors, (60), 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, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2021-11-20 06:18:39,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:18:39,295 INFO L93 Difference]: Finished difference Result 53 states and 54 transitions. [2021-11-20 06:18:39,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:18:39,304 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) Word has length 3 [2021-11-20 06:18:39,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:18:39,310 INFO L225 Difference]: With dead ends: 53 [2021-11-20 06:18:39,310 INFO L226 Difference]: Without dead ends: 51 [2021-11-20 06:18:39,312 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:18:39,316 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 47 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:18:39,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 25 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:18:39,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-11-20 06:18:39,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-11-20 06:18:39,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 25 states have (on average 2.08) internal successors, (52), 50 states have internal predecessors, (52), 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) [2021-11-20 06:18:39,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2021-11-20 06:18:39,350 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 3 [2021-11-20 06:18:39,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:18:39,350 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2021-11-20 06:18:39,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2021-11-20 06:18:39,351 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2021-11-20 06:18:39,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-20 06:18:39,352 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:18:39,352 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-20 06:18:39,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 06:18:39,352 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 27 more)] === [2021-11-20 06:18:39,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:18:39,357 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-11-20 06:18:39,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:18:39,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109234682] [2021-11-20 06:18:39,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:18:39,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:18:39,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:39,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:18:39,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:18:39,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109234682] [2021-11-20 06:18:39,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109234682] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:18:39,456 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:18:39,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 06:18:39,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383809468] [2021-11-20 06:18:39,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:18:39,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:18:39,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:18:39,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:18:39,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:18:39,459 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2021-11-20 06:18:39,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:18:39,512 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2021-11-20 06:18:39,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:18:39,513 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) Word has length 3 [2021-11-20 06:18:39,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:18:39,514 INFO L225 Difference]: With dead ends: 46 [2021-11-20 06:18:39,514 INFO L226 Difference]: Without dead ends: 46 [2021-11-20 06:18:39,514 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:18:39,516 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 45 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:18:39,517 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 23 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:18:39,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-11-20 06:18:39,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2021-11-20 06:18:39,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 25 states have (on average 1.88) internal successors, (47), 45 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:18:39,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2021-11-20 06:18:39,524 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 3 [2021-11-20 06:18:39,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:18:39,524 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2021-11-20 06:18:39,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2021-11-20 06:18:39,524 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2021-11-20 06:18:39,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-20 06:18:39,525 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:18:39,525 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-20 06:18:39,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 06:18:39,525 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 27 more)] === [2021-11-20 06:18:39,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:18:39,526 INFO L85 PathProgramCache]: Analyzing trace with hash 925543, now seen corresponding path program 1 times [2021-11-20 06:18:39,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:18:39,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743199544] [2021-11-20 06:18:39,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:18:39,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:18:39,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:39,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:18:39,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:18:39,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743199544] [2021-11-20 06:18:39,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743199544] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:18:39,627 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:18:39,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 06:18:39,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791410340] [2021-11-20 06:18:39,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:18:39,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:18:39,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:18:39,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:18:39,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:18:39,629 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand has 3 states, 2 states have (on average 2.0) 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) [2021-11-20 06:18:39,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:18:39,690 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2021-11-20 06:18:39,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:18:39,691 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) 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) Word has length 4 [2021-11-20 06:18:39,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:18:39,692 INFO L225 Difference]: With dead ends: 44 [2021-11-20 06:18:39,692 INFO L226 Difference]: Without dead ends: 44 [2021-11-20 06:18:39,692 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:18:39,694 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 39 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:18:39,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 20 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:18:39,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-11-20 06:18:39,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2021-11-20 06:18:39,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 25 states have (on average 1.8) internal successors, (45), 43 states have internal predecessors, (45), 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) [2021-11-20 06:18:39,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2021-11-20 06:18:39,701 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 4 [2021-11-20 06:18:39,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:18:39,701 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2021-11-20 06:18:39,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) 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) [2021-11-20 06:18:39,701 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2021-11-20 06:18:39,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-20 06:18:39,702 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:18:39,702 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-20 06:18:39,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 06:18:39,702 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 27 more)] === [2021-11-20 06:18:39,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:18:39,703 INFO L85 PathProgramCache]: Analyzing trace with hash 925544, now seen corresponding path program 1 times [2021-11-20 06:18:39,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:18:39,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546533560] [2021-11-20 06:18:39,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:18:39,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:18:39,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:39,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:18:39,764 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:18:39,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546533560] [2021-11-20 06:18:39,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546533560] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:18:39,765 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:18:39,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 06:18:39,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067873761] [2021-11-20 06:18:39,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:18:39,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:18:39,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:18:39,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:18:39,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:18:39,768 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand has 3 states, 2 states have (on average 2.0) 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) [2021-11-20 06:18:39,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:18:39,821 INFO L93 Difference]: Finished difference Result 42 states and 43 transitions. [2021-11-20 06:18:39,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:18:39,823 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) 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) Word has length 4 [2021-11-20 06:18:39,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:18:39,824 INFO L225 Difference]: With dead ends: 42 [2021-11-20 06:18:39,825 INFO L226 Difference]: Without dead ends: 42 [2021-11-20 06:18:39,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:18:39,835 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 40 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:18:39,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 21 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:18:39,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-11-20 06:18:39,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-11-20 06:18:39,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 25 states have (on average 1.72) internal successors, (43), 41 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:18:39,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2021-11-20 06:18:39,849 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 4 [2021-11-20 06:18:39,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:18:39,850 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2021-11-20 06:18:39,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) 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) [2021-11-20 06:18:39,850 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2021-11-20 06:18:39,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-20 06:18:39,851 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:18:39,851 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-20 06:18:39,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 06:18:39,852 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 27 more)] === [2021-11-20 06:18:39,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:18:39,853 INFO L85 PathProgramCache]: Analyzing trace with hash 28691812, now seen corresponding path program 1 times [2021-11-20 06:18:39,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:18:39,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927148391] [2021-11-20 06:18:39,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:18:39,854 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:18:39,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:39,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:18:39,898 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:18:39,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927148391] [2021-11-20 06:18:39,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927148391] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:18:39,899 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:18:39,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 06:18:39,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552016225] [2021-11-20 06:18:39,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:18:39,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:18:39,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:18:39,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:18:39,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:18:39,901 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:18:39,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:18:39,936 INFO L93 Difference]: Finished difference Result 38 states and 39 transitions. [2021-11-20 06:18:39,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:18:39,937 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-20 06:18:39,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:18:39,938 INFO L225 Difference]: With dead ends: 38 [2021-11-20 06:18:39,938 INFO L226 Difference]: Without dead ends: 38 [2021-11-20 06:18:39,938 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:18:39,940 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 32 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:18:39,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 16 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:18:39,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-11-20 06:18:39,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-11-20 06:18:39,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 25 states have (on average 1.56) internal successors, (39), 37 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:18:39,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2021-11-20 06:18:39,954 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 5 [2021-11-20 06:18:39,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:18:39,954 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2021-11-20 06:18:39,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:18:39,955 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2021-11-20 06:18:39,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-20 06:18:39,957 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:18:39,959 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-20 06:18:39,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 06:18:39,960 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 27 more)] === [2021-11-20 06:18:39,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:18:39,961 INFO L85 PathProgramCache]: Analyzing trace with hash 28691813, now seen corresponding path program 1 times [2021-11-20 06:18:39,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:18:39,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521840302] [2021-11-20 06:18:39,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:18:39,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:18:39,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:40,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:18:40,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:18:40,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521840302] [2021-11-20 06:18:40,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521840302] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:18:40,045 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:18:40,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 06:18:40,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134463119] [2021-11-20 06:18:40,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:18:40,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:18:40,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:18:40,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:18:40,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:18:40,047 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:18:40,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:18:40,096 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2021-11-20 06:18:40,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:18:40,096 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-20 06:18:40,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:18:40,098 INFO L225 Difference]: With dead ends: 34 [2021-11-20 06:18:40,099 INFO L226 Difference]: Without dead ends: 34 [2021-11-20 06:18:40,099 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:18:40,100 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 31 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:18:40,106 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 17 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:18:40,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-11-20 06:18:40,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-11-20 06:18:40,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 25 states have (on average 1.4) internal successors, (35), 33 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:18:40,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2021-11-20 06:18:40,113 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 5 [2021-11-20 06:18:40,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:18:40,113 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2021-11-20 06:18:40,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:18:40,114 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2021-11-20 06:18:40,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-20 06:18:40,114 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:18:40,114 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-20 06:18:40,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 06:18:40,115 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 27 more)] === [2021-11-20 06:18:40,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:18:40,116 INFO L85 PathProgramCache]: Analyzing trace with hash 889446154, now seen corresponding path program 1 times [2021-11-20 06:18:40,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:18:40,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603589707] [2021-11-20 06:18:40,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:18:40,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:18:40,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:40,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:18:40,170 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:18:40,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603589707] [2021-11-20 06:18:40,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603589707] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:18:40,170 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:18:40,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 06:18:40,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779925872] [2021-11-20 06:18:40,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:18:40,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:18:40,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:18:40,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:18:40,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:18:40,174 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-11-20 06:18:40,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:18:40,209 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2021-11-20 06:18:40,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:18:40,210 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) Word has length 6 [2021-11-20 06:18:40,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:18:40,212 INFO L225 Difference]: With dead ends: 30 [2021-11-20 06:18:40,214 INFO L226 Difference]: Without dead ends: 30 [2021-11-20 06:18:40,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:18:40,215 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 23 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:18:40,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 12 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:18:40,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-11-20 06:18:40,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-11-20 06:18:40,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 25 states have (on average 1.24) internal successors, (31), 29 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:18:40,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2021-11-20 06:18:40,230 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 6 [2021-11-20 06:18:40,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:18:40,230 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2021-11-20 06:18:40,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-11-20 06:18:40,230 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2021-11-20 06:18:40,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-20 06:18:40,231 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:18:40,231 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-20 06:18:40,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 06:18:40,231 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 27 more)] === [2021-11-20 06:18:40,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:18:40,233 INFO L85 PathProgramCache]: Analyzing trace with hash 889446155, now seen corresponding path program 1 times [2021-11-20 06:18:40,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:18:40,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764195296] [2021-11-20 06:18:40,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:18:40,234 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:18:40,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:40,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:18:40,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:18:40,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764195296] [2021-11-20 06:18:40,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764195296] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:18:40,300 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:18:40,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 06:18:40,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529350205] [2021-11-20 06:18:40,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:18:40,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:18:40,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:18:40,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:18:40,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:18:40,304 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-11-20 06:18:40,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:18:40,327 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2021-11-20 06:18:40,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:18:40,327 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) Word has length 6 [2021-11-20 06:18:40,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:18:40,328 INFO L225 Difference]: With dead ends: 26 [2021-11-20 06:18:40,328 INFO L226 Difference]: Without dead ends: 26 [2021-11-20 06:18:40,328 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:18:40,329 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 22 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:18:40,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 13 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:18:40,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-11-20 06:18:40,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-11-20 06:18:40,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.08) internal successors, (27), 25 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:18:40,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2021-11-20 06:18:40,332 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 6 [2021-11-20 06:18:40,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:18:40,333 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2021-11-20 06:18:40,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-11-20 06:18:40,333 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2021-11-20 06:18:40,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-20 06:18:40,333 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:18:40,333 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:18:40,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 06:18:40,334 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 27 more)] === [2021-11-20 06:18:40,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:18:40,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1831182508, now seen corresponding path program 1 times [2021-11-20 06:18:40,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:18:40,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736025662] [2021-11-20 06:18:40,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:18:40,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:18:40,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:40,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:18:40,677 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:18:40,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736025662] [2021-11-20 06:18:40,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736025662] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:18:40,678 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:18:40,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:18:40,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80488113] [2021-11-20 06:18:40,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:18:40,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:18:40,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:18:40,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:18:40,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:18:40,681 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 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) [2021-11-20 06:18:40,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:18:40,743 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2021-11-20 06:18:40,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:18:40,744 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 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) Word has length 13 [2021-11-20 06:18:40,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:18:40,744 INFO L225 Difference]: With dead ends: 25 [2021-11-20 06:18:40,744 INFO L226 Difference]: Without dead ends: 0 [2021-11-20 06:18:40,744 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:18:40,747 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 14 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:18:40,751 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 18 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:18:40,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-20 06:18:40,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-20 06:18:40,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-11-20 06:18:40,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-20 06:18:40,753 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2021-11-20 06:18:40,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:18:40,754 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-20 06:18:40,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 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) [2021-11-20 06:18:40,754 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-20 06:18:40,754 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-20 06:18:40,757 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATION (30 of 31 remaining) [2021-11-20 06:18:40,757 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATION (29 of 31 remaining) [2021-11-20 06:18:40,757 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATION (28 of 31 remaining) [2021-11-20 06:18:40,758 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATION (27 of 31 remaining) [2021-11-20 06:18:40,758 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATION (26 of 31 remaining) [2021-11-20 06:18:40,758 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATION (25 of 31 remaining) [2021-11-20 06:18:40,758 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATION (24 of 31 remaining) [2021-11-20 06:18:40,758 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATION (23 of 31 remaining) [2021-11-20 06:18:40,758 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATION (22 of 31 remaining) [2021-11-20 06:18:40,759 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATION (21 of 31 remaining) [2021-11-20 06:18:40,759 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATION (20 of 31 remaining) [2021-11-20 06:18:40,759 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATION (19 of 31 remaining) [2021-11-20 06:18:40,759 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12REQUIRES_VIOLATION (18 of 31 remaining) [2021-11-20 06:18:40,759 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13REQUIRES_VIOLATION (17 of 31 remaining) [2021-11-20 06:18:40,760 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14REQUIRES_VIOLATION (16 of 31 remaining) [2021-11-20 06:18:40,760 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15REQUIRES_VIOLATION (15 of 31 remaining) [2021-11-20 06:18:40,760 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16REQUIRES_VIOLATION (14 of 31 remaining) [2021-11-20 06:18:40,760 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17REQUIRES_VIOLATION (13 of 31 remaining) [2021-11-20 06:18:40,760 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr18REQUIRES_VIOLATION (12 of 31 remaining) [2021-11-20 06:18:40,760 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr19REQUIRES_VIOLATION (11 of 31 remaining) [2021-11-20 06:18:40,761 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr20REQUIRES_VIOLATION (10 of 31 remaining) [2021-11-20 06:18:40,761 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr21REQUIRES_VIOLATION (9 of 31 remaining) [2021-11-20 06:18:40,761 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr22REQUIRES_VIOLATION (8 of 31 remaining) [2021-11-20 06:18:40,761 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr23REQUIRES_VIOLATION (7 of 31 remaining) [2021-11-20 06:18:40,762 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr24REQUIRES_VIOLATION (6 of 31 remaining) [2021-11-20 06:18:40,762 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr25REQUIRES_VIOLATION (5 of 31 remaining) [2021-11-20 06:18:40,762 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr26REQUIRES_VIOLATION (4 of 31 remaining) [2021-11-20 06:18:40,762 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr27REQUIRES_VIOLATION (3 of 31 remaining) [2021-11-20 06:18:40,762 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr28REQUIRES_VIOLATION (2 of 31 remaining) [2021-11-20 06:18:40,762 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr29REQUIRES_VIOLATION (1 of 31 remaining) [2021-11-20 06:18:40,763 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (0 of 31 remaining) [2021-11-20 06:18:40,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-20 06:18:40,767 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:18:40,769 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 06:18:40,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 06:18:40 BoogieIcfgContainer [2021-11-20 06:18:40,773 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 06:18:40,774 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 06:18:40,774 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 06:18:40,774 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 06:18:40,775 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:18:38" (3/4) ... [2021-11-20 06:18:40,780 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-20 06:18:40,795 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2021-11-20 06:18:40,796 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-20 06:18:40,796 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-20 06:18:40,796 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-20 06:18:40,853 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d57c99ea-1647-49f1-8d71-a9f5cfd4556c/bin/uautomizer-DQz5hQGWxF/witness.graphml [2021-11-20 06:18:40,853 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 06:18:40,854 INFO L158 Benchmark]: Toolchain (without parser) took 3089.97ms. Allocated memory is still 123.7MB. Free memory was 96.3MB in the beginning and 77.5MB in the end (delta: 18.7MB). Peak memory consumption was 21.4MB. Max. memory is 16.1GB. [2021-11-20 06:18:40,854 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 88.1MB. Free memory was 55.2MB in the beginning and 55.1MB in the end (delta: 41.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:18:40,855 INFO L158 Benchmark]: CACSL2BoogieTranslator took 431.67ms. Allocated memory is still 123.7MB. Free memory was 96.1MB in the beginning and 80.8MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-20 06:18:40,855 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.16ms. Allocated memory is still 123.7MB. Free memory was 80.8MB in the beginning and 78.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 06:18:40,856 INFO L158 Benchmark]: Boogie Preprocessor took 41.86ms. Allocated memory is still 123.7MB. Free memory was 78.8MB in the beginning and 77.6MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:18:40,856 INFO L158 Benchmark]: RCFGBuilder took 545.38ms. Allocated memory is still 123.7MB. Free memory was 77.6MB in the beginning and 63.7MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-20 06:18:40,856 INFO L158 Benchmark]: TraceAbstraction took 1936.44ms. Allocated memory is still 123.7MB. Free memory was 63.3MB in the beginning and 81.2MB in the end (delta: -17.9MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:18:40,857 INFO L158 Benchmark]: Witness Printer took 79.38ms. Allocated memory is still 123.7MB. Free memory was 81.2MB in the beginning and 77.5MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-20 06:18:40,860 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 88.1MB. Free memory was 55.2MB in the beginning and 55.1MB in the end (delta: 41.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 431.67ms. Allocated memory is still 123.7MB. Free memory was 96.1MB in the beginning and 80.8MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.16ms. Allocated memory is still 123.7MB. Free memory was 80.8MB in the beginning and 78.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.86ms. Allocated memory is still 123.7MB. Free memory was 78.8MB in the beginning and 77.6MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 545.38ms. Allocated memory is still 123.7MB. Free memory was 77.6MB in the beginning and 63.7MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 1936.44ms. Allocated memory is still 123.7MB. Free memory was 63.3MB in the beginning and 81.2MB in the end (delta: -17.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 79.38ms. Allocated memory is still 123.7MB. Free memory was 81.2MB in the beginning and 77.5MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 518]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 518]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 519]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 519]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 520]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 520]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 521]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 521]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 522]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 522]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 522]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 522]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 523]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 523]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 523]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 523]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 524]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 524]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 524]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 524]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 526]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 526]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 526]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 526]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 528]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 528]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 528]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 528]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 530]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 530]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 532]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 58 locations, 31 error locations. Started 1 CEGAR loops. OverallTime: 1.9s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 293 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 293 mSDsluCounter, 165 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 17 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 231 IncrementalHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 148 mSDtfsCounter, 231 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred in iteration=0, InterpolantAutomatonStates: 28, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 783 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 31 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-11-20 06:18:40,930 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d57c99ea-1647-49f1-8d71-a9f5cfd4556c/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE