./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/termination-crafted/LexIndexValue-Pointer-2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5af98b-2b84-4428-a6e9-3a4f8453f657/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5af98b-2b84-4428-a6e9-3a4f8453f657/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5af98b-2b84-4428-a6e9-3a4f8453f657/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5af98b-2b84-4428-a6e9-3a4f8453f657/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-crafted/LexIndexValue-Pointer-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5af98b-2b84-4428-a6e9-3a4f8453f657/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5af98b-2b84-4428-a6e9-3a4f8453f657/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 1bedc761cea545b8144ad4138a379d7139cc98703c76e9b536a2e7389d5b6a10 --- 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-2329fc7 [2022-12-13 11:08:10,217 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 11:08:10,219 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 11:08:10,236 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 11:08:10,236 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 11:08:10,237 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 11:08:10,238 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 11:08:10,239 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 11:08:10,241 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 11:08:10,241 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 11:08:10,242 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 11:08:10,243 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 11:08:10,244 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 11:08:10,244 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 11:08:10,245 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 11:08:10,246 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 11:08:10,247 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 11:08:10,248 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 11:08:10,249 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 11:08:10,251 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 11:08:10,252 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 11:08:10,253 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 11:08:10,254 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 11:08:10,255 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 11:08:10,258 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 11:08:10,258 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 11:08:10,258 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 11:08:10,259 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 11:08:10,260 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 11:08:10,260 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 11:08:10,261 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 11:08:10,261 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 11:08:10,262 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 11:08:10,263 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 11:08:10,263 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 11:08:10,264 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 11:08:10,264 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 11:08:10,264 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 11:08:10,265 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 11:08:10,265 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 11:08:10,266 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 11:08:10,267 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5af98b-2b84-4428-a6e9-3a4f8453f657/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2022-12-13 11:08:10,286 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 11:08:10,287 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 11:08:10,287 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 11:08:10,287 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 11:08:10,288 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 11:08:10,288 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 11:08:10,288 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 11:08:10,288 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 11:08:10,289 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 11:08:10,289 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 11:08:10,289 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 11:08:10,289 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 11:08:10,289 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 11:08:10,289 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 11:08:10,290 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 11:08:10,290 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 11:08:10,290 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 11:08:10,290 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 11:08:10,290 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 11:08:10,290 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 11:08:10,291 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 11:08:10,291 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 11:08:10,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:08:10,291 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 11:08:10,291 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 11:08:10,291 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 11:08:10,292 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 11:08:10,292 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 11:08:10,292 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 11:08:10,292 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 11:08:10,292 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 11:08:10,292 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_7c5af98b-2b84-4428-a6e9-3a4f8453f657/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5af98b-2b84-4428-a6e9-3a4f8453f657/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1bedc761cea545b8144ad4138a379d7139cc98703c76e9b536a2e7389d5b6a10 [2022-12-13 11:08:10,473 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 11:08:10,492 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 11:08:10,494 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 11:08:10,494 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 11:08:10,495 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 11:08:10,496 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5af98b-2b84-4428-a6e9-3a4f8453f657/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/termination-crafted/LexIndexValue-Pointer-2.c [2022-12-13 11:08:12,977 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 11:08:13,114 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 11:08:13,115 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5af98b-2b84-4428-a6e9-3a4f8453f657/sv-benchmarks/c/termination-crafted/LexIndexValue-Pointer-2.c [2022-12-13 11:08:13,120 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5af98b-2b84-4428-a6e9-3a4f8453f657/bin/uautomizer-uyxdKDjOR8/data/4341002ed/b12b71367dbb42388efc96642e41b3d8/FLAGc6ef66c68 [2022-12-13 11:08:13,131 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5af98b-2b84-4428-a6e9-3a4f8453f657/bin/uautomizer-uyxdKDjOR8/data/4341002ed/b12b71367dbb42388efc96642e41b3d8 [2022-12-13 11:08:13,133 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 11:08:13,134 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 11:08:13,135 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 11:08:13,135 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 11:08:13,138 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 11:08:13,138 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:08:13" (1/1) ... [2022-12-13 11:08:13,139 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34bba9ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:08:13, skipping insertion in model container [2022-12-13 11:08:13,139 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:08:13" (1/1) ... [2022-12-13 11:08:13,145 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 11:08:13,155 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 11:08:13,275 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:08:13,282 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 11:08:13,291 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:08:13,301 INFO L208 MainTranslator]: Completed translation [2022-12-13 11:08:13,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:08:13 WrapperNode [2022-12-13 11:08:13,302 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 11:08:13,302 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 11:08:13,302 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 11:08:13,302 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 11:08:13,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:08:13" (1/1) ... [2022-12-13 11:08:13,313 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:08:13" (1/1) ... [2022-12-13 11:08:13,330 INFO L138 Inliner]: procedures = 10, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 51 [2022-12-13 11:08:13,331 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 11:08:13,332 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 11:08:13,332 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 11:08:13,332 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 11:08:13,341 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:08:13" (1/1) ... [2022-12-13 11:08:13,341 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:08:13" (1/1) ... [2022-12-13 11:08:13,343 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:08:13" (1/1) ... [2022-12-13 11:08:13,343 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:08:13" (1/1) ... [2022-12-13 11:08:13,348 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:08:13" (1/1) ... [2022-12-13 11:08:13,351 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:08:13" (1/1) ... [2022-12-13 11:08:13,352 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:08:13" (1/1) ... [2022-12-13 11:08:13,353 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:08:13" (1/1) ... [2022-12-13 11:08:13,354 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 11:08:13,355 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 11:08:13,355 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 11:08:13,355 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 11:08:13,356 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:08:13" (1/1) ... [2022-12-13 11:08:13,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:08:13,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5af98b-2b84-4428-a6e9-3a4f8453f657/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:08:13,384 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5af98b-2b84-4428-a6e9-3a4f8453f657/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 11:08:13,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5af98b-2b84-4428-a6e9-3a4f8453f657/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 11:08:13,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 11:08:13,428 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 11:08:13,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 11:08:13,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 11:08:13,429 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 11:08:13,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 11:08:13,492 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 11:08:13,495 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 11:08:13,628 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 11:08:13,635 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 11:08:13,635 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 11:08:13,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:08:13 BoogieIcfgContainer [2022-12-13 11:08:13,638 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 11:08:13,640 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 11:08:13,640 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 11:08:13,643 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 11:08:13,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 11:08:13" (1/3) ... [2022-12-13 11:08:13,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15d4f7c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:08:13, skipping insertion in model container [2022-12-13 11:08:13,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:08:13" (2/3) ... [2022-12-13 11:08:13,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15d4f7c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:08:13, skipping insertion in model container [2022-12-13 11:08:13,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:08:13" (3/3) ... [2022-12-13 11:08:13,646 INFO L112 eAbstractionObserver]: Analyzing ICFG LexIndexValue-Pointer-2.c [2022-12-13 11:08:13,665 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 11:08:13,666 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-12-13 11:08:13,712 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 11:08:13,719 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=PETRI_NET, 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;@33f3f183, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 11:08:13,720 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-12-13 11:08:13,724 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 34 states have internal predecessors, (40), 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) [2022-12-13 11:08:13,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-13 11:08:13,730 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:08:13,731 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-13 11:08:13,731 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 11:08:13,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:08:13,737 INFO L85 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2022-12-13 11:08:13,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:08:13,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649382372] [2022-12-13 11:08:13,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:08:13,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:08:13,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:08:13,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:08:13,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:08:13,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649382372] [2022-12-13 11:08:13,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649382372] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:08:13,919 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:08:13,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:08:13,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070886718] [2022-12-13 11:08:13,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:08:13,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:08:13,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:08:13,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:08:13,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:08:13,956 INFO L87 Difference]: Start difference. First operand has 35 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 34 states have internal predecessors, (40), 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 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:08:14,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:08:14,020 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2022-12-13 11:08:14,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:08:14,023 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-12-13 11:08:14,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:08:14,030 INFO L225 Difference]: With dead ends: 47 [2022-12-13 11:08:14,030 INFO L226 Difference]: Without dead ends: 45 [2022-12-13 11:08:14,032 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 [2022-12-13 11:08:14,035 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 23 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:08:14,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 51 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 11:08:14,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-12-13 11:08:14,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 37. [2022-12-13 11:08:14,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 27 states have (on average 1.6666666666666667) internal successors, (45), 36 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:08:14,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2022-12-13 11:08:14,074 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 4 [2022-12-13 11:08:14,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:08:14,074 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2022-12-13 11:08:14,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:08:14,074 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2022-12-13 11:08:14,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-13 11:08:14,075 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:08:14,075 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-13 11:08:14,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 11:08:14,075 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 11:08:14,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:08:14,076 INFO L85 PathProgramCache]: Analyzing trace with hash 925766, now seen corresponding path program 1 times [2022-12-13 11:08:14,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:08:14,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542284405] [2022-12-13 11:08:14,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:08:14,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:08:14,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:08:14,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:08:14,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:08:14,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542284405] [2022-12-13 11:08:14,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542284405] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:08:14,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:08:14,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:08:14,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28012360] [2022-12-13 11:08:14,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:08:14,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:08:14,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:08:14,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:08:14,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:08:14,189 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:08:14,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:08:14,221 INFO L93 Difference]: Finished difference Result 41 states and 49 transitions. [2022-12-13 11:08:14,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:08:14,221 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-12-13 11:08:14,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:08:14,222 INFO L225 Difference]: With dead ends: 41 [2022-12-13 11:08:14,222 INFO L226 Difference]: Without dead ends: 41 [2022-12-13 11:08:14,222 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 [2022-12-13 11:08:14,224 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 2 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:08:14,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 48 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 11:08:14,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-12-13 11:08:14,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2022-12-13 11:08:14,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 29 states have (on average 1.6206896551724137) internal successors, (47), 38 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:08:14,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2022-12-13 11:08:14,229 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 4 [2022-12-13 11:08:14,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:08:14,229 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2022-12-13 11:08:14,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:08:14,229 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2022-12-13 11:08:14,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-13 11:08:14,230 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:08:14,230 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-12-13 11:08:14,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 11:08:14,231 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 11:08:14,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:08:14,231 INFO L85 PathProgramCache]: Analyzing trace with hash 264435913, now seen corresponding path program 1 times [2022-12-13 11:08:14,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:08:14,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729656485] [2022-12-13 11:08:14,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:08:14,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:08:14,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:08:14,373 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:08:14,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:08:14,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729656485] [2022-12-13 11:08:14,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729656485] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:08:14,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871084624] [2022-12-13 11:08:14,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:08:14,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:08:14,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5af98b-2b84-4428-a6e9-3a4f8453f657/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:08:14,376 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5af98b-2b84-4428-a6e9-3a4f8453f657/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:08:14,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5af98b-2b84-4428-a6e9-3a4f8453f657/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 11:08:14,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:08:14,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 11:08:14,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:08:14,496 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 11:08:14,553 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:08:14,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:08:14,620 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:08:14,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1871084624] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:08:14,621 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:08:14,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2022-12-13 11:08:14,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300951310] [2022-12-13 11:08:14,621 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:08:14,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 11:08:14,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:08:14,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 11:08:14,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-12-13 11:08:14,623 INFO L87 Difference]: Start difference. First operand 39 states and 47 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 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) [2022-12-13 11:08:14,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:08:14,732 INFO L93 Difference]: Finished difference Result 49 states and 57 transitions. [2022-12-13 11:08:14,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 11:08:14,733 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 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) Word has length 8 [2022-12-13 11:08:14,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:08:14,734 INFO L225 Difference]: With dead ends: 49 [2022-12-13 11:08:14,734 INFO L226 Difference]: Without dead ends: 49 [2022-12-13 11:08:14,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-12-13 11:08:14,735 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 21 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:08:14,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 100 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 11:08:14,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-12-13 11:08:14,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2022-12-13 11:08:14,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 40 states have (on average 1.425) internal successors, (57), 48 states have internal predecessors, (57), 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) [2022-12-13 11:08:14,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2022-12-13 11:08:14,739 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 8 [2022-12-13 11:08:14,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:08:14,739 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2022-12-13 11:08:14,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 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) [2022-12-13 11:08:14,739 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2022-12-13 11:08:14,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-12-13 11:08:14,740 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:08:14,740 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:08:14,746 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5af98b-2b84-4428-a6e9-3a4f8453f657/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 11:08:14,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5af98b-2b84-4428-a6e9-3a4f8453f657/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:08:14,943 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 11:08:14,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:08:14,944 INFO L85 PathProgramCache]: Analyzing trace with hash 868179552, now seen corresponding path program 1 times [2022-12-13 11:08:14,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:08:14,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129458780] [2022-12-13 11:08:14,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:08:14,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:08:14,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:08:15,142 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 11:08:15,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:08:15,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129458780] [2022-12-13 11:08:15,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129458780] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:08:15,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580480578] [2022-12-13 11:08:15,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:08:15,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:08:15,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5af98b-2b84-4428-a6e9-3a4f8453f657/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:08:15,144 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5af98b-2b84-4428-a6e9-3a4f8453f657/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:08:15,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5af98b-2b84-4428-a6e9-3a4f8453f657/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 11:08:15,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:08:15,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 11:08:15,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:08:15,241 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:08:15,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:08:15,308 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:08:15,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580480578] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:08:15,308 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:08:15,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 16 [2022-12-13 11:08:15,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774234777] [2022-12-13 11:08:15,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:08:15,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 11:08:15,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:08:15,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 11:08:15,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2022-12-13 11:08:15,311 INFO L87 Difference]: Start difference. First operand 49 states and 57 transitions. Second operand has 16 states, 16 states have (on average 3.5) internal successors, (56), 16 states have internal predecessors, (56), 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) [2022-12-13 11:08:15,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:08:15,473 INFO L93 Difference]: Finished difference Result 70 states and 78 transitions. [2022-12-13 11:08:15,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 11:08:15,473 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.5) internal successors, (56), 16 states have internal predecessors, (56), 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 23 [2022-12-13 11:08:15,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:08:15,474 INFO L225 Difference]: With dead ends: 70 [2022-12-13 11:08:15,474 INFO L226 Difference]: Without dead ends: 70 [2022-12-13 11:08:15,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=237, Invalid=413, Unknown=0, NotChecked=0, Total=650 [2022-12-13 11:08:15,476 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 66 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:08:15,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 73 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 11:08:15,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-12-13 11:08:15,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 64. [2022-12-13 11:08:15,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 58 states have (on average 1.1551724137931034) internal successors, (67), 63 states have internal predecessors, (67), 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) [2022-12-13 11:08:15,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 67 transitions. [2022-12-13 11:08:15,482 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 67 transitions. Word has length 23 [2022-12-13 11:08:15,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:08:15,482 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 67 transitions. [2022-12-13 11:08:15,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.5) internal successors, (56), 16 states have internal predecessors, (56), 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) [2022-12-13 11:08:15,483 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 67 transitions. [2022-12-13 11:08:15,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-12-13 11:08:15,483 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:08:15,484 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:08:15,487 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5af98b-2b84-4428-a6e9-3a4f8453f657/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 11:08:15,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5af98b-2b84-4428-a6e9-3a4f8453f657/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-12-13 11:08:15,685 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 11:08:15,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:08:15,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1707912335, now seen corresponding path program 1 times [2022-12-13 11:08:15,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:08:15,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109789090] [2022-12-13 11:08:15,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:08:15,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:08:15,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:08:15,934 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:08:15,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:08:15,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109789090] [2022-12-13 11:08:15,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109789090] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:08:15,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942550887] [2022-12-13 11:08:15,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:08:15,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:08:15,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5af98b-2b84-4428-a6e9-3a4f8453f657/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:08:15,935 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5af98b-2b84-4428-a6e9-3a4f8453f657/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:08:15,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5af98b-2b84-4428-a6e9-3a4f8453f657/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 11:08:15,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:08:15,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 11:08:15,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:08:16,053 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:08:16,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:08:16,228 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:08:16,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942550887] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:08:16,229 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:08:16,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2022-12-13 11:08:16,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135098672] [2022-12-13 11:08:16,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:08:16,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-13 11:08:16,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:08:16,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-13 11:08:16,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2022-12-13 11:08:16,232 INFO L87 Difference]: Start difference. First operand 64 states and 67 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 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) [2022-12-13 11:08:16,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:08:16,320 INFO L93 Difference]: Finished difference Result 112 states and 115 transitions. [2022-12-13 11:08:16,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-13 11:08:16,321 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 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 47 [2022-12-13 11:08:16,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:08:16,321 INFO L225 Difference]: With dead ends: 112 [2022-12-13 11:08:16,321 INFO L226 Difference]: Without dead ends: 112 [2022-12-13 11:08:16,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2022-12-13 11:08:16,322 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 6 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:08:16,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 145 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 11:08:16,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-12-13 11:08:16,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2022-12-13 11:08:16,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 106 states have (on average 1.0849056603773586) internal successors, (115), 111 states have internal predecessors, (115), 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) [2022-12-13 11:08:16,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 115 transitions. [2022-12-13 11:08:16,328 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 115 transitions. Word has length 47 [2022-12-13 11:08:16,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:08:16,328 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 115 transitions. [2022-12-13 11:08:16,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 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) [2022-12-13 11:08:16,329 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 115 transitions. [2022-12-13 11:08:16,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-12-13 11:08:16,330 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:08:16,330 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:08:16,334 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5af98b-2b84-4428-a6e9-3a4f8453f657/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 11:08:16,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5af98b-2b84-4428-a6e9-3a4f8453f657/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:08:16,532 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 11:08:16,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:08:16,533 INFO L85 PathProgramCache]: Analyzing trace with hash -726611221, now seen corresponding path program 2 times [2022-12-13 11:08:16,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:08:16,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246974747] [2022-12-13 11:08:16,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:08:16,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:08:16,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:08:17,113 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:08:17,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:08:17,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246974747] [2022-12-13 11:08:17,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246974747] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:08:17,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41657159] [2022-12-13 11:08:17,114 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 11:08:17,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:08:17,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5af98b-2b84-4428-a6e9-3a4f8453f657/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:08:17,115 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5af98b-2b84-4428-a6e9-3a4f8453f657/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:08:17,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5af98b-2b84-4428-a6e9-3a4f8453f657/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 11:08:17,166 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 11:08:17,167 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:08:17,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 11:08:17,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:08:17,179 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 11:08:17,475 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2022-12-13 11:08:17,476 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:08:17,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41657159] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:08:17,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 11:08:17,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [25] total 27 [2022-12-13 11:08:17,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794556948] [2022-12-13 11:08:17,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:08:17,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:08:17,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:08:17,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:08:17,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=304, Invalid=398, Unknown=0, NotChecked=0, Total=702 [2022-12-13 11:08:17,478 INFO L87 Difference]: Start difference. First operand 112 states and 115 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 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) [2022-12-13 11:08:17,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:08:17,525 INFO L93 Difference]: Finished difference Result 127 states and 132 transitions. [2022-12-13 11:08:17,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:08:17,525 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 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 95 [2022-12-13 11:08:17,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:08:17,526 INFO L225 Difference]: With dead ends: 127 [2022-12-13 11:08:17,526 INFO L226 Difference]: Without dead ends: 127 [2022-12-13 11:08:17,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=308, Invalid=448, Unknown=0, NotChecked=0, Total=756 [2022-12-13 11:08:17,527 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 60 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:08:17,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 26 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 11:08:17,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-12-13 11:08:17,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 121. [2022-12-13 11:08:17,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 116 states have (on average 1.0948275862068966) internal successors, (127), 120 states have internal predecessors, (127), 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) [2022-12-13 11:08:17,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 127 transitions. [2022-12-13 11:08:17,531 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 127 transitions. Word has length 95 [2022-12-13 11:08:17,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:08:17,532 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 127 transitions. [2022-12-13 11:08:17,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 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) [2022-12-13 11:08:17,532 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 127 transitions. [2022-12-13 11:08:17,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-12-13 11:08:17,533 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:08:17,533 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:08:17,538 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5af98b-2b84-4428-a6e9-3a4f8453f657/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 11:08:17,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5af98b-2b84-4428-a6e9-3a4f8453f657/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-13 11:08:17,734 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 11:08:17,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:08:17,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1806473229, now seen corresponding path program 1 times [2022-12-13 11:08:17,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:08:17,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185194077] [2022-12-13 11:08:17,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:08:17,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:08:17,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:08:17,816 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2022-12-13 11:08:17,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:08:17,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185194077] [2022-12-13 11:08:17,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185194077] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:08:17,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:08:17,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:08:17,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134296871] [2022-12-13 11:08:17,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:08:17,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:08:17,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:08:17,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:08:17,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:08:17,819 INFO L87 Difference]: Start difference. First operand 121 states and 127 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:08:17,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:08:17,826 INFO L93 Difference]: Finished difference Result 120 states and 126 transitions. [2022-12-13 11:08:17,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:08:17,827 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2022-12-13 11:08:17,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:08:17,828 INFO L225 Difference]: With dead ends: 120 [2022-12-13 11:08:17,829 INFO L226 Difference]: Without dead ends: 120 [2022-12-13 11:08:17,829 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 [2022-12-13 11:08:17,830 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 16 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:08:17,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 24 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 11:08:17,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-12-13 11:08:17,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2022-12-13 11:08:17,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 116 states have (on average 1.0862068965517242) internal successors, (126), 119 states have internal predecessors, (126), 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) [2022-12-13 11:08:17,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 126 transitions. [2022-12-13 11:08:17,836 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 126 transitions. Word has length 97 [2022-12-13 11:08:17,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:08:17,836 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 126 transitions. [2022-12-13 11:08:17,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:08:17,836 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 126 transitions. [2022-12-13 11:08:17,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-12-13 11:08:17,837 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:08:17,837 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:08:17,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 11:08:17,838 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 11:08:17,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:08:17,838 INFO L85 PathProgramCache]: Analyzing trace with hash 853988464, now seen corresponding path program 1 times [2022-12-13 11:08:17,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:08:17,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389629259] [2022-12-13 11:08:17,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:08:17,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:08:17,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:08:17,976 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2022-12-13 11:08:17,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:08:17,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389629259] [2022-12-13 11:08:17,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389629259] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:08:17,977 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:08:17,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 11:08:17,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611583385] [2022-12-13 11:08:17,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:08:17,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 11:08:17,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:08:17,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 11:08:17,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:08:17,978 INFO L87 Difference]: Start difference. First operand 120 states and 126 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 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) [2022-12-13 11:08:18,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:08:18,019 INFO L93 Difference]: Finished difference Result 125 states and 129 transitions. [2022-12-13 11:08:18,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 11:08:18,020 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 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) Word has length 99 [2022-12-13 11:08:18,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:08:18,021 INFO L225 Difference]: With dead ends: 125 [2022-12-13 11:08:18,021 INFO L226 Difference]: Without dead ends: 125 [2022-12-13 11:08:18,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-12-13 11:08:18,022 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 45 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:08:18,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 39 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 11:08:18,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2022-12-13 11:08:18,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 120. [2022-12-13 11:08:18,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 116 states have (on average 1.0775862068965518) internal successors, (125), 119 states have internal predecessors, (125), 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) [2022-12-13 11:08:18,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 125 transitions. [2022-12-13 11:08:18,027 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 125 transitions. Word has length 99 [2022-12-13 11:08:18,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:08:18,027 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 125 transitions. [2022-12-13 11:08:18,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 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) [2022-12-13 11:08:18,027 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 125 transitions. [2022-12-13 11:08:18,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-12-13 11:08:18,028 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:08:18,028 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:08:18,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 11:08:18,028 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 11:08:18,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:08:18,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1714714637, now seen corresponding path program 1 times [2022-12-13 11:08:18,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:08:18,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850000982] [2022-12-13 11:08:18,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:08:18,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:08:18,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:08:18,442 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:08:18,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:08:18,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850000982] [2022-12-13 11:08:18,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850000982] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:08:18,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282854825] [2022-12-13 11:08:18,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:08:18,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:08:18,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5af98b-2b84-4428-a6e9-3a4f8453f657/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:08:18,444 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5af98b-2b84-4428-a6e9-3a4f8453f657/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:08:18,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5af98b-2b84-4428-a6e9-3a4f8453f657/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 11:08:18,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:08:18,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-13 11:08:18,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:08:18,653 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:08:18,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:08:19,176 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:08:19,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [282854825] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:08:19,176 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:08:19,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2022-12-13 11:08:19,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581366410] [2022-12-13 11:08:19,177 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:08:19,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-12-13 11:08:19,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:08:19,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-12-13 11:08:19,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2022-12-13 11:08:19,180 INFO L87 Difference]: Start difference. First operand 120 states and 125 transitions. Second operand has 49 states, 49 states have (on average 4.0) internal successors, (196), 49 states have internal predecessors, (196), 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) [2022-12-13 11:08:19,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:08:19,338 INFO L93 Difference]: Finished difference Result 216 states and 221 transitions. [2022-12-13 11:08:19,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-12-13 11:08:19,339 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 4.0) internal successors, (196), 49 states have internal predecessors, (196), 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 101 [2022-12-13 11:08:19,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:08:19,340 INFO L225 Difference]: With dead ends: 216 [2022-12-13 11:08:19,341 INFO L226 Difference]: Without dead ends: 216 [2022-12-13 11:08:19,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2022-12-13 11:08:19,342 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 6 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:08:19,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 202 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 11:08:19,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2022-12-13 11:08:19,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2022-12-13 11:08:19,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 212 states have (on average 1.0424528301886793) internal successors, (221), 215 states have internal predecessors, (221), 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) [2022-12-13 11:08:19,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 221 transitions. [2022-12-13 11:08:19,353 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 221 transitions. Word has length 101 [2022-12-13 11:08:19,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:08:19,354 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 221 transitions. [2022-12-13 11:08:19,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 4.0) internal successors, (196), 49 states have internal predecessors, (196), 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) [2022-12-13 11:08:19,354 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 221 transitions. [2022-12-13 11:08:19,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2022-12-13 11:08:19,358 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:08:19,358 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:08:19,363 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5af98b-2b84-4428-a6e9-3a4f8453f657/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 11:08:19,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5af98b-2b84-4428-a6e9-3a4f8453f657/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-12-13 11:08:19,560 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 11:08:19,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:08:19,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1874420395, now seen corresponding path program 2 times [2022-12-13 11:08:19,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:08:19,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968461114] [2022-12-13 11:08:19,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:08:19,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:08:19,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:08:21,097 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:08:21,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:08:21,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968461114] [2022-12-13 11:08:21,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968461114] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:08:21,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832846426] [2022-12-13 11:08:21,098 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 11:08:21,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:08:21,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5af98b-2b84-4428-a6e9-3a4f8453f657/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:08:21,099 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5af98b-2b84-4428-a6e9-3a4f8453f657/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:08:21,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5af98b-2b84-4428-a6e9-3a4f8453f657/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 11:08:21,179 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 11:08:21,179 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:08:21,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 11:08:21,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:08:21,809 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~p~0#1.base| Int)) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_main_~p~0#1.base|) 0) (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_main_~p~0#1.base| 0)))) is different from true [2022-12-13 11:08:21,812 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4186 trivial. 0 not checked. [2022-12-13 11:08:21,812 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:08:21,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1832846426] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:08:21,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 11:08:21,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [49] total 51 [2022-12-13 11:08:21,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796077976] [2022-12-13 11:08:21,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:08:21,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:08:21,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:08:21,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:08:21,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1180, Invalid=1273, Unknown=1, NotChecked=96, Total=2550 [2022-12-13 11:08:21,814 INFO L87 Difference]: Start difference. First operand 216 states and 221 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 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) [2022-12-13 11:08:21,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:08:21,865 INFO L93 Difference]: Finished difference Result 215 states and 220 transitions. [2022-12-13 11:08:21,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:08:21,865 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 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) Word has length 197 [2022-12-13 11:08:21,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:08:21,867 INFO L225 Difference]: With dead ends: 215 [2022-12-13 11:08:21,867 INFO L226 Difference]: Without dead ends: 211 [2022-12-13 11:08:21,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1183, Invalid=1370, Unknown=1, NotChecked=98, Total=2652 [2022-12-13 11:08:21,868 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 11 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 26 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:08:21,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 19 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 26 Unchecked, 0.0s Time] [2022-12-13 11:08:21,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2022-12-13 11:08:21,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2022-12-13 11:08:21,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 208 states have (on average 1.0336538461538463) internal successors, (215), 210 states have internal predecessors, (215), 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) [2022-12-13 11:08:21,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 215 transitions. [2022-12-13 11:08:21,874 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 215 transitions. Word has length 197 [2022-12-13 11:08:21,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:08:21,874 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 215 transitions. [2022-12-13 11:08:21,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 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) [2022-12-13 11:08:21,875 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 215 transitions. [2022-12-13 11:08:21,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2022-12-13 11:08:21,877 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:08:21,877 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:08:21,882 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5af98b-2b84-4428-a6e9-3a4f8453f657/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 11:08:22,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5af98b-2b84-4428-a6e9-3a4f8453f657/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:08:22,079 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 11:08:22,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:08:22,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1875755066, now seen corresponding path program 1 times [2022-12-13 11:08:22,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:08:22,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008012348] [2022-12-13 11:08:22,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:08:22,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:08:22,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:08:23,234 INFO L134 CoverageAnalysis]: Checked inductivity of 4189 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 11:08:23,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:08:23,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008012348] [2022-12-13 11:08:23,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008012348] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:08:23,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490962274] [2022-12-13 11:08:23,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:08:23,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:08:23,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5af98b-2b84-4428-a6e9-3a4f8453f657/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:08:23,236 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5af98b-2b84-4428-a6e9-3a4f8453f657/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:08:23,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5af98b-2b84-4428-a6e9-3a4f8453f657/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 11:08:23,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:08:23,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 697 conjuncts, 48 conjunts are in the unsatisfiable core [2022-12-13 11:08:23,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:08:23,529 INFO L134 CoverageAnalysis]: Checked inductivity of 4189 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 11:08:23,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:08:25,215 INFO L134 CoverageAnalysis]: Checked inductivity of 4189 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 11:08:25,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490962274] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:08:25,215 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:08:25,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 97 [2022-12-13 11:08:25,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265076132] [2022-12-13 11:08:25,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:08:25,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2022-12-13 11:08:25,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:08:25,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2022-12-13 11:08:25,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2022-12-13 11:08:25,219 INFO L87 Difference]: Start difference. First operand 211 states and 215 transitions. Second operand has 97 states, 97 states have (on average 3.979381443298969) internal successors, (386), 97 states have internal predecessors, (386), 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) [2022-12-13 11:08:25,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:08:25,565 INFO L93 Difference]: Finished difference Result 403 states and 407 transitions. [2022-12-13 11:08:25,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-12-13 11:08:25,566 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 3.979381443298969) internal successors, (386), 97 states have internal predecessors, (386), 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 197 [2022-12-13 11:08:25,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:08:25,567 INFO L225 Difference]: With dead ends: 403 [2022-12-13 11:08:25,567 INFO L226 Difference]: Without dead ends: 403 [2022-12-13 11:08:25,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 346 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2022-12-13 11:08:25,570 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 6 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 11:08:25,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 182 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 11:08:25,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2022-12-13 11:08:25,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2022-12-13 11:08:25,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 400 states have (on average 1.0175) internal successors, (407), 402 states have internal predecessors, (407), 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) [2022-12-13 11:08:25,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 407 transitions. [2022-12-13 11:08:25,577 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 407 transitions. Word has length 197 [2022-12-13 11:08:25,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:08:25,578 INFO L495 AbstractCegarLoop]: Abstraction has 403 states and 407 transitions. [2022-12-13 11:08:25,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 3.979381443298969) internal successors, (386), 97 states have internal predecessors, (386), 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) [2022-12-13 11:08:25,578 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 407 transitions. [2022-12-13 11:08:25,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2022-12-13 11:08:25,584 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:08:25,585 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 94, 94, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:08:25,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5af98b-2b84-4428-a6e9-3a4f8453f657/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-13 11:08:25,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5af98b-2b84-4428-a6e9-3a4f8453f657/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:08:25,786 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 11:08:25,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:08:25,787 INFO L85 PathProgramCache]: Analyzing trace with hash -385247830, now seen corresponding path program 2 times [2022-12-13 11:08:25,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:08:25,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654164373] [2022-12-13 11:08:25,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:08:25,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:08:25,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:08:31,116 INFO L134 CoverageAnalysis]: Checked inductivity of 17581 backedges. 0 proven. 17578 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 11:08:31,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:08:31,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654164373] [2022-12-13 11:08:31,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654164373] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:08:31,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739796918] [2022-12-13 11:08:31,117 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 11:08:31,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:08:31,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5af98b-2b84-4428-a6e9-3a4f8453f657/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:08:31,118 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5af98b-2b84-4428-a6e9-3a4f8453f657/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:08:31,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5af98b-2b84-4428-a6e9-3a4f8453f657/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 11:08:31,287 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 11:08:31,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:08:31,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 1369 conjuncts, 96 conjunts are in the unsatisfiable core [2022-12-13 11:08:31,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:08:31,626 INFO L134 CoverageAnalysis]: Checked inductivity of 17581 backedges. 0 proven. 17578 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 11:08:31,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:08:38,849 INFO L134 CoverageAnalysis]: Checked inductivity of 17581 backedges. 0 proven. 17578 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 11:08:38,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [739796918] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:08:38,849 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:08:38,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97, 97] total 193 [2022-12-13 11:08:38,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893236446] [2022-12-13 11:08:38,850 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:08:38,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 193 states [2022-12-13 11:08:38,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:08:38,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2022-12-13 11:08:38,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2022-12-13 11:08:38,863 INFO L87 Difference]: Start difference. First operand 403 states and 407 transitions. Second operand has 193 states, 193 states have (on average 3.989637305699482) internal successors, (770), 193 states have internal predecessors, (770), 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) [2022-12-13 11:08:40,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:08:40,047 INFO L93 Difference]: Finished difference Result 787 states and 791 transitions. [2022-12-13 11:08:40,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2022-12-13 11:08:40,048 INFO L78 Accepts]: Start accepts. Automaton has has 193 states, 193 states have (on average 3.989637305699482) internal successors, (770), 193 states have internal predecessors, (770), 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 389 [2022-12-13 11:08:40,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:08:40,053 INFO L225 Difference]: With dead ends: 787 [2022-12-13 11:08:40,053 INFO L226 Difference]: Without dead ends: 787 [2022-12-13 11:08:40,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 873 GetRequests, 682 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2022-12-13 11:08:40,056 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 6 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 11:08:40,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 328 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 11:08:40,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2022-12-13 11:08:40,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 787. [2022-12-13 11:08:40,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 787 states, 784 states have (on average 1.0089285714285714) internal successors, (791), 786 states have internal predecessors, (791), 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) [2022-12-13 11:08:40,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 787 states to 787 states and 791 transitions. [2022-12-13 11:08:40,072 INFO L78 Accepts]: Start accepts. Automaton has 787 states and 791 transitions. Word has length 389 [2022-12-13 11:08:40,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:08:40,073 INFO L495 AbstractCegarLoop]: Abstraction has 787 states and 791 transitions. [2022-12-13 11:08:40,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 193 states, 193 states have (on average 3.989637305699482) internal successors, (770), 193 states have internal predecessors, (770), 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) [2022-12-13 11:08:40,074 INFO L276 IsEmpty]: Start isEmpty. Operand 787 states and 791 transitions. [2022-12-13 11:08:40,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 774 [2022-12-13 11:08:40,093 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:08:40,094 INFO L195 NwaCegarLoop]: trace histogram [190, 190, 190, 190, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:08:40,099 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5af98b-2b84-4428-a6e9-3a4f8453f657/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-13 11:08:40,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5af98b-2b84-4428-a6e9-3a4f8453f657/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-13 11:08:40,296 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 11:08:40,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:08:40,297 INFO L85 PathProgramCache]: Analyzing trace with hash 587317386, now seen corresponding path program 3 times [2022-12-13 11:08:40,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:08:40,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640510197] [2022-12-13 11:08:40,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:08:40,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:08:40,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:09:03,077 INFO L134 CoverageAnalysis]: Checked inductivity of 72013 backedges. 0 proven. 72010 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 11:09:03,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:09:03,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640510197] [2022-12-13 11:09:03,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640510197] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:09:03,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676218469] [2022-12-13 11:09:03,077 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 11:09:03,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:09:03,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5af98b-2b84-4428-a6e9-3a4f8453f657/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:09:03,078 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5af98b-2b84-4428-a6e9-3a4f8453f657/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:09:03,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5af98b-2b84-4428-a6e9-3a4f8453f657/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 11:09:03,225 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 11:09:03,225 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:09:03,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 11:09:03,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:09:03,236 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 11:09:05,527 INFO L134 CoverageAnalysis]: Checked inductivity of 72013 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 72010 trivial. 0 not checked. [2022-12-13 11:09:05,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:09:08,223 INFO L134 CoverageAnalysis]: Checked inductivity of 72013 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 72010 trivial. 0 not checked. [2022-12-13 11:09:08,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676218469] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:09:08,224 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:09:08,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [193, 7, 7] total 205 [2022-12-13 11:09:08,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467063773] [2022-12-13 11:09:08,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:09:08,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 205 states [2022-12-13 11:09:08,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:09:08,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 205 interpolants. [2022-12-13 11:09:08,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18572, Invalid=23248, Unknown=0, NotChecked=0, Total=41820 [2022-12-13 11:09:08,231 INFO L87 Difference]: Start difference. First operand 787 states and 791 transitions. Second operand has 205 states, 205 states have (on average 3.9170731707317072) internal successors, (803), 205 states have internal predecessors, (803), 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) [2022-12-13 11:09:27,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:09:27,907 INFO L93 Difference]: Finished difference Result 833 states and 846 transitions. [2022-12-13 11:09:27,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 205 states. [2022-12-13 11:09:27,908 INFO L78 Accepts]: Start accepts. Automaton has has 205 states, 205 states have (on average 3.9170731707317072) internal successors, (803), 205 states have internal predecessors, (803), 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 773 [2022-12-13 11:09:27,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:09:27,911 INFO L225 Difference]: With dead ends: 833 [2022-12-13 11:09:27,911 INFO L226 Difference]: Without dead ends: 833 [2022-12-13 11:09:27,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1938 GetRequests, 1534 SyntacticMatches, 0 SemanticMatches, 404 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22620 ImplicationChecksByTransitivity, 27.6s TimeCoverageRelationStatistics Valid=58610, Invalid=105820, Unknown=0, NotChecked=0, Total=164430 [2022-12-13 11:09:27,922 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 4818 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 858 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4818 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-13 11:09:27,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4818 Valid, 380 Invalid, 891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 858 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-13 11:09:27,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2022-12-13 11:09:27,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 812. [2022-12-13 11:09:27,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 812 states, 811 states have (on average 1.0123304562268804) internal successors, (821), 811 states have internal predecessors, (821), 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) [2022-12-13 11:09:27,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 821 transitions. [2022-12-13 11:09:27,936 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 821 transitions. Word has length 773 [2022-12-13 11:09:27,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:09:27,937 INFO L495 AbstractCegarLoop]: Abstraction has 812 states and 821 transitions. [2022-12-13 11:09:27,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 205 states, 205 states have (on average 3.9170731707317072) internal successors, (803), 205 states have internal predecessors, (803), 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) [2022-12-13 11:09:27,938 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 821 transitions. [2022-12-13 11:09:27,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 790 [2022-12-13 11:09:27,943 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:09:27,944 INFO L195 NwaCegarLoop]: trace histogram [191, 191, 191, 191, 5, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:09:27,948 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5af98b-2b84-4428-a6e9-3a4f8453f657/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 11:09:28,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5af98b-2b84-4428-a6e9-3a4f8453f657/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-13 11:09:28,145 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 11:09:28,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:09:28,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1797387683, now seen corresponding path program 1 times [2022-12-13 11:09:28,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:09:28,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040954553] [2022-12-13 11:09:28,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:09:28,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:09:28,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:09:28,502 INFO L134 CoverageAnalysis]: Checked inductivity of 72804 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 72783 trivial. 0 not checked. [2022-12-13 11:09:28,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:09:28,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040954553] [2022-12-13 11:09:28,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040954553] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:09:28,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:09:28,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:09:28,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904998195] [2022-12-13 11:09:28,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:09:28,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:09:28,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:09:28,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:09:28,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:09:28,505 INFO L87 Difference]: Start difference. First operand 812 states and 821 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 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) [2022-12-13 11:09:28,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:09:28,510 INFO L93 Difference]: Finished difference Result 815 states and 821 transitions. [2022-12-13 11:09:28,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:09:28,511 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 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) Word has length 789 [2022-12-13 11:09:28,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:09:28,516 INFO L225 Difference]: With dead ends: 815 [2022-12-13 11:09:28,516 INFO L226 Difference]: Without dead ends: 812 [2022-12-13 11:09:28,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:09:28,517 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:09:28,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 11:09:28,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2022-12-13 11:09:28,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 812. [2022-12-13 11:09:28,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 812 states, 811 states have (on average 1.0073982737361282) internal successors, (817), 811 states have internal predecessors, (817), 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) [2022-12-13 11:09:28,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 817 transitions. [2022-12-13 11:09:28,524 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 817 transitions. Word has length 789 [2022-12-13 11:09:28,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:09:28,525 INFO L495 AbstractCegarLoop]: Abstraction has 812 states and 817 transitions. [2022-12-13 11:09:28,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 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) [2022-12-13 11:09:28,525 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 817 transitions. [2022-12-13 11:09:28,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 796 [2022-12-13 11:09:28,528 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:09:28,528 INFO L195 NwaCegarLoop]: trace histogram [191, 191, 191, 191, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2022-12-13 11:09:28,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 11:09:28,528 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 11:09:28,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:09:28,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1085945492, now seen corresponding path program 4 times [2022-12-13 11:09:28,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:09:28,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987176848] [2022-12-13 11:09:28,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:09:28,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:09:28,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:09:50,925 INFO L134 CoverageAnalysis]: Checked inductivity of 72819 backedges. 0 proven. 72771 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-12-13 11:09:50,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:09:50,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987176848] [2022-12-13 11:09:50,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987176848] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:09:50,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400357255] [2022-12-13 11:09:50,926 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 11:09:50,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:09:50,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5af98b-2b84-4428-a6e9-3a4f8453f657/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:09:50,927 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5af98b-2b84-4428-a6e9-3a4f8453f657/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:09:50,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c5af98b-2b84-4428-a6e9-3a4f8453f657/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process