./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/heap-manipulation/dll_of_dll-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8393723b 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_73d46907-95d9-4bf6-ac75-471e10ba897a/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d46907-95d9-4bf6-ac75-471e10ba897a/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d46907-95d9-4bf6-ac75-471e10ba897a/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d46907-95d9-4bf6-ac75-471e10ba897a/bin/uautomizer-TMbwUNV5ro/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/heap-manipulation/dll_of_dll-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d46907-95d9-4bf6-ac75-471e10ba897a/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d46907-95d9-4bf6-ac75-471e10ba897a/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0e14b8baad7c8f50637b16b3adcb891ef363d7563e7c4e0e74695e7b8e3d1787 --- 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-8393723 [2022-11-18 20:33:53,532 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:33:53,535 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:33:53,558 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:33:53,559 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:33:53,560 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:33:53,562 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:33:53,565 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:33:53,567 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:33:53,568 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:33:53,570 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:33:53,572 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:33:53,572 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:33:53,574 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:33:53,575 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:33:53,577 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:33:53,579 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:33:53,580 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:33:53,582 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:33:53,585 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:33:53,591 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:33:53,594 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:33:53,597 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:33:53,600 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:33:53,605 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:33:53,612 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:33:53,613 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:33:53,614 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:33:53,616 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:33:53,618 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:33:53,620 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:33:53,621 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:33:53,623 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:33:53,625 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:33:53,627 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:33:53,628 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:33:53,629 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:33:53,630 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:33:53,630 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:33:53,631 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:33:53,632 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:33:53,633 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d46907-95d9-4bf6-ac75-471e10ba897a/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-18 20:33:53,687 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:33:53,688 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:33:53,688 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:33:53,689 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:33:53,690 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:33:53,690 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:33:53,691 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:33:53,691 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:33:53,691 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:33:53,692 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:33:53,693 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:33:53,693 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:33:53,693 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:33:53,694 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:33:53,694 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:33:53,694 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-18 20:33:53,694 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-18 20:33:53,695 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-18 20:33:53,695 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:33:53,695 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-18 20:33:53,695 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:33:53,695 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:33:53,696 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:33:53,696 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:33:53,696 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:33:53,696 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:33:53,698 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:33:53,699 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:33:53,699 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:33:53,699 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:33:53,699 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_73d46907-95d9-4bf6-ac75-471e10ba897a/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d46907-95d9-4bf6-ac75-471e10ba897a/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e14b8baad7c8f50637b16b3adcb891ef363d7563e7c4e0e74695e7b8e3d1787 [2022-11-18 20:33:54,047 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:33:54,081 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:33:54,087 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:33:54,089 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:33:54,090 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:33:54,092 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d46907-95d9-4bf6-ac75-471e10ba897a/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/heap-manipulation/dll_of_dll-1.i [2022-11-18 20:33:54,181 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d46907-95d9-4bf6-ac75-471e10ba897a/bin/uautomizer-TMbwUNV5ro/data/0d0247851/843f957601b44a2385d7f7468c4f90a3/FLAG3bf9e2c4f [2022-11-18 20:33:54,839 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:33:54,854 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d46907-95d9-4bf6-ac75-471e10ba897a/sv-benchmarks/c/heap-manipulation/dll_of_dll-1.i [2022-11-18 20:33:54,872 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d46907-95d9-4bf6-ac75-471e10ba897a/bin/uautomizer-TMbwUNV5ro/data/0d0247851/843f957601b44a2385d7f7468c4f90a3/FLAG3bf9e2c4f [2022-11-18 20:33:55,085 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d46907-95d9-4bf6-ac75-471e10ba897a/bin/uautomizer-TMbwUNV5ro/data/0d0247851/843f957601b44a2385d7f7468c4f90a3 [2022-11-18 20:33:55,088 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:33:55,090 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:33:55,096 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:33:55,097 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:33:55,101 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:33:55,103 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:33:55" (1/1) ... [2022-11-18 20:33:55,104 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a3d9f18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:33:55, skipping insertion in model container [2022-11-18 20:33:55,104 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:33:55" (1/1) ... [2022-11-18 20:33:55,114 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:33:55,178 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:33:55,562 WARN L234 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_73d46907-95d9-4bf6-ac75-471e10ba897a/sv-benchmarks/c/heap-manipulation/dll_of_dll-1.i[22634,22647] [2022-11-18 20:33:55,659 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:33:55,675 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:33:55,747 WARN L234 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_73d46907-95d9-4bf6-ac75-471e10ba897a/sv-benchmarks/c/heap-manipulation/dll_of_dll-1.i[22634,22647] [2022-11-18 20:33:55,773 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:33:55,829 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:33:55,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:33:55 WrapperNode [2022-11-18 20:33:55,832 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:33:55,833 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:33:55,834 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:33:55,834 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:33:55,843 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:33:55" (1/1) ... [2022-11-18 20:33:55,871 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:33:55" (1/1) ... [2022-11-18 20:33:55,924 INFO L138 Inliner]: procedures = 140, calls = 94, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 234 [2022-11-18 20:33:55,924 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:33:55,925 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:33:55,925 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:33:55,925 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:33:55,940 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:33:55" (1/1) ... [2022-11-18 20:33:55,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:33:55" (1/1) ... [2022-11-18 20:33:55,967 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:33:55" (1/1) ... [2022-11-18 20:33:55,967 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:33:55" (1/1) ... [2022-11-18 20:33:55,997 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:33:55" (1/1) ... [2022-11-18 20:33:56,006 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:33:55" (1/1) ... [2022-11-18 20:33:56,009 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:33:55" (1/1) ... [2022-11-18 20:33:56,026 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:33:55" (1/1) ... [2022-11-18 20:33:56,031 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:33:56,032 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:33:56,032 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:33:56,032 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:33:56,041 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:33:55" (1/1) ... [2022-11-18 20:33:56,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:33:56,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d46907-95d9-4bf6-ac75-471e10ba897a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:33:56,077 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d46907-95d9-4bf6-ac75-471e10ba897a/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:33:56,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d46907-95d9-4bf6-ac75-471e10ba897a/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:33:56,139 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2022-11-18 20:33:56,140 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2022-11-18 20:33:56,140 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2022-11-18 20:33:56,140 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2022-11-18 20:33:56,140 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 20:33:56,141 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:33:56,141 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2022-11-18 20:33:56,141 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2022-11-18 20:33:56,141 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:33:56,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 20:33:56,142 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-18 20:33:56,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-18 20:33:56,146 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-18 20:33:56,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:33:56,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-18 20:33:56,147 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2022-11-18 20:33:56,147 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2022-11-18 20:33:56,147 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2022-11-18 20:33:56,147 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2022-11-18 20:33:56,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:33:56,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:33:56,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:33:56,318 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:33:56,320 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:33:57,404 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:33:57,415 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:33:57,415 INFO L300 CfgBuilder]: Removed 38 assume(true) statements. [2022-11-18 20:33:57,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:33:57 BoogieIcfgContainer [2022-11-18 20:33:57,418 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:33:57,421 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:33:57,422 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:33:57,427 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:33:57,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:33:55" (1/3) ... [2022-11-18 20:33:57,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e6bd483 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:33:57, skipping insertion in model container [2022-11-18 20:33:57,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:33:55" (2/3) ... [2022-11-18 20:33:57,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e6bd483 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:33:57, skipping insertion in model container [2022-11-18 20:33:57,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:33:57" (3/3) ... [2022-11-18 20:33:57,431 INFO L112 eAbstractionObserver]: Analyzing ICFG dll_of_dll-1.i [2022-11-18 20:33:57,454 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:33:57,455 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 98 error locations. [2022-11-18 20:33:57,525 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:33:57,533 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;@521e66a5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:33:57,534 INFO L358 AbstractCegarLoop]: Starting to check reachability of 98 error locations. [2022-11-18 20:33:57,540 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) [2022-11-18 20:33:57,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-18 20:33:57,565 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:33:57,566 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:33:57,567 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)] === [2022-11-18 20:33:57,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:33:57,574 INFO L85 PathProgramCache]: Analyzing trace with hash -853608627, now seen corresponding path program 1 times [2022-11-18 20:33:57,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:33:57,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046885663] [2022-11-18 20:33:57,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:33:57,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:33:57,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:57,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:33:57,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:33:57,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046885663] [2022-11-18 20:33:57,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046885663] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:33:57,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:33:57,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:33:57,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727422599] [2022-11-18 20:33:57,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:33:57,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 20:33:57,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:33:57,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 20:33:57,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 20:33:57,940 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) [2022-11-18 20:33:58,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:33:58,011 INFO L93 Difference]: Finished difference Result 269 states and 299 transitions. [2022-11-18 20:33:58,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 20:33:58,014 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 [2022-11-18 20:33:58,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:33:58,028 INFO L225 Difference]: With dead ends: 269 [2022-11-18 20:33:58,028 INFO L226 Difference]: Without dead ends: 267 [2022-11-18 20:33:58,030 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 [2022-11-18 20:33:58,035 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 [2022-11-18 20:33:58,036 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] [2022-11-18 20:33:58,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2022-11-18 20:33:58,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2022-11-18 20:33:58,115 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) [2022-11-18 20:33:58,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 297 transitions. [2022-11-18 20:33:58,125 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 297 transitions. Word has length 9 [2022-11-18 20:33:58,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:33:58,126 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 297 transitions. [2022-11-18 20:33:58,126 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) [2022-11-18 20:33:58,126 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 297 transitions. [2022-11-18 20:33:58,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-18 20:33:58,127 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:33:58,127 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:33:58,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:33:58,128 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)] === [2022-11-18 20:33:58,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:33:58,130 INFO L85 PathProgramCache]: Analyzing trace with hash -853608565, now seen corresponding path program 1 times [2022-11-18 20:33:58,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:33:58,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131985667] [2022-11-18 20:33:58,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:33:58,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:33:58,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:58,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:33:58,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:33:58,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131985667] [2022-11-18 20:33:58,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131985667] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:33:58,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:33:58,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:33:58,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775432780] [2022-11-18 20:33:58,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:33:58,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:33:58,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:33:58,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:33:58,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:33:58,351 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) [2022-11-18 20:33:58,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:33:58,656 INFO L93 Difference]: Finished difference Result 267 states and 299 transitions. [2022-11-18 20:33:58,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:33:58,657 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 [2022-11-18 20:33:58,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:33:58,659 INFO L225 Difference]: With dead ends: 267 [2022-11-18 20:33:58,659 INFO L226 Difference]: Without dead ends: 267 [2022-11-18 20:33:58,660 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 [2022-11-18 20:33:58,662 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 [2022-11-18 20:33:58,662 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] [2022-11-18 20:33:58,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2022-11-18 20:33:58,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 265. [2022-11-18 20:33:58,680 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) [2022-11-18 20:33:58,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 295 transitions. [2022-11-18 20:33:58,683 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 295 transitions. Word has length 9 [2022-11-18 20:33:58,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:33:58,684 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 295 transitions. [2022-11-18 20:33:58,684 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) [2022-11-18 20:33:58,684 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 295 transitions. [2022-11-18 20:33:58,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-18 20:33:58,685 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:33:58,685 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:33:58,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:33:58,686 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)] === [2022-11-18 20:33:58,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:33:58,687 INFO L85 PathProgramCache]: Analyzing trace with hash -853608564, now seen corresponding path program 1 times [2022-11-18 20:33:58,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:33:58,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424235553] [2022-11-18 20:33:58,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:33:58,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:33:58,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:59,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:33:59,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:33:59,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424235553] [2022-11-18 20:33:59,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424235553] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:33:59,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:33:59,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:33:59,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972423675] [2022-11-18 20:33:59,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:33:59,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:33:59,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:33:59,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:33:59,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:33:59,025 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) [2022-11-18 20:33:59,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:33:59,165 INFO L93 Difference]: Finished difference Result 291 states and 329 transitions. [2022-11-18 20:33:59,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:33:59,166 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 [2022-11-18 20:33:59,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:33:59,169 INFO L225 Difference]: With dead ends: 291 [2022-11-18 20:33:59,170 INFO L226 Difference]: Without dead ends: 291 [2022-11-18 20:33:59,171 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 [2022-11-18 20:33:59,180 INFO L413 NwaCegarLoop]: 313 mSDtfsCounter, 19 mSDsluCounter, 887 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 1200 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:33:59,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 1200 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:33:59,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2022-11-18 20:33:59,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 283. [2022-11-18 20:33:59,217 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) [2022-11-18 20:33:59,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 323 transitions. [2022-11-18 20:33:59,222 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 323 transitions. Word has length 9 [2022-11-18 20:33:59,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:33:59,223 INFO L495 AbstractCegarLoop]: Abstraction has 283 states and 323 transitions. [2022-11-18 20:33:59,223 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) [2022-11-18 20:33:59,224 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 323 transitions. [2022-11-18 20:33:59,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-18 20:33:59,225 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:33:59,225 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:33:59,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:33:59,226 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)] === [2022-11-18 20:33:59,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:33:59,227 INFO L85 PathProgramCache]: Analyzing trace with hash 33414869, now seen corresponding path program 1 times [2022-11-18 20:33:59,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:33:59,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468642482] [2022-11-18 20:33:59,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:33:59,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:33:59,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:59,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:33:59,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:33:59,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468642482] [2022-11-18 20:33:59,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468642482] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:33:59,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:33:59,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:33:59,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419647099] [2022-11-18 20:33:59,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:33:59,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:33:59,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:33:59,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:33:59,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:33:59,297 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) [2022-11-18 20:33:59,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:33:59,518 INFO L93 Difference]: Finished difference Result 280 states and 320 transitions. [2022-11-18 20:33:59,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:33:59,519 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 [2022-11-18 20:33:59,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:33:59,522 INFO L225 Difference]: With dead ends: 280 [2022-11-18 20:33:59,522 INFO L226 Difference]: Without dead ends: 280 [2022-11-18 20:33:59,523 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 [2022-11-18 20:33:59,534 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 [2022-11-18 20:33:59,536 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] [2022-11-18 20:33:59,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2022-11-18 20:33:59,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2022-11-18 20:33:59,555 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) [2022-11-18 20:33:59,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 320 transitions. [2022-11-18 20:33:59,558 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 320 transitions. Word has length 11 [2022-11-18 20:33:59,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:33:59,559 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 320 transitions. [2022-11-18 20:33:59,559 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) [2022-11-18 20:33:59,559 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 320 transitions. [2022-11-18 20:33:59,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-18 20:33:59,560 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:33:59,560 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:33:59,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:33:59,561 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)] === [2022-11-18 20:33:59,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:33:59,563 INFO L85 PathProgramCache]: Analyzing trace with hash 33414870, now seen corresponding path program 1 times [2022-11-18 20:33:59,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:33:59,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791104715] [2022-11-18 20:33:59,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:33:59,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:33:59,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:59,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:33:59,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:33:59,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791104715] [2022-11-18 20:33:59,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791104715] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:33:59,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:33:59,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:33:59,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909911524] [2022-11-18 20:33:59,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:33:59,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:33:59,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:33:59,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:33:59,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:33:59,741 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) [2022-11-18 20:33:59,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:33:59,937 INFO L93 Difference]: Finished difference Result 277 states and 317 transitions. [2022-11-18 20:33:59,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:33:59,938 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 [2022-11-18 20:33:59,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:33:59,941 INFO L225 Difference]: With dead ends: 277 [2022-11-18 20:33:59,941 INFO L226 Difference]: Without dead ends: 277 [2022-11-18 20:33:59,941 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 [2022-11-18 20:33:59,942 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 [2022-11-18 20:33:59,943 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] [2022-11-18 20:33:59,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2022-11-18 20:33:59,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 277. [2022-11-18 20:33:59,952 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) [2022-11-18 20:33:59,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 317 transitions. [2022-11-18 20:33:59,955 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 317 transitions. Word has length 11 [2022-11-18 20:33:59,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:33:59,955 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 317 transitions. [2022-11-18 20:33:59,956 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) [2022-11-18 20:33:59,956 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 317 transitions. [2022-11-18 20:33:59,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-18 20:33:59,957 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:33:59,957 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:33:59,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:33:59,958 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)] === [2022-11-18 20:33:59,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:33:59,959 INFO L85 PathProgramCache]: Analyzing trace with hash -226556130, now seen corresponding path program 1 times [2022-11-18 20:33:59,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:33:59,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880828625] [2022-11-18 20:33:59,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:33:59,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:33:59,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:00,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:34:00,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:34:00,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880828625] [2022-11-18 20:34:00,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880828625] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:34:00,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:34:00,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:34:00,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698534183] [2022-11-18 20:34:00,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:34:00,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:34:00,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:34:00,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:34:00,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:34:00,260 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) [2022-11-18 20:34:00,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:34:00,820 INFO L93 Difference]: Finished difference Result 300 states and 343 transitions. [2022-11-18 20:34:00,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 20:34:00,821 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 [2022-11-18 20:34:00,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:34:00,827 INFO L225 Difference]: With dead ends: 300 [2022-11-18 20:34:00,827 INFO L226 Difference]: Without dead ends: 300 [2022-11-18 20:34:00,827 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 [2022-11-18 20:34:00,829 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 [2022-11-18 20:34:00,829 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] [2022-11-18 20:34:00,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2022-11-18 20:34:00,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 289. [2022-11-18 20:34:00,842 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) [2022-11-18 20:34:00,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 332 transitions. [2022-11-18 20:34:00,845 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 332 transitions. Word has length 16 [2022-11-18 20:34:00,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:34:00,846 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 332 transitions. [2022-11-18 20:34:00,846 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) [2022-11-18 20:34:00,846 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 332 transitions. [2022-11-18 20:34:00,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-18 20:34:00,848 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:34:00,848 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:34:00,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 20:34:00,849 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)] === [2022-11-18 20:34:00,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:34:00,849 INFO L85 PathProgramCache]: Analyzing trace with hash -226556129, now seen corresponding path program 1 times [2022-11-18 20:34:00,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:34:00,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282042067] [2022-11-18 20:34:00,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:00,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:34:00,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:01,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:34:01,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:34:01,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282042067] [2022-11-18 20:34:01,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282042067] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:34:01,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:34:01,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:34:01,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233754377] [2022-11-18 20:34:01,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:34:01,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:34:01,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:34:01,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:34:01,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:34:01,329 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) [2022-11-18 20:34:02,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:34:02,079 INFO L93 Difference]: Finished difference Result 299 states and 342 transitions. [2022-11-18 20:34:02,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:34:02,080 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 [2022-11-18 20:34:02,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:34:02,082 INFO L225 Difference]: With dead ends: 299 [2022-11-18 20:34:02,082 INFO L226 Difference]: Without dead ends: 299 [2022-11-18 20:34:02,082 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 [2022-11-18 20:34:02,083 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 [2022-11-18 20:34:02,083 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] [2022-11-18 20:34:02,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2022-11-18 20:34:02,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 289. [2022-11-18 20:34:02,092 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) [2022-11-18 20:34:02,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 330 transitions. [2022-11-18 20:34:02,095 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 330 transitions. Word has length 16 [2022-11-18 20:34:02,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:34:02,096 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 330 transitions. [2022-11-18 20:34:02,096 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) [2022-11-18 20:34:02,096 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 330 transitions. [2022-11-18 20:34:02,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 20:34:02,097 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:34:02,097 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:34:02,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:34:02,098 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)] === [2022-11-18 20:34:02,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:34:02,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1322891007, now seen corresponding path program 1 times [2022-11-18 20:34:02,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:34:02,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429982277] [2022-11-18 20:34:02,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:02,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:34:02,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:02,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:34:02,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:34:02,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429982277] [2022-11-18 20:34:02,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429982277] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:34:02,188 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:34:02,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:34:02,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723165039] [2022-11-18 20:34:02,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:34:02,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:34:02,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:34:02,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:34:02,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:34:02,190 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) [2022-11-18 20:34:02,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:34:02,514 INFO L93 Difference]: Finished difference Result 288 states and 329 transitions. [2022-11-18 20:34:02,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:34:02,515 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 [2022-11-18 20:34:02,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:34:02,518 INFO L225 Difference]: With dead ends: 288 [2022-11-18 20:34:02,518 INFO L226 Difference]: Without dead ends: 288 [2022-11-18 20:34:02,519 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 [2022-11-18 20:34:02,522 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 [2022-11-18 20:34:02,523 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] [2022-11-18 20:34:02,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2022-11-18 20:34:02,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2022-11-18 20:34:02,538 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) [2022-11-18 20:34:02,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 329 transitions. [2022-11-18 20:34:02,542 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 329 transitions. Word has length 18 [2022-11-18 20:34:02,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:34:02,542 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 329 transitions. [2022-11-18 20:34:02,542 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) [2022-11-18 20:34:02,543 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 329 transitions. [2022-11-18 20:34:02,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 20:34:02,544 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:34:02,545 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:34:02,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 20:34:02,545 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)] === [2022-11-18 20:34:02,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:34:02,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1322891008, now seen corresponding path program 1 times [2022-11-18 20:34:02,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:34:02,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799093521] [2022-11-18 20:34:02,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:02,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:34:02,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:02,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:34:02,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:34:02,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799093521] [2022-11-18 20:34:02,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799093521] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:34:02,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:34:02,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:34:02,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409779235] [2022-11-18 20:34:02,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:34:02,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:34:02,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:34:02,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:34:02,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:34:02,731 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) [2022-11-18 20:34:03,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:34:03,037 INFO L93 Difference]: Finished difference Result 287 states and 328 transitions. [2022-11-18 20:34:03,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:34:03,038 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 [2022-11-18 20:34:03,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:34:03,040 INFO L225 Difference]: With dead ends: 287 [2022-11-18 20:34:03,040 INFO L226 Difference]: Without dead ends: 287 [2022-11-18 20:34:03,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:34:03,041 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 [2022-11-18 20:34:03,042 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] [2022-11-18 20:34:03,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-11-18 20:34:03,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2022-11-18 20:34:03,052 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) [2022-11-18 20:34:03,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 328 transitions. [2022-11-18 20:34:03,055 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 328 transitions. Word has length 18 [2022-11-18 20:34:03,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:34:03,055 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 328 transitions. [2022-11-18 20:34:03,055 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) [2022-11-18 20:34:03,056 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 328 transitions. [2022-11-18 20:34:03,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-18 20:34:03,057 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:34:03,057 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] [2022-11-18 20:34:03,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 20:34:03,059 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)] === [2022-11-18 20:34:03,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:34:03,060 INFO L85 PathProgramCache]: Analyzing trace with hash -12061856, now seen corresponding path program 1 times [2022-11-18 20:34:03,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:34:03,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036472074] [2022-11-18 20:34:03,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:03,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:34:03,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:03,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:34:03,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:34:03,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036472074] [2022-11-18 20:34:03,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036472074] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:34:03,712 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:34:03,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 20:34:03,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736151863] [2022-11-18 20:34:03,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:34:03,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:34:03,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:34:03,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:34:03,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:34:03,715 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) [2022-11-18 20:34:04,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:34:04,443 INFO L93 Difference]: Finished difference Result 326 states and 372 transitions. [2022-11-18 20:34:04,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:34:04,444 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 [2022-11-18 20:34:04,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:34:04,446 INFO L225 Difference]: With dead ends: 326 [2022-11-18 20:34:04,446 INFO L226 Difference]: Without dead ends: 326 [2022-11-18 20:34:04,447 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 [2022-11-18 20:34:04,447 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 48 mSDsluCounter, 1508 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 1780 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:34:04,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 1780 Invalid, 554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 20:34:04,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2022-11-18 20:34:04,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 307. [2022-11-18 20:34:04,465 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) [2022-11-18 20:34:04,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 356 transitions. [2022-11-18 20:34:04,468 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 356 transitions. Word has length 20 [2022-11-18 20:34:04,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:34:04,470 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 356 transitions. [2022-11-18 20:34:04,471 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) [2022-11-18 20:34:04,471 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 356 transitions. [2022-11-18 20:34:04,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-18 20:34:04,472 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:34:04,472 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] [2022-11-18 20:34:04,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 20:34:04,473 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)] === [2022-11-18 20:34:04,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:34:04,474 INFO L85 PathProgramCache]: Analyzing trace with hash 551710607, now seen corresponding path program 1 times [2022-11-18 20:34:04,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:34:04,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043610553] [2022-11-18 20:34:04,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:04,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:34:04,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:04,630 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 20:34:04,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:34:04,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043610553] [2022-11-18 20:34:04,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043610553] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:34:04,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:34:04,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:34:04,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455211766] [2022-11-18 20:34:04,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:34:04,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:34:04,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:34:04,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:34:04,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:34:04,634 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) [2022-11-18 20:34:04,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:34:04,807 INFO L93 Difference]: Finished difference Result 305 states and 354 transitions. [2022-11-18 20:34:04,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:34:04,808 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 [2022-11-18 20:34:04,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:34:04,810 INFO L225 Difference]: With dead ends: 305 [2022-11-18 20:34:04,810 INFO L226 Difference]: Without dead ends: 305 [2022-11-18 20:34:04,811 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 [2022-11-18 20:34:04,811 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 [2022-11-18 20:34:04,812 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] [2022-11-18 20:34:04,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2022-11-18 20:34:04,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 305. [2022-11-18 20:34:04,821 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) [2022-11-18 20:34:04,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 354 transitions. [2022-11-18 20:34:04,824 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 354 transitions. Word has length 27 [2022-11-18 20:34:04,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:34:04,824 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 354 transitions. [2022-11-18 20:34:04,824 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) [2022-11-18 20:34:04,825 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 354 transitions. [2022-11-18 20:34:04,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-18 20:34:04,826 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:34:04,826 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] [2022-11-18 20:34:04,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 20:34:04,827 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)] === [2022-11-18 20:34:04,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:34:04,827 INFO L85 PathProgramCache]: Analyzing trace with hash 67060467, now seen corresponding path program 1 times [2022-11-18 20:34:04,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:34:04,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364203853] [2022-11-18 20:34:04,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:04,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:34:04,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:05,227 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:34:05,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:34:05,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364203853] [2022-11-18 20:34:05,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364203853] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:34:05,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:34:05,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:34:05,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607486905] [2022-11-18 20:34:05,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:34:05,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:34:05,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:34:05,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:34:05,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:34:05,230 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) [2022-11-18 20:34:05,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:34:05,794 INFO L93 Difference]: Finished difference Result 304 states and 353 transitions. [2022-11-18 20:34:05,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:34:05,794 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 [2022-11-18 20:34:05,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:34:05,796 INFO L225 Difference]: With dead ends: 304 [2022-11-18 20:34:05,796 INFO L226 Difference]: Without dead ends: 304 [2022-11-18 20:34:05,797 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 [2022-11-18 20:34:05,797 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 [2022-11-18 20:34:05,798 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] [2022-11-18 20:34:05,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-11-18 20:34:05,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 303. [2022-11-18 20:34:05,810 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) [2022-11-18 20:34:05,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 352 transitions. [2022-11-18 20:34:05,812 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 352 transitions. Word has length 31 [2022-11-18 20:34:05,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:34:05,813 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 352 transitions. [2022-11-18 20:34:05,813 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) [2022-11-18 20:34:05,814 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 352 transitions. [2022-11-18 20:34:05,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-18 20:34:05,823 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:34:05,823 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] [2022-11-18 20:34:05,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 20:34:05,824 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)] === [2022-11-18 20:34:05,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:34:05,824 INFO L85 PathProgramCache]: Analyzing trace with hash 67060466, now seen corresponding path program 1 times [2022-11-18 20:34:05,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:34:05,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125561886] [2022-11-18 20:34:05,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:05,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:34:05,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:06,105 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:34:06,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:34:06,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125561886] [2022-11-18 20:34:06,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125561886] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:34:06,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:34:06,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:34:06,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144508226] [2022-11-18 20:34:06,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:34:06,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:34:06,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:34:06,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:34:06,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:34:06,108 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) [2022-11-18 20:34:06,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:34:06,501 INFO L93 Difference]: Finished difference Result 301 states and 350 transitions. [2022-11-18 20:34:06,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:34:06,502 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 [2022-11-18 20:34:06,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:34:06,504 INFO L225 Difference]: With dead ends: 301 [2022-11-18 20:34:06,504 INFO L226 Difference]: Without dead ends: 301 [2022-11-18 20:34:06,504 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 [2022-11-18 20:34:06,505 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, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:34:06,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 975 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 20:34:06,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2022-11-18 20:34:06,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2022-11-18 20:34:06,514 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) [2022-11-18 20:34:06,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 350 transitions. [2022-11-18 20:34:06,516 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 350 transitions. Word has length 31 [2022-11-18 20:34:06,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:34:06,517 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 350 transitions. [2022-11-18 20:34:06,517 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) [2022-11-18 20:34:06,518 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 350 transitions. [2022-11-18 20:34:06,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-18 20:34:06,518 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:34:06,519 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] [2022-11-18 20:34:06,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 20:34:06,519 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)] === [2022-11-18 20:34:06,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:34:06,520 INFO L85 PathProgramCache]: Analyzing trace with hash 20600531, now seen corresponding path program 1 times [2022-11-18 20:34:06,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:34:06,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552576900] [2022-11-18 20:34:06,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:06,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:34:06,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:06,624 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 20:34:06,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:34:06,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552576900] [2022-11-18 20:34:06,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552576900] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:34:06,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:34:06,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:34:06,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162020259] [2022-11-18 20:34:06,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:34:06,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:34:06,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:34:06,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:34:06,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:34:06,628 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) [2022-11-18 20:34:06,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:34:06,919 INFO L93 Difference]: Finished difference Result 300 states and 349 transitions. [2022-11-18 20:34:06,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:34:06,920 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 [2022-11-18 20:34:06,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:34:06,921 INFO L225 Difference]: With dead ends: 300 [2022-11-18 20:34:06,922 INFO L226 Difference]: Without dead ends: 300 [2022-11-18 20:34:06,922 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 [2022-11-18 20:34:06,923 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 [2022-11-18 20:34:06,923 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] [2022-11-18 20:34:06,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2022-11-18 20:34:06,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 300. [2022-11-18 20:34:06,931 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) [2022-11-18 20:34:06,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 349 transitions. [2022-11-18 20:34:06,933 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 349 transitions. Word has length 33 [2022-11-18 20:34:06,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:34:06,933 INFO L495 AbstractCegarLoop]: Abstraction has 300 states and 349 transitions. [2022-11-18 20:34:06,934 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) [2022-11-18 20:34:06,934 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 349 transitions. [2022-11-18 20:34:06,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-18 20:34:06,935 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:34:06,935 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] [2022-11-18 20:34:06,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 20:34:06,935 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)] === [2022-11-18 20:34:06,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:34:06,936 INFO L85 PathProgramCache]: Analyzing trace with hash 20600532, now seen corresponding path program 1 times [2022-11-18 20:34:06,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:34:06,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965419501] [2022-11-18 20:34:06,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:06,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:34:06,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:07,170 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 20:34:07,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:34:07,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965419501] [2022-11-18 20:34:07,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965419501] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:34:07,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:34:07,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:34:07,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65929234] [2022-11-18 20:34:07,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:34:07,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:34:07,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:34:07,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:34:07,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:34:07,174 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) [2022-11-18 20:34:07,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:34:07,514 INFO L93 Difference]: Finished difference Result 299 states and 348 transitions. [2022-11-18 20:34:07,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:34:07,515 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 [2022-11-18 20:34:07,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:34:07,517 INFO L225 Difference]: With dead ends: 299 [2022-11-18 20:34:07,517 INFO L226 Difference]: Without dead ends: 299 [2022-11-18 20:34:07,518 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 [2022-11-18 20:34:07,518 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 [2022-11-18 20:34:07,519 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] [2022-11-18 20:34:07,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2022-11-18 20:34:07,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2022-11-18 20:34:07,526 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) [2022-11-18 20:34:07,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 348 transitions. [2022-11-18 20:34:07,528 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 348 transitions. Word has length 33 [2022-11-18 20:34:07,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:34:07,529 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 348 transitions. [2022-11-18 20:34:07,529 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) [2022-11-18 20:34:07,529 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 348 transitions. [2022-11-18 20:34:07,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-18 20:34:07,530 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:34:07,530 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] [2022-11-18 20:34:07,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 20:34:07,531 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)] === [2022-11-18 20:34:07,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:34:07,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1677723852, now seen corresponding path program 1 times [2022-11-18 20:34:07,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:34:07,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039696394] [2022-11-18 20:34:07,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:07,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:34:07,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:08,124 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:34:08,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:34:08,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039696394] [2022-11-18 20:34:08,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039696394] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:34:08,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:34:08,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 20:34:08,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604650668] [2022-11-18 20:34:08,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:34:08,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 20:34:08,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:34:08,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 20:34:08,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:34:08,128 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) [2022-11-18 20:34:08,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:34:08,684 INFO L93 Difference]: Finished difference Result 313 states and 363 transitions. [2022-11-18 20:34:08,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:34:08,685 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 [2022-11-18 20:34:08,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:34:08,687 INFO L225 Difference]: With dead ends: 313 [2022-11-18 20:34:08,687 INFO L226 Difference]: Without dead ends: 313 [2022-11-18 20:34:08,687 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 [2022-11-18 20:34:08,688 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 29 mSDsluCounter, 1316 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 1587 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:34:08,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 1587 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 20:34:08,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2022-11-18 20:34:08,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 312. [2022-11-18 20:34:08,697 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) [2022-11-18 20:34:08,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 362 transitions. [2022-11-18 20:34:08,699 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 362 transitions. Word has length 35 [2022-11-18 20:34:08,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:34:08,700 INFO L495 AbstractCegarLoop]: Abstraction has 312 states and 362 transitions. [2022-11-18 20:34:08,700 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) [2022-11-18 20:34:08,700 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 362 transitions. [2022-11-18 20:34:08,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-18 20:34:08,703 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:34:08,703 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] [2022-11-18 20:34:08,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 20:34:08,704 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)] === [2022-11-18 20:34:08,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:34:08,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1451018694, now seen corresponding path program 1 times [2022-11-18 20:34:08,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:34:08,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88964511] [2022-11-18 20:34:08,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:08,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:34:08,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:09,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 20:34:09,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:09,942 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:34:09,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:34:09,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88964511] [2022-11-18 20:34:09,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88964511] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:34:09,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011622444] [2022-11-18 20:34:09,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:09,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:34:09,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d46907-95d9-4bf6-ac75-471e10ba897a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:34:09,950 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d46907-95d9-4bf6-ac75-471e10ba897a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:34:09,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d46907-95d9-4bf6-ac75-471e10ba897a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:34:10,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:10,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 61 conjunts are in the unsatisfiable core [2022-11-18 20:34:10,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:34:10,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 20:34:10,543 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 20:34:10,755 INFO L321 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-11-18 20:34:10,755 INFO L350 Elim1Store]: Elim1 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 18 [2022-11-18 20:34:10,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:34:10,863 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 20:34:10,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:34:10,891 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 20:34:11,032 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-18 20:34:11,092 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:34:11,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:34:15,309 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_578 (Array Int Int)) (|v_##fun~$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 [2022-11-18 20:34:15,328 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_578 (Array Int Int)) (|v_##fun~$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 [2022-11-18 20:34:15,353 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_578 (Array Int Int)) (|v_##fun~$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 [2022-11-18 20:34:15,535 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:34:15,536 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2022-11-18 20:34:15,560 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 34 [2022-11-18 20:34:15,566 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 38 [2022-11-18 20:34:15,574 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-18 20:34:15,781 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:34:15,781 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2022-11-18 20:34:15,785 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:34:15,796 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:34:15,797 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 24 [2022-11-18 20:34:21,024 WARN L233 SmtUtils]: Spent 5.09s on a formula simplification that was a NOOP. DAG size: 28 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:34:29,998 WARN L233 SmtUtils]: Spent 8.57s on a formula simplification that was a NOOP. DAG size: 28 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:34:44,189 WARN L233 SmtUtils]: Spent 12.01s on a formula simplification that was a NOOP. DAG size: 28 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:34:44,449 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2022-11-18 20:34:44,466 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2022-11-18 20:34:44,533 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 1 not checked. [2022-11-18 20:34:44,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1011622444] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:34:44,534 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:34:44,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14, 14] total 37 [2022-11-18 20:34:44,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524387668] [2022-11-18 20:34:44,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:34:44,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-18 20:34:44,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:34:44,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-18 20:34:44,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1080, Unknown=10, NotChecked=204, Total=1406 [2022-11-18 20:34:44,538 INFO L87 Difference]: Start difference. First operand 312 states and 362 transitions. Second operand has 38 states, 32 states have (on average 2.71875) internal successors, (87), 32 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) [2022-11-18 20:34:47,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:34:47,933 INFO L93 Difference]: Finished difference Result 335 states and 387 transitions. [2022-11-18 20:34:47,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 20:34:47,934 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 32 states have (on average 2.71875) internal successors, (87), 32 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 [2022-11-18 20:34:47,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:34:47,935 INFO L225 Difference]: With dead ends: 335 [2022-11-18 20:34:47,935 INFO L226 Difference]: Without dead ends: 335 [2022-11-18 20:34:47,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 86 SyntacticMatches, 4 SemanticMatches, 52 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 34.3s TimeCoverageRelationStatistics Valid=413, Invalid=2139, Unknown=10, NotChecked=300, Total=2862 [2022-11-18 20:34:47,937 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 287 mSDsluCounter, 3221 mSDsCounter, 0 mSdLazyCounter, 1775 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 3425 SdHoareTripleChecker+Invalid, 3172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1335 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:34:47,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 3425 Invalid, 3172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1775 Invalid, 0 Unknown, 1335 Unchecked, 1.9s Time] [2022-11-18 20:34:47,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2022-11-18 20:34:47,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 328. [2022-11-18 20:34:47,946 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) [2022-11-18 20:34:47,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 379 transitions. [2022-11-18 20:34:47,951 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 379 transitions. Word has length 51 [2022-11-18 20:34:47,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:34:47,951 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 379 transitions. [2022-11-18 20:34:47,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 32 states have (on average 2.71875) internal successors, (87), 32 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) [2022-11-18 20:34:47,952 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 379 transitions. [2022-11-18 20:34:47,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-18 20:34:47,953 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:34:47,953 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] [2022-11-18 20:34:47,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d46907-95d9-4bf6-ac75-471e10ba897a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:34:48,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d46907-95d9-4bf6-ac75-471e10ba897a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-18 20:34:48,160 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)] === [2022-11-18 20:34:48,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:34:48,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1451018695, now seen corresponding path program 1 times [2022-11-18 20:34:48,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:34:48,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702687773] [2022-11-18 20:34:48,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:48,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:34:48,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:49,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 20:34:49,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:49,931 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:34:49,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:34:49,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702687773] [2022-11-18 20:34:49,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702687773] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:34:49,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907526648] [2022-11-18 20:34:49,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:49,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:34:49,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d46907-95d9-4bf6-ac75-471e10ba897a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:34:49,934 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d46907-95d9-4bf6-ac75-471e10ba897a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:34:49,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d46907-95d9-4bf6-ac75-471e10ba897a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:34:50,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:50,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 82 conjunts are in the unsatisfiable core [2022-11-18 20:34:50,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:34:50,279 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 20:34:50,727 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 20:34:50,736 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 20:34:51,152 INFO L321 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-11-18 20:34:51,152 INFO L350 Elim1Store]: Elim1 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 [2022-11-18 20:34:51,171 INFO L350 Elim1Store]: Elim1 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 [2022-11-18 20:34:51,272 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:34:51,286 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-18 20:34:51,310 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-18 20:34:51,318 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:34:51,417 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 20:34:51,421 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-18 20:34:51,556 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:34:51,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:34:51,817 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_769 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$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$~TO~VOID_dll_insert_slave_~dll#1.offset|) 4))) (forall ((v_ArrVal_768 (Array Int Int)) (v_ArrVal_769 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$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$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| v_ArrVal_768) |c_##fun~$Pointer$~TO~VOID_dll_insert_slave_~dll#1.base|) |c_##fun~$Pointer$~TO~VOID_dll_insert_slave_~dll#1.offset|))))) is different from false [2022-11-18 20:34:55,073 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-18 20:34:55,073 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 81 treesize of output 1 [2022-11-18 20:34:55,172 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:34:55,173 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 41 [2022-11-18 20:34:55,183 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:34:55,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 33 [2022-11-18 20:34:55,200 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:34:55,201 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 61 [2022-11-18 20:34:55,226 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:34:55,227 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 93 [2022-11-18 20:34:55,256 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 36 [2022-11-18 20:34:55,264 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 70 [2022-11-18 20:34:55,473 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:34:55,473 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 21 [2022-11-18 20:34:55,477 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:34:55,489 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:34:55,490 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 21 [2022-11-18 20:35:13,856 WARN L233 SmtUtils]: Spent 18.20s on a formula simplification. DAG size of input: 45 DAG size of output: 35 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:35:20,949 WARN L233 SmtUtils]: Spent 6.12s on a formula simplification that was a NOOP. DAG size: 37 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:35:20,985 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 66 [2022-11-18 20:35:21,299 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:35:21,300 INFO L350 Elim1Store]: Elim1 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 43 treesize of output 61 [2022-11-18 20:35:21,409 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 3 not checked. [2022-11-18 20:35:21,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907526648] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:35:21,413 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:35:21,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 14] total 40 [2022-11-18 20:35:21,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367505843] [2022-11-18 20:35:21,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:35:21,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-18 20:35:21,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:21,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-18 20:35:21,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=1453, Unknown=2, NotChecked=76, Total=1640 [2022-11-18 20:35:21,419 INFO L87 Difference]: Start difference. First operand 328 states and 379 transitions. Second operand has 41 states, 36 states have (on average 2.611111111111111) internal successors, (94), 36 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) [2022-11-18 20:35:27,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:35:27,153 INFO L93 Difference]: Finished difference Result 332 states and 381 transitions. [2022-11-18 20:35:27,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 20:35:27,154 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 36 states have (on average 2.611111111111111) internal successors, (94), 36 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 [2022-11-18 20:35:27,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:35:27,156 INFO L225 Difference]: With dead ends: 332 [2022-11-18 20:35:27,156 INFO L226 Difference]: Without dead ends: 332 [2022-11-18 20:35:27,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 78 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 32.0s TimeCoverageRelationStatistics Valid=455, Invalid=2627, Unknown=2, NotChecked=108, Total=3192 [2022-11-18 20:35:27,158 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 275 mSDsluCounter, 3267 mSDsCounter, 0 mSdLazyCounter, 3025 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 3472 SdHoareTripleChecker+Invalid, 4335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 3025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1237 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:35:27,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 3472 Invalid, 4335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 3025 Invalid, 0 Unknown, 1237 Unchecked, 3.0s Time] [2022-11-18 20:35:27,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2022-11-18 20:35:27,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 327. [2022-11-18 20:35:27,166 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) [2022-11-18 20:35:27,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 376 transitions. [2022-11-18 20:35:27,168 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 376 transitions. Word has length 51 [2022-11-18 20:35:27,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:35:27,169 INFO L495 AbstractCegarLoop]: Abstraction has 327 states and 376 transitions. [2022-11-18 20:35:27,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 36 states have (on average 2.611111111111111) internal successors, (94), 36 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) [2022-11-18 20:35:27,170 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 376 transitions. [2022-11-18 20:35:27,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-18 20:35:27,170 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:35:27,171 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] [2022-11-18 20:35:27,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d46907-95d9-4bf6-ac75-471e10ba897a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:35:27,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d46907-95d9-4bf6-ac75-471e10ba897a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-18 20:35:27,379 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)] === [2022-11-18 20:35:27,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:27,379 INFO L85 PathProgramCache]: Analyzing trace with hash -470108245, now seen corresponding path program 1 times [2022-11-18 20:35:27,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:27,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101840348] [2022-11-18 20:35:27,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:27,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:27,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:27,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 20:35:27,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:27,627 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:35:27,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:27,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101840348] [2022-11-18 20:35:27,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101840348] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:35:27,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268027338] [2022-11-18 20:35:27,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:27,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:35:27,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d46907-95d9-4bf6-ac75-471e10ba897a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:35:27,631 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d46907-95d9-4bf6-ac75-471e10ba897a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:35:27,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d46907-95d9-4bf6-ac75-471e10ba897a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:35:27,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:27,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:35:27,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:35:27,942 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:35:27,943 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:35:27,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268027338] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:35:27,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:35:27,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 6 [2022-11-18 20:35:27,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282362208] [2022-11-18 20:35:27,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:35:27,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:35:27,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:27,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:35:27,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:35:27,947 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) [2022-11-18 20:35:28,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:35:28,017 INFO L93 Difference]: Finished difference Result 313 states and 349 transitions. [2022-11-18 20:35:28,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:35:28,018 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 [2022-11-18 20:35:28,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:35:28,020 INFO L225 Difference]: With dead ends: 313 [2022-11-18 20:35:28,020 INFO L226 Difference]: Without dead ends: 313 [2022-11-18 20:35:28,021 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 [2022-11-18 20:35:28,022 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 [2022-11-18 20:35:28,024 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] [2022-11-18 20:35:28,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2022-11-18 20:35:28,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2022-11-18 20:35:28,032 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) [2022-11-18 20:35:28,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 349 transitions. [2022-11-18 20:35:28,035 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 349 transitions. Word has length 54 [2022-11-18 20:35:28,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:35:28,036 INFO L495 AbstractCegarLoop]: Abstraction has 313 states and 349 transitions. [2022-11-18 20:35:28,037 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) [2022-11-18 20:35:28,038 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 349 transitions. [2022-11-18 20:35:28,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-18 20:35:28,038 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:35:28,039 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] [2022-11-18 20:35:28,052 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d46907-95d9-4bf6-ac75-471e10ba897a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 20:35:28,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d46907-95d9-4bf6-ac75-471e10ba897a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:35:28,247 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)] === [2022-11-18 20:35:28,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:28,247 INFO L85 PathProgramCache]: Analyzing trace with hash -996489836, now seen corresponding path program 1 times [2022-11-18 20:35:28,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:28,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451281286] [2022-11-18 20:35:28,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:28,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:28,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:28,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-18 20:35:28,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:29,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-18 20:35:29,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:29,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:35:29,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:30,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:35:30,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:30,677 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:35:30,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:30,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451281286] [2022-11-18 20:35:30,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451281286] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:35:30,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386525643] [2022-11-18 20:35:30,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:30,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:35:30,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d46907-95d9-4bf6-ac75-471e10ba897a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:35:30,680 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d46907-95d9-4bf6-ac75-471e10ba897a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:35:30,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d46907-95d9-4bf6-ac75-471e10ba897a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 20:35:30,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:30,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 58 conjunts are in the unsatisfiable core [2022-11-18 20:35:31,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:35:31,153 INFO L350 Elim1Store]: Elim1 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 [2022-11-18 20:35:31,251 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2022-11-18 20:35:31,928 WARN L859 $PredicateComparison]: unable to prove that (exists ((|##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| Int) (v_ArrVal_1295 (Array Int Int))) (and (< |##fun~$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$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| v_ArrVal_1295) |c_##fun~$Pointer$~TO~VOID_#in~10#1.base|) |c_##fun~$Pointer$~TO~VOID_#in~10#1.offset|)))) is different from true [2022-11-18 20:35:31,941 WARN L859 $PredicateComparison]: unable to prove that (exists ((|##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| Int) (v_ArrVal_1295 (Array Int Int))) (and (< |##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| |c_#StackHeapBarrier|) (= (select (select (store |c_old(#memory_$Pointer$.base)| |##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| v_ArrVal_1295) |c_##fun~$Pointer$~TO~VOID_#in~10#1.base|) |c_##fun~$Pointer$~TO~VOID_#in~10#1.offset|) 0))) is different from true [2022-11-18 20:35:31,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:35:31,977 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 5 not checked. [2022-11-18 20:35:31,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:35:32,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386525643] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:35:32,897 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:35:32,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 32 [2022-11-18 20:35:32,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502019792] [2022-11-18 20:35:32,897 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:35:32,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-18 20:35:32,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:32,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-18 20:35:32,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=849, Unknown=7, NotChecked=118, Total=1056 [2022-11-18 20:35:32,899 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) [2022-11-18 20:35:35,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:35:35,727 INFO L93 Difference]: Finished difference Result 333 states and 373 transitions. [2022-11-18 20:35:35,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 20:35:35,727 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 [2022-11-18 20:35:35,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:35:35,729 INFO L225 Difference]: With dead ends: 333 [2022-11-18 20:35:35,729 INFO L226 Difference]: Without dead ends: 329 [2022-11-18 20:35:35,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=199, Invalid=1957, Unknown=14, NotChecked=182, Total=2352 [2022-11-18 20:35:35,731 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 85 mSDsluCounter, 3261 mSDsCounter, 0 mSdLazyCounter, 1728 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 3461 SdHoareTripleChecker+Invalid, 3013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1257 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:35:35,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 3461 Invalid, 3013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1728 Invalid, 0 Unknown, 1257 Unchecked, 1.7s Time] [2022-11-18 20:35:35,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2022-11-18 20:35:35,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 313. [2022-11-18 20:35:35,739 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) [2022-11-18 20:35:35,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 348 transitions. [2022-11-18 20:35:35,741 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 348 transitions. Word has length 64 [2022-11-18 20:35:35,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:35:35,741 INFO L495 AbstractCegarLoop]: Abstraction has 313 states and 348 transitions. [2022-11-18 20:35:35,742 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) [2022-11-18 20:35:35,742 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 348 transitions. [2022-11-18 20:35:35,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-18 20:35:35,743 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:35:35,743 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] [2022-11-18 20:35:35,756 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d46907-95d9-4bf6-ac75-471e10ba897a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 20:35:35,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d46907-95d9-4bf6-ac75-471e10ba897a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:35:35,951 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)] === [2022-11-18 20:35:35,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:35,951 INFO L85 PathProgramCache]: Analyzing trace with hash 2033150353, now seen corresponding path program 1 times [2022-11-18 20:35:35,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:35,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469380299] [2022-11-18 20:35:35,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:35,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:36,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:37,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-18 20:35:37,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:38,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-18 20:35:38,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:42,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:35:42,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:43,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:35:43,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:45,229 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:35:45,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:45,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469380299] [2022-11-18 20:35:45,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469380299] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:35:45,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491449821] [2022-11-18 20:35:45,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:45,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:35:45,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d46907-95d9-4bf6-ac75-471e10ba897a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:35:45,232 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d46907-95d9-4bf6-ac75-471e10ba897a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:35:45,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d46907-95d9-4bf6-ac75-471e10ba897a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 20:35:45,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:45,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-18 20:35:45,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:35:46,187 WARN L859 $PredicateComparison]: unable to prove that (exists ((|##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| Int)) (= |c_#valid| (store |c_old(#valid)| |##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| 1))) is different from true [2022-11-18 20:35:46,676 INFO L321 Elim1Store]: treesize reduction 101, result has 24.1 percent of original size [2022-11-18 20:35:46,677 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 35 treesize of output 50 [2022-11-18 20:35:46,693 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 13 not checked. [2022-11-18 20:35:46,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:35:47,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491449821] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:35:47,003 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:35:47,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 12] total 37 [2022-11-18 20:35:47,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426711910] [2022-11-18 20:35:47,004 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:35:47,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-18 20:35:47,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:47,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-18 20:35:47,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1244, Unknown=1, NotChecked=72, Total=1482 [2022-11-18 20:35:47,006 INFO L87 Difference]: Start difference. First operand 313 states and 348 transitions. Second operand has 38 states, 33 states have (on average 3.0) internal successors, (99), 35 states have internal predecessors, (99), 8 states have call successors, (11), 3 states have call predecessors, (11), 7 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-18 20:35:53,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:35:53,249 INFO L93 Difference]: Finished difference Result 347 states and 386 transitions. [2022-11-18 20:35:53,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 20:35:53,249 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 33 states have (on average 3.0) internal successors, (99), 35 states have internal predecessors, (99), 8 states have call successors, (11), 3 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 [2022-11-18 20:35:53,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:35:53,252 INFO L225 Difference]: With dead ends: 347 [2022-11-18 20:35:53,252 INFO L226 Difference]: Without dead ends: 347 [2022-11-18 20:35:53,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 70 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 556 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=334, Invalid=2639, Unknown=1, NotChecked=106, Total=3080 [2022-11-18 20:35:53,255 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 174 mSDsluCounter, 1657 mSDsCounter, 0 mSdLazyCounter, 2514 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 1844 SdHoareTripleChecker+Invalid, 3541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 2514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 992 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:35:53,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 1844 Invalid, 3541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 2514 Invalid, 0 Unknown, 992 Unchecked, 3.5s Time] [2022-11-18 20:35:53,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2022-11-18 20:35:53,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 324. [2022-11-18 20:35:53,273 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) [2022-11-18 20:35:53,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 363 transitions. [2022-11-18 20:35:53,275 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 363 transitions. Word has length 65 [2022-11-18 20:35:53,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:35:53,275 INFO L495 AbstractCegarLoop]: Abstraction has 324 states and 363 transitions. [2022-11-18 20:35:53,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 33 states have (on average 3.0) internal successors, (99), 35 states have internal predecessors, (99), 8 states have call successors, (11), 3 states have call predecessors, (11), 7 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-18 20:35:53,276 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 363 transitions. [2022-11-18 20:35:53,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-18 20:35:53,276 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:35:53,276 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] [2022-11-18 20:35:53,290 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d46907-95d9-4bf6-ac75-471e10ba897a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 20:35:53,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d46907-95d9-4bf6-ac75-471e10ba897a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:35:53,485 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)] === [2022-11-18 20:35:53,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:53,486 INFO L85 PathProgramCache]: Analyzing trace with hash 2033150354, now seen corresponding path program 1 times [2022-11-18 20:35:53,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:53,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959207422] [2022-11-18 20:35:53,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:53,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:53,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:54,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-18 20:35:54,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:54,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-18 20:35:54,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:19,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:36:19,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:21,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:36:21,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:23,546 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:36:23,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:36:23,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959207422] [2022-11-18 20:36:23,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959207422] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:36:23,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571374127] [2022-11-18 20:36:23,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:36:23,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:36:23,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d46907-95d9-4bf6-ac75-471e10ba897a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:36:23,548 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d46907-95d9-4bf6-ac75-471e10ba897a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:36:23,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d46907-95d9-4bf6-ac75-471e10ba897a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 20:36:23,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:23,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 98 conjunts are in the unsatisfiable core [2022-11-18 20:36:23,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:36:24,163 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-18 20:36:24,735 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 20:36:25,035 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-18 20:36:25,035 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 15 [2022-11-18 20:36:25,040 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2022-11-18 20:36:32,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 32 [2022-11-18 20:36:32,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:36:32,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:36:32,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:36:32,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:36:32,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:36:32,691 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 20:36:32,692 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 30 [2022-11-18 20:36:32,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:36:32,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:36:32,741 INFO L321 Elim1Store]: treesize reduction 25, result has 39.0 percent of original size [2022-11-18 20:36:32,742 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 38 treesize of output 45 [2022-11-18 20:36:32,819 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 8 refuted. 5 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:36:32,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:36:36,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571374127] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:36:36,254 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:36:36,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 24] total 46 [2022-11-18 20:36:36,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972331397] [2022-11-18 20:36:36,255 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:36:36,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-11-18 20:36:36,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:36:36,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-11-18 20:36:36,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=2150, Unknown=11, NotChecked=0, Total=2352 [2022-11-18 20:36:36,257 INFO L87 Difference]: Start difference. First operand 324 states and 363 transitions. Second operand has 47 states, 42 states have (on average 2.4285714285714284) internal successors, (102), 40 states have internal predecessors, (102), 9 states have call successors, (11), 4 states have call predecessors, (11), 6 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-18 20:36:47,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:36:47,536 INFO L93 Difference]: Finished difference Result 356 states and 397 transitions. [2022-11-18 20:36:47,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-18 20:36:47,537 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 42 states have (on average 2.4285714285714284) internal successors, (102), 40 states have internal predecessors, (102), 9 states have call successors, (11), 4 states have call predecessors, (11), 6 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) Word has length 65 [2022-11-18 20:36:47,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:36:47,539 INFO L225 Difference]: With dead ends: 356 [2022-11-18 20:36:47,539 INFO L226 Difference]: Without dead ends: 356 [2022-11-18 20:36:47,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1183 ImplicationChecksByTransitivity, 19.5s TimeCoverageRelationStatistics Valid=345, Invalid=3793, Unknown=22, NotChecked=0, Total=4160 [2022-11-18 20:36:47,541 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 257 mSDsluCounter, 2671 mSDsCounter, 0 mSdLazyCounter, 2439 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 2856 SdHoareTripleChecker+Invalid, 3954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 2439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1462 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:36:47,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 2856 Invalid, 3954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 2439 Invalid, 0 Unknown, 1462 Unchecked, 3.7s Time] [2022-11-18 20:36:47,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-18 20:36:47,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 324. [2022-11-18 20:36:47,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 204 states have (on average 1.5343137254901962) internal successors, (313), 298 states have internal predecessors, (313), 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) [2022-11-18 20:36:47,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 361 transitions. [2022-11-18 20:36:47,551 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 361 transitions. Word has length 65 [2022-11-18 20:36:47,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:36:47,551 INFO L495 AbstractCegarLoop]: Abstraction has 324 states and 361 transitions. [2022-11-18 20:36:47,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 42 states have (on average 2.4285714285714284) internal successors, (102), 40 states have internal predecessors, (102), 9 states have call successors, (11), 4 states have call predecessors, (11), 6 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-18 20:36:47,552 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 361 transitions. [2022-11-18 20:36:47,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-18 20:36:47,552 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:36:47,553 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, 1, 1] [2022-11-18 20:36:47,563 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d46907-95d9-4bf6-ac75-471e10ba897a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-18 20:36:47,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73d46907-95d9-4bf6-ac75-471e10ba897a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:36:47,760 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting dll_insert_masterErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [dll_insert_masterErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, dll_insert_masterErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 95 more)] === [2022-11-18 20:36:47,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:36:47,760 INFO L85 PathProgramCache]: Analyzing trace with hash -352630062, now seen corresponding path program 1 times [2022-11-18 20:36:47,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:36:47,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767496560] [2022-11-18 20:36:47,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:36:47,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:36:47,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:48,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-18 20:36:48,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:48,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-18 20:36:48,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat