./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-regression/nested_structure-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- 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_e08caebe-85c4-4c65-bf93-9f96fe5151a6/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08caebe-85c4-4c65-bf93-9f96fe5151a6/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_e08caebe-85c4-4c65-bf93-9f96fe5151a6/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08caebe-85c4-4c65-bf93-9f96fe5151a6/bin/uautomizer-ug76WZFUDN/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-regression/nested_structure-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08caebe-85c4-4c65-bf93-9f96fe5151a6/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08caebe-85c4-4c65-bf93-9f96fe5151a6/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 32bit --witnessprinter.graph.data.programhash 8760dfb1fc705c9d4bd3086e926410b9e088fc0950cc71e69ebbf3367b49d459 --- 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 09:27:23,259 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 09:27:23,262 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 09:27:23,316 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 09:27:23,316 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 09:27:23,317 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 09:27:23,319 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 09:27:23,320 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 09:27:23,322 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 09:27:23,323 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 09:27:23,324 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 09:27:23,325 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 09:27:23,326 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 09:27:23,330 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 09:27:23,333 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 09:27:23,336 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 09:27:23,337 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 09:27:23,343 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 09:27:23,346 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 09:27:23,365 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 09:27:23,367 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 09:27:23,370 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 09:27:23,372 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 09:27:23,373 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 09:27:23,382 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 09:27:23,382 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 09:27:23,382 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 09:27:23,383 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 09:27:23,383 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 09:27:23,384 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 09:27:23,385 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 09:27:23,385 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 09:27:23,386 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 09:27:23,387 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 09:27:23,388 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 09:27:23,388 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 09:27:23,388 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 09:27:23,389 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 09:27:23,389 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 09:27:23,390 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 09:27:23,394 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 09:27:23,396 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08caebe-85c4-4c65-bf93-9f96fe5151a6/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-20 09:27:23,418 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 09:27:23,418 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 09:27:23,419 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 09:27:23,419 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 09:27:23,420 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 09:27:23,420 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 09:27:23,421 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 09:27:23,421 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 09:27:23,421 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 09:27:23,421 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 09:27:23,422 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 09:27:23,422 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 09:27:23,422 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 09:27:23,422 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 09:27:23,423 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 09:27:23,423 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-20 09:27:23,423 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-20 09:27:23,423 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-20 09:27:23,423 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 09:27:23,424 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 09:27:23,424 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 09:27:23,424 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 09:27:23,424 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 09:27:23,425 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 09:27:23,425 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 09:27:23,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:27:23,425 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 09:27:23,426 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 09:27:23,426 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 09:27:23,426 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 09:27:23,426 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_e08caebe-85c4-4c65-bf93-9f96fe5151a6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08caebe-85c4-4c65-bf93-9f96fe5151a6/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8760dfb1fc705c9d4bd3086e926410b9e088fc0950cc71e69ebbf3367b49d459 [2022-11-20 09:27:23,753 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 09:27:23,778 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 09:27:23,781 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 09:27:23,782 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 09:27:23,783 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 09:27:23,784 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08caebe-85c4-4c65-bf93-9f96fe5151a6/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/ldv-regression/nested_structure-1.i [2022-11-20 09:27:27,029 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 09:27:27,198 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 09:27:27,199 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08caebe-85c4-4c65-bf93-9f96fe5151a6/sv-benchmarks/c/ldv-regression/nested_structure-1.i [2022-11-20 09:27:27,206 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08caebe-85c4-4c65-bf93-9f96fe5151a6/bin/uautomizer-ug76WZFUDN/data/e55bcdb7b/02ed936d9d0a4808981c988c1a2b4d18/FLAG2d9e1ee85 [2022-11-20 09:27:27,222 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08caebe-85c4-4c65-bf93-9f96fe5151a6/bin/uautomizer-ug76WZFUDN/data/e55bcdb7b/02ed936d9d0a4808981c988c1a2b4d18 [2022-11-20 09:27:27,224 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 09:27:27,226 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 09:27:27,228 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 09:27:27,228 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 09:27:27,232 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 09:27:27,233 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:27:27" (1/1) ... [2022-11-20 09:27:27,234 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b113d18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:27, skipping insertion in model container [2022-11-20 09:27:27,234 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:27:27" (1/1) ... [2022-11-20 09:27:27,242 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 09:27:27,255 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 09:27:27,408 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08caebe-85c4-4c65-bf93-9f96fe5151a6/sv-benchmarks/c/ldv-regression/nested_structure-1.i[303,316] [2022-11-20 09:27:27,435 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:27:27,449 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 09:27:27,463 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08caebe-85c4-4c65-bf93-9f96fe5151a6/sv-benchmarks/c/ldv-regression/nested_structure-1.i[303,316] [2022-11-20 09:27:27,474 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:27:27,492 INFO L208 MainTranslator]: Completed translation [2022-11-20 09:27:27,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:27 WrapperNode [2022-11-20 09:27:27,494 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 09:27:27,496 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 09:27:27,496 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 09:27:27,497 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 09:27:27,504 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:27" (1/1) ... [2022-11-20 09:27:27,524 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:27" (1/1) ... [2022-11-20 09:27:27,546 INFO L138 Inliner]: procedures = 16, calls = 28, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 48 [2022-11-20 09:27:27,546 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 09:27:27,547 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 09:27:27,547 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 09:27:27,548 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 09:27:27,557 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:27" (1/1) ... [2022-11-20 09:27:27,557 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:27" (1/1) ... [2022-11-20 09:27:27,562 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:27" (1/1) ... [2022-11-20 09:27:27,563 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:27" (1/1) ... [2022-11-20 09:27:27,581 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:27" (1/1) ... [2022-11-20 09:27:27,584 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:27" (1/1) ... [2022-11-20 09:27:27,586 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:27" (1/1) ... [2022-11-20 09:27:27,587 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:27" (1/1) ... [2022-11-20 09:27:27,595 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 09:27:27,596 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 09:27:27,597 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 09:27:27,597 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 09:27:27,598 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:27" (1/1) ... [2022-11-20 09:27:27,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:27:27,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08caebe-85c4-4c65-bf93-9f96fe5151a6/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:27,668 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08caebe-85c4-4c65-bf93-9f96fe5151a6/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 09:27:27,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08caebe-85c4-4c65-bf93-9f96fe5151a6/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 09:27:27,739 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 09:27:27,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 09:27:27,756 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 09:27:27,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 09:27:27,757 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 09:27:27,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 09:27:27,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 09:27:27,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 09:27:27,758 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 09:27:27,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 09:27:27,880 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 09:27:27,888 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 09:27:28,169 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 09:27:28,174 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 09:27:28,175 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 09:27:28,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:27:28 BoogieIcfgContainer [2022-11-20 09:27:28,180 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 09:27:28,182 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 09:27:28,195 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 09:27:28,198 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 09:27:28,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:27:27" (1/3) ... [2022-11-20 09:27:28,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e939614 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:27:28, skipping insertion in model container [2022-11-20 09:27:28,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:27" (2/3) ... [2022-11-20 09:27:28,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e939614 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:27:28, skipping insertion in model container [2022-11-20 09:27:28,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:27:28" (3/3) ... [2022-11-20 09:27:28,201 INFO L112 eAbstractionObserver]: Analyzing ICFG nested_structure-1.i [2022-11-20 09:27:28,235 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 09:27:28,236 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2022-11-20 09:27:28,300 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 09:27:28,308 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;@4e8a399a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 09:27:28,308 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2022-11-20 09:27:28,315 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 15 states have (on average 2.0) internal successors, (30), 29 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:28,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-20 09:27:28,321 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:28,322 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-20 09:27:28,323 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-20 09:27:28,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:28,331 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2022-11-20 09:27:28,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:28,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101316584] [2022-11-20 09:27:28,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:28,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:28,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:28,654 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 09:27:28,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:28,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101316584] [2022-11-20 09:27:28,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101316584] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:28,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:28,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 09:27:28,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964117476] [2022-11-20 09:27:28,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:28,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:27:28,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:28,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:27:28,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:27:28,695 INFO L87 Difference]: Start difference. First operand has 30 states, 15 states have (on average 2.0) internal successors, (30), 29 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) 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 09:27:28,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:28,742 INFO L93 Difference]: Finished difference Result 27 states and 26 transitions. [2022-11-20 09:27:28,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:27:28,744 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 09:27:28,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:28,752 INFO L225 Difference]: With dead ends: 27 [2022-11-20 09:27:28,752 INFO L226 Difference]: Without dead ends: 25 [2022-11-20 09:27:28,754 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 09:27:28,758 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 20 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 14 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 09:27:28,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 14 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:27:28,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-11-20 09:27:28,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-11-20 09:27:28,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 24 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 09:27:28,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 24 transitions. [2022-11-20 09:27:28,791 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 24 transitions. Word has length 3 [2022-11-20 09:27:28,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:28,791 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 24 transitions. [2022-11-20 09:27:28,792 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 09:27:28,792 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 24 transitions. [2022-11-20 09:27:28,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-20 09:27:28,793 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:28,793 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-20 09:27:28,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 09:27:28,794 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-20 09:27:28,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:28,794 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2022-11-20 09:27:28,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:28,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408928301] [2022-11-20 09:27:28,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:28,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:28,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:28,924 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 09:27:28,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:28,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408928301] [2022-11-20 09:27:28,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408928301] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:28,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:28,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 09:27:28,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899075365] [2022-11-20 09:27:28,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:28,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:27:28,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:28,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:27:28,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:27:28,929 INFO L87 Difference]: Start difference. First operand 25 states and 24 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 09:27:28,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:28,964 INFO L93 Difference]: Finished difference Result 23 states and 22 transitions. [2022-11-20 09:27:28,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:27:28,965 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 09:27:28,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:28,966 INFO L225 Difference]: With dead ends: 23 [2022-11-20 09:27:28,966 INFO L226 Difference]: Without dead ends: 23 [2022-11-20 09:27:28,966 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 09:27:28,968 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 18 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:28,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 12 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:27:28,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-20 09:27:28,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-11-20 09:27:28,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 22 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:28,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 22 transitions. [2022-11-20 09:27:28,980 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 22 transitions. Word has length 3 [2022-11-20 09:27:28,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:28,981 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 22 transitions. [2022-11-20 09:27:28,982 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 09:27:28,983 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 22 transitions. [2022-11-20 09:27:28,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-20 09:27:28,986 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:28,987 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-20 09:27:28,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 09:27:28,987 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-20 09:27:28,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:28,994 INFO L85 PathProgramCache]: Analyzing trace with hash 925543, now seen corresponding path program 1 times [2022-11-20 09:27:28,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:28,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392117851] [2022-11-20 09:27:28,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:28,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:29,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:29,198 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 09:27:29,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:29,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392117851] [2022-11-20 09:27:29,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392117851] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:29,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:29,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:27:29,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963106969] [2022-11-20 09:27:29,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:29,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:27:29,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:29,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:27:29,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:27:29,202 INFO L87 Difference]: Start difference. First operand 23 states and 22 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 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 09:27:29,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:29,265 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2022-11-20 09:27:29,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:27:29,266 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 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 09:27:29,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:29,266 INFO L225 Difference]: With dead ends: 22 [2022-11-20 09:27:29,266 INFO L226 Difference]: Without dead ends: 22 [2022-11-20 09:27:29,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:27:29,268 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 10 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:29,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 27 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:27:29,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-11-20 09:27:29,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-11-20 09:27:29,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 21 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:29,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 21 transitions. [2022-11-20 09:27:29,272 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 21 transitions. Word has length 4 [2022-11-20 09:27:29,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:29,272 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 21 transitions. [2022-11-20 09:27:29,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 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 09:27:29,272 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 21 transitions. [2022-11-20 09:27:29,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-20 09:27:29,273 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:29,273 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-20 09:27:29,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 09:27:29,274 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-20 09:27:29,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:29,274 INFO L85 PathProgramCache]: Analyzing trace with hash 925544, now seen corresponding path program 1 times [2022-11-20 09:27:29,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:29,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600657557] [2022-11-20 09:27:29,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:29,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:29,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:29,440 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 09:27:29,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:29,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600657557] [2022-11-20 09:27:29,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600657557] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:29,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:29,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:27:29,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065426893] [2022-11-20 09:27:29,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:29,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:27:29,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:29,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:27:29,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:27:29,443 INFO L87 Difference]: Start difference. First operand 22 states and 21 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 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 09:27:29,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:29,526 INFO L93 Difference]: Finished difference Result 21 states and 20 transitions. [2022-11-20 09:27:29,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:27:29,526 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 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 09:27:29,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:29,527 INFO L225 Difference]: With dead ends: 21 [2022-11-20 09:27:29,527 INFO L226 Difference]: Without dead ends: 21 [2022-11-20 09:27:29,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:27:29,529 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 8 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:29,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 30 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 09:27:29,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-20 09:27:29,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-11-20 09:27:29,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 20 states have internal predecessors, (20), 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 09:27:29,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 20 transitions. [2022-11-20 09:27:29,536 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 20 transitions. Word has length 4 [2022-11-20 09:27:29,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:29,537 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 20 transitions. [2022-11-20 09:27:29,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 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 09:27:29,539 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 20 transitions. [2022-11-20 09:27:29,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 09:27:29,540 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:29,540 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 09:27:29,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 09:27:29,540 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-20 09:27:29,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:29,541 INFO L85 PathProgramCache]: Analyzing trace with hash 28691812, now seen corresponding path program 1 times [2022-11-20 09:27:29,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:29,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789351140] [2022-11-20 09:27:29,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:29,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:29,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:29,938 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 09:27:29,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:29,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789351140] [2022-11-20 09:27:29,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789351140] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:29,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:29,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 09:27:29,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010595653] [2022-11-20 09:27:29,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:29,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 09:27:29,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:29,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:27:29,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:27:29,941 INFO L87 Difference]: Start difference. First operand 21 states and 20 transitions. Second operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 5 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 09:27:30,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:30,109 INFO L93 Difference]: Finished difference Result 20 states and 19 transitions. [2022-11-20 09:27:30,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 09:27:30,110 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 5 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 09:27:30,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:30,111 INFO L225 Difference]: With dead ends: 20 [2022-11-20 09:27:30,111 INFO L226 Difference]: Without dead ends: 20 [2022-11-20 09:27:30,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:27:30,118 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 7 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:30,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 31 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 09:27:30,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-20 09:27:30,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-11-20 09:27:30,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 19 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:30,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 19 transitions. [2022-11-20 09:27:30,131 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 19 transitions. Word has length 5 [2022-11-20 09:27:30,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:30,133 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 19 transitions. [2022-11-20 09:27:30,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 5 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 09:27:30,134 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 19 transitions. [2022-11-20 09:27:30,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 09:27:30,134 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:30,135 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 09:27:30,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 09:27:30,136 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-20 09:27:30,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:30,141 INFO L85 PathProgramCache]: Analyzing trace with hash 28691813, now seen corresponding path program 1 times [2022-11-20 09:27:30,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:30,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493735321] [2022-11-20 09:27:30,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:30,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:30,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:30,425 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 09:27:30,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:30,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493735321] [2022-11-20 09:27:30,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493735321] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:30,426 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:30,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 09:27:30,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998412360] [2022-11-20 09:27:30,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:30,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 09:27:30,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:30,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:27:30,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:27:30,429 INFO L87 Difference]: Start difference. First operand 20 states and 19 transitions. Second operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 5 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 09:27:30,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:30,535 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2022-11-20 09:27:30,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 09:27:30,535 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 5 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 09:27:30,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:30,536 INFO L225 Difference]: With dead ends: 19 [2022-11-20 09:27:30,536 INFO L226 Difference]: Without dead ends: 19 [2022-11-20 09:27:30,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 09:27:30,538 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 4 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:30,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 36 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:27:30,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-11-20 09:27:30,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-11-20 09:27:30,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 18 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:30,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 18 transitions. [2022-11-20 09:27:30,541 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 18 transitions. Word has length 5 [2022-11-20 09:27:30,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:30,542 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 18 transitions. [2022-11-20 09:27:30,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 5 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 09:27:30,542 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 18 transitions. [2022-11-20 09:27:30,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 09:27:30,543 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:30,543 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:30,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 09:27:30,543 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-20 09:27:30,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:30,544 INFO L85 PathProgramCache]: Analyzing trace with hash 59261549, now seen corresponding path program 1 times [2022-11-20 09:27:30,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:30,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510500167] [2022-11-20 09:27:30,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:30,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:30,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:30,733 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 09:27:30,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:30,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510500167] [2022-11-20 09:27:30,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510500167] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:30,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:30,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 09:27:30,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835357619] [2022-11-20 09:27:30,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:30,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 09:27:30,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:30,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 09:27:30,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:27:30,736 INFO L87 Difference]: Start difference. First operand 19 states and 18 transitions. Second operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:30,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:30,849 INFO L93 Difference]: Finished difference Result 18 states and 17 transitions. [2022-11-20 09:27:30,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 09:27:30,850 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-20 09:27:30,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:30,850 INFO L225 Difference]: With dead ends: 18 [2022-11-20 09:27:30,851 INFO L226 Difference]: Without dead ends: 18 [2022-11-20 09:27:30,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-11-20 09:27:30,852 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 22 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:30,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 26 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:27:30,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-11-20 09:27:30,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-11-20 09:27:30,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 17 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:30,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 17 transitions. [2022-11-20 09:27:30,855 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 17 transitions. Word has length 8 [2022-11-20 09:27:30,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:30,856 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 17 transitions. [2022-11-20 09:27:30,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:30,856 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 17 transitions. [2022-11-20 09:27:30,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 09:27:30,857 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:30,857 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:30,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 09:27:30,857 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-20 09:27:30,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:30,858 INFO L85 PathProgramCache]: Analyzing trace with hash 59261550, now seen corresponding path program 1 times [2022-11-20 09:27:30,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:30,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899260423] [2022-11-20 09:27:30,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:30,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:30,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:31,380 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 09:27:31,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:31,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899260423] [2022-11-20 09:27:31,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899260423] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:31,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:31,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 09:27:31,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680031165] [2022-11-20 09:27:31,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:31,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 09:27:31,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:31,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 09:27:31,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:27:31,384 INFO L87 Difference]: Start difference. First operand 18 states and 17 transitions. Second operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:31,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:31,503 INFO L93 Difference]: Finished difference Result 17 states and 16 transitions. [2022-11-20 09:27:31,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 09:27:31,504 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-20 09:27:31,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:31,505 INFO L225 Difference]: With dead ends: 17 [2022-11-20 09:27:31,505 INFO L226 Difference]: Without dead ends: 17 [2022-11-20 09:27:31,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-11-20 09:27:31,507 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 19 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:31,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 24 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:27:31,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-20 09:27:31,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-11-20 09:27:31,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 16 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:31,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 16 transitions. [2022-11-20 09:27:31,517 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 16 transitions. Word has length 8 [2022-11-20 09:27:31,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:31,517 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 16 transitions. [2022-11-20 09:27:31,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:31,518 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 16 transitions. [2022-11-20 09:27:31,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 09:27:31,519 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:31,520 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:31,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 09:27:31,521 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-20 09:27:31,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:31,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1837108008, now seen corresponding path program 1 times [2022-11-20 09:27:31,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:31,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893958071] [2022-11-20 09:27:31,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:31,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:31,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:31,902 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 09:27:31,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:31,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893958071] [2022-11-20 09:27:31,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893958071] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:31,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:31,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 09:27:31,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366428580] [2022-11-20 09:27:31,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:31,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 09:27:31,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:31,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 09:27:31,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-20 09:27:31,906 INFO L87 Difference]: Start difference. First operand 17 states and 16 transitions. Second operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 8 states have internal predecessors, (9), 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 09:27:32,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:32,131 INFO L93 Difference]: Finished difference Result 16 states and 15 transitions. [2022-11-20 09:27:32,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 09:27:32,132 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 8 states have internal predecessors, (9), 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 9 [2022-11-20 09:27:32,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:32,133 INFO L225 Difference]: With dead ends: 16 [2022-11-20 09:27:32,133 INFO L226 Difference]: Without dead ends: 16 [2022-11-20 09:27:32,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2022-11-20 09:27:32,134 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 30 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:32,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 21 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 09:27:32,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-11-20 09:27:32,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-11-20 09:27:32,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 15 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:32,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2022-11-20 09:27:32,137 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 9 [2022-11-20 09:27:32,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:32,137 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2022-11-20 09:27:32,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 8 states have internal predecessors, (9), 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 09:27:32,137 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2022-11-20 09:27:32,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 09:27:32,138 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:32,138 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:32,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 09:27:32,138 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-20 09:27:32,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:32,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1837108009, now seen corresponding path program 1 times [2022-11-20 09:27:32,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:32,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005159290] [2022-11-20 09:27:32,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:32,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:32,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:32,645 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 09:27:32,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:32,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005159290] [2022-11-20 09:27:32,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005159290] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:32,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:32,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 09:27:32,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823428709] [2022-11-20 09:27:32,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:32,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 09:27:32,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:32,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 09:27:32,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-20 09:27:32,648 INFO L87 Difference]: Start difference. First operand 16 states and 15 transitions. Second operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 8 states have internal predecessors, (9), 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 09:27:32,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:32,813 INFO L93 Difference]: Finished difference Result 15 states and 14 transitions. [2022-11-20 09:27:32,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 09:27:32,814 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 8 states have internal predecessors, (9), 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 9 [2022-11-20 09:27:32,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:32,815 INFO L225 Difference]: With dead ends: 15 [2022-11-20 09:27:32,815 INFO L226 Difference]: Without dead ends: 15 [2022-11-20 09:27:32,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-20 09:27:32,816 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 27 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:32,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 18 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:27:32,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-11-20 09:27:32,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-11-20 09:27:32,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 14 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 09:27:32,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2022-11-20 09:27:32,819 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 9 [2022-11-20 09:27:32,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:32,819 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2022-11-20 09:27:32,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 8 states have internal predecessors, (9), 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 09:27:32,819 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2022-11-20 09:27:32,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 09:27:32,820 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:32,820 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:32,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 09:27:32,820 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-20 09:27:32,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:32,821 INFO L85 PathProgramCache]: Analyzing trace with hash 229236905, now seen corresponding path program 1 times [2022-11-20 09:27:32,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:32,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674285902] [2022-11-20 09:27:32,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:32,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:32,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:33,329 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 09:27:33,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:33,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674285902] [2022-11-20 09:27:33,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674285902] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:33,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:33,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 09:27:33,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100522515] [2022-11-20 09:27:33,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:33,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 09:27:33,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:33,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 09:27:33,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-20 09:27:33,331 INFO L87 Difference]: Start difference. First operand 15 states and 14 transitions. Second operand has 9 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:33,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:33,548 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2022-11-20 09:27:33,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 09:27:33,548 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-20 09:27:33,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:33,549 INFO L225 Difference]: With dead ends: 13 [2022-11-20 09:27:33,549 INFO L226 Difference]: Without dead ends: 13 [2022-11-20 09:27:33,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2022-11-20 09:27:33,550 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 17 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:33,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 18 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 09:27:33,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-11-20 09:27:33,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-11-20 09:27:33,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.0) internal successors, (12), 12 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:33,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 12 transitions. [2022-11-20 09:27:33,552 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 12 transitions. Word has length 11 [2022-11-20 09:27:33,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:33,552 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 12 transitions. [2022-11-20 09:27:33,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:33,552 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2022-11-20 09:27:33,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 09:27:33,553 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:33,553 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:33,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 09:27:33,553 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-20 09:27:33,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:33,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1483592269, now seen corresponding path program 1 times [2022-11-20 09:27:33,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:33,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651171436] [2022-11-20 09:27:33,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:33,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:33,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:33,798 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 09:27:33,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:33,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651171436] [2022-11-20 09:27:33,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651171436] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:33,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:33,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:27:33,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629427669] [2022-11-20 09:27:33,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:33,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:27:33,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:33,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:27:33,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:27:33,801 INFO L87 Difference]: Start difference. First operand 13 states and 12 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:33,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:33,824 INFO L93 Difference]: Finished difference Result 12 states and 11 transitions. [2022-11-20 09:27:33,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 09:27:33,825 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-20 09:27:33,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:33,825 INFO L225 Difference]: With dead ends: 12 [2022-11-20 09:27:33,825 INFO L226 Difference]: Without dead ends: 0 [2022-11-20 09:27:33,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:27:33,826 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:33,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:27:33,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-20 09:27:33,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-20 09:27:33,828 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 09:27:33,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-20 09:27:33,828 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2022-11-20 09:27:33,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:33,828 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 09:27:33,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:33,828 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-20 09:27:33,828 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-20 09:27:33,831 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 14 remaining) [2022-11-20 09:27:33,832 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 14 remaining) [2022-11-20 09:27:33,832 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 14 remaining) [2022-11-20 09:27:33,832 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 14 remaining) [2022-11-20 09:27:33,832 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 14 remaining) [2022-11-20 09:27:33,832 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 14 remaining) [2022-11-20 09:27:33,832 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 14 remaining) [2022-11-20 09:27:33,833 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 14 remaining) [2022-11-20 09:27:33,833 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 14 remaining) [2022-11-20 09:27:33,833 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 14 remaining) [2022-11-20 09:27:33,833 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 14 remaining) [2022-11-20 09:27:33,833 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 14 remaining) [2022-11-20 09:27:33,834 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (1 of 14 remaining) [2022-11-20 09:27:33,834 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK (0 of 14 remaining) [2022-11-20 09:27:33,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 09:27:33,837 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:33,840 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 09:27:33,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 09:27:33 BoogieIcfgContainer [2022-11-20 09:27:33,842 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 09:27:33,843 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 09:27:33,843 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 09:27:33,843 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 09:27:33,844 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:27:28" (3/4) ... [2022-11-20 09:27:33,847 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 09:27:33,857 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2022-11-20 09:27:33,858 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-20 09:27:33,858 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-20 09:27:33,858 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 09:27:33,896 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08caebe-85c4-4c65-bf93-9f96fe5151a6/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 09:27:33,896 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 09:27:33,897 INFO L158 Benchmark]: Toolchain (without parser) took 6670.70ms. Allocated memory was 123.7MB in the beginning and 180.4MB in the end (delta: 56.6MB). Free memory was 56.5MB in the beginning and 137.0MB in the end (delta: -80.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 09:27:33,897 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 123.7MB. Free memory was 96.0MB in the beginning and 95.8MB in the end (delta: 188.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 09:27:33,897 INFO L158 Benchmark]: CACSL2BoogieTranslator took 267.17ms. Allocated memory is still 123.7MB. Free memory was 56.3MB in the beginning and 45.9MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 09:27:33,898 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.06ms. Allocated memory is still 123.7MB. Free memory was 45.9MB in the beginning and 44.3MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 09:27:33,898 INFO L158 Benchmark]: Boogie Preprocessor took 48.27ms. Allocated memory is still 123.7MB. Free memory was 44.3MB in the beginning and 43.3MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 09:27:33,899 INFO L158 Benchmark]: RCFGBuilder took 583.83ms. Allocated memory was 123.7MB in the beginning and 148.9MB in the end (delta: 25.2MB). Free memory was 43.1MB in the beginning and 113.3MB in the end (delta: -70.2MB). Peak memory consumption was 12.1MB. Max. memory is 16.1GB. [2022-11-20 09:27:33,899 INFO L158 Benchmark]: TraceAbstraction took 5660.40ms. Allocated memory was 148.9MB in the beginning and 180.4MB in the end (delta: 31.5MB). Free memory was 112.6MB in the beginning and 140.1MB in the end (delta: -27.5MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. [2022-11-20 09:27:33,900 INFO L158 Benchmark]: Witness Printer took 53.17ms. Allocated memory is still 180.4MB. Free memory was 140.1MB in the beginning and 137.0MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-20 09:27:33,902 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 123.7MB. Free memory was 96.0MB in the beginning and 95.8MB in the end (delta: 188.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 267.17ms. Allocated memory is still 123.7MB. Free memory was 56.3MB in the beginning and 45.9MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.06ms. Allocated memory is still 123.7MB. Free memory was 45.9MB in the beginning and 44.3MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 48.27ms. Allocated memory is still 123.7MB. Free memory was 44.3MB in the beginning and 43.3MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 583.83ms. Allocated memory was 123.7MB in the beginning and 148.9MB in the end (delta: 25.2MB). Free memory was 43.1MB in the beginning and 113.3MB in the end (delta: -70.2MB). Peak memory consumption was 12.1MB. Max. memory is 16.1GB. * TraceAbstraction took 5660.40ms. Allocated memory was 148.9MB in the beginning and 180.4MB in the end (delta: 31.5MB). Free memory was 112.6MB in the beginning and 140.1MB in the end (delta: -27.5MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. * Witness Printer took 53.17ms. Allocated memory is still 180.4MB. Free memory was 140.1MB in the beginning and 137.0MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: -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: 11]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 26]: 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, 30 locations, 14 error locations. Started 1 CEGAR loops. OverallTime: 5.6s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 182 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 182 mSDsluCounter, 263 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 139 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 362 IncrementalHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 124 mSDtfsCounter, 362 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 85 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=0, InterpolantAutomatonStates: 74, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 81 NumberOfCodeBlocks, 81 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 69 ConstructedInterpolants, 0 QuantifiedInterpolants, 1505 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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 14 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-20 09:27:33,932 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08caebe-85c4-4c65-bf93-9f96fe5151a6/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