./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/termination-memory-alloca/a.08-alloca.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55953b0-2919-4ba5-aa17-e0cad2b0ddd8/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55953b0-2919-4ba5-aa17-e0cad2b0ddd8/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55953b0-2919-4ba5-aa17-e0cad2b0ddd8/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55953b0-2919-4ba5-aa17-e0cad2b0ddd8/bin/uautomizer-ug76WZFUDN/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-memory-alloca/a.08-alloca.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55953b0-2919-4ba5-aa17-e0cad2b0ddd8/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55953b0-2919-4ba5-aa17-e0cad2b0ddd8/bin/uautomizer-ug76WZFUDN --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 64bit --witnessprinter.graph.data.programhash 6c2edc31dcdc4b2a4abe4268de27cc56aedb322bc6628c226d1c7bd6753071a5 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 11:24:34,106 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:24:34,109 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:24:34,148 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:24:34,148 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:24:34,152 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:24:34,155 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:24:34,158 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:24:34,164 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:24:34,166 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:24:34,167 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:24:34,168 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:24:34,169 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:24:34,170 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:24:34,171 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:24:34,172 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:24:34,173 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:24:34,174 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:24:34,178 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:24:34,186 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:24:34,190 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:24:34,195 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:24:34,197 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:24:34,199 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:24:34,209 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:24:34,209 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:24:34,210 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:24:34,211 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:24:34,211 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:24:34,212 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:24:34,212 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:24:34,213 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:24:34,214 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:24:34,215 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:24:34,216 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:24:34,217 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:24:34,218 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:24:34,218 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:24:34,218 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:24:34,219 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:24:34,220 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:24:34,221 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55953b0-2919-4ba5-aa17-e0cad2b0ddd8/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2022-11-20 11:24:34,247 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:24:34,249 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:24:34,249 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:24:34,250 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:24:34,251 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:24:34,251 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:24:34,252 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:24:34,252 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:24:34,252 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:24:34,253 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:24:34,254 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 11:24:34,254 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:24:34,254 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:24:34,255 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-20 11:24:34,255 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-20 11:24:34,255 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-20 11:24:34,255 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:24:34,256 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 11:24:34,256 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:24:34,256 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:24:34,256 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:24:34,257 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:24:34,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:24:34,257 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:24:34,257 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:24:34,258 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:24:34,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:24:34,258 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_e55953b0-2919-4ba5-aa17-e0cad2b0ddd8/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55953b0-2919-4ba5-aa17-e0cad2b0ddd8/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6c2edc31dcdc4b2a4abe4268de27cc56aedb322bc6628c226d1c7bd6753071a5 [2022-11-20 11:24:34,648 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:24:34,688 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:24:34,691 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:24:34,692 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:24:34,693 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:24:34,695 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55953b0-2919-4ba5-aa17-e0cad2b0ddd8/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/termination-memory-alloca/a.08-alloca.i [2022-11-20 11:24:38,361 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:24:38,670 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:24:38,670 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55953b0-2919-4ba5-aa17-e0cad2b0ddd8/sv-benchmarks/c/termination-memory-alloca/a.08-alloca.i [2022-11-20 11:24:38,690 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55953b0-2919-4ba5-aa17-e0cad2b0ddd8/bin/uautomizer-ug76WZFUDN/data/32b6fe46e/96d2593b64e943e1b4c6183028148280/FLAG250db2c31 [2022-11-20 11:24:38,708 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55953b0-2919-4ba5-aa17-e0cad2b0ddd8/bin/uautomizer-ug76WZFUDN/data/32b6fe46e/96d2593b64e943e1b4c6183028148280 [2022-11-20 11:24:38,711 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:24:38,713 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:24:38,714 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:24:38,715 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:24:38,730 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:24:38,731 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:24:38" (1/1) ... [2022-11-20 11:24:38,733 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a49a759 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:24:38, skipping insertion in model container [2022-11-20 11:24:38,733 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:24:38" (1/1) ... [2022-11-20 11:24:38,743 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:24:38,791 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:24:39,115 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:24:39,132 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:24:39,211 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:24:39,246 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:24:39,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:24:39 WrapperNode [2022-11-20 11:24:39,247 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:24:39,250 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:24:39,250 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:24:39,250 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:24:39,259 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:24:39" (1/1) ... [2022-11-20 11:24:39,285 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:24:39" (1/1) ... [2022-11-20 11:24:39,317 INFO L138 Inliner]: procedures = 111, calls = 23, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 65 [2022-11-20 11:24:39,317 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:24:39,320 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:24:39,320 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:24:39,321 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:24:39,332 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:24:39" (1/1) ... [2022-11-20 11:24:39,333 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:24:39" (1/1) ... [2022-11-20 11:24:39,352 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:24:39" (1/1) ... [2022-11-20 11:24:39,352 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:24:39" (1/1) ... [2022-11-20 11:24:39,356 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:24:39" (1/1) ... [2022-11-20 11:24:39,369 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:24:39" (1/1) ... [2022-11-20 11:24:39,371 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:24:39" (1/1) ... [2022-11-20 11:24:39,380 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:24:39" (1/1) ... [2022-11-20 11:24:39,383 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:24:39,384 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:24:39,384 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:24:39,384 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:24:39,385 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:24:39" (1/1) ... [2022-11-20 11:24:39,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:24:39,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55953b0-2919-4ba5-aa17-e0cad2b0ddd8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:24:39,433 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55953b0-2919-4ba5-aa17-e0cad2b0ddd8/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:24:39,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55953b0-2919-4ba5-aa17-e0cad2b0ddd8/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:24:39,482 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 11:24:39,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:24:39,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:24:39,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:24:39,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:24:39,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:24:39,623 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:24:39,625 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:24:39,965 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:24:39,975 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:24:39,976 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 11:24:39,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:24:39 BoogieIcfgContainer [2022-11-20 11:24:39,980 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:24:39,984 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:24:39,984 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:24:39,988 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:24:39,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:24:38" (1/3) ... [2022-11-20 11:24:39,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6292724e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:24:39, skipping insertion in model container [2022-11-20 11:24:39,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:24:39" (2/3) ... [2022-11-20 11:24:39,990 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6292724e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:24:39, skipping insertion in model container [2022-11-20 11:24:39,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:24:39" (3/3) ... [2022-11-20 11:24:40,000 INFO L112 eAbstractionObserver]: Analyzing ICFG a.08-alloca.i [2022-11-20 11:24:40,035 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:24:40,035 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 23 error locations. [2022-11-20 11:24:40,087 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:24:40,095 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2b18e0e8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:24:40,096 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2022-11-20 11:24:40,101 INFO L276 IsEmpty]: Start isEmpty. Operand has 47 states, 23 states have (on average 2.130434782608696) internal successors, (49), 46 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:40,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-20 11:24:40,109 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:24:40,110 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-20 11:24:40,111 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 11:24:40,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:24:40,126 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2022-11-20 11:24:40,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:24:40,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284729249] [2022-11-20 11:24:40,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:24:40,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:24:40,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:24:40,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:24:40,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:24:40,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284729249] [2022-11-20 11:24:40,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284729249] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:24:40,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:24:40,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:24:40,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606773747] [2022-11-20 11:24:40,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:24:40,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:24:40,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:24:40,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:24:40,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:24:40,838 INFO L87 Difference]: Start difference. First operand has 47 states, 23 states have (on average 2.130434782608696) internal successors, (49), 46 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) 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) [2022-11-20 11:24:40,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:24:40,962 INFO L93 Difference]: Finished difference Result 42 states and 43 transitions. [2022-11-20 11:24:40,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:24:40,966 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 [2022-11-20 11:24:40,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:24:40,975 INFO L225 Difference]: With dead ends: 42 [2022-11-20 11:24:40,976 INFO L226 Difference]: Without dead ends: 40 [2022-11-20 11:24:40,978 INFO L412 NwaCegarLoop]: 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 [2022-11-20 11:24:40,982 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 36 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:24:40,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 22 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:24:41,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-11-20 11:24:41,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2022-11-20 11:24:41,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 39 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:41,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2022-11-20 11:24:41,026 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 3 [2022-11-20 11:24:41,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:24:41,026 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2022-11-20 11:24:41,027 INFO L496 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) [2022-11-20 11:24:41,027 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2022-11-20 11:24:41,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-20 11:24:41,028 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:24:41,028 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-20 11:24:41,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:24:41,029 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 11:24:41,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:24:41,030 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2022-11-20 11:24:41,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:24:41,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480547483] [2022-11-20 11:24:41,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:24:41,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:24:41,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:24:41,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:24:41,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:24:41,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480547483] [2022-11-20 11:24:41,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480547483] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:24:41,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:24:41,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:24:41,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391017032] [2022-11-20 11:24:41,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:24:41,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:24:41,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:24:41,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:24:41,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:24:41,228 INFO L87 Difference]: Start difference. First operand 40 states and 41 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) [2022-11-20 11:24:41,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:24:41,279 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2022-11-20 11:24:41,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:24:41,280 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 [2022-11-20 11:24:41,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:24:41,281 INFO L225 Difference]: With dead ends: 35 [2022-11-20 11:24:41,282 INFO L226 Difference]: Without dead ends: 35 [2022-11-20 11:24:41,282 INFO L412 NwaCegarLoop]: 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 [2022-11-20 11:24:41,284 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 34 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:24:41,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 20 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:24:41,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-11-20 11:24:41,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-11-20 11:24:41,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 34 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:41,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2022-11-20 11:24:41,291 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 3 [2022-11-20 11:24:41,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:24:41,292 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2022-11-20 11:24:41,292 INFO L496 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) [2022-11-20 11:24:41,293 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2022-11-20 11:24:41,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-20 11:24:41,293 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:24:41,294 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-20 11:24:41,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:24:41,294 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 11:24:41,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:24:41,295 INFO L85 PathProgramCache]: Analyzing trace with hash 925543, now seen corresponding path program 1 times [2022-11-20 11:24:41,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:24:41,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698863772] [2022-11-20 11:24:41,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:24:41,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:24:41,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:24:41,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:24:41,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:24:41,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698863772] [2022-11-20 11:24:41,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698863772] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:24:41,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:24:41,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:24:41,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230026140] [2022-11-20 11:24:41,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:24:41,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:24:41,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:24:41,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:24:41,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:24:41,433 INFO L87 Difference]: Start difference. First operand 35 states and 36 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) [2022-11-20 11:24:41,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:24:41,482 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2022-11-20 11:24:41,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:24:41,483 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 [2022-11-20 11:24:41,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:24:41,484 INFO L225 Difference]: With dead ends: 31 [2022-11-20 11:24:41,484 INFO L226 Difference]: Without dead ends: 31 [2022-11-20 11:24:41,484 INFO L412 NwaCegarLoop]: 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 [2022-11-20 11:24:41,486 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 26 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:24:41,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 15 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:24:41,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-20 11:24:41,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-11-20 11:24:41,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 30 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:41,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2022-11-20 11:24:41,492 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 4 [2022-11-20 11:24:41,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:24:41,492 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2022-11-20 11:24:41,493 INFO L496 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) [2022-11-20 11:24:41,493 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2022-11-20 11:24:41,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-20 11:24:41,494 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:24:41,494 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-20 11:24:41,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 11:24:41,495 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 11:24:41,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:24:41,496 INFO L85 PathProgramCache]: Analyzing trace with hash 925544, now seen corresponding path program 1 times [2022-11-20 11:24:41,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:24:41,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998154655] [2022-11-20 11:24:41,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:24:41,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:24:41,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:24:41,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:24:41,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:24:41,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998154655] [2022-11-20 11:24:41,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998154655] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:24:41,683 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:24:41,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:24:41,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252433772] [2022-11-20 11:24:41,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:24:41,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:24:41,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:24:41,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:24:41,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:24:41,686 INFO L87 Difference]: Start difference. First operand 31 states and 32 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) [2022-11-20 11:24:41,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:24:41,747 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2022-11-20 11:24:41,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:24:41,747 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 [2022-11-20 11:24:41,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:24:41,748 INFO L225 Difference]: With dead ends: 27 [2022-11-20 11:24:41,748 INFO L226 Difference]: Without dead ends: 27 [2022-11-20 11:24:41,749 INFO L412 NwaCegarLoop]: 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 [2022-11-20 11:24:41,750 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 25 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:24:41,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 16 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:24:41,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-20 11:24:41,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-11-20 11:24:41,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 26 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:41,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2022-11-20 11:24:41,756 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 4 [2022-11-20 11:24:41,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:24:41,756 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2022-11-20 11:24:41,756 INFO L496 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) [2022-11-20 11:24:41,757 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2022-11-20 11:24:41,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 11:24:41,757 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:24:41,757 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 11:24:41,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 11:24:41,758 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 11:24:41,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:24:41,759 INFO L85 PathProgramCache]: Analyzing trace with hash 28691812, now seen corresponding path program 1 times [2022-11-20 11:24:41,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:24:41,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887392200] [2022-11-20 11:24:41,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:24:41,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:24:41,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:24:41,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:24:41,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:24:41,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887392200] [2022-11-20 11:24:41,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887392200] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:24:41,841 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:24:41,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:24:41,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041027197] [2022-11-20 11:24:41,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:24:41,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:24:41,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:24:41,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:24:41,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:24:41,844 INFO L87 Difference]: Start difference. First operand 27 states and 28 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) [2022-11-20 11:24:41,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:24:41,877 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2022-11-20 11:24:41,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:24:41,878 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 [2022-11-20 11:24:41,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:24:41,879 INFO L225 Difference]: With dead ends: 25 [2022-11-20 11:24:41,879 INFO L226 Difference]: Without dead ends: 25 [2022-11-20 11:24:41,879 INFO L412 NwaCegarLoop]: 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 [2022-11-20 11:24:41,881 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 19 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:24:41,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 13 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:24:41,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-11-20 11:24:41,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-11-20 11:24:41,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 24 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:41,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2022-11-20 11:24:41,886 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 5 [2022-11-20 11:24:41,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:24:41,887 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2022-11-20 11:24:41,887 INFO L496 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) [2022-11-20 11:24:41,888 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2022-11-20 11:24:41,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 11:24:41,888 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:24:41,888 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 11:24:41,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 11:24:41,889 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 11:24:41,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:24:41,890 INFO L85 PathProgramCache]: Analyzing trace with hash 28691813, now seen corresponding path program 1 times [2022-11-20 11:24:41,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:24:41,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467208913] [2022-11-20 11:24:41,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:24:41,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:24:41,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:24:41,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:24:41,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:24:41,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467208913] [2022-11-20 11:24:41,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467208913] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:24:41,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:24:41,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:24:41,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006463791] [2022-11-20 11:24:41,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:24:41,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:24:41,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:24:41,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:24:41,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:24:41,987 INFO L87 Difference]: Start difference. First operand 25 states and 26 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) [2022-11-20 11:24:42,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:24:42,012 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2022-11-20 11:24:42,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:24:42,013 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 [2022-11-20 11:24:42,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:24:42,014 INFO L225 Difference]: With dead ends: 23 [2022-11-20 11:24:42,014 INFO L226 Difference]: Without dead ends: 23 [2022-11-20 11:24:42,014 INFO L412 NwaCegarLoop]: 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 [2022-11-20 11:24:42,016 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 20 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:24:42,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 14 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:24:42,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-20 11:24:42,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-11-20 11:24:42,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 22 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:42,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2022-11-20 11:24:42,020 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 5 [2022-11-20 11:24:42,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:24:42,021 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2022-11-20 11:24:42,021 INFO L496 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) [2022-11-20 11:24:42,021 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2022-11-20 11:24:42,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 11:24:42,022 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:24:42,023 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:24:42,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 11:24:42,023 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-20 11:24:42,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:24:42,024 INFO L85 PathProgramCache]: Analyzing trace with hash 513491385, now seen corresponding path program 1 times [2022-11-20 11:24:42,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:24:42,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747167282] [2022-11-20 11:24:42,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:24:42,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:24:42,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:24:42,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:24:42,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:24:42,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747167282] [2022-11-20 11:24:42,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747167282] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:24:42,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:24:42,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:24:42,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960543615] [2022-11-20 11:24:42,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:24:42,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:24:42,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:24:42,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:24:42,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:24:42,400 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:42,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:24:42,451 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2022-11-20 11:24:42,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:24:42,452 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-20 11:24:42,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:24:42,453 INFO L225 Difference]: With dead ends: 22 [2022-11-20 11:24:42,453 INFO L226 Difference]: Without dead ends: 0 [2022-11-20 11:24:42,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:24:42,455 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 19 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:24:42,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 21 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:24:42,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-20 11:24:42,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-20 11:24:42,457 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) [2022-11-20 11:24:42,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-20 11:24:42,457 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2022-11-20 11:24:42,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:24:42,458 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 11:24:42,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:42,458 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-20 11:24:42,459 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-20 11:24:42,462 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 23 remaining) [2022-11-20 11:24:42,463 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 23 remaining) [2022-11-20 11:24:42,463 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 23 remaining) [2022-11-20 11:24:42,463 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 23 remaining) [2022-11-20 11:24:42,464 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 23 remaining) [2022-11-20 11:24:42,464 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 23 remaining) [2022-11-20 11:24:42,464 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 23 remaining) [2022-11-20 11:24:42,464 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 23 remaining) [2022-11-20 11:24:42,465 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 23 remaining) [2022-11-20 11:24:42,465 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 23 remaining) [2022-11-20 11:24:42,465 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 23 remaining) [2022-11-20 11:24:42,466 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 23 remaining) [2022-11-20 11:24:42,466 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 23 remaining) [2022-11-20 11:24:42,466 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 23 remaining) [2022-11-20 11:24:42,467 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 23 remaining) [2022-11-20 11:24:42,467 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 23 remaining) [2022-11-20 11:24:42,467 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 23 remaining) [2022-11-20 11:24:42,468 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 23 remaining) [2022-11-20 11:24:42,468 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 23 remaining) [2022-11-20 11:24:42,468 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 23 remaining) [2022-11-20 11:24:42,469 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 23 remaining) [2022-11-20 11:24:42,469 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 23 remaining) [2022-11-20 11:24:42,469 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK (0 of 23 remaining) [2022-11-20 11:24:42,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 11:24:42,474 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:24:42,477 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 11:24:42,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 11:24:42 BoogieIcfgContainer [2022-11-20 11:24:42,481 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 11:24:42,482 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 11:24:42,482 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 11:24:42,482 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 11:24:42,483 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:24:39" (3/4) ... [2022-11-20 11:24:42,487 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 11:24:42,504 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2022-11-20 11:24:42,504 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-20 11:24:42,505 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-20 11:24:42,505 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 11:24:42,557 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55953b0-2919-4ba5-aa17-e0cad2b0ddd8/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 11:24:42,557 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 11:24:42,559 INFO L158 Benchmark]: Toolchain (without parser) took 3845.62ms. Allocated memory was 134.2MB in the beginning and 195.0MB in the end (delta: 60.8MB). Free memory was 91.1MB in the beginning and 70.8MB in the end (delta: 20.3MB). Peak memory consumption was 83.2MB. Max. memory is 16.1GB. [2022-11-20 11:24:42,559 INFO L158 Benchmark]: CDTParser took 0.62ms. Allocated memory is still 134.2MB. Free memory is still 106.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:24:42,560 INFO L158 Benchmark]: CACSL2BoogieTranslator took 534.39ms. Allocated memory is still 134.2MB. Free memory was 90.6MB in the beginning and 75.4MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-20 11:24:42,560 INFO L158 Benchmark]: Boogie Procedure Inliner took 69.46ms. Allocated memory is still 134.2MB. Free memory was 75.4MB in the beginning and 73.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 11:24:42,561 INFO L158 Benchmark]: Boogie Preprocessor took 63.06ms. Allocated memory is still 134.2MB. Free memory was 73.8MB in the beginning and 72.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:24:42,565 INFO L158 Benchmark]: RCFGBuilder took 596.84ms. Allocated memory is still 134.2MB. Free memory was 72.4MB in the beginning and 58.0MB in the end (delta: 14.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-20 11:24:42,566 INFO L158 Benchmark]: TraceAbstraction took 2497.49ms. Allocated memory was 134.2MB in the beginning and 195.0MB in the end (delta: 60.8MB). Free memory was 57.6MB in the beginning and 73.9MB in the end (delta: -16.3MB). Peak memory consumption was 47.6MB. Max. memory is 16.1GB. [2022-11-20 11:24:42,566 INFO L158 Benchmark]: Witness Printer took 75.77ms. Allocated memory is still 195.0MB. Free memory was 73.9MB in the beginning and 70.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 11:24:42,570 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.62ms. Allocated memory is still 134.2MB. Free memory is still 106.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 534.39ms. Allocated memory is still 134.2MB. Free memory was 90.6MB in the beginning and 75.4MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 69.46ms. Allocated memory is still 134.2MB. Free memory was 75.4MB in the beginning and 73.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 63.06ms. Allocated memory is still 134.2MB. Free memory was 73.8MB in the beginning and 72.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 596.84ms. Allocated memory is still 134.2MB. Free memory was 72.4MB in the beginning and 58.0MB in the end (delta: 14.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 2497.49ms. Allocated memory was 134.2MB in the beginning and 195.0MB in the end (delta: 60.8MB). Free memory was 57.6MB in the beginning and 73.9MB in the end (delta: -16.3MB). Peak memory consumption was 47.6MB. Max. memory is 16.1GB. * Witness Printer took 75.77ms. Allocated memory is still 195.0MB. Free memory was 73.9MB in the beginning and 70.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. 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: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 561]: 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, 47 locations, 23 error locations. Started 1 CEGAR loops. OverallTime: 2.4s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 179 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 179 mSDsluCounter, 121 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 17 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 135 IncrementalHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 104 mSDtfsCounter, 135 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred in iteration=0, InterpolantAutomatonStates: 22, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 31 ConstructedInterpolants, 0 QuantifiedInterpolants, 354 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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 23 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-20 11:24:42,626 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55953b0-2919-4ba5-aa17-e0cad2b0ddd8/bin/uautomizer-ug76WZFUDN/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