./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/heap-manipulation/dll_of_dll-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 5e519f3a 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_daa45ca8-f21e-4958-8f82-aeb57b29eaa1/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa45ca8-f21e-4958-8f82-aeb57b29eaa1/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa45ca8-f21e-4958-8f82-aeb57b29eaa1/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa45ca8-f21e-4958-8f82-aeb57b29eaa1/bin/uautomizer-Dbtcem3rbc/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/heap-manipulation/dll_of_dll-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa45ca8-f21e-4958-8f82-aeb57b29eaa1/bin/uautomizer-Dbtcem3rbc/config/svcomp-MemCleanup-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa45ca8-f21e-4958-8f82-aeb57b29eaa1/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0eca46c14885d62179341dcc13b398752af03e020a80dcf533f4c9afc7372707 --- 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-5e519f3 [2022-11-02 20:14:35,208 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:14:35,216 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:14:35,267 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:14:35,268 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:14:35,270 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:14:35,272 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:14:35,274 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:14:35,276 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:14:35,277 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:14:35,278 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:14:35,280 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:14:35,280 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:14:35,281 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:14:35,283 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:14:35,284 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:14:35,285 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:14:35,287 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:14:35,289 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:14:35,291 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:14:35,293 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:14:35,304 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:14:35,305 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:14:35,307 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:14:35,312 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:14:35,317 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:14:35,318 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:14:35,319 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:14:35,321 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:14:35,323 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:14:35,324 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:14:35,325 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:14:35,327 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:14:35,329 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:14:35,331 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:14:35,332 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:14:35,333 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:14:35,333 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:14:35,334 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:14:35,335 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:14:35,336 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:14:35,340 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa45ca8-f21e-4958-8f82-aeb57b29eaa1/bin/uautomizer-Dbtcem3rbc/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2022-11-02 20:14:35,385 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:14:35,385 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:14:35,386 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:14:35,386 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:14:35,387 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:14:35,387 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:14:35,388 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:14:35,388 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:14:35,388 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:14:35,388 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:14:35,389 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:14:35,389 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 20:14:35,389 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:14:35,389 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:14:35,390 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:14:35,390 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-02 20:14:35,390 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-02 20:14:35,390 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:14:35,390 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 20:14:35,394 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:14:35,394 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:14:35,394 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:14:35,394 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:14:35,395 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:14:35,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:14:35,396 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:14:35,397 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:14:35,398 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:14:35,399 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:14:35,399 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa45ca8-f21e-4958-8f82-aeb57b29eaa1/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa45ca8-f21e-4958-8f82-aeb57b29eaa1/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0eca46c14885d62179341dcc13b398752af03e020a80dcf533f4c9afc7372707 [2022-11-02 20:14:35,805 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:14:35,851 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:14:35,854 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:14:35,857 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:14:35,860 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:14:35,862 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa45ca8-f21e-4958-8f82-aeb57b29eaa1/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/heap-manipulation/dll_of_dll-2.i [2022-11-02 20:14:35,951 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa45ca8-f21e-4958-8f82-aeb57b29eaa1/bin/uautomizer-Dbtcem3rbc/data/866595851/edc88f4a6436417b8c018877754cf92d/FLAG272ed0bb3 [2022-11-02 20:14:36,750 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:14:36,757 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa45ca8-f21e-4958-8f82-aeb57b29eaa1/sv-benchmarks/c/heap-manipulation/dll_of_dll-2.i [2022-11-02 20:14:36,780 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa45ca8-f21e-4958-8f82-aeb57b29eaa1/bin/uautomizer-Dbtcem3rbc/data/866595851/edc88f4a6436417b8c018877754cf92d/FLAG272ed0bb3 [2022-11-02 20:14:36,957 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa45ca8-f21e-4958-8f82-aeb57b29eaa1/bin/uautomizer-Dbtcem3rbc/data/866595851/edc88f4a6436417b8c018877754cf92d [2022-11-02 20:14:36,960 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:14:36,962 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:14:36,966 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:14:36,966 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:14:36,971 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:14:36,972 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:14:36" (1/1) ... [2022-11-02 20:14:36,973 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@da1c1b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:14:36, skipping insertion in model container [2022-11-02 20:14:36,974 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:14:36" (1/1) ... [2022-11-02 20:14:36,983 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:14:37,052 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:14:37,431 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa45ca8-f21e-4958-8f82-aeb57b29eaa1/sv-benchmarks/c/heap-manipulation/dll_of_dll-2.i[22634,22647] [2022-11-02 20:14:37,518 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:14:37,539 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:14:37,610 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa45ca8-f21e-4958-8f82-aeb57b29eaa1/sv-benchmarks/c/heap-manipulation/dll_of_dll-2.i[22634,22647] [2022-11-02 20:14:37,644 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:14:37,677 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:14:37,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:14:37 WrapperNode [2022-11-02 20:14:37,678 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:14:37,679 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:14:37,679 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:14:37,680 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:14:37,688 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:14:37" (1/1) ... [2022-11-02 20:14:37,708 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:14:37" (1/1) ... [2022-11-02 20:14:37,744 INFO L138 Inliner]: procedures = 140, calls = 94, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 234 [2022-11-02 20:14:37,744 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:14:37,745 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:14:37,745 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:14:37,746 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:14:37,757 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:14:37" (1/1) ... [2022-11-02 20:14:37,757 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:14:37" (1/1) ... [2022-11-02 20:14:37,764 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:14:37" (1/1) ... [2022-11-02 20:14:37,765 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:14:37" (1/1) ... [2022-11-02 20:14:37,781 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:14:37" (1/1) ... [2022-11-02 20:14:37,790 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:14:37" (1/1) ... [2022-11-02 20:14:37,793 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:14:37" (1/1) ... [2022-11-02 20:14:37,795 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:14:37" (1/1) ... [2022-11-02 20:14:37,800 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:14:37,801 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:14:37,801 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:14:37,802 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:14:37,803 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:14:37" (1/1) ... [2022-11-02 20:14:37,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:14:37,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa45ca8-f21e-4958-8f82-aeb57b29eaa1/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:14:37,865 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa45ca8-f21e-4958-8f82-aeb57b29eaa1/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:14:37,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa45ca8-f21e-4958-8f82-aeb57b29eaa1/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:14:37,909 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2022-11-02 20:14:37,910 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2022-11-02 20:14:37,910 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2022-11-02 20:14:37,910 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2022-11-02 20:14:37,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 20:14:37,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:14:37,911 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2022-11-02 20:14:37,911 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2022-11-02 20:14:37,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:14:37,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-02 20:14:37,912 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-02 20:14:37,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-02 20:14:37,912 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-02 20:14:37,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:14:37,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-02 20:14:37,912 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2022-11-02 20:14:37,913 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2022-11-02 20:14:37,913 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2022-11-02 20:14:37,913 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2022-11-02 20:14:37,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:14:37,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:14:37,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:14:38,112 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:14:38,115 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:14:39,012 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:14:39,022 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:14:39,022 INFO L300 CfgBuilder]: Removed 38 assume(true) statements. [2022-11-02 20:14:39,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:14:39 BoogieIcfgContainer [2022-11-02 20:14:39,026 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:14:39,028 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:14:39,029 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:14:39,038 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:14:39,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:14:36" (1/3) ... [2022-11-02 20:14:39,040 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f4ca666 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:14:39, skipping insertion in model container [2022-11-02 20:14:39,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:14:37" (2/3) ... [2022-11-02 20:14:39,040 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f4ca666 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:14:39, skipping insertion in model container [2022-11-02 20:14:39,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:14:39" (3/3) ... [2022-11-02 20:14:39,042 INFO L112 eAbstractionObserver]: Analyzing ICFG dll_of_dll-2.i [2022-11-02 20:14:39,067 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:14:39,067 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 98 error locations. [2022-11-02 20:14:39,132 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:14:39,141 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1014a0dd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:14:39,141 INFO L358 AbstractCegarLoop]: Starting to check reachability of 98 error locations. [2022-11-02 20:14:39,147 INFO L276 IsEmpty]: Start isEmpty. Operand has 271 states, 142 states have (on average 2.1619718309859155) internal successors, (307), 259 states have internal predecessors, (307), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2022-11-02 20:14:39,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 20:14:39,157 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:39,158 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:39,159 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ##fun~$Pointer$~TO~VOIDErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [dll_insert_masterErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 95 more)] === [2022-11-02 20:14:39,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:39,165 INFO L85 PathProgramCache]: Analyzing trace with hash -853608627, now seen corresponding path program 1 times [2022-11-02 20:14:39,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:39,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016481888] [2022-11-02 20:14:39,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:39,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:39,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:39,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:39,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:14:39,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016481888] [2022-11-02 20:14:39,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016481888] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:39,473 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:39,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:14:39,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755859065] [2022-11-02 20:14:39,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:39,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:14:39,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:14:39,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:14:39,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:14:39,536 INFO L87 Difference]: Start difference. First operand has 271 states, 142 states have (on average 2.1619718309859155) internal successors, (307), 259 states have internal predecessors, (307), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:39,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:39,614 INFO L93 Difference]: Finished difference Result 269 states and 299 transitions. [2022-11-02 20:14:39,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:14:39,618 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-02 20:14:39,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:39,649 INFO L225 Difference]: With dead ends: 269 [2022-11-02 20:14:39,650 INFO L226 Difference]: Without dead ends: 267 [2022-11-02 20:14:39,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:14:39,657 INFO L413 NwaCegarLoop]: 299 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:39,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:14:39,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2022-11-02 20:14:39,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2022-11-02 20:14:39,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 140 states have (on average 1.8785714285714286) internal successors, (263), 255 states have internal predecessors, (263), 24 states have call successors, (24), 6 states have call predecessors, (24), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-02 20:14:39,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 297 transitions. [2022-11-02 20:14:39,788 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 297 transitions. Word has length 9 [2022-11-02 20:14:39,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:39,789 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 297 transitions. [2022-11-02 20:14:39,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:39,791 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 297 transitions. [2022-11-02 20:14:39,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 20:14:39,792 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:39,792 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:39,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:14:39,793 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ##fun~$Pointer$~TO~VOIDErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [dll_insert_masterErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 95 more)] === [2022-11-02 20:14:39,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:39,795 INFO L85 PathProgramCache]: Analyzing trace with hash -853608565, now seen corresponding path program 1 times [2022-11-02 20:14:39,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:39,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378115465] [2022-11-02 20:14:39,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:39,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:39,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:39,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:39,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:14:39,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378115465] [2022-11-02 20:14:39,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378115465] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:39,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:39,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:14:39,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113480468] [2022-11-02 20:14:39,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:39,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:14:39,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:14:39,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:14:39,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:14:39,985 INFO L87 Difference]: Start difference. First operand 267 states and 297 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:40,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:40,210 INFO L93 Difference]: Finished difference Result 267 states and 299 transitions. [2022-11-02 20:14:40,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:14:40,211 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-02 20:14:40,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:40,213 INFO L225 Difference]: With dead ends: 267 [2022-11-02 20:14:40,214 INFO L226 Difference]: Without dead ends: 267 [2022-11-02 20:14:40,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:14:40,216 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 23 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:40,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 463 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:14:40,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2022-11-02 20:14:40,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 265. [2022-11-02 20:14:40,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 140 states have (on average 1.8642857142857143) internal successors, (261), 253 states have internal predecessors, (261), 24 states have call successors, (24), 6 states have call predecessors, (24), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-02 20:14:40,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 295 transitions. [2022-11-02 20:14:40,237 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 295 transitions. Word has length 9 [2022-11-02 20:14:40,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:40,237 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 295 transitions. [2022-11-02 20:14:40,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:40,238 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 295 transitions. [2022-11-02 20:14:40,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 20:14:40,239 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:40,239 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:40,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:14:40,240 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ##fun~$Pointer$~TO~VOIDErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [dll_insert_masterErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 95 more)] === [2022-11-02 20:14:40,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:40,241 INFO L85 PathProgramCache]: Analyzing trace with hash -853608564, now seen corresponding path program 1 times [2022-11-02 20:14:40,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:40,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850109187] [2022-11-02 20:14:40,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:40,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:40,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:40,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:40,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:14:40,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850109187] [2022-11-02 20:14:40,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850109187] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:40,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:40,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:14:40,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358175172] [2022-11-02 20:14:40,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:40,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:14:40,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:14:40,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:14:40,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:14:40,581 INFO L87 Difference]: Start difference. First operand 265 states and 295 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:40,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:40,709 INFO L93 Difference]: Finished difference Result 291 states and 329 transitions. [2022-11-02 20:14:40,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:14:40,710 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-02 20:14:40,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:40,713 INFO L225 Difference]: With dead ends: 291 [2022-11-02 20:14:40,713 INFO L226 Difference]: Without dead ends: 291 [2022-11-02 20:14:40,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:14:40,715 INFO L413 NwaCegarLoop]: 313 mSDtfsCounter, 19 mSDsluCounter, 892 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 1205 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:40,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 1205 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:14:40,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2022-11-02 20:14:40,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 283. [2022-11-02 20:14:40,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 151 states have (on average 1.8278145695364238) internal successors, (276), 264 states have internal predecessors, (276), 29 states have call successors, (29), 8 states have call predecessors, (29), 7 states have return successors, (18), 13 states have call predecessors, (18), 15 states have call successors, (18) [2022-11-02 20:14:40,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 323 transitions. [2022-11-02 20:14:40,733 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 323 transitions. Word has length 9 [2022-11-02 20:14:40,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:40,733 INFO L495 AbstractCegarLoop]: Abstraction has 283 states and 323 transitions. [2022-11-02 20:14:40,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:40,734 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 323 transitions. [2022-11-02 20:14:40,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 20:14:40,735 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:40,735 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:40,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:14:40,736 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting dll_insert_masterErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [dll_insert_masterErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 95 more)] === [2022-11-02 20:14:40,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:40,737 INFO L85 PathProgramCache]: Analyzing trace with hash 33414869, now seen corresponding path program 1 times [2022-11-02 20:14:40,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:40,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724080669] [2022-11-02 20:14:40,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:40,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:40,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:40,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:40,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:14:40,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724080669] [2022-11-02 20:14:40,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724080669] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:40,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:40,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:14:40,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242869539] [2022-11-02 20:14:40,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:40,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:14:40,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:14:40,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:14:40,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:14:40,816 INFO L87 Difference]: Start difference. First operand 283 states and 323 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:41,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:41,036 INFO L93 Difference]: Finished difference Result 280 states and 320 transitions. [2022-11-02 20:14:41,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:14:41,037 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-02 20:14:41,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:41,039 INFO L225 Difference]: With dead ends: 280 [2022-11-02 20:14:41,040 INFO L226 Difference]: Without dead ends: 280 [2022-11-02 20:14:41,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:14:41,052 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 20 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:41,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 460 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:14:41,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2022-11-02 20:14:41,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2022-11-02 20:14:41,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 151 states have (on average 1.8079470198675496) internal successors, (273), 261 states have internal predecessors, (273), 29 states have call successors, (29), 8 states have call predecessors, (29), 7 states have return successors, (18), 13 states have call predecessors, (18), 15 states have call successors, (18) [2022-11-02 20:14:41,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 320 transitions. [2022-11-02 20:14:41,081 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 320 transitions. Word has length 11 [2022-11-02 20:14:41,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:41,081 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 320 transitions. [2022-11-02 20:14:41,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:41,082 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 320 transitions. [2022-11-02 20:14:41,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 20:14:41,083 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:41,083 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:41,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:14:41,084 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting dll_insert_masterErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [dll_insert_masterErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 95 more)] === [2022-11-02 20:14:41,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:41,085 INFO L85 PathProgramCache]: Analyzing trace with hash 33414870, now seen corresponding path program 1 times [2022-11-02 20:14:41,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:41,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590700137] [2022-11-02 20:14:41,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:41,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:41,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:41,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:41,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:14:41,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590700137] [2022-11-02 20:14:41,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590700137] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:41,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:41,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:14:41,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803610390] [2022-11-02 20:14:41,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:41,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:14:41,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:14:41,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:14:41,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:14:41,247 INFO L87 Difference]: Start difference. First operand 280 states and 320 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:41,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:41,431 INFO L93 Difference]: Finished difference Result 277 states and 317 transitions. [2022-11-02 20:14:41,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:14:41,433 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-02 20:14:41,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:41,440 INFO L225 Difference]: With dead ends: 277 [2022-11-02 20:14:41,440 INFO L226 Difference]: Without dead ends: 277 [2022-11-02 20:14:41,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:14:41,446 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 17 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:41,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 465 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:14:41,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2022-11-02 20:14:41,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 277. [2022-11-02 20:14:41,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 151 states have (on average 1.7880794701986755) internal successors, (270), 258 states have internal predecessors, (270), 29 states have call successors, (29), 8 states have call predecessors, (29), 7 states have return successors, (18), 13 states have call predecessors, (18), 15 states have call successors, (18) [2022-11-02 20:14:41,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 317 transitions. [2022-11-02 20:14:41,478 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 317 transitions. Word has length 11 [2022-11-02 20:14:41,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:41,481 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 317 transitions. [2022-11-02 20:14:41,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:41,481 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 317 transitions. [2022-11-02 20:14:41,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-02 20:14:41,482 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:41,482 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:41,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:14:41,483 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting dll_insert_masterErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [dll_insert_masterErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 95 more)] === [2022-11-02 20:14:41,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:41,484 INFO L85 PathProgramCache]: Analyzing trace with hash -226556130, now seen corresponding path program 1 times [2022-11-02 20:14:41,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:41,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833575636] [2022-11-02 20:14:41,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:41,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:41,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:41,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:41,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:14:41,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833575636] [2022-11-02 20:14:41,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833575636] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:41,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:41,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:14:41,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142531831] [2022-11-02 20:14:41,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:41,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:14:41,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:14:41,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:14:41,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:14:41,804 INFO L87 Difference]: Start difference. First operand 277 states and 317 transitions. Second operand has 8 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:42,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:42,396 INFO L93 Difference]: Finished difference Result 300 states and 343 transitions. [2022-11-02 20:14:42,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:14:42,397 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-02 20:14:42,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:42,399 INFO L225 Difference]: With dead ends: 300 [2022-11-02 20:14:42,399 INFO L226 Difference]: Without dead ends: 300 [2022-11-02 20:14:42,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:14:42,400 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 120 mSDsluCounter, 887 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 1153 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:42,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 1153 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 20:14:42,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2022-11-02 20:14:42,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 289. [2022-11-02 20:14:42,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 162 states have (on average 1.7469135802469136) internal successors, (283), 268 states have internal predecessors, (283), 30 states have call successors, (30), 10 states have call predecessors, (30), 7 states have return successors, (19), 13 states have call predecessors, (19), 16 states have call successors, (19) [2022-11-02 20:14:42,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 332 transitions. [2022-11-02 20:14:42,419 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 332 transitions. Word has length 16 [2022-11-02 20:14:42,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:42,419 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 332 transitions. [2022-11-02 20:14:42,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:42,420 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 332 transitions. [2022-11-02 20:14:42,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-02 20:14:42,421 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:42,421 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:42,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:14:42,422 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting dll_insert_masterErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [dll_insert_masterErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 95 more)] === [2022-11-02 20:14:42,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:42,422 INFO L85 PathProgramCache]: Analyzing trace with hash -226556129, now seen corresponding path program 1 times [2022-11-02 20:14:42,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:42,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279409594] [2022-11-02 20:14:42,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:42,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:42,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:42,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:42,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:14:42,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279409594] [2022-11-02 20:14:42,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279409594] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:42,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:42,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:14:42,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513016638] [2022-11-02 20:14:42,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:42,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:14:42,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:14:42,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:14:42,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:14:42,888 INFO L87 Difference]: Start difference. First operand 289 states and 332 transitions. Second operand has 7 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:43,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:43,698 INFO L93 Difference]: Finished difference Result 299 states and 342 transitions. [2022-11-02 20:14:43,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:14:43,699 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-02 20:14:43,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:43,701 INFO L225 Difference]: With dead ends: 299 [2022-11-02 20:14:43,701 INFO L226 Difference]: Without dead ends: 299 [2022-11-02 20:14:43,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:14:43,703 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 80 mSDsluCounter, 756 mSDsCounter, 0 mSdLazyCounter, 697 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 1016 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:43,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 1016 Invalid, 706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 697 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-02 20:14:43,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2022-11-02 20:14:43,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 289. [2022-11-02 20:14:43,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 162 states have (on average 1.7345679012345678) internal successors, (281), 268 states have internal predecessors, (281), 30 states have call successors, (30), 10 states have call predecessors, (30), 7 states have return successors, (19), 13 states have call predecessors, (19), 16 states have call successors, (19) [2022-11-02 20:14:43,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 330 transitions. [2022-11-02 20:14:43,720 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 330 transitions. Word has length 16 [2022-11-02 20:14:43,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:43,721 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 330 transitions. [2022-11-02 20:14:43,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:43,721 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 330 transitions. [2022-11-02 20:14:43,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-02 20:14:43,723 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:43,723 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:43,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:14:43,724 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting dll_insert_masterErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [dll_insert_masterErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 95 more)] === [2022-11-02 20:14:43,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:43,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1322891007, now seen corresponding path program 1 times [2022-11-02 20:14:43,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:43,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833388030] [2022-11-02 20:14:43,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:43,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:43,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:43,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:43,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:14:43,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833388030] [2022-11-02 20:14:43,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833388030] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:43,833 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:43,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:14:43,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811598173] [2022-11-02 20:14:43,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:43,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:14:43,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:14:43,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:14:43,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:14:43,835 INFO L87 Difference]: Start difference. First operand 289 states and 330 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:44,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:44,150 INFO L93 Difference]: Finished difference Result 288 states and 329 transitions. [2022-11-02 20:14:44,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:14:44,150 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-02 20:14:44,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:44,152 INFO L225 Difference]: With dead ends: 288 [2022-11-02 20:14:44,152 INFO L226 Difference]: Without dead ends: 288 [2022-11-02 20:14:44,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:14:44,153 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 40 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:44,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 813 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:14:44,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2022-11-02 20:14:44,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2022-11-02 20:14:44,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 162 states have (on average 1.728395061728395) internal successors, (280), 267 states have internal predecessors, (280), 30 states have call successors, (30), 10 states have call predecessors, (30), 7 states have return successors, (19), 13 states have call predecessors, (19), 16 states have call successors, (19) [2022-11-02 20:14:44,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 329 transitions. [2022-11-02 20:14:44,172 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 329 transitions. Word has length 18 [2022-11-02 20:14:44,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:44,172 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 329 transitions. [2022-11-02 20:14:44,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:44,173 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 329 transitions. [2022-11-02 20:14:44,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-02 20:14:44,174 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:44,174 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:44,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:14:44,174 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting dll_insert_masterErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [dll_insert_masterErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 95 more)] === [2022-11-02 20:14:44,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:44,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1322891008, now seen corresponding path program 1 times [2022-11-02 20:14:44,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:44,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490295278] [2022-11-02 20:14:44,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:44,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:44,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:44,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:44,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:14:44,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490295278] [2022-11-02 20:14:44,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490295278] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:44,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:44,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:14:44,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797798416] [2022-11-02 20:14:44,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:44,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:14:44,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:14:44,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:14:44,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:14:44,400 INFO L87 Difference]: Start difference. First operand 288 states and 329 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:44,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:44,686 INFO L93 Difference]: Finished difference Result 287 states and 328 transitions. [2022-11-02 20:14:44,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:14:44,687 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-02 20:14:44,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:44,689 INFO L225 Difference]: With dead ends: 287 [2022-11-02 20:14:44,689 INFO L226 Difference]: Without dead ends: 287 [2022-11-02 20:14:44,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:14:44,690 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 55 mSDsluCounter, 638 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 914 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:44,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 914 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:14:44,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-11-02 20:14:44,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2022-11-02 20:14:44,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 162 states have (on average 1.7222222222222223) internal successors, (279), 266 states have internal predecessors, (279), 30 states have call successors, (30), 10 states have call predecessors, (30), 7 states have return successors, (19), 13 states have call predecessors, (19), 16 states have call successors, (19) [2022-11-02 20:14:44,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 328 transitions. [2022-11-02 20:14:44,701 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 328 transitions. Word has length 18 [2022-11-02 20:14:44,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:44,702 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 328 transitions. [2022-11-02 20:14:44,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:44,702 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 328 transitions. [2022-11-02 20:14:44,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-02 20:14:44,703 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:44,703 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] [2022-11-02 20:14:44,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 20:14:44,704 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting dll_insert_masterErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [dll_insert_masterErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 95 more)] === [2022-11-02 20:14:44,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:44,704 INFO L85 PathProgramCache]: Analyzing trace with hash -12061856, now seen corresponding path program 1 times [2022-11-02 20:14:44,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:44,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499519982] [2022-11-02 20:14:44,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:44,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:44,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:45,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:45,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:14:45,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499519982] [2022-11-02 20:14:45,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499519982] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:45,300 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:45,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:14:45,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548906962] [2022-11-02 20:14:45,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:45,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:14:45,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:14:45,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:14:45,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:14:45,303 INFO L87 Difference]: Start difference. First operand 287 states and 328 transitions. Second operand has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:46,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:46,020 INFO L93 Difference]: Finished difference Result 326 states and 372 transitions. [2022-11-02 20:14:46,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:14:46,021 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-02 20:14:46,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:46,023 INFO L225 Difference]: With dead ends: 326 [2022-11-02 20:14:46,023 INFO L226 Difference]: Without dead ends: 326 [2022-11-02 20:14:46,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:14:46,024 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 45 mSDsluCounter, 1508 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 1780 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:46,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 1780 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:14:46,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2022-11-02 20:14:46,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 307. [2022-11-02 20:14:46,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 179 states have (on average 1.681564245810056) internal successors, (301), 283 states have internal predecessors, (301), 32 states have call successors, (32), 12 states have call predecessors, (32), 8 states have return successors, (23), 14 states have call predecessors, (23), 18 states have call successors, (23) [2022-11-02 20:14:46,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 356 transitions. [2022-11-02 20:14:46,052 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 356 transitions. Word has length 20 [2022-11-02 20:14:46,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:46,052 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 356 transitions. [2022-11-02 20:14:46,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:46,053 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 356 transitions. [2022-11-02 20:14:46,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-02 20:14:46,054 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:46,054 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:46,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 20:14:46,055 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ##fun~$Pointer$~TO~VOIDErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [dll_insert_masterErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 95 more)] === [2022-11-02 20:14:46,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:46,056 INFO L85 PathProgramCache]: Analyzing trace with hash 551710607, now seen corresponding path program 1 times [2022-11-02 20:14:46,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:46,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527419149] [2022-11-02 20:14:46,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:46,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:46,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:46,176 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 20:14:46,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:14:46,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527419149] [2022-11-02 20:14:46,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527419149] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:46,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:46,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:14:46,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152302727] [2022-11-02 20:14:46,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:46,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:14:46,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:14:46,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:14:46,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:14:46,179 INFO L87 Difference]: Start difference. First operand 307 states and 356 transitions. Second operand has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:46,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:46,356 INFO L93 Difference]: Finished difference Result 305 states and 354 transitions. [2022-11-02 20:14:46,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:14:46,357 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-11-02 20:14:46,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:46,359 INFO L225 Difference]: With dead ends: 305 [2022-11-02 20:14:46,359 INFO L226 Difference]: Without dead ends: 305 [2022-11-02 20:14:46,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:14:46,360 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 21 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:46,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 458 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:14:46,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2022-11-02 20:14:46,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 305. [2022-11-02 20:14:46,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 179 states have (on average 1.670391061452514) internal successors, (299), 281 states have internal predecessors, (299), 32 states have call successors, (32), 12 states have call predecessors, (32), 8 states have return successors, (23), 14 states have call predecessors, (23), 18 states have call successors, (23) [2022-11-02 20:14:46,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 354 transitions. [2022-11-02 20:14:46,372 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 354 transitions. Word has length 27 [2022-11-02 20:14:46,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:46,372 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 354 transitions. [2022-11-02 20:14:46,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:46,373 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 354 transitions. [2022-11-02 20:14:46,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-02 20:14:46,374 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:46,374 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:14:46,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 20:14:46,375 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ##fun~$Pointer$~TO~VOIDErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [dll_insert_masterErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 95 more)] === [2022-11-02 20:14:46,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:46,375 INFO L85 PathProgramCache]: Analyzing trace with hash 67060467, now seen corresponding path program 1 times [2022-11-02 20:14:46,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:46,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513759388] [2022-11-02 20:14:46,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:46,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:46,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:46,855 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:14:46,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:14:46,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513759388] [2022-11-02 20:14:46,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513759388] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:46,856 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:46,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:14:46,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503185721] [2022-11-02 20:14:46,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:46,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:14:46,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:14:46,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:14:46,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:14:46,858 INFO L87 Difference]: Start difference. First operand 305 states and 354 transitions. Second operand has 6 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:47,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:47,460 INFO L93 Difference]: Finished difference Result 304 states and 353 transitions. [2022-11-02 20:14:47,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:14:47,461 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-11-02 20:14:47,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:47,463 INFO L225 Difference]: With dead ends: 304 [2022-11-02 20:14:47,463 INFO L226 Difference]: Without dead ends: 304 [2022-11-02 20:14:47,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:14:47,464 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 62 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 873 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:47,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 873 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 20:14:47,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-11-02 20:14:47,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 303. [2022-11-02 20:14:47,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 179 states have (on average 1.6592178770949721) internal successors, (297), 279 states have internal predecessors, (297), 32 states have call successors, (32), 12 states have call predecessors, (32), 8 states have return successors, (23), 14 states have call predecessors, (23), 18 states have call successors, (23) [2022-11-02 20:14:47,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 352 transitions. [2022-11-02 20:14:47,477 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 352 transitions. Word has length 31 [2022-11-02 20:14:47,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:47,477 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 352 transitions. [2022-11-02 20:14:47,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:47,478 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 352 transitions. [2022-11-02 20:14:47,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-02 20:14:47,479 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:47,479 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:14:47,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-02 20:14:47,479 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ##fun~$Pointer$~TO~VOIDErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [dll_insert_masterErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 95 more)] === [2022-11-02 20:14:47,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:47,480 INFO L85 PathProgramCache]: Analyzing trace with hash 67060466, now seen corresponding path program 1 times [2022-11-02 20:14:47,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:47,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160126908] [2022-11-02 20:14:47,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:47,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:47,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:47,753 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:14:47,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:14:47,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160126908] [2022-11-02 20:14:47,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160126908] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:47,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:47,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:14:47,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684546532] [2022-11-02 20:14:47,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:47,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:14:47,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:14:47,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:14:47,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:14:47,756 INFO L87 Difference]: Start difference. First operand 303 states and 352 transitions. Second operand has 7 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:48,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:48,168 INFO L93 Difference]: Finished difference Result 301 states and 350 transitions. [2022-11-02 20:14:48,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:14:48,168 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-11-02 20:14:48,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:48,170 INFO L225 Difference]: With dead ends: 301 [2022-11-02 20:14:48,170 INFO L226 Difference]: Without dead ends: 301 [2022-11-02 20:14:48,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:14:48,171 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 74 mSDsluCounter, 705 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 975 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:48,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 975 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:14:48,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2022-11-02 20:14:48,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2022-11-02 20:14:48,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 179 states have (on average 1.6480446927374302) internal successors, (295), 277 states have internal predecessors, (295), 32 states have call successors, (32), 12 states have call predecessors, (32), 8 states have return successors, (23), 14 states have call predecessors, (23), 18 states have call successors, (23) [2022-11-02 20:14:48,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 350 transitions. [2022-11-02 20:14:48,182 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 350 transitions. Word has length 31 [2022-11-02 20:14:48,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:48,183 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 350 transitions. [2022-11-02 20:14:48,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:48,183 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 350 transitions. [2022-11-02 20:14:48,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-02 20:14:48,184 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:48,184 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:14:48,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-02 20:14:48,185 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ##fun~$Pointer$~TO~VOIDErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [dll_insert_masterErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 95 more)] === [2022-11-02 20:14:48,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:48,186 INFO L85 PathProgramCache]: Analyzing trace with hash 20600531, now seen corresponding path program 1 times [2022-11-02 20:14:48,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:48,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732126186] [2022-11-02 20:14:48,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:48,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:48,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:48,297 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 20:14:48,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:14:48,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732126186] [2022-11-02 20:14:48,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732126186] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:48,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:48,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:14:48,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653903074] [2022-11-02 20:14:48,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:48,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:14:48,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:14:48,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:14:48,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:14:48,301 INFO L87 Difference]: Start difference. First operand 301 states and 350 transitions. Second operand has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:48,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:48,597 INFO L93 Difference]: Finished difference Result 300 states and 349 transitions. [2022-11-02 20:14:48,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:14:48,598 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-11-02 20:14:48,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:48,600 INFO L225 Difference]: With dead ends: 300 [2022-11-02 20:14:48,600 INFO L226 Difference]: Without dead ends: 300 [2022-11-02 20:14:48,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:14:48,601 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 38 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 801 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:48,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 801 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:14:48,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2022-11-02 20:14:48,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 300. [2022-11-02 20:14:48,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 179 states have (on average 1.6424581005586592) internal successors, (294), 276 states have internal predecessors, (294), 32 states have call successors, (32), 12 states have call predecessors, (32), 8 states have return successors, (23), 14 states have call predecessors, (23), 18 states have call successors, (23) [2022-11-02 20:14:48,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 349 transitions. [2022-11-02 20:14:48,616 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 349 transitions. Word has length 33 [2022-11-02 20:14:48,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:48,616 INFO L495 AbstractCegarLoop]: Abstraction has 300 states and 349 transitions. [2022-11-02 20:14:48,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:48,617 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 349 transitions. [2022-11-02 20:14:48,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-02 20:14:48,618 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:48,618 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:14:48,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-02 20:14:48,618 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ##fun~$Pointer$~TO~VOIDErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [dll_insert_masterErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 95 more)] === [2022-11-02 20:14:48,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:48,619 INFO L85 PathProgramCache]: Analyzing trace with hash 20600532, now seen corresponding path program 1 times [2022-11-02 20:14:48,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:48,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927722288] [2022-11-02 20:14:48,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:48,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:48,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:48,833 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 20:14:48,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:14:48,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927722288] [2022-11-02 20:14:48,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927722288] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:48,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:48,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:14:48,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181479365] [2022-11-02 20:14:48,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:48,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:14:48,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:14:48,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:14:48,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:14:48,836 INFO L87 Difference]: Start difference. First operand 300 states and 349 transitions. Second operand has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 1 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:49,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:49,187 INFO L93 Difference]: Finished difference Result 299 states and 348 transitions. [2022-11-02 20:14:49,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:14:49,188 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 1 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-11-02 20:14:49,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:49,190 INFO L225 Difference]: With dead ends: 299 [2022-11-02 20:14:49,191 INFO L226 Difference]: Without dead ends: 299 [2022-11-02 20:14:49,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:14:49,192 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 37 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 1086 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:49,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 1086 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:14:49,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2022-11-02 20:14:49,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2022-11-02 20:14:49,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 179 states have (on average 1.6368715083798884) internal successors, (293), 275 states have internal predecessors, (293), 32 states have call successors, (32), 12 states have call predecessors, (32), 8 states have return successors, (23), 14 states have call predecessors, (23), 18 states have call successors, (23) [2022-11-02 20:14:49,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 348 transitions. [2022-11-02 20:14:49,204 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 348 transitions. Word has length 33 [2022-11-02 20:14:49,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:49,205 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 348 transitions. [2022-11-02 20:14:49,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 1 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:49,206 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 348 transitions. [2022-11-02 20:14:49,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-02 20:14:49,207 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:49,207 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:14:49,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-02 20:14:49,208 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ##fun~$Pointer$~TO~VOIDErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [dll_insert_masterErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 95 more)] === [2022-11-02 20:14:49,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:49,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1677723852, now seen corresponding path program 1 times [2022-11-02 20:14:49,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:49,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272303113] [2022-11-02 20:14:49,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:49,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:49,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:49,875 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:14:49,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:14:49,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272303113] [2022-11-02 20:14:49,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272303113] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:49,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:49,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:14:49,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781493106] [2022-11-02 20:14:49,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:49,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:14:49,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:14:49,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:14:49,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:14:49,881 INFO L87 Difference]: Start difference. First operand 299 states and 348 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:50,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:50,464 INFO L93 Difference]: Finished difference Result 313 states and 363 transitions. [2022-11-02 20:14:50,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:14:50,464 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-11-02 20:14:50,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:50,467 INFO L225 Difference]: With dead ends: 313 [2022-11-02 20:14:50,467 INFO L226 Difference]: Without dead ends: 313 [2022-11-02 20:14:50,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:14:50,469 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 24 mSDsluCounter, 1316 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 1587 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:50,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 1587 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:14:50,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2022-11-02 20:14:50,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 312. [2022-11-02 20:14:50,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 191 states have (on average 1.5968586387434556) internal successors, (305), 288 states have internal predecessors, (305), 32 states have call successors, (32), 12 states have call predecessors, (32), 9 states have return successors, (25), 14 states have call predecessors, (25), 18 states have call successors, (25) [2022-11-02 20:14:50,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 362 transitions. [2022-11-02 20:14:50,487 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 362 transitions. Word has length 35 [2022-11-02 20:14:50,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:50,489 INFO L495 AbstractCegarLoop]: Abstraction has 312 states and 362 transitions. [2022-11-02 20:14:50,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:50,489 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 362 transitions. [2022-11-02 20:14:50,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-02 20:14:50,496 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:50,496 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 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, 1, 1, 1, 1] [2022-11-02 20:14:50,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-02 20:14:50,497 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ##fun~$Pointer$~TO~VOIDErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [dll_insert_masterErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 95 more)] === [2022-11-02 20:14:50,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:50,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1451018694, now seen corresponding path program 1 times [2022-11-02 20:14:50,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:50,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953392356] [2022-11-02 20:14:50,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:50,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:50,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:51,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-02 20:14:51,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:51,839 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:14:51,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:14:51,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953392356] [2022-11-02 20:14:51,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953392356] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:14:51,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141520816] [2022-11-02 20:14:51,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:51,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:14:51,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa45ca8-f21e-4958-8f82-aeb57b29eaa1/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:14:51,845 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa45ca8-f21e-4958-8f82-aeb57b29eaa1/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:14:51,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa45ca8-f21e-4958-8f82-aeb57b29eaa1/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:14:52,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:52,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 65 conjunts are in the unsatisfiable core [2022-11-02 20:14:52,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:14:52,397 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-02 20:14:52,538 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:14:52,791 INFO L356 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-11-02 20:14:52,791 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 16 treesize of output 26 [2022-11-02 20:14:52,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:14:52,898 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 24 treesize of output 24 [2022-11-02 20:14:52,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:14:52,922 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 24 treesize of output 24 [2022-11-02 20:14:53,076 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 25 treesize of output 13 [2022-11-02 20:14:53,108 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:14:53,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:14:53,452 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_578 (Array Int Int)) (|v_##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base_12| Int)) (or (= (select (store |c_#valid| |v_##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base_12| 1) (select (select (store |c_#memory_$Pointer$.base| |v_##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base_12| v_ArrVal_578) |c_##fun~$Pointer$~TO~VOID_#~10#1.base|) |c_##fun~$Pointer$~TO~VOID_#~10#1.offset|)) 1) (not (< |v_##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base_12| |c_#StackHeapBarrier|)))) is different from false [2022-11-02 20:14:53,470 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_578 (Array Int Int)) (|v_##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base_12| Int)) (or (not (< |v_##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base_12| |c_#StackHeapBarrier|)) (= (select (store |c_#valid| |v_##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base_12| 1) (select (select (store |c_#memory_$Pointer$.base| |v_##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base_12| v_ArrVal_578) |c_##fun~$Pointer$~TO~VOID_#in~10#1.base|) |c_##fun~$Pointer$~TO~VOID_#in~10#1.offset|)) 1))) is different from false [2022-11-02 20:14:53,489 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_578 (Array Int Int)) (|v_##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base_12| Int)) (or (not (< |v_##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base_12| |c_#StackHeapBarrier|)) (= (select (store |c_#valid| |v_##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base_12| 1) (select (select (store |c_#memory_$Pointer$.base| |v_##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base_12| v_ArrVal_578) |c_dll_create_generic_~#dll~0.base|) |c_dll_create_generic_~#dll~0.offset|)) 1))) is different from false [2022-11-02 20:14:53,662 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:14:53,663 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2022-11-02 20:14:53,676 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 46 treesize of output 34 [2022-11-02 20:14:53,694 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 42 treesize of output 38 [2022-11-02 20:14:53,703 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2022-11-02 20:14:53,921 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:14:53,922 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2022-11-02 20:14:53,926 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 20:14:53,936 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:14:53,937 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 24 [2022-11-02 20:15:09,407 WARN L234 SmtUtils]: Spent 15.31s on a formula simplification that was a NOOP. DAG size: 28 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-02 20:15:18,975 WARN L234 SmtUtils]: Spent 9.12s on a formula simplification that was a NOOP. DAG size: 28 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-02 20:15:33,574 WARN L234 SmtUtils]: Spent 12.44s on a formula simplification that was a NOOP. DAG size: 28 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-02 20:15:33,761 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 21 [2022-11-02 20:15:33,778 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 21 [2022-11-02 20:15:33,848 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 1 not checked. [2022-11-02 20:15:33,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2141520816] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:15:33,849 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:15:33,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 17] total 41 [2022-11-02 20:15:33,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493532179] [2022-11-02 20:15:33,849 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:15:33,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-11-02 20:15:33,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:15:33,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-11-02 20:15:33,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1372, Unknown=5, NotChecked=228, Total=1722 [2022-11-02 20:15:33,852 INFO L87 Difference]: Start difference. First operand 312 states and 362 transitions. Second operand has 42 states, 36 states have (on average 2.4166666666666665) internal successors, (87), 36 states have internal predecessors, (87), 6 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 20:15:38,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:15:38,526 INFO L93 Difference]: Finished difference Result 339 states and 395 transitions. [2022-11-02 20:15:38,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-02 20:15:38,527 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 36 states have (on average 2.4166666666666665) internal successors, (87), 36 states have internal predecessors, (87), 6 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 51 [2022-11-02 20:15:38,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:15:38,529 INFO L225 Difference]: With dead ends: 339 [2022-11-02 20:15:38,529 INFO L226 Difference]: Without dead ends: 339 [2022-11-02 20:15:38,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 82 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 518 ImplicationChecksByTransitivity, 42.1s TimeCoverageRelationStatistics Valid=480, Invalid=2660, Unknown=64, NotChecked=336, Total=3540 [2022-11-02 20:15:38,532 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 310 mSDsluCounter, 3320 mSDsCounter, 0 mSdLazyCounter, 2560 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 3555 SdHoareTripleChecker+Invalid, 4067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 2560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1382 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:15:38,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 3555 Invalid, 4067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 2560 Invalid, 0 Unknown, 1382 Unchecked, 2.7s Time] [2022-11-02 20:15:38,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2022-11-02 20:15:38,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 328. [2022-11-02 20:15:38,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 206 states have (on average 1.5679611650485437) internal successors, (323), 303 states have internal predecessors, (323), 32 states have call successors, (32), 13 states have call predecessors, (32), 10 states have return successors, (24), 14 states have call predecessors, (24), 18 states have call successors, (24) [2022-11-02 20:15:38,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 379 transitions. [2022-11-02 20:15:38,543 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 379 transitions. Word has length 51 [2022-11-02 20:15:38,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:15:38,543 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 379 transitions. [2022-11-02 20:15:38,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 36 states have (on average 2.4166666666666665) internal successors, (87), 36 states have internal predecessors, (87), 6 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 20:15:38,544 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 379 transitions. [2022-11-02 20:15:38,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-02 20:15:38,546 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:15:38,547 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 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, 1, 1, 1, 1] [2022-11-02 20:15:38,595 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa45ca8-f21e-4958-8f82-aeb57b29eaa1/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-02 20:15:38,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa45ca8-f21e-4958-8f82-aeb57b29eaa1/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-02 20:15:38,762 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ##fun~$Pointer$~TO~VOIDErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [dll_insert_masterErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 95 more)] === [2022-11-02 20:15:38,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:15:38,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1451018695, now seen corresponding path program 1 times [2022-11-02 20:15:38,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:15:38,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668331932] [2022-11-02 20:15:38,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:38,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:15:38,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:40,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-02 20:15:40,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:40,488 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:15:40,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:15:40,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668331932] [2022-11-02 20:15:40,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668331932] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:15:40,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573507339] [2022-11-02 20:15:40,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:40,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:15:40,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa45ca8-f21e-4958-8f82-aeb57b29eaa1/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:15:40,491 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa45ca8-f21e-4958-8f82-aeb57b29eaa1/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:15:40,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa45ca8-f21e-4958-8f82-aeb57b29eaa1/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:15:40,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:40,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 87 conjunts are in the unsatisfiable core [2022-11-02 20:15:40,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:15:40,813 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-02 20:15:40,822 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-02 20:15:41,199 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:15:41,207 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:15:41,579 INFO L356 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-11-02 20:15:41,580 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2022-11-02 20:15:41,598 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 16 treesize of output 18 [2022-11-02 20:15:41,693 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 16 [2022-11-02 20:15:41,704 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 24 treesize of output 24 [2022-11-02 20:15:41,738 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 16 [2022-11-02 20:15:41,759 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 24 treesize of output 24 [2022-11-02 20:15:41,933 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:15:41,937 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 17 treesize of output 9 [2022-11-02 20:15:42,068 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:15:42,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:15:42,307 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_769 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$.offset| |c_##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| v_ArrVal_769) |c_##fun~$Pointer$~TO~VOID_dll_insert_slave_~dll#1.base|) |c_##fun~$Pointer$~TO~VOID_dll_insert_slave_~dll#1.offset|) 4))) (forall ((v_ArrVal_769 (Array Int Int)) (v_ArrVal_770 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$.offset| |c_##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| v_ArrVal_769) |c_##fun~$Pointer$~TO~VOID_dll_insert_slave_~dll#1.base|) |c_##fun~$Pointer$~TO~VOID_dll_insert_slave_~dll#1.offset|) 8) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| v_ArrVal_770) |c_##fun~$Pointer$~TO~VOID_dll_insert_slave_~dll#1.base|) |c_##fun~$Pointer$~TO~VOID_dll_insert_slave_~dll#1.offset|))))) is different from false [2022-11-02 20:15:44,878 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-02 20:15:44,879 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 84 treesize of output 1 [2022-11-02 20:15:44,969 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:15:44,969 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 21 [2022-11-02 20:15:44,981 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:15:44,982 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 34 treesize of output 37 [2022-11-02 20:15:44,989 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 11 treesize of output 9 [2022-11-02 20:15:45,037 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:15:45,038 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 41 [2022-11-02 20:15:45,048 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:15:45,048 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 33 [2022-11-02 20:15:45,053 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 20:15:45,065 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:15:45,065 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 30 treesize of output 33 [2022-11-02 20:15:45,071 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 20:15:45,084 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:15:45,085 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 26 [2022-11-02 20:15:51,319 WARN L234 SmtUtils]: Spent 6.06s on a formula simplification that was a NOOP. DAG size: 35 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-02 20:15:58,445 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:15:58,445 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 64 treesize of output 104 [2022-11-02 20:15:58,618 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 3 not checked. [2022-11-02 20:15:58,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573507339] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:15:58,619 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:15:58,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 13] total 39 [2022-11-02 20:15:58,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897326719] [2022-11-02 20:15:58,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:15:58,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-11-02 20:15:58,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:15:58,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-11-02 20:15:58,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1377, Unknown=4, NotChecked=74, Total=1560 [2022-11-02 20:15:58,624 INFO L87 Difference]: Start difference. First operand 328 states and 379 transitions. Second operand has 40 states, 35 states have (on average 2.6857142857142855) internal successors, (94), 35 states have internal predecessors, (94), 5 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-02 20:16:09,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:16:09,778 INFO L93 Difference]: Finished difference Result 363 states and 418 transitions. [2022-11-02 20:16:09,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-02 20:16:09,778 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 35 states have (on average 2.6857142857142855) internal successors, (94), 35 states have internal predecessors, (94), 5 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 51 [2022-11-02 20:16:09,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:16:09,781 INFO L225 Difference]: With dead ends: 363 [2022-11-02 20:16:09,781 INFO L226 Difference]: Without dead ends: 363 [2022-11-02 20:16:09,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 79 SyntacticMatches, 3 SemanticMatches, 65 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 24.3s TimeCoverageRelationStatistics Valid=673, Invalid=3617, Unknown=4, NotChecked=128, Total=4422 [2022-11-02 20:16:09,784 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 342 mSDsluCounter, 3138 mSDsCounter, 0 mSdLazyCounter, 2945 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 3375 SdHoareTripleChecker+Invalid, 4473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 2945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1368 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:16:09,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 3375 Invalid, 4473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 2945 Invalid, 0 Unknown, 1368 Unchecked, 2.9s Time] [2022-11-02 20:16:09,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2022-11-02 20:16:09,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 327. [2022-11-02 20:16:09,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 206 states have (on average 1.558252427184466) internal successors, (321), 302 states have internal predecessors, (321), 32 states have call successors, (32), 13 states have call predecessors, (32), 10 states have return successors, (23), 14 states have call predecessors, (23), 18 states have call successors, (23) [2022-11-02 20:16:09,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 376 transitions. [2022-11-02 20:16:09,796 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 376 transitions. Word has length 51 [2022-11-02 20:16:09,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:16:09,797 INFO L495 AbstractCegarLoop]: Abstraction has 327 states and 376 transitions. [2022-11-02 20:16:09,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 35 states have (on average 2.6857142857142855) internal successors, (94), 35 states have internal predecessors, (94), 5 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-02 20:16:09,797 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 376 transitions. [2022-11-02 20:16:09,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-02 20:16:09,798 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:16:09,798 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 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, 1] [2022-11-02 20:16:09,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa45ca8-f21e-4958-8f82-aeb57b29eaa1/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:16:09,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa45ca8-f21e-4958-8f82-aeb57b29eaa1/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-02 20:16:09,999 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting dll_insert_masterErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [dll_insert_masterErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 95 more)] === [2022-11-02 20:16:09,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:16:10,000 INFO L85 PathProgramCache]: Analyzing trace with hash -470108245, now seen corresponding path program 1 times [2022-11-02 20:16:10,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:16:10,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249540883] [2022-11-02 20:16:10,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:10,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:16:10,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:10,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-02 20:16:10,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:10,250 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:16:10,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:16:10,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249540883] [2022-11-02 20:16:10,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249540883] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:16:10,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456250976] [2022-11-02 20:16:10,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:10,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:16:10,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa45ca8-f21e-4958-8f82-aeb57b29eaa1/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:16:10,253 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa45ca8-f21e-4958-8f82-aeb57b29eaa1/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:16:10,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa45ca8-f21e-4958-8f82-aeb57b29eaa1/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:16:10,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:10,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:16:10,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:16:10,575 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:16:10,575 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:16:10,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1456250976] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:16:10,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:16:10,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 6 [2022-11-02 20:16:10,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759759750] [2022-11-02 20:16:10,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:16:10,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:16:10,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:16:10,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:16:10,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:16:10,579 INFO L87 Difference]: Start difference. First operand 327 states and 376 transitions. Second operand has 5 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 20:16:10,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:16:10,639 INFO L93 Difference]: Finished difference Result 313 states and 349 transitions. [2022-11-02 20:16:10,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:16:10,640 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2022-11-02 20:16:10,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:16:10,643 INFO L225 Difference]: With dead ends: 313 [2022-11-02 20:16:10,643 INFO L226 Difference]: Without dead ends: 313 [2022-11-02 20:16:10,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:16:10,645 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 29 mSDsluCounter, 803 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 1081 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:16:10,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 1081 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:16:10,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2022-11-02 20:16:10,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2022-11-02 20:16:10,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 195 states have (on average 1.558974358974359) internal successors, (304), 291 states have internal predecessors, (304), 29 states have call successors, (29), 12 states have call predecessors, (29), 10 states have return successors, (16), 12 states have call predecessors, (16), 15 states have call successors, (16) [2022-11-02 20:16:10,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 349 transitions. [2022-11-02 20:16:10,657 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 349 transitions. Word has length 54 [2022-11-02 20:16:10,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:16:10,658 INFO L495 AbstractCegarLoop]: Abstraction has 313 states and 349 transitions. [2022-11-02 20:16:10,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 20:16:10,658 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 349 transitions. [2022-11-02 20:16:10,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-02 20:16:10,659 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:16:10,659 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:16:10,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa45ca8-f21e-4958-8f82-aeb57b29eaa1/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:16:10,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa45ca8-f21e-4958-8f82-aeb57b29eaa1/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:16:10,885 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting dll_insert_masterErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [dll_insert_masterErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 95 more)] === [2022-11-02 20:16:10,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:16:10,885 INFO L85 PathProgramCache]: Analyzing trace with hash -996489836, now seen corresponding path program 1 times [2022-11-02 20:16:10,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:16:10,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579187899] [2022-11-02 20:16:10,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:10,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:16:10,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:11,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-02 20:16:11,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:12,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-02 20:16:12,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:12,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:16:12,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:12,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-02 20:16:12,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:13,256 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:16:13,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:16:13,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579187899] [2022-11-02 20:16:13,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579187899] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:16:13,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821163097] [2022-11-02 20:16:13,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:13,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:16:13,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa45ca8-f21e-4958-8f82-aeb57b29eaa1/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:16:13,260 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa45ca8-f21e-4958-8f82-aeb57b29eaa1/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:16:13,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa45ca8-f21e-4958-8f82-aeb57b29eaa1/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 20:16:13,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:13,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 58 conjunts are in the unsatisfiable core [2022-11-02 20:16:13,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:16:13,721 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2022-11-02 20:16:13,810 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 8 treesize of output 4 [2022-11-02 20:16:14,424 WARN L855 $PredicateComparison]: unable to prove that (exists ((|##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| Int) (v_ArrVal_1299 (Array Int Int))) (and (< |##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| |c_#StackHeapBarrier|) (= |c_##fun~$Pointer$~TO~VOID_dll_insert_slave_~next~0#1.base| (select (select (store |c_old(#memory_$Pointer$.base)| |##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| v_ArrVal_1299) |c_##fun~$Pointer$~TO~VOID_#in~10#1.base|) |c_##fun~$Pointer$~TO~VOID_#in~10#1.offset|)))) is different from true [2022-11-02 20:16:14,438 WARN L855 $PredicateComparison]: unable to prove that (exists ((|##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| Int) (v_ArrVal_1299 (Array Int Int))) (and (= (select (select (store |c_old(#memory_$Pointer$.base)| |##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| v_ArrVal_1299) |c_##fun~$Pointer$~TO~VOID_#in~10#1.base|) |c_##fun~$Pointer$~TO~VOID_#in~10#1.offset|) 0) (< |##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| |c_#StackHeapBarrier|))) is different from true [2022-11-02 20:16:14,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:16:14,479 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 5 not checked. [2022-11-02 20:16:14,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:16:15,259 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1322 (Array Int Int)) (|v_##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base_40| Int)) (or (not (= (select (select (store |c_#memory_$Pointer$.base| |v_##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base_40| v_ArrVal_1322) |c_dll_create_generic_~#dll~0.base|) |c_dll_create_generic_~#dll~0.offset|) 0)) (not (< |v_##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base_40| |c_#StackHeapBarrier|)))) is different from false [2022-11-02 20:16:15,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [821163097] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:16:15,261 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:16:15,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 32 [2022-11-02 20:16:15,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045564153] [2022-11-02 20:16:15,262 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:16:15,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-02 20:16:15,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:16:15,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-02 20:16:15,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=795, Unknown=6, NotChecked=174, Total=1056 [2022-11-02 20:16:15,263 INFO L87 Difference]: Start difference. First operand 313 states and 349 transitions. Second operand has 32 states, 29 states have (on average 2.6206896551724137) internal successors, (76), 28 states have internal predecessors, (76), 5 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2022-11-02 20:16:18,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:16:18,072 INFO L93 Difference]: Finished difference Result 333 states and 373 transitions. [2022-11-02 20:16:18,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-02 20:16:18,073 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 29 states have (on average 2.6206896551724137) internal successors, (76), 28 states have internal predecessors, (76), 5 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) Word has length 64 [2022-11-02 20:16:18,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:16:18,075 INFO L225 Difference]: With dead ends: 333 [2022-11-02 20:16:18,076 INFO L226 Difference]: Without dead ends: 329 [2022-11-02 20:16:18,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 367 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=197, Invalid=1871, Unknown=14, NotChecked=270, Total=2352 [2022-11-02 20:16:18,077 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 70 mSDsluCounter, 3836 mSDsCounter, 0 mSdLazyCounter, 2197 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 4067 SdHoareTripleChecker+Invalid, 3466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 2197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1231 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:16:18,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 4067 Invalid, 3466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 2197 Invalid, 0 Unknown, 1231 Unchecked, 1.8s Time] [2022-11-02 20:16:18,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2022-11-02 20:16:18,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 313. [2022-11-02 20:16:18,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 195 states have (on average 1.5538461538461539) internal successors, (303), 291 states have internal predecessors, (303), 29 states have call successors, (29), 12 states have call predecessors, (29), 10 states have return successors, (16), 12 states have call predecessors, (16), 15 states have call successors, (16) [2022-11-02 20:16:18,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 348 transitions. [2022-11-02 20:16:18,088 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 348 transitions. Word has length 64 [2022-11-02 20:16:18,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:16:18,088 INFO L495 AbstractCegarLoop]: Abstraction has 313 states and 348 transitions. [2022-11-02 20:16:18,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 29 states have (on average 2.6206896551724137) internal successors, (76), 28 states have internal predecessors, (76), 5 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2022-11-02 20:16:18,089 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 348 transitions. [2022-11-02 20:16:18,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-02 20:16:18,090 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:16:18,090 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:16:18,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa45ca8-f21e-4958-8f82-aeb57b29eaa1/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:16:18,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa45ca8-f21e-4958-8f82-aeb57b29eaa1/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:16:18,311 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting dll_insert_masterErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [dll_insert_masterErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 95 more)] === [2022-11-02 20:16:18,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:16:18,312 INFO L85 PathProgramCache]: Analyzing trace with hash 2033150353, now seen corresponding path program 1 times [2022-11-02 20:16:18,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:16:18,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391696060] [2022-11-02 20:16:18,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:18,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:16:18,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:19,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-02 20:16:19,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:20,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-02 20:16:20,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:28,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:16:28,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:29,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-02 20:16:29,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:35,012 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:16:35,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:16:35,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391696060] [2022-11-02 20:16:35,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391696060] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:16:35,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767426461] [2022-11-02 20:16:35,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:35,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:16:35,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa45ca8-f21e-4958-8f82-aeb57b29eaa1/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:16:35,024 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa45ca8-f21e-4958-8f82-aeb57b29eaa1/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:16:35,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa45ca8-f21e-4958-8f82-aeb57b29eaa1/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 20:16:35,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:35,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 79 conjunts are in the unsatisfiable core [2022-11-02 20:16:35,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:16:35,561 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2022-11-02 20:16:35,997 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:16:36,289 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-02 20:16:36,290 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 15 [2022-11-02 20:16:36,296 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 8 treesize of output 4 [2022-11-02 20:16:36,899 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1685 Int)) (= |c_#valid| (store |c_old(#valid)| |c_##fun~$Pointer$~TO~VOID_dll_insert_slave_~item~0#1.base| v_ArrVal_1685))) (exists ((v_ArrVal_1686 (Array Int Int))) (= |c_##fun~$Pointer$~TO~VOID_dll_insert_slave_#t~mem6#1.base| (select (select (store |c_old(#memory_$Pointer$.base)| |c_##fun~$Pointer$~TO~VOID_dll_insert_slave_~item~0#1.base| v_ArrVal_1686) |c_##fun~$Pointer$~TO~VOID_#in~10#1.base|) |c_##fun~$Pointer$~TO~VOID_#in~10#1.offset|))) (< |c_##fun~$Pointer$~TO~VOID_dll_insert_slave_~item~0#1.base| |c_#StackHeapBarrier|)) is different from true [2022-11-02 20:16:39,183 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 29 treesize of output 21 [2022-11-02 20:16:39,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:16:39,900 INFO L356 Elim1Store]: treesize reduction 91, result has 20.2 percent of original size [2022-11-02 20:16:39,901 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 6 case distinctions, treesize of input 35 treesize of output 46 [2022-11-02 20:16:39,924 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-11-02 20:16:39,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:16:40,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1767426461] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:16:40,621 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:16:40,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 21] total 44 [2022-11-02 20:16:40,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226203147] [2022-11-02 20:16:40,622 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:16:40,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-11-02 20:16:40,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:16:40,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-11-02 20:16:40,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1824, Unknown=9, NotChecked=86, Total=2070 [2022-11-02 20:16:40,624 INFO L87 Difference]: Start difference. First operand 313 states and 348 transitions. Second operand has 45 states, 40 states have (on average 2.525) internal successors, (101), 40 states have internal predecessors, (101), 8 states have call successors, (11), 4 states have call predecessors, (11), 7 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-02 20:16:48,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:16:48,871 INFO L93 Difference]: Finished difference Result 347 states and 386 transitions. [2022-11-02 20:16:48,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-02 20:16:48,872 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 40 states have (on average 2.525) internal successors, (101), 40 states have internal predecessors, (101), 8 states have call successors, (11), 4 states have call predecessors, (11), 7 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 65 [2022-11-02 20:16:48,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:16:48,874 INFO L225 Difference]: With dead ends: 347 [2022-11-02 20:16:48,874 INFO L226 Difference]: Without dead ends: 347 [2022-11-02 20:16:48,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 65 SyntacticMatches, 3 SemanticMatches, 61 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 803 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=300, Invalid=3465, Unknown=21, NotChecked=120, Total=3906 [2022-11-02 20:16:48,876 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 254 mSDsluCounter, 2438 mSDsCounter, 0 mSdLazyCounter, 3049 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 2656 SdHoareTripleChecker+Invalid, 4996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 3049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1856 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:16:48,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 2656 Invalid, 4996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 3049 Invalid, 0 Unknown, 1856 Unchecked, 5.0s Time] [2022-11-02 20:16:48,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2022-11-02 20:16:48,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 324. [2022-11-02 20:16:48,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 204 states have (on average 1.5441176470588236) internal successors, (315), 298 states have internal predecessors, (315), 29 states have call successors, (29), 12 states have call predecessors, (29), 12 states have return successors, (19), 16 states have call predecessors, (19), 15 states have call successors, (19) [2022-11-02 20:16:48,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 363 transitions. [2022-11-02 20:16:48,892 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 363 transitions. Word has length 65 [2022-11-02 20:16:48,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:16:48,892 INFO L495 AbstractCegarLoop]: Abstraction has 324 states and 363 transitions. [2022-11-02 20:16:48,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 40 states have (on average 2.525) internal successors, (101), 40 states have internal predecessors, (101), 8 states have call successors, (11), 4 states have call predecessors, (11), 7 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-02 20:16:48,893 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 363 transitions. [2022-11-02 20:16:48,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-02 20:16:48,894 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:16:48,894 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:16:48,930 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa45ca8-f21e-4958-8f82-aeb57b29eaa1/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:16:49,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa45ca8-f21e-4958-8f82-aeb57b29eaa1/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:16:49,107 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting dll_insert_masterErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [dll_insert_masterErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 95 more)] === [2022-11-02 20:16:49,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:16:49,108 INFO L85 PathProgramCache]: Analyzing trace with hash 2033150354, now seen corresponding path program 1 times [2022-11-02 20:16:49,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:16:49,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353295369] [2022-11-02 20:16:49,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:49,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:16:49,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:50,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-02 20:16:50,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:50,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-02 20:16:50,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat