./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-ext/tree_parent_ptr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- 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_6fa99a03-d506-4bf1-829a-f4371062457c/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa99a03-d506-4bf1-829a-f4371062457c/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_6fa99a03-d506-4bf1-829a-f4371062457c/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa99a03-d506-4bf1-829a-f4371062457c/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext/tree_parent_ptr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa99a03-d506-4bf1-829a-f4371062457c/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa99a03-d506-4bf1-829a-f4371062457c/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 32bit --witnessprinter.graph.data.programhash 6e14aa3eeddc5d261248d26114db1375e0f229d6456e2c7754877a082dc10921 --- 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 14:15:35,313 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 14:15:35,314 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 14:15:35,326 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 14:15:35,326 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 14:15:35,327 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 14:15:35,328 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 14:15:35,329 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 14:15:35,330 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 14:15:35,330 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 14:15:35,331 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 14:15:35,331 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 14:15:35,332 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 14:15:35,332 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 14:15:35,333 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 14:15:35,333 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 14:15:35,334 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 14:15:35,335 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 14:15:35,336 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 14:15:35,337 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 14:15:35,338 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 14:15:35,338 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 14:15:35,339 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 14:15:35,340 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 14:15:35,342 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 14:15:35,342 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 14:15:35,342 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 14:15:35,343 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 14:15:35,343 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 14:15:35,344 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 14:15:35,344 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 14:15:35,344 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 14:15:35,345 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 14:15:35,345 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 14:15:35,346 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 14:15:35,346 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 14:15:35,347 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 14:15:35,347 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 14:15:35,347 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 14:15:35,347 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 14:15:35,348 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 14:15:35,348 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa99a03-d506-4bf1-829a-f4371062457c/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-12-13 14:15:35,362 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 14:15:35,362 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 14:15:35,362 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 14:15:35,363 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 14:15:35,363 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 14:15:35,363 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 14:15:35,364 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 14:15:35,364 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 14:15:35,364 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 14:15:35,364 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 14:15:35,364 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 14:15:35,364 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 14:15:35,364 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 14:15:35,364 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 14:15:35,364 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 14:15:35,364 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 14:15:35,364 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 14:15:35,365 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 14:15:35,365 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 14:15:35,365 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 14:15:35,365 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 14:15:35,365 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 14:15:35,365 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 14:15:35,365 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 14:15:35,365 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 14:15:35,365 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 14:15:35,365 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 14:15:35,366 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 14:15:35,366 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 14:15:35,366 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 14:15:35,366 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 14:15:35,366 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 14:15:35,366 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 14:15:35,366 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 14:15:35,366 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_6fa99a03-d506-4bf1-829a-f4371062457c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa99a03-d506-4bf1-829a-f4371062457c/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6e14aa3eeddc5d261248d26114db1375e0f229d6456e2c7754877a082dc10921 [2022-12-13 14:15:35,574 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 14:15:35,592 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 14:15:35,594 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 14:15:35,595 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 14:15:35,595 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 14:15:35,596 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa99a03-d506-4bf1-829a-f4371062457c/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/memsafety-ext/tree_parent_ptr.i [2022-12-13 14:15:38,072 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 14:15:38,286 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 14:15:38,286 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa99a03-d506-4bf1-829a-f4371062457c/sv-benchmarks/c/memsafety-ext/tree_parent_ptr.i [2022-12-13 14:15:38,297 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa99a03-d506-4bf1-829a-f4371062457c/bin/uautomizer-uyxdKDjOR8/data/dca39021d/5df87cba5d0a413c86780578c9cbd2bb/FLAGb6464c833 [2022-12-13 14:15:38,678 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa99a03-d506-4bf1-829a-f4371062457c/bin/uautomizer-uyxdKDjOR8/data/dca39021d/5df87cba5d0a413c86780578c9cbd2bb [2022-12-13 14:15:38,682 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 14:15:38,684 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 14:15:38,685 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 14:15:38,686 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 14:15:38,690 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 14:15:38,690 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 02:15:38" (1/1) ... [2022-12-13 14:15:38,692 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@554e2d79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:15:38, skipping insertion in model container [2022-12-13 14:15:38,692 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 02:15:38" (1/1) ... [2022-12-13 14:15:38,698 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 14:15:38,722 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 14:15:38,899 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 14:15:38,906 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 14:15:38,938 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 14:15:38,955 INFO L208 MainTranslator]: Completed translation [2022-12-13 14:15:38,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:15:38 WrapperNode [2022-12-13 14:15:38,955 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 14:15:38,956 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 14:15:38,956 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 14:15:38,956 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 14:15:38,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:15:38" (1/1) ... [2022-12-13 14:15:38,974 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:15:38" (1/1) ... [2022-12-13 14:15:38,994 INFO L138 Inliner]: procedures = 123, calls = 49, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 149 [2022-12-13 14:15:38,994 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 14:15:38,995 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 14:15:38,995 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 14:15:38,995 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 14:15:39,003 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:15:38" (1/1) ... [2022-12-13 14:15:39,003 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:15:38" (1/1) ... [2022-12-13 14:15:39,007 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:15:38" (1/1) ... [2022-12-13 14:15:39,007 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:15:38" (1/1) ... [2022-12-13 14:15:39,016 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:15:38" (1/1) ... [2022-12-13 14:15:39,019 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:15:38" (1/1) ... [2022-12-13 14:15:39,021 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:15:38" (1/1) ... [2022-12-13 14:15:39,022 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:15:38" (1/1) ... [2022-12-13 14:15:39,025 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 14:15:39,026 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 14:15:39,026 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 14:15:39,026 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 14:15:39,027 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:15:38" (1/1) ... [2022-12-13 14:15:39,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 14:15:39,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa99a03-d506-4bf1-829a-f4371062457c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:15:39,055 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa99a03-d506-4bf1-829a-f4371062457c/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 14:15:39,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa99a03-d506-4bf1-829a-f4371062457c/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 14:15:39,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 14:15:39,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 14:15:39,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-13 14:15:39,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-13 14:15:39,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 14:15:39,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 14:15:39,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 14:15:39,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 14:15:39,186 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 14:15:39,188 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 14:15:39,581 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 14:15:39,589 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 14:15:39,589 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-13 14:15:39,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:15:39 BoogieIcfgContainer [2022-12-13 14:15:39,591 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 14:15:39,594 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 14:15:39,594 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 14:15:39,596 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 14:15:39,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 02:15:38" (1/3) ... [2022-12-13 14:15:39,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cd762b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 02:15:39, skipping insertion in model container [2022-12-13 14:15:39,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:15:38" (2/3) ... [2022-12-13 14:15:39,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cd762b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 02:15:39, skipping insertion in model container [2022-12-13 14:15:39,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:15:39" (3/3) ... [2022-12-13 14:15:39,599 INFO L112 eAbstractionObserver]: Analyzing ICFG tree_parent_ptr.i [2022-12-13 14:15:39,615 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 14:15:39,615 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 77 error locations. [2022-12-13 14:15:39,654 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 14:15:39,660 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;@272de626, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 14:15:39,661 INFO L358 AbstractCegarLoop]: Starting to check reachability of 77 error locations. [2022-12-13 14:15:39,664 INFO L276 IsEmpty]: Start isEmpty. Operand has 155 states, 77 states have (on average 2.1818181818181817) internal successors, (168), 154 states have internal predecessors, (168), 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 14:15:39,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-13 14:15:39,668 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:15:39,669 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-13 14:15:39,669 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-12-13 14:15:39,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:15:39,673 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2022-12-13 14:15:39,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:15:39,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645795030] [2022-12-13 14:15:39,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:15:39,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:15:39,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:15:39,832 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 14:15:39,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:15:39,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645795030] [2022-12-13 14:15:39,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645795030] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:15:39,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:15:39,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 14:15:39,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582959536] [2022-12-13 14:15:39,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:15:39,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:15:39,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:15:39,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:15:39,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:15:39,866 INFO L87 Difference]: Start difference. First operand has 155 states, 77 states have (on average 2.1818181818181817) internal successors, (168), 154 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:15:40,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:15:40,013 INFO L93 Difference]: Finished difference Result 172 states and 182 transitions. [2022-12-13 14:15:40,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:15:40,016 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-12-13 14:15:40,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:15:40,024 INFO L225 Difference]: With dead ends: 172 [2022-12-13 14:15:40,025 INFO L226 Difference]: Without dead ends: 168 [2022-12-13 14:15:40,026 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 14:15:40,029 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 120 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 14:15:40,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 128 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 14:15:40,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-12-13 14:15:40,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 150. [2022-12-13 14:15:40,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 76 states have (on average 2.1052631578947367) internal successors, (160), 149 states have internal predecessors, (160), 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 14:15:40,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 160 transitions. [2022-12-13 14:15:40,066 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 160 transitions. Word has length 3 [2022-12-13 14:15:40,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:15:40,067 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 160 transitions. [2022-12-13 14:15:40,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:15:40,067 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 160 transitions. [2022-12-13 14:15:40,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-13 14:15:40,067 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:15:40,067 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-13 14:15:40,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 14:15:40,068 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-12-13 14:15:40,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:15:40,068 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2022-12-13 14:15:40,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:15:40,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438867426] [2022-12-13 14:15:40,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:15:40,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:15:40,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:15:40,125 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 14:15:40,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:15:40,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438867426] [2022-12-13 14:15:40,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438867426] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:15:40,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:15:40,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 14:15:40,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342381685] [2022-12-13 14:15:40,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:15:40,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:15:40,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:15:40,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:15:40,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:15:40,128 INFO L87 Difference]: Start difference. First operand 150 states and 160 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:15:40,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:15:40,228 INFO L93 Difference]: Finished difference Result 147 states and 157 transitions. [2022-12-13 14:15:40,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:15:40,229 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-12-13 14:15:40,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:15:40,230 INFO L225 Difference]: With dead ends: 147 [2022-12-13 14:15:40,230 INFO L226 Difference]: Without dead ends: 147 [2022-12-13 14:15:40,231 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 14:15:40,232 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 92 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 14:15:40,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 144 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 14:15:40,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2022-12-13 14:15:40,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2022-12-13 14:15:40,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 76 states have (on average 2.0657894736842106) internal successors, (157), 146 states have internal predecessors, (157), 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 14:15:40,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 157 transitions. [2022-12-13 14:15:40,238 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 157 transitions. Word has length 3 [2022-12-13 14:15:40,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:15:40,238 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 157 transitions. [2022-12-13 14:15:40,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:15:40,238 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 157 transitions. [2022-12-13 14:15:40,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-13 14:15:40,238 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:15:40,239 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:15:40,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 14:15:40,239 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-12-13 14:15:40,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:15:40,240 INFO L85 PathProgramCache]: Analyzing trace with hash 59265651, now seen corresponding path program 1 times [2022-12-13 14:15:40,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:15:40,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712944020] [2022-12-13 14:15:40,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:15:40,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:15:40,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:15:40,304 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 14:15:40,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:15:40,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712944020] [2022-12-13 14:15:40,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712944020] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:15:40,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:15:40,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 14:15:40,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375484561] [2022-12-13 14:15:40,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:15:40,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:15:40,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:15:40,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:15:40,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 14:15:40,307 INFO L87 Difference]: Start difference. First operand 147 states and 157 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:15:40,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:15:40,434 INFO L93 Difference]: Finished difference Result 153 states and 164 transitions. [2022-12-13 14:15:40,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 14:15:40,435 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-13 14:15:40,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:15:40,435 INFO L225 Difference]: With dead ends: 153 [2022-12-13 14:15:40,435 INFO L226 Difference]: Without dead ends: 153 [2022-12-13 14:15:40,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 14:15:40,436 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 198 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 14:15:40,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 100 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 14:15:40,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-12-13 14:15:40,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 131. [2022-12-13 14:15:40,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 77 states have (on average 1.844155844155844) internal successors, (142), 130 states have internal predecessors, (142), 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 14:15:40,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 142 transitions. [2022-12-13 14:15:40,441 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 142 transitions. Word has length 8 [2022-12-13 14:15:40,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:15:40,442 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 142 transitions. [2022-12-13 14:15:40,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:15:40,442 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 142 transitions. [2022-12-13 14:15:40,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-13 14:15:40,442 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:15:40,442 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:15:40,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 14:15:40,442 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-12-13 14:15:40,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:15:40,443 INFO L85 PathProgramCache]: Analyzing trace with hash 59265652, now seen corresponding path program 1 times [2022-12-13 14:15:40,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:15:40,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904690368] [2022-12-13 14:15:40,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:15:40,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:15:40,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:15:40,558 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 14:15:40,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:15:40,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904690368] [2022-12-13 14:15:40,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904690368] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:15:40,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:15:40,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 14:15:40,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081342206] [2022-12-13 14:15:40,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:15:40,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:15:40,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:15:40,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:15:40,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 14:15:40,560 INFO L87 Difference]: Start difference. First operand 131 states and 142 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:15:40,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:15:40,729 INFO L93 Difference]: Finished difference Result 186 states and 204 transitions. [2022-12-13 14:15:40,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 14:15:40,729 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-13 14:15:40,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:15:40,732 INFO L225 Difference]: With dead ends: 186 [2022-12-13 14:15:40,732 INFO L226 Difference]: Without dead ends: 186 [2022-12-13 14:15:40,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 14:15:40,734 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 191 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 14:15:40,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 180 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 14:15:40,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2022-12-13 14:15:40,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 167. [2022-12-13 14:15:40,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 113 states have (on average 1.7168141592920354) internal successors, (194), 166 states have internal predecessors, (194), 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 14:15:40,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 194 transitions. [2022-12-13 14:15:40,747 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 194 transitions. Word has length 8 [2022-12-13 14:15:40,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:15:40,747 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 194 transitions. [2022-12-13 14:15:40,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:15:40,747 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 194 transitions. [2022-12-13 14:15:40,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-13 14:15:40,748 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:15:40,748 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:15:40,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 14:15:40,748 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr46REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-12-13 14:15:40,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:15:40,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1837237128, now seen corresponding path program 1 times [2022-12-13 14:15:40,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:15:40,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177287364] [2022-12-13 14:15:40,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:15:40,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:15:40,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:15:40,811 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 14:15:40,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:15:40,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177287364] [2022-12-13 14:15:40,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177287364] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:15:40,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:15:40,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 14:15:40,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940817666] [2022-12-13 14:15:40,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:15:40,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:15:40,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:15:40,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:15:40,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:15:40,813 INFO L87 Difference]: Start difference. First operand 167 states and 194 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:15:40,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:15:40,880 INFO L93 Difference]: Finished difference Result 171 states and 198 transitions. [2022-12-13 14:15:40,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:15:40,880 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-12-13 14:15:40,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:15:40,882 INFO L225 Difference]: With dead ends: 171 [2022-12-13 14:15:40,882 INFO L226 Difference]: Without dead ends: 171 [2022-12-13 14:15:40,882 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 14:15:40,883 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 10 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 14:15:40,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 199 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 14:15:40,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2022-12-13 14:15:40,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 167. [2022-12-13 14:15:40,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 115 states have (on average 1.7043478260869565) internal successors, (196), 166 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 14:15:40,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 196 transitions. [2022-12-13 14:15:40,893 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 196 transitions. Word has length 9 [2022-12-13 14:15:40,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:15:40,893 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 196 transitions. [2022-12-13 14:15:40,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:15:40,894 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 196 transitions. [2022-12-13 14:15:40,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-13 14:15:40,894 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:15:40,894 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:15:40,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 14:15:40,894 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr47REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-12-13 14:15:40,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:15:40,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1837237129, now seen corresponding path program 1 times [2022-12-13 14:15:40,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:15:40,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143575121] [2022-12-13 14:15:40,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:15:40,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:15:40,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:15:40,973 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 14:15:40,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:15:40,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143575121] [2022-12-13 14:15:40,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143575121] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:15:40,973 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:15:40,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 14:15:40,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809320326] [2022-12-13 14:15:40,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:15:40,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:15:40,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:15:40,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:15:40,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:15:40,975 INFO L87 Difference]: Start difference. First operand 167 states and 196 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:15:41,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:15:41,061 INFO L93 Difference]: Finished difference Result 169 states and 196 transitions. [2022-12-13 14:15:41,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:15:41,061 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-12-13 14:15:41,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:15:41,062 INFO L225 Difference]: With dead ends: 169 [2022-12-13 14:15:41,062 INFO L226 Difference]: Without dead ends: 169 [2022-12-13 14:15:41,063 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 14:15:41,064 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 7 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 14:15:41,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 189 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 14:15:41,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-12-13 14:15:41,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 165. [2022-12-13 14:15:41,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 115 states have (on average 1.6782608695652175) internal successors, (193), 164 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:15:41,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 193 transitions. [2022-12-13 14:15:41,069 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 193 transitions. Word has length 9 [2022-12-13 14:15:41,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:15:41,069 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 193 transitions. [2022-12-13 14:15:41,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:15:41,069 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 193 transitions. [2022-12-13 14:15:41,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-13 14:15:41,070 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:15:41,070 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:15:41,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 14:15:41,070 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr76ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-12-13 14:15:41,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:15:41,070 INFO L85 PathProgramCache]: Analyzing trace with hash 243138738, now seen corresponding path program 1 times [2022-12-13 14:15:41,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:15:41,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347725362] [2022-12-13 14:15:41,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:15:41,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:15:41,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:15:41,099 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 14:15:41,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:15:41,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347725362] [2022-12-13 14:15:41,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347725362] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:15:41,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:15:41,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 14:15:41,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568435045] [2022-12-13 14:15:41,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:15:41,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:15:41,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:15:41,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:15:41,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:15:41,101 INFO L87 Difference]: Start difference. First operand 165 states and 193 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) 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 14:15:41,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:15:41,119 INFO L93 Difference]: Finished difference Result 166 states and 193 transitions. [2022-12-13 14:15:41,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:15:41,120 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) 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 13 [2022-12-13 14:15:41,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:15:41,121 INFO L225 Difference]: With dead ends: 166 [2022-12-13 14:15:41,121 INFO L226 Difference]: Without dead ends: 166 [2022-12-13 14:15:41,121 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 14:15:41,122 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 2 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 14:15:41,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 254 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 14:15:41,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2022-12-13 14:15:41,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 165. [2022-12-13 14:15:41,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 115 states have (on average 1.6695652173913043) internal successors, (192), 164 states have internal predecessors, (192), 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 14:15:41,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 192 transitions. [2022-12-13 14:15:41,127 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 192 transitions. Word has length 13 [2022-12-13 14:15:41,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:15:41,127 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 192 transitions. [2022-12-13 14:15:41,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) 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 14:15:41,127 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 192 transitions. [2022-12-13 14:15:41,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-13 14:15:41,128 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:15:41,128 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:15:41,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 14:15:41,128 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-12-13 14:15:41,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:15:41,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1052634445, now seen corresponding path program 1 times [2022-12-13 14:15:41,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:15:41,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779910315] [2022-12-13 14:15:41,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:15:41,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:15:41,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:15:41,193 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 14:15:41,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:15:41,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779910315] [2022-12-13 14:15:41,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779910315] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:15:41,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:15:41,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 14:15:41,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737182595] [2022-12-13 14:15:41,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:15:41,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 14:15:41,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:15:41,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 14:15:41,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 14:15:41,195 INFO L87 Difference]: Start difference. First operand 165 states and 192 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:15:41,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:15:41,318 INFO L93 Difference]: Finished difference Result 178 states and 206 transitions. [2022-12-13 14:15:41,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 14:15:41,318 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-12-13 14:15:41,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:15:41,320 INFO L225 Difference]: With dead ends: 178 [2022-12-13 14:15:41,320 INFO L226 Difference]: Without dead ends: 178 [2022-12-13 14:15:41,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 14:15:41,321 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 33 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 14:15:41,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 304 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 14:15:41,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2022-12-13 14:15:41,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 162. [2022-12-13 14:15:41,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 117 states have (on average 1.623931623931624) internal successors, (190), 161 states have internal predecessors, (190), 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 14:15:41,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 190 transitions. [2022-12-13 14:15:41,326 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 190 transitions. Word has length 14 [2022-12-13 14:15:41,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:15:41,326 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 190 transitions. [2022-12-13 14:15:41,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:15:41,327 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 190 transitions. [2022-12-13 14:15:41,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-13 14:15:41,327 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:15:41,327 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:15:41,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 14:15:41,328 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-12-13 14:15:41,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:15:41,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1052634444, now seen corresponding path program 1 times [2022-12-13 14:15:41,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:15:41,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119390272] [2022-12-13 14:15:41,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:15:41,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:15:41,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:15:41,443 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 14:15:41,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:15:41,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119390272] [2022-12-13 14:15:41,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119390272] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:15:41,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:15:41,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 14:15:41,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015500645] [2022-12-13 14:15:41,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:15:41,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 14:15:41,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:15:41,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 14:15:41,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-13 14:15:41,445 INFO L87 Difference]: Start difference. First operand 162 states and 190 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:15:41,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:15:41,655 INFO L93 Difference]: Finished difference Result 201 states and 231 transitions. [2022-12-13 14:15:41,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 14:15:41,655 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-12-13 14:15:41,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:15:41,656 INFO L225 Difference]: With dead ends: 201 [2022-12-13 14:15:41,656 INFO L226 Difference]: Without dead ends: 201 [2022-12-13 14:15:41,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-12-13 14:15:41,657 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 52 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 14:15:41,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 352 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 14:15:41,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-12-13 14:15:41,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 169. [2022-12-13 14:15:41,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 128 states have (on average 1.5859375) internal successors, (203), 168 states have internal predecessors, (203), 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 14:15:41,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 203 transitions. [2022-12-13 14:15:41,661 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 203 transitions. Word has length 14 [2022-12-13 14:15:41,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:15:41,662 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 203 transitions. [2022-12-13 14:15:41,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:15:41,662 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 203 transitions. [2022-12-13 14:15:41,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-13 14:15:41,662 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:15:41,662 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:15:41,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 14:15:41,663 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-12-13 14:15:41,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:15:41,663 INFO L85 PathProgramCache]: Analyzing trace with hash 395262676, now seen corresponding path program 1 times [2022-12-13 14:15:41,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:15:41,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310684139] [2022-12-13 14:15:41,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:15:41,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:15:41,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:15:41,689 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:15:41,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:15:41,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310684139] [2022-12-13 14:15:41,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310684139] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:15:41,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:15:41,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 14:15:41,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065970744] [2022-12-13 14:15:41,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:15:41,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:15:41,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:15:41,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:15:41,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:15:41,691 INFO L87 Difference]: Start difference. First operand 169 states and 203 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 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 14:15:41,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:15:41,699 INFO L93 Difference]: Finished difference Result 171 states and 205 transitions. [2022-12-13 14:15:41,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:15:41,700 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 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 15 [2022-12-13 14:15:41,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:15:41,701 INFO L225 Difference]: With dead ends: 171 [2022-12-13 14:15:41,701 INFO L226 Difference]: Without dead ends: 171 [2022-12-13 14:15:41,701 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 14:15:41,702 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 0 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 14:15:41,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 246 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 14:15:41,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2022-12-13 14:15:41,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2022-12-13 14:15:41,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 130 states have (on average 1.5769230769230769) internal successors, (205), 170 states have internal predecessors, (205), 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 14:15:41,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 205 transitions. [2022-12-13 14:15:41,707 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 205 transitions. Word has length 15 [2022-12-13 14:15:41,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:15:41,707 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 205 transitions. [2022-12-13 14:15:41,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 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 14:15:41,707 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 205 transitions. [2022-12-13 14:15:41,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-13 14:15:41,708 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:15:41,708 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:15:41,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 14:15:41,708 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr55ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-12-13 14:15:41,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:15:41,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1476383815, now seen corresponding path program 1 times [2022-12-13 14:15:41,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:15:41,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248372209] [2022-12-13 14:15:41,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:15:41,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:15:41,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:15:41,768 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 14:15:41,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:15:41,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248372209] [2022-12-13 14:15:41,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248372209] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:15:41,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:15:41,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 14:15:41,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313993321] [2022-12-13 14:15:41,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:15:41,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 14:15:41,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:15:41,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 14:15:41,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 14:15:41,770 INFO L87 Difference]: Start difference. First operand 171 states and 205 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 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 14:15:41,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:15:41,833 INFO L93 Difference]: Finished difference Result 185 states and 213 transitions. [2022-12-13 14:15:41,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 14:15:41,834 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 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 17 [2022-12-13 14:15:41,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:15:41,835 INFO L225 Difference]: With dead ends: 185 [2022-12-13 14:15:41,835 INFO L226 Difference]: Without dead ends: 185 [2022-12-13 14:15:41,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-12-13 14:15:41,836 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 60 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 14:15:41,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 309 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 14:15:41,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2022-12-13 14:15:41,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 172. [2022-12-13 14:15:41,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 131 states have (on average 1.5725190839694656) internal successors, (206), 171 states have internal predecessors, (206), 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 14:15:41,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 206 transitions. [2022-12-13 14:15:41,839 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 206 transitions. Word has length 17 [2022-12-13 14:15:41,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:15:41,839 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 206 transitions. [2022-12-13 14:15:41,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 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 14:15:41,839 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 206 transitions. [2022-12-13 14:15:41,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-13 14:15:41,840 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:15:41,840 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:15:41,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 14:15:41,840 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-12-13 14:15:41,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:15:41,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1645245929, now seen corresponding path program 1 times [2022-12-13 14:15:41,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:15:41,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305504146] [2022-12-13 14:15:41,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:15:41,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:15:41,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:15:42,030 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:15:42,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:15:42,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305504146] [2022-12-13 14:15:42,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305504146] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:15:42,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:15:42,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 14:15:42,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032760435] [2022-12-13 14:15:42,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:15:42,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 14:15:42,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:15:42,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 14:15:42,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 14:15:42,032 INFO L87 Difference]: Start difference. First operand 172 states and 206 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 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 14:15:42,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:15:42,201 INFO L93 Difference]: Finished difference Result 209 states and 249 transitions. [2022-12-13 14:15:42,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 14:15:42,201 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 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 17 [2022-12-13 14:15:42,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:15:42,202 INFO L225 Difference]: With dead ends: 209 [2022-12-13 14:15:42,202 INFO L226 Difference]: Without dead ends: 209 [2022-12-13 14:15:42,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-12-13 14:15:42,203 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 52 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 14:15:42,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 477 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 14:15:42,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2022-12-13 14:15:42,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 186. [2022-12-13 14:15:42,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 145 states have (on average 1.5517241379310345) internal successors, (225), 185 states have internal predecessors, (225), 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 14:15:42,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 225 transitions. [2022-12-13 14:15:42,207 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 225 transitions. Word has length 17 [2022-12-13 14:15:42,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:15:42,208 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 225 transitions. [2022-12-13 14:15:42,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 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 14:15:42,208 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 225 transitions. [2022-12-13 14:15:42,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-12-13 14:15:42,208 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:15:42,208 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:15:42,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 14:15:42,209 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr57REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-12-13 14:15:42,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:15:42,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1465631940, now seen corresponding path program 1 times [2022-12-13 14:15:42,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:15:42,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122050179] [2022-12-13 14:15:42,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:15:42,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:15:42,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:15:42,496 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 14:15:42,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:15:42,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122050179] [2022-12-13 14:15:42,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122050179] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:15:42,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:15:42,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-13 14:15:42,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520972856] [2022-12-13 14:15:42,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:15:42,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 14:15:42,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:15:42,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 14:15:42,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-12-13 14:15:42,498 INFO L87 Difference]: Start difference. First operand 186 states and 225 transitions. Second operand has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:15:42,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:15:42,958 INFO L93 Difference]: Finished difference Result 207 states and 246 transitions. [2022-12-13 14:15:42,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 14:15:42,958 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-12-13 14:15:42,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:15:42,960 INFO L225 Difference]: With dead ends: 207 [2022-12-13 14:15:42,960 INFO L226 Difference]: Without dead ends: 207 [2022-12-13 14:15:42,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2022-12-13 14:15:42,961 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 275 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 677 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 14:15:42,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 383 Invalid, 692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 677 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 14:15:42,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2022-12-13 14:15:42,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 191. [2022-12-13 14:15:42,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 150 states have (on average 1.54) internal successors, (231), 190 states have internal predecessors, (231), 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 14:15:42,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 231 transitions. [2022-12-13 14:15:42,966 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 231 transitions. Word has length 19 [2022-12-13 14:15:42,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:15:42,967 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 231 transitions. [2022-12-13 14:15:42,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:15:42,967 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 231 transitions. [2022-12-13 14:15:42,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-12-13 14:15:42,967 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:15:42,967 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:15:42,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 14:15:42,968 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr58REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-12-13 14:15:42,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:15:42,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1465631939, now seen corresponding path program 1 times [2022-12-13 14:15:42,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:15:42,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817493639] [2022-12-13 14:15:42,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:15:42,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:15:42,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:15:43,343 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 14:15:43,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:15:43,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817493639] [2022-12-13 14:15:43,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817493639] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:15:43,343 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:15:43,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 14:15:43,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825759275] [2022-12-13 14:15:43,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:15:43,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 14:15:43,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:15:43,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 14:15:43,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-12-13 14:15:43,344 INFO L87 Difference]: Start difference. First operand 191 states and 231 transitions. Second operand has 11 states, 10 states have (on average 1.9) internal successors, (19), 11 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:15:43,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:15:43,870 INFO L93 Difference]: Finished difference Result 260 states and 295 transitions. [2022-12-13 14:15:43,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 14:15:43,870 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.9) internal successors, (19), 11 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-12-13 14:15:43,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:15:43,872 INFO L225 Difference]: With dead ends: 260 [2022-12-13 14:15:43,872 INFO L226 Difference]: Without dead ends: 260 [2022-12-13 14:15:43,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2022-12-13 14:15:43,873 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 435 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 676 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 14:15:43,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [435 Valid, 364 Invalid, 692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 676 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 14:15:43,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2022-12-13 14:15:43,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 195. [2022-12-13 14:15:43,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 154 states have (on average 1.5324675324675325) internal successors, (236), 194 states have internal predecessors, (236), 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 14:15:43,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 236 transitions. [2022-12-13 14:15:43,879 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 236 transitions. Word has length 19 [2022-12-13 14:15:43,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:15:43,879 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 236 transitions. [2022-12-13 14:15:43,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.9) internal successors, (19), 11 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:15:43,879 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 236 transitions. [2022-12-13 14:15:43,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-12-13 14:15:43,880 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:15:43,880 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:15:43,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 14:15:43,880 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-12-13 14:15:43,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:15:43,881 INFO L85 PathProgramCache]: Analyzing trace with hash -825042817, now seen corresponding path program 1 times [2022-12-13 14:15:43,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:15:43,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705130932] [2022-12-13 14:15:43,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:15:43,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:15:43,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:15:43,961 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 14:15:43,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:15:43,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705130932] [2022-12-13 14:15:43,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705130932] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:15:43,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:15:43,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 14:15:43,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193043319] [2022-12-13 14:15:43,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:15:43,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 14:15:43,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:15:43,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 14:15:43,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 14:15:43,963 INFO L87 Difference]: Start difference. First operand 195 states and 236 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:15:44,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:15:44,085 INFO L93 Difference]: Finished difference Result 194 states and 234 transitions. [2022-12-13 14:15:44,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 14:15:44,086 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-12-13 14:15:44,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:15:44,087 INFO L225 Difference]: With dead ends: 194 [2022-12-13 14:15:44,087 INFO L226 Difference]: Without dead ends: 194 [2022-12-13 14:15:44,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-13 14:15:44,088 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 7 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 14:15:44,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 302 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 14:15:44,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2022-12-13 14:15:44,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2022-12-13 14:15:44,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 154 states have (on average 1.5194805194805194) internal successors, (234), 193 states have internal predecessors, (234), 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 14:15:44,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 234 transitions. [2022-12-13 14:15:44,094 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 234 transitions. Word has length 19 [2022-12-13 14:15:44,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:15:44,094 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 234 transitions. [2022-12-13 14:15:44,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:15:44,094 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 234 transitions. [2022-12-13 14:15:44,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-12-13 14:15:44,095 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:15:44,095 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:15:44,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 14:15:44,095 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-12-13 14:15:44,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:15:44,095 INFO L85 PathProgramCache]: Analyzing trace with hash -825042816, now seen corresponding path program 1 times [2022-12-13 14:15:44,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:15:44,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165584349] [2022-12-13 14:15:44,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:15:44,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:15:44,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:15:44,197 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 14:15:44,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:15:44,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165584349] [2022-12-13 14:15:44,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165584349] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:15:44,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:15:44,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 14:15:44,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856850204] [2022-12-13 14:15:44,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:15:44,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 14:15:44,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:15:44,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 14:15:44,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 14:15:44,199 INFO L87 Difference]: Start difference. First operand 194 states and 234 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:15:44,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:15:44,349 INFO L93 Difference]: Finished difference Result 193 states and 232 transitions. [2022-12-13 14:15:44,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 14:15:44,349 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-12-13 14:15:44,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:15:44,351 INFO L225 Difference]: With dead ends: 193 [2022-12-13 14:15:44,351 INFO L226 Difference]: Without dead ends: 193 [2022-12-13 14:15:44,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-13 14:15:44,352 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 5 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 14:15:44,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 280 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 14:15:44,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2022-12-13 14:15:44,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2022-12-13 14:15:44,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 154 states have (on average 1.5064935064935066) internal successors, (232), 192 states have internal predecessors, (232), 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 14:15:44,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 232 transitions. [2022-12-13 14:15:44,356 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 232 transitions. Word has length 19 [2022-12-13 14:15:44,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:15:44,356 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 232 transitions. [2022-12-13 14:15:44,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:15:44,356 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 232 transitions. [2022-12-13 14:15:44,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-12-13 14:15:44,356 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:15:44,357 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:15:44,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 14:15:44,357 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr62REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-12-13 14:15:44,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:15:44,357 INFO L85 PathProgramCache]: Analyzing trace with hash -3442432, now seen corresponding path program 1 times [2022-12-13 14:15:44,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:15:44,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254377982] [2022-12-13 14:15:44,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:15:44,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:15:44,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:15:44,426 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 14:15:44,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:15:44,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254377982] [2022-12-13 14:15:44,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254377982] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:15:44,426 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:15:44,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 14:15:44,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271362328] [2022-12-13 14:15:44,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:15:44,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:15:44,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:15:44,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:15:44,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 14:15:44,428 INFO L87 Difference]: Start difference. First operand 193 states and 232 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 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 14:15:44,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:15:44,527 INFO L93 Difference]: Finished difference Result 189 states and 229 transitions. [2022-12-13 14:15:44,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 14:15:44,527 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 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 22 [2022-12-13 14:15:44,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:15:44,528 INFO L225 Difference]: With dead ends: 189 [2022-12-13 14:15:44,529 INFO L226 Difference]: Without dead ends: 189 [2022-12-13 14:15:44,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 14:15:44,529 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 169 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 14:15:44,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 81 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 14:15:44,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2022-12-13 14:15:44,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 185. [2022-12-13 14:15:44,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 153 states have (on average 1.4640522875816993) internal successors, (224), 184 states have internal predecessors, (224), 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 14:15:44,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 224 transitions. [2022-12-13 14:15:44,533 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 224 transitions. Word has length 22 [2022-12-13 14:15:44,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:15:44,533 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 224 transitions. [2022-12-13 14:15:44,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 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 14:15:44,533 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 224 transitions. [2022-12-13 14:15:44,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-12-13 14:15:44,533 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:15:44,533 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:15:44,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 14:15:44,534 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-12-13 14:15:44,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:15:44,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1247328411, now seen corresponding path program 1 times [2022-12-13 14:15:44,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:15:44,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477262296] [2022-12-13 14:15:44,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:15:44,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:15:44,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:15:44,675 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 14:15:44,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:15:44,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477262296] [2022-12-13 14:15:44,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477262296] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:15:44,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:15:44,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 14:15:44,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973993403] [2022-12-13 14:15:44,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:15:44,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 14:15:44,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:15:44,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 14:15:44,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-12-13 14:15:44,676 INFO L87 Difference]: Start difference. First operand 185 states and 224 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 14:15:44,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:15:44,918 INFO L93 Difference]: Finished difference Result 187 states and 226 transitions. [2022-12-13 14:15:44,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 14:15:44,919 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 22 [2022-12-13 14:15:44,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:15:44,920 INFO L225 Difference]: With dead ends: 187 [2022-12-13 14:15:44,920 INFO L226 Difference]: Without dead ends: 187 [2022-12-13 14:15:44,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2022-12-13 14:15:44,921 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 157 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 14:15:44,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 234 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 14:15:44,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2022-12-13 14:15:44,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 184. [2022-12-13 14:15:44,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 153 states have (on average 1.4509803921568627) internal successors, (222), 183 states have internal predecessors, (222), 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 14:15:44,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 222 transitions. [2022-12-13 14:15:44,924 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 222 transitions. Word has length 22 [2022-12-13 14:15:44,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:15:44,925 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 222 transitions. [2022-12-13 14:15:44,925 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 14:15:44,925 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 222 transitions. [2022-12-13 14:15:44,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-12-13 14:15:44,925 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:15:44,925 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:15:44,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 14:15:44,925 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-12-13 14:15:44,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:15:44,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1247328412, now seen corresponding path program 1 times [2022-12-13 14:15:44,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:15:44,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202263784] [2022-12-13 14:15:44,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:15:44,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:15:44,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:15:45,113 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 14:15:45,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:15:45,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202263784] [2022-12-13 14:15:45,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202263784] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:15:45,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:15:45,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 14:15:45,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812632198] [2022-12-13 14:15:45,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:15:45,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 14:15:45,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:15:45,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 14:15:45,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-12-13 14:15:45,115 INFO L87 Difference]: Start difference. First operand 184 states and 222 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 14:15:45,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:15:45,464 INFO L93 Difference]: Finished difference Result 186 states and 224 transitions. [2022-12-13 14:15:45,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 14:15:45,464 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 22 [2022-12-13 14:15:45,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:15:45,465 INFO L225 Difference]: With dead ends: 186 [2022-12-13 14:15:45,465 INFO L226 Difference]: Without dead ends: 186 [2022-12-13 14:15:45,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2022-12-13 14:15:45,466 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 151 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 14:15:45,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 306 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 14:15:45,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2022-12-13 14:15:45,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 183. [2022-12-13 14:15:45,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 153 states have (on average 1.4379084967320261) internal successors, (220), 182 states have internal predecessors, (220), 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 14:15:45,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 220 transitions. [2022-12-13 14:15:45,469 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 220 transitions. Word has length 22 [2022-12-13 14:15:45,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:15:45,469 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 220 transitions. [2022-12-13 14:15:45,470 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 14:15:45,470 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 220 transitions. [2022-12-13 14:15:45,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-12-13 14:15:45,470 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:15:45,470 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:15:45,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 14:15:45,470 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-12-13 14:15:45,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:15:45,470 INFO L85 PathProgramCache]: Analyzing trace with hash -19499741, now seen corresponding path program 1 times [2022-12-13 14:15:45,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:15:45,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201444438] [2022-12-13 14:15:45,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:15:45,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:15:45,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:15:45,528 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 14:15:45,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:15:45,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201444438] [2022-12-13 14:15:45,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201444438] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:15:45,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:15:45,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 14:15:45,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118367966] [2022-12-13 14:15:45,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:15:45,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 14:15:45,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:15:45,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 14:15:45,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 14:15:45,530 INFO L87 Difference]: Start difference. First operand 183 states and 220 transitions. Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 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 14:15:45,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:15:45,656 INFO L93 Difference]: Finished difference Result 182 states and 218 transitions. [2022-12-13 14:15:45,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 14:15:45,657 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 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 14:15:45,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:15:45,658 INFO L225 Difference]: With dead ends: 182 [2022-12-13 14:15:45,658 INFO L226 Difference]: Without dead ends: 182 [2022-12-13 14:15:45,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-13 14:15:45,659 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 7 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 14:15:45,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 271 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 14:15:45,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-12-13 14:15:45,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2022-12-13 14:15:45,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 153 states have (on average 1.4248366013071896) internal successors, (218), 181 states have internal predecessors, (218), 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 14:15:45,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 218 transitions. [2022-12-13 14:15:45,663 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 218 transitions. Word has length 23 [2022-12-13 14:15:45,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:15:45,664 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 218 transitions. [2022-12-13 14:15:45,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 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 14:15:45,664 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 218 transitions. [2022-12-13 14:15:45,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-12-13 14:15:45,664 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:15:45,664 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:15:45,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 14:15:45,664 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr37REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-12-13 14:15:45,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:15:45,665 INFO L85 PathProgramCache]: Analyzing trace with hash -19499740, now seen corresponding path program 1 times [2022-12-13 14:15:45,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:15:45,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843658969] [2022-12-13 14:15:45,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:15:45,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:15:45,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:15:45,758 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 14:15:45,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:15:45,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843658969] [2022-12-13 14:15:45,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843658969] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:15:45,759 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:15:45,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 14:15:45,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847617283] [2022-12-13 14:15:45,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:15:45,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 14:15:45,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:15:45,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 14:15:45,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 14:15:45,760 INFO L87 Difference]: Start difference. First operand 182 states and 218 transitions. Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 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 14:15:45,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:15:45,892 INFO L93 Difference]: Finished difference Result 181 states and 216 transitions. [2022-12-13 14:15:45,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 14:15:45,892 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 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 14:15:45,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:15:45,893 INFO L225 Difference]: With dead ends: 181 [2022-12-13 14:15:45,893 INFO L226 Difference]: Without dead ends: 181 [2022-12-13 14:15:45,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-13 14:15:45,894 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 5 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 14:15:45,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 263 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 14:15:45,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2022-12-13 14:15:45,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2022-12-13 14:15:45,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 153 states have (on average 1.411764705882353) internal successors, (216), 180 states have internal predecessors, (216), 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 14:15:45,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 216 transitions. [2022-12-13 14:15:45,898 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 216 transitions. Word has length 23 [2022-12-13 14:15:45,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:15:45,898 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 216 transitions. [2022-12-13 14:15:45,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 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 14:15:45,899 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 216 transitions. [2022-12-13 14:15:45,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-12-13 14:15:45,899 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:15:45,899 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:15:45,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-13 14:15:45,899 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr74ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-12-13 14:15:45,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:15:45,900 INFO L85 PathProgramCache]: Analyzing trace with hash 998290617, now seen corresponding path program 1 times [2022-12-13 14:15:45,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:15:45,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228275219] [2022-12-13 14:15:45,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:15:45,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:15:45,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:15:46,078 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 14:15:46,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:15:46,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228275219] [2022-12-13 14:15:46,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228275219] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:15:46,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:15:46,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 14:15:46,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952711088] [2022-12-13 14:15:46,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:15:46,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 14:15:46,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:15:46,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 14:15:46,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-12-13 14:15:46,080 INFO L87 Difference]: Start difference. First operand 181 states and 216 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:15:46,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:15:46,515 INFO L93 Difference]: Finished difference Result 234 states and 268 transitions. [2022-12-13 14:15:46,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 14:15:46,515 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-12-13 14:15:46,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:15:46,516 INFO L225 Difference]: With dead ends: 234 [2022-12-13 14:15:46,516 INFO L226 Difference]: Without dead ends: 234 [2022-12-13 14:15:46,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2022-12-13 14:15:46,517 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 349 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 14:15:46,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [349 Valid, 484 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 14:15:46,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2022-12-13 14:15:46,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 194. [2022-12-13 14:15:46,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 166 states have (on average 1.4036144578313252) internal successors, (233), 193 states have internal predecessors, (233), 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 14:15:46,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 233 transitions. [2022-12-13 14:15:46,521 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 233 transitions. Word has length 24 [2022-12-13 14:15:46,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:15:46,521 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 233 transitions. [2022-12-13 14:15:46,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:15:46,522 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 233 transitions. [2022-12-13 14:15:46,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-12-13 14:15:46,522 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:15:46,522 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:15:46,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-13 14:15:46,522 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-12-13 14:15:46,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:15:46,523 INFO L85 PathProgramCache]: Analyzing trace with hash 998278641, now seen corresponding path program 1 times [2022-12-13 14:15:46,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:15:46,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181379145] [2022-12-13 14:15:46,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:15:46,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:15:46,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:15:46,604 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 14:15:46,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:15:46,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181379145] [2022-12-13 14:15:46,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181379145] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:15:46,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:15:46,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 14:15:46,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792763999] [2022-12-13 14:15:46,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:15:46,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 14:15:46,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:15:46,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 14:15:46,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 14:15:46,606 INFO L87 Difference]: Start difference. First operand 194 states and 233 transitions. Second operand has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:15:46,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:15:46,720 INFO L93 Difference]: Finished difference Result 225 states and 270 transitions. [2022-12-13 14:15:46,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 14:15:46,720 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-12-13 14:15:46,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:15:46,721 INFO L225 Difference]: With dead ends: 225 [2022-12-13 14:15:46,721 INFO L226 Difference]: Without dead ends: 225 [2022-12-13 14:15:46,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 14:15:46,722 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 150 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 14:15:46,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 117 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 14:15:46,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2022-12-13 14:15:46,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 172. [2022-12-13 14:15:46,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 150 states have (on average 1.36) internal successors, (204), 171 states have internal predecessors, (204), 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 14:15:46,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 204 transitions. [2022-12-13 14:15:46,724 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 204 transitions. Word has length 24 [2022-12-13 14:15:46,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:15:46,724 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 204 transitions. [2022-12-13 14:15:46,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:15:46,724 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 204 transitions. [2022-12-13 14:15:46,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-12-13 14:15:46,724 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:15:46,724 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:15:46,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-13 14:15:46,724 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr66REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-12-13 14:15:46,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:15:46,725 INFO L85 PathProgramCache]: Analyzing trace with hash 525851589, now seen corresponding path program 1 times [2022-12-13 14:15:46,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:15:46,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744714605] [2022-12-13 14:15:46,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:15:46,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:15:46,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:15:47,238 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 14:15:47,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:15:47,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744714605] [2022-12-13 14:15:47,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744714605] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:15:47,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:15:47,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-13 14:15:47,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576239949] [2022-12-13 14:15:47,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:15:47,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 14:15:47,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:15:47,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 14:15:47,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-12-13 14:15:47,240 INFO L87 Difference]: Start difference. First operand 172 states and 204 transitions. Second operand has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:15:47,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:15:47,836 INFO L93 Difference]: Finished difference Result 242 states and 282 transitions. [2022-12-13 14:15:47,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 14:15:47,836 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-12-13 14:15:47,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:15:47,838 INFO L225 Difference]: With dead ends: 242 [2022-12-13 14:15:47,838 INFO L226 Difference]: Without dead ends: 242 [2022-12-13 14:15:47,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-12-13 14:15:47,839 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 288 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 14:15:47,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 373 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 612 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 14:15:47,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2022-12-13 14:15:47,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 172. [2022-12-13 14:15:47,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 150 states have (on average 1.3466666666666667) internal successors, (202), 171 states have internal predecessors, (202), 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 14:15:47,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 202 transitions. [2022-12-13 14:15:47,841 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 202 transitions. Word has length 25 [2022-12-13 14:15:47,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:15:47,842 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 202 transitions. [2022-12-13 14:15:47,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:15:47,842 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 202 transitions. [2022-12-13 14:15:47,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-12-13 14:15:47,842 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:15:47,842 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:15:47,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-13 14:15:47,842 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-12-13 14:15:47,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:15:47,842 INFO L85 PathProgramCache]: Analyzing trace with hash -896291290, now seen corresponding path program 1 times [2022-12-13 14:15:47,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:15:47,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701408811] [2022-12-13 14:15:47,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:15:47,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:15:47,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:15:48,007 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 14:15:48,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:15:48,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701408811] [2022-12-13 14:15:48,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701408811] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:15:48,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:15:48,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 14:15:48,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143242022] [2022-12-13 14:15:48,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:15:48,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 14:15:48,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:15:48,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 14:15:48,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-12-13 14:15:48,009 INFO L87 Difference]: Start difference. First operand 172 states and 202 transitions. Second operand has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 10 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:15:48,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:15:48,266 INFO L93 Difference]: Finished difference Result 187 states and 220 transitions. [2022-12-13 14:15:48,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 14:15:48,266 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 10 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-12-13 14:15:48,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:15:48,267 INFO L225 Difference]: With dead ends: 187 [2022-12-13 14:15:48,267 INFO L226 Difference]: Without dead ends: 187 [2022-12-13 14:15:48,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2022-12-13 14:15:48,268 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 149 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 14:15:48,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 272 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 14:15:48,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2022-12-13 14:15:48,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 171. [2022-12-13 14:15:48,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 150 states have (on average 1.3333333333333333) internal successors, (200), 170 states have internal predecessors, (200), 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 14:15:48,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 200 transitions. [2022-12-13 14:15:48,270 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 200 transitions. Word has length 25 [2022-12-13 14:15:48,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:15:48,270 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 200 transitions. [2022-12-13 14:15:48,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 10 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:15:48,270 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 200 transitions. [2022-12-13 14:15:48,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-12-13 14:15:48,270 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:15:48,270 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:15:48,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-13 14:15:48,271 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-12-13 14:15:48,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:15:48,271 INFO L85 PathProgramCache]: Analyzing trace with hash -896291289, now seen corresponding path program 1 times [2022-12-13 14:15:48,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:15:48,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003681881] [2022-12-13 14:15:48,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:15:48,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:15:48,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:15:48,548 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 14:15:48,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:15:48,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003681881] [2022-12-13 14:15:48,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003681881] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:15:48,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:15:48,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 14:15:48,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349160296] [2022-12-13 14:15:48,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:15:48,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 14:15:48,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:15:48,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 14:15:48,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-12-13 14:15:48,550 INFO L87 Difference]: Start difference. First operand 171 states and 200 transitions. Second operand has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 10 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:15:48,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:15:48,796 INFO L93 Difference]: Finished difference Result 173 states and 202 transitions. [2022-12-13 14:15:48,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 14:15:48,797 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 10 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-12-13 14:15:48,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:15:48,798 INFO L225 Difference]: With dead ends: 173 [2022-12-13 14:15:48,798 INFO L226 Difference]: Without dead ends: 173 [2022-12-13 14:15:48,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-12-13 14:15:48,799 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 133 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 14:15:48,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 224 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 14:15:48,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-12-13 14:15:48,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 170. [2022-12-13 14:15:48,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 150 states have (on average 1.32) internal successors, (198), 169 states have internal predecessors, (198), 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 14:15:48,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 198 transitions. [2022-12-13 14:15:48,801 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 198 transitions. Word has length 25 [2022-12-13 14:15:48,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:15:48,802 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 198 transitions. [2022-12-13 14:15:48,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 10 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:15:48,802 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 198 transitions. [2022-12-13 14:15:48,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-12-13 14:15:48,802 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:15:48,802 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:15:48,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-13 14:15:48,803 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr40REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-12-13 14:15:48,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:15:48,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1096103808, now seen corresponding path program 1 times [2022-12-13 14:15:48,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:15:48,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272340516] [2022-12-13 14:15:48,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:15:48,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:15:48,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:15:48,928 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 14:15:48,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:15:48,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272340516] [2022-12-13 14:15:48,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272340516] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:15:48,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:15:48,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 14:15:48,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136974209] [2022-12-13 14:15:48,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:15:48,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 14:15:48,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:15:48,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 14:15:48,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-12-13 14:15:48,929 INFO L87 Difference]: Start difference. First operand 170 states and 198 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:15:49,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:15:49,142 INFO L93 Difference]: Finished difference Result 172 states and 201 transitions. [2022-12-13 14:15:49,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 14:15:49,143 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-12-13 14:15:49,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:15:49,144 INFO L225 Difference]: With dead ends: 172 [2022-12-13 14:15:49,144 INFO L226 Difference]: Without dead ends: 172 [2022-12-13 14:15:49,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2022-12-13 14:15:49,145 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 130 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 14:15:49,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 222 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 14:15:49,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2022-12-13 14:15:49,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 169. [2022-12-13 14:15:49,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 150 states have (on average 1.3133333333333332) internal successors, (197), 168 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:15:49,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 197 transitions. [2022-12-13 14:15:49,148 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 197 transitions. Word has length 26 [2022-12-13 14:15:49,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:15:49,148 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 197 transitions. [2022-12-13 14:15:49,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:15:49,148 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 197 transitions. [2022-12-13 14:15:49,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-12-13 14:15:49,149 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:15:49,149 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:15:49,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-12-13 14:15:49,149 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr41REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-12-13 14:15:49,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:15:49,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1096103807, now seen corresponding path program 1 times [2022-12-13 14:15:49,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:15:49,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971588155] [2022-12-13 14:15:49,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:15:49,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:15:49,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:15:49,359 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 14:15:49,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:15:49,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971588155] [2022-12-13 14:15:49,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971588155] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:15:49,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:15:49,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 14:15:49,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316725840] [2022-12-13 14:15:49,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:15:49,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 14:15:49,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:15:49,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 14:15:49,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-12-13 14:15:49,361 INFO L87 Difference]: Start difference. First operand 169 states and 197 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:15:49,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:15:49,637 INFO L93 Difference]: Finished difference Result 171 states and 200 transitions. [2022-12-13 14:15:49,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 14:15:49,637 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-12-13 14:15:49,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:15:49,638 INFO L225 Difference]: With dead ends: 171 [2022-12-13 14:15:49,638 INFO L226 Difference]: Without dead ends: 171 [2022-12-13 14:15:49,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2022-12-13 14:15:49,638 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 124 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 14:15:49,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 303 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 14:15:49,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2022-12-13 14:15:49,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 168. [2022-12-13 14:15:49,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 150 states have (on average 1.3066666666666666) internal successors, (196), 167 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 14:15:49,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 196 transitions. [2022-12-13 14:15:49,640 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 196 transitions. Word has length 26 [2022-12-13 14:15:49,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:15:49,641 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 196 transitions. [2022-12-13 14:15:49,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:15:49,641 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 196 transitions. [2022-12-13 14:15:49,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-12-13 14:15:49,641 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:15:49,641 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:15:49,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-12-13 14:15:49,641 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr50REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-12-13 14:15:49,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:15:49,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1722459940, now seen corresponding path program 1 times [2022-12-13 14:15:49,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:15:49,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245374735] [2022-12-13 14:15:49,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:15:49,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:15:49,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:15:49,732 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:15:49,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:15:49,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245374735] [2022-12-13 14:15:49,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245374735] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:15:49,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447883390] [2022-12-13 14:15:49,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:15:49,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:15:49,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa99a03-d506-4bf1-829a-f4371062457c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:15:49,734 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa99a03-d506-4bf1-829a-f4371062457c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:15:49,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa99a03-d506-4bf1-829a-f4371062457c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 14:15:49,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:15:49,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-13 14:15:49,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:15:49,865 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2022-12-13 14:15:49,869 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2022-12-13 14:15:49,886 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-13 14:15:49,891 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-13 14:15:49,906 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 14:15:49,909 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 14:15:49,949 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:15:49,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:15:50,005 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:15:50,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1447883390] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:15:50,005 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 14:15:50,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2022-12-13 14:15:50,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730217281] [2022-12-13 14:15:50,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 14:15:50,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 14:15:50,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:15:50,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 14:15:50,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 14:15:50,007 INFO L87 Difference]: Start difference. First operand 168 states and 196 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:15:50,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:15:50,082 INFO L93 Difference]: Finished difference Result 174 states and 202 transitions. [2022-12-13 14:15:50,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 14:15:50,083 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-12-13 14:15:50,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:15:50,083 INFO L225 Difference]: With dead ends: 174 [2022-12-13 14:15:50,083 INFO L226 Difference]: Without dead ends: 174 [2022-12-13 14:15:50,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 14:15:50,084 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 12 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 14:15:50,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 341 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 14:15:50,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2022-12-13 14:15:50,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 170. [2022-12-13 14:15:50,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 152 states have (on average 1.3026315789473684) internal successors, (198), 169 states have internal predecessors, (198), 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 14:15:50,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 198 transitions. [2022-12-13 14:15:50,087 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 198 transitions. Word has length 27 [2022-12-13 14:15:50,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:15:50,088 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 198 transitions. [2022-12-13 14:15:50,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:15:50,088 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 198 transitions. [2022-12-13 14:15:50,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-12-13 14:15:50,088 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:15:50,088 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:15:50,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa99a03-d506-4bf1-829a-f4371062457c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 14:15:50,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa99a03-d506-4bf1-829a-f4371062457c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-12-13 14:15:50,290 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr76ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-12-13 14:15:50,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:15:50,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1856650752, now seen corresponding path program 1 times [2022-12-13 14:15:50,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:15:50,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671783260] [2022-12-13 14:15:50,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:15:50,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:15:50,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:15:50,654 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:15:50,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:15:50,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671783260] [2022-12-13 14:15:50,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671783260] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:15:50,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078140890] [2022-12-13 14:15:50,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:15:50,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:15:50,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa99a03-d506-4bf1-829a-f4371062457c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:15:50,655 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa99a03-d506-4bf1-829a-f4371062457c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:15:50,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa99a03-d506-4bf1-829a-f4371062457c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 14:15:50,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:15:50,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 30 conjunts are in the unsatisfiable core [2022-12-13 14:15:50,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:15:50,871 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2022-12-13 14:15:50,982 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 14:15:50,982 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 34 [2022-12-13 14:15:51,164 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-13 14:15:51,164 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 34 [2022-12-13 14:15:51,263 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~n~0#1.base| Int) (|ULTIMATE.start_main_~st~0#1.base| Int) (v_DerPreprocessor_2 Int)) (let ((.cse0 (store (store (store |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_main_~st~0#1.base| 0) |ULTIMATE.start_main_~n~0#1.base| v_DerPreprocessor_2) |ULTIMATE.start_main_~st~0#1.base| 0))) (and (= |c_#valid| (store .cse0 |ULTIMATE.start_main_~n~0#1.base| 0)) (= (select |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_main_~n~0#1.base|) 0) (= (select |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_main_~st~0#1.base|) 0) (= v_DerPreprocessor_2 (select .cse0 |ULTIMATE.start_main_~n~0#1.base|))))) is different from true [2022-12-13 14:15:51,281 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-12-13 14:15:51,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:15:51,412 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2022-12-13 14:15:51,415 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 36 [2022-12-13 14:16:23,612 WARN L233 SmtUtils]: Spent 30.11s on a formula simplification. DAG size of input: 25 DAG size of output: 22 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 14:16:23,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:16:23,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078140890] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:16:23,748 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 14:16:23,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 24 [2022-12-13 14:16:23,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784963085] [2022-12-13 14:16:23,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 14:16:23,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-13 14:16:23,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:16:23,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-13 14:16:23,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=485, Unknown=2, NotChecked=44, Total=600 [2022-12-13 14:16:23,749 INFO L87 Difference]: Start difference. First operand 170 states and 198 transitions. Second operand has 25 states, 24 states have (on average 2.875) internal successors, (69), 25 states have internal predecessors, (69), 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 14:16:24,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:16:24,935 INFO L93 Difference]: Finished difference Result 211 states and 242 transitions. [2022-12-13 14:16:24,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 14:16:24,935 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.875) internal successors, (69), 25 states have internal predecessors, (69), 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 28 [2022-12-13 14:16:24,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:16:24,937 INFO L225 Difference]: With dead ends: 211 [2022-12-13 14:16:24,937 INFO L226 Difference]: Without dead ends: 205 [2022-12-13 14:16:24,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 1 IntricatePredicates, 2 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 33.0s TimeCoverageRelationStatistics Valid=151, Invalid=907, Unknown=2, NotChecked=62, Total=1122 [2022-12-13 14:16:24,938 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 108 mSDsluCounter, 631 mSDsCounter, 0 mSdLazyCounter, 938 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 1090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 138 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-13 14:16:24,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 704 Invalid, 1090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 938 Invalid, 0 Unknown, 138 Unchecked, 0.8s Time] [2022-12-13 14:16:24,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2022-12-13 14:16:24,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 185. [2022-12-13 14:16:24,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 167 states have (on average 1.281437125748503) internal successors, (214), 184 states have internal predecessors, (214), 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 14:16:24,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 214 transitions. [2022-12-13 14:16:24,942 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 214 transitions. Word has length 28 [2022-12-13 14:16:24,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:16:24,942 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 214 transitions. [2022-12-13 14:16:24,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.875) internal successors, (69), 25 states have internal predecessors, (69), 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 14:16:24,942 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 214 transitions. [2022-12-13 14:16:24,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-12-13 14:16:24,943 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:16:24,943 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:16:24,950 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa99a03-d506-4bf1-829a-f4371062457c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 14:16:25,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa99a03-d506-4bf1-829a-f4371062457c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:16:25,145 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr44REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-12-13 14:16:25,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:16:25,146 INFO L85 PathProgramCache]: Analyzing trace with hash 607909674, now seen corresponding path program 1 times [2022-12-13 14:16:25,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:16:25,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061763661] [2022-12-13 14:16:25,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:16:25,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:16:25,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:16:25,349 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 14:16:25,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:16:25,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061763661] [2022-12-13 14:16:25,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061763661] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:16:25,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:16:25,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 14:16:25,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9412501] [2022-12-13 14:16:25,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:16:25,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 14:16:25,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:16:25,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 14:16:25,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-12-13 14:16:25,351 INFO L87 Difference]: Start difference. First operand 185 states and 214 transitions. Second operand has 10 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 10 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:16:25,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:16:25,580 INFO L93 Difference]: Finished difference Result 190 states and 221 transitions. [2022-12-13 14:16:25,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 14:16:25,580 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 10 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-12-13 14:16:25,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:16:25,581 INFO L225 Difference]: With dead ends: 190 [2022-12-13 14:16:25,581 INFO L226 Difference]: Without dead ends: 190 [2022-12-13 14:16:25,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2022-12-13 14:16:25,582 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 127 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 14:16:25,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 269 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 14:16:25,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2022-12-13 14:16:25,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 184. [2022-12-13 14:16:25,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 167 states have (on average 1.2754491017964071) internal successors, (213), 183 states have internal predecessors, (213), 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 14:16:25,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 213 transitions. [2022-12-13 14:16:25,585 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 213 transitions. Word has length 29 [2022-12-13 14:16:25,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:16:25,585 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 213 transitions. [2022-12-13 14:16:25,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 10 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:16:25,586 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 213 transitions. [2022-12-13 14:16:25,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-12-13 14:16:25,586 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:16:25,586 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:16:25,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-12-13 14:16:25,586 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr45REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-12-13 14:16:25,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:16:25,587 INFO L85 PathProgramCache]: Analyzing trace with hash 607909675, now seen corresponding path program 1 times [2022-12-13 14:16:25,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:16:25,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088347455] [2022-12-13 14:16:25,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:16:25,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:16:25,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:16:25,941 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 14:16:25,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:16:25,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088347455] [2022-12-13 14:16:25,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088347455] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:16:25,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:16:25,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 14:16:25,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818535043] [2022-12-13 14:16:25,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:16:25,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 14:16:25,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:16:25,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 14:16:25,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-12-13 14:16:25,942 INFO L87 Difference]: Start difference. First operand 184 states and 213 transitions. Second operand has 11 states, 10 states have (on average 2.9) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:16:26,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:16:26,405 INFO L93 Difference]: Finished difference Result 230 states and 266 transitions. [2022-12-13 14:16:26,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 14:16:26,405 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.9) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-12-13 14:16:26,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:16:26,406 INFO L225 Difference]: With dead ends: 230 [2022-12-13 14:16:26,406 INFO L226 Difference]: Without dead ends: 230 [2022-12-13 14:16:26,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2022-12-13 14:16:26,407 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 267 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 14:16:26,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 349 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 14:16:26,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-12-13 14:16:26,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 215. [2022-12-13 14:16:26,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 198 states have (on average 1.2575757575757576) internal successors, (249), 214 states have internal predecessors, (249), 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 14:16:26,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 249 transitions. [2022-12-13 14:16:26,409 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 249 transitions. Word has length 29 [2022-12-13 14:16:26,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:16:26,409 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 249 transitions. [2022-12-13 14:16:26,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.9) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:16:26,410 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 249 transitions. [2022-12-13 14:16:26,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-12-13 14:16:26,410 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:16:26,410 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:16:26,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-12-13 14:16:26,410 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr50REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-12-13 14:16:26,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:16:26,410 INFO L85 PathProgramCache]: Analyzing trace with hash 997305066, now seen corresponding path program 1 times [2022-12-13 14:16:26,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:16:26,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890401935] [2022-12-13 14:16:26,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:16:26,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:16:26,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:16:26,478 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:16:26,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:16:26,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890401935] [2022-12-13 14:16:26,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890401935] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:16:26,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:16:26,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 14:16:26,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196775234] [2022-12-13 14:16:26,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:16:26,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 14:16:26,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:16:26,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 14:16:26,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 14:16:26,480 INFO L87 Difference]: Start difference. First operand 215 states and 249 transitions. Second operand has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:16:26,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:16:26,646 INFO L93 Difference]: Finished difference Result 232 states and 261 transitions. [2022-12-13 14:16:26,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 14:16:26,646 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-12-13 14:16:26,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:16:26,647 INFO L225 Difference]: With dead ends: 232 [2022-12-13 14:16:26,647 INFO L226 Difference]: Without dead ends: 232 [2022-12-13 14:16:26,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-12-13 14:16:26,648 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 117 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 14:16:26,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 203 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 14:16:26,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2022-12-13 14:16:26,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 215. [2022-12-13 14:16:26,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 198 states have (on average 1.2474747474747474) internal successors, (247), 214 states have internal predecessors, (247), 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 14:16:26,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 247 transitions. [2022-12-13 14:16:26,651 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 247 transitions. Word has length 31 [2022-12-13 14:16:26,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:16:26,651 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 247 transitions. [2022-12-13 14:16:26,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:16:26,652 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 247 transitions. [2022-12-13 14:16:26,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-12-13 14:16:26,652 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:16:26,652 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:16:26,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-12-13 14:16:26,652 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr76ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-12-13 14:16:26,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:16:26,653 INFO L85 PathProgramCache]: Analyzing trace with hash 851686138, now seen corresponding path program 1 times [2022-12-13 14:16:26,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:16:26,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31907471] [2022-12-13 14:16:26,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:16:26,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:16:26,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:16:26,696 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:16:26,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:16:26,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31907471] [2022-12-13 14:16:26,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31907471] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:16:26,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:16:26,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 14:16:26,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15988509] [2022-12-13 14:16:26,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:16:26,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:16:26,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:16:26,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:16:26,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 14:16:26,698 INFO L87 Difference]: Start difference. First operand 215 states and 247 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:16:26,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:16:26,738 INFO L93 Difference]: Finished difference Result 243 states and 273 transitions. [2022-12-13 14:16:26,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 14:16:26,738 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-12-13 14:16:26,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:16:26,739 INFO L225 Difference]: With dead ends: 243 [2022-12-13 14:16:26,739 INFO L226 Difference]: Without dead ends: 243 [2022-12-13 14:16:26,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 14:16:26,740 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 44 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 14:16:26,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 262 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 14:16:26,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2022-12-13 14:16:26,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 215. [2022-12-13 14:16:26,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 198 states have (on average 1.2424242424242424) internal successors, (246), 214 states have internal predecessors, (246), 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 14:16:26,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 246 transitions. [2022-12-13 14:16:26,743 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 246 transitions. Word has length 32 [2022-12-13 14:16:26,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:16:26,744 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 246 transitions. [2022-12-13 14:16:26,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:16:26,744 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 246 transitions. [2022-12-13 14:16:26,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-12-13 14:16:26,744 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:16:26,744 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:16:26,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-12-13 14:16:26,744 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr57REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-12-13 14:16:26,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:16:26,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1155721340, now seen corresponding path program 1 times [2022-12-13 14:16:26,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:16:26,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336131868] [2022-12-13 14:16:26,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:16:26,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:16:26,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:16:27,292 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:16:27,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:16:27,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336131868] [2022-12-13 14:16:27,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336131868] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:16:27,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:16:27,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-12-13 14:16:27,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767194353] [2022-12-13 14:16:27,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:16:27,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-13 14:16:27,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:16:27,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-13 14:16:27,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-12-13 14:16:27,294 INFO L87 Difference]: Start difference. First operand 215 states and 246 transitions. Second operand has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 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 14:16:28,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:16:28,010 INFO L93 Difference]: Finished difference Result 244 states and 276 transitions. [2022-12-13 14:16:28,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-13 14:16:28,010 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 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 38 [2022-12-13 14:16:28,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:16:28,011 INFO L225 Difference]: With dead ends: 244 [2022-12-13 14:16:28,011 INFO L226 Difference]: Without dead ends: 237 [2022-12-13 14:16:28,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=180, Invalid=750, Unknown=0, NotChecked=0, Total=930 [2022-12-13 14:16:28,012 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 294 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 14:16:28,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 447 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 14:16:28,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2022-12-13 14:16:28,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 213. [2022-12-13 14:16:28,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 196 states have (on average 1.239795918367347) internal successors, (243), 212 states have internal predecessors, (243), 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 14:16:28,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 243 transitions. [2022-12-13 14:16:28,014 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 243 transitions. Word has length 38 [2022-12-13 14:16:28,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:16:28,014 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 243 transitions. [2022-12-13 14:16:28,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 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 14:16:28,015 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 243 transitions. [2022-12-13 14:16:28,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-12-13 14:16:28,015 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:16:28,015 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:16:28,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-12-13 14:16:28,015 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr57REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-12-13 14:16:28,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:16:28,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1546128188, now seen corresponding path program 1 times [2022-12-13 14:16:28,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:16:28,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490542584] [2022-12-13 14:16:28,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:16:28,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:16:28,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:16:28,701 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:16:28,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:16:28,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490542584] [2022-12-13 14:16:28,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490542584] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:16:28,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:16:28,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-13 14:16:28,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905559454] [2022-12-13 14:16:28,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:16:28,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-13 14:16:28,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:16:28,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-13 14:16:28,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-12-13 14:16:28,702 INFO L87 Difference]: Start difference. First operand 213 states and 243 transitions. Second operand has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 14 states have internal predecessors, (38), 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 14:16:29,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:16:29,431 INFO L93 Difference]: Finished difference Result 230 states and 260 transitions. [2022-12-13 14:16:29,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-13 14:16:29,431 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 14 states have internal predecessors, (38), 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 38 [2022-12-13 14:16:29,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:16:29,432 INFO L225 Difference]: With dead ends: 230 [2022-12-13 14:16:29,432 INFO L226 Difference]: Without dead ends: 204 [2022-12-13 14:16:29,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=158, Invalid=712, Unknown=0, NotChecked=0, Total=870 [2022-12-13 14:16:29,432 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 348 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 14:16:29,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [348 Valid, 527 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 648 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 14:16:29,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2022-12-13 14:16:29,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 200. [2022-12-13 14:16:29,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 183 states have (on average 1.2513661202185793) internal successors, (229), 199 states have internal predecessors, (229), 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 14:16:29,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 229 transitions. [2022-12-13 14:16:29,434 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 229 transitions. Word has length 38 [2022-12-13 14:16:29,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:16:29,434 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 229 transitions. [2022-12-13 14:16:29,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 14 states have internal predecessors, (38), 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 14:16:29,434 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 229 transitions. [2022-12-13 14:16:29,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-12-13 14:16:29,435 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:16:29,435 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:16:29,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-12-13 14:16:29,435 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-12-13 14:16:29,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:16:29,435 INFO L85 PathProgramCache]: Analyzing trace with hash -936117449, now seen corresponding path program 1 times [2022-12-13 14:16:29,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:16:29,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636208742] [2022-12-13 14:16:29,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:16:29,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:16:29,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:16:29,879 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:16:29,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:16:29,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636208742] [2022-12-13 14:16:29,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636208742] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:16:29,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929428239] [2022-12-13 14:16:29,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:16:29,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:16:29,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa99a03-d506-4bf1-829a-f4371062457c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:16:29,880 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa99a03-d506-4bf1-829a-f4371062457c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:16:29,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa99a03-d506-4bf1-829a-f4371062457c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 14:16:29,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:16:29,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 58 conjunts are in the unsatisfiable core [2022-12-13 14:16:29,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:16:30,005 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-12-13 14:16:30,311 INFO L321 Elim1Store]: treesize reduction 26, result has 27.8 percent of original size [2022-12-13 14:16:30,311 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 29 [2022-12-13 14:16:30,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:16:30,369 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-13 14:16:30,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:16:30,378 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-13 14:16:30,550 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-13 14:16:30,551 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 49 [2022-12-13 14:16:30,561 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-12-13 14:16:30,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:16:30,685 INFO L321 Elim1Store]: treesize reduction 54, result has 23.9 percent of original size [2022-12-13 14:16:30,685 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 65 treesize of output 46 [2022-12-13 14:16:30,694 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-12-13 14:16:30,867 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-12-13 14:16:30,868 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 78 treesize of output 65 [2022-12-13 14:16:30,879 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 14:16:30,879 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 14 [2022-12-13 14:16:30,887 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-12-13 14:16:30,980 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2022-12-13 14:16:30,982 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 14:16:30,987 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:16:30,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:16:34,962 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 14:16:34,962 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 497 treesize of output 328 [2022-12-13 14:16:35,021 INFO L321 Elim1Store]: treesize reduction 20, result has 61.5 percent of original size [2022-12-13 14:16:35,021 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 1941 treesize of output 1751 [2022-12-13 14:16:35,064 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1851 treesize of output 1659 [2022-12-13 14:16:35,305 INFO L321 Elim1Store]: treesize reduction 128, result has 43.9 percent of original size [2022-12-13 14:16:35,306 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 16 case distinctions, treesize of input 21963 treesize of output 19474 [2022-12-13 14:16:35,750 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 14:16:35,751 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21109 treesize of output 17765 [2022-12-13 14:16:36,528 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 14:16:36,529 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 17696 treesize of output 17776 [2022-12-13 14:16:36,753 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17618 treesize of output 17480