./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/list-properties/list-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58bba9cc-446b-410a-a65c-7579fe22b6f8/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58bba9cc-446b-410a-a65c-7579fe22b6f8/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58bba9cc-446b-410a-a65c-7579fe22b6f8/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58bba9cc-446b-410a-a65c-7579fe22b6f8/bin/uautomizer-DrprNOufMa/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/list-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58bba9cc-446b-410a-a65c-7579fe22b6f8/bin/uautomizer-DrprNOufMa/config/svcomp-MemCleanup-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58bba9cc-446b-410a-a65c-7579fe22b6f8/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a135e953d64ed0fec81eb2a1e42f4031e3e387fc71d5a5cd2177772a202dc706 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-07 00:47:37,851 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-07 00:47:37,852 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-07 00:47:37,883 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-07 00:47:37,884 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-07 00:47:37,885 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-07 00:47:37,887 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-07 00:47:37,889 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-07 00:47:37,891 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-07 00:47:37,893 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-07 00:47:37,894 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-07 00:47:37,895 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-07 00:47:37,896 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-07 00:47:37,897 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-07 00:47:37,898 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-07 00:47:37,900 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-07 00:47:37,901 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-07 00:47:37,902 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-07 00:47:37,904 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-07 00:47:37,906 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-07 00:47:37,908 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-07 00:47:37,910 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-07 00:47:37,911 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-07 00:47:37,912 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-07 00:47:37,916 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-07 00:47:37,916 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-07 00:47:37,917 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-07 00:47:37,918 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-07 00:47:37,918 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-07 00:47:37,919 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-07 00:47:37,920 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-07 00:47:37,930 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-07 00:47:37,930 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-07 00:47:37,931 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-07 00:47:37,932 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-07 00:47:37,932 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-07 00:47:37,932 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-07 00:47:37,932 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-07 00:47:37,933 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-07 00:47:37,933 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-07 00:47:37,933 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-07 00:47:37,934 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58bba9cc-446b-410a-a65c-7579fe22b6f8/bin/uautomizer-DrprNOufMa/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2021-12-07 00:47:37,956 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-07 00:47:37,956 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-07 00:47:37,956 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-07 00:47:37,956 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-07 00:47:37,957 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-07 00:47:37,957 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-07 00:47:37,958 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-07 00:47:37,958 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-07 00:47:37,958 INFO L138 SettingsManager]: * Use SBE=true [2021-12-07 00:47:37,958 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-07 00:47:37,958 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-07 00:47:37,959 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-07 00:47:37,959 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-07 00:47:37,959 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-07 00:47:37,959 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-07 00:47:37,959 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-07 00:47:37,959 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-07 00:47:37,959 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-07 00:47:37,959 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-07 00:47:37,960 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-07 00:47:37,960 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-07 00:47:37,960 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-07 00:47:37,960 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-07 00:47:37,960 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-07 00:47:37,960 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 00:47:37,960 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-07 00:47:37,960 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-07 00:47:37,961 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-07 00:47:37,961 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-07 00:47:37,961 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-07 00:47:37,961 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_58bba9cc-446b-410a-a65c-7579fe22b6f8/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58bba9cc-446b-410a-a65c-7579fe22b6f8/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a135e953d64ed0fec81eb2a1e42f4031e3e387fc71d5a5cd2177772a202dc706 [2021-12-07 00:47:38,148 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-07 00:47:38,163 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-07 00:47:38,165 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-07 00:47:38,166 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-07 00:47:38,166 INFO L275 PluginConnector]: CDTParser initialized [2021-12-07 00:47:38,167 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58bba9cc-446b-410a-a65c-7579fe22b6f8/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/list-properties/list-2.i [2021-12-07 00:47:38,209 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58bba9cc-446b-410a-a65c-7579fe22b6f8/bin/uautomizer-DrprNOufMa/data/91714a3f9/5b94870ac0094531bced9c3292d17ab9/FLAG96495842f [2021-12-07 00:47:38,618 INFO L306 CDTParser]: Found 1 translation units. [2021-12-07 00:47:38,618 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58bba9cc-446b-410a-a65c-7579fe22b6f8/sv-benchmarks/c/list-properties/list-2.i [2021-12-07 00:47:38,627 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58bba9cc-446b-410a-a65c-7579fe22b6f8/bin/uautomizer-DrprNOufMa/data/91714a3f9/5b94870ac0094531bced9c3292d17ab9/FLAG96495842f [2021-12-07 00:47:38,638 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58bba9cc-446b-410a-a65c-7579fe22b6f8/bin/uautomizer-DrprNOufMa/data/91714a3f9/5b94870ac0094531bced9c3292d17ab9 [2021-12-07 00:47:38,640 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-07 00:47:38,641 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-07 00:47:38,642 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-07 00:47:38,642 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-07 00:47:38,645 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-07 00:47:38,645 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:47:38" (1/1) ... [2021-12-07 00:47:38,646 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33887d02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:47:38, skipping insertion in model container [2021-12-07 00:47:38,646 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:47:38" (1/1) ... [2021-12-07 00:47:38,651 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-07 00:47:38,673 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 00:47:38,848 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58bba9cc-446b-410a-a65c-7579fe22b6f8/sv-benchmarks/c/list-properties/list-2.i[23408,23421] [2021-12-07 00:47:38,850 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:47:38,856 INFO L203 MainTranslator]: Completed pre-run [2021-12-07 00:47:38,881 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58bba9cc-446b-410a-a65c-7579fe22b6f8/sv-benchmarks/c/list-properties/list-2.i[23408,23421] [2021-12-07 00:47:38,882 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:47:38,902 INFO L208 MainTranslator]: Completed translation [2021-12-07 00:47:38,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:47:38 WrapperNode [2021-12-07 00:47:38,902 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-07 00:47:38,903 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-07 00:47:38,903 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-07 00:47:38,903 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-07 00:47:38,909 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:47:38" (1/1) ... [2021-12-07 00:47:38,918 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:47:38" (1/1) ... [2021-12-07 00:47:38,933 INFO L137 Inliner]: procedures = 124, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 81 [2021-12-07 00:47:38,933 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-07 00:47:38,934 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-07 00:47:38,934 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-07 00:47:38,934 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-07 00:47:38,940 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:47:38" (1/1) ... [2021-12-07 00:47:38,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:47:38" (1/1) ... [2021-12-07 00:47:38,942 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:47:38" (1/1) ... [2021-12-07 00:47:38,943 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:47:38" (1/1) ... [2021-12-07 00:47:38,948 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:47:38" (1/1) ... [2021-12-07 00:47:38,951 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:47:38" (1/1) ... [2021-12-07 00:47:38,952 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:47:38" (1/1) ... [2021-12-07 00:47:38,954 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-07 00:47:38,955 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-07 00:47:38,955 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-07 00:47:38,955 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-07 00:47:38,956 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:47:38" (1/1) ... [2021-12-07 00:47:38,962 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 00:47:38,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58bba9cc-446b-410a-a65c-7579fe22b6f8/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:47:38,979 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58bba9cc-446b-410a-a65c-7579fe22b6f8/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-07 00:47:38,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58bba9cc-446b-410a-a65c-7579fe22b6f8/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-07 00:47:39,009 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-12-07 00:47:39,009 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-12-07 00:47:39,009 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-07 00:47:39,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-07 00:47:39,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-07 00:47:39,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-07 00:47:39,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-07 00:47:39,010 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-07 00:47:39,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-07 00:47:39,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-07 00:47:39,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-07 00:47:39,086 INFO L236 CfgBuilder]: Building ICFG [2021-12-07 00:47:39,087 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-07 00:47:39,111 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-12-07 00:47:39,269 INFO L277 CfgBuilder]: Performing block encoding [2021-12-07 00:47:39,278 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-07 00:47:39,278 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-12-07 00:47:39,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:47:39 BoogieIcfgContainer [2021-12-07 00:47:39,279 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-07 00:47:39,281 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-07 00:47:39,281 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-07 00:47:39,284 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-07 00:47:39,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 12:47:38" (1/3) ... [2021-12-07 00:47:39,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ae9255e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:47:39, skipping insertion in model container [2021-12-07 00:47:39,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:47:38" (2/3) ... [2021-12-07 00:47:39,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ae9255e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:47:39, skipping insertion in model container [2021-12-07 00:47:39,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:47:39" (3/3) ... [2021-12-07 00:47:39,287 INFO L111 eAbstractionObserver]: Analyzing ICFG list-2.i [2021-12-07 00:47:39,293 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-07 00:47:39,293 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2021-12-07 00:47:39,327 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-07 00:47:39,332 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-07 00:47:39,332 INFO L340 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2021-12-07 00:47:39,344 INFO L276 IsEmpty]: Start isEmpty. Operand has 68 states, 38 states have (on average 2.0) internal successors, (76), 66 states have internal predecessors, (76), 3 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) [2021-12-07 00:47:39,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-07 00:47:39,350 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:47:39,350 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:47:39,351 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 22 more)] === [2021-12-07 00:47:39,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:47:39,356 INFO L85 PathProgramCache]: Analyzing trace with hash 2098238161, now seen corresponding path program 1 times [2021-12-07 00:47:39,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:47:39,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138020544] [2021-12-07 00:47:39,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:47:39,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:47:39,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:47:39,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:47:39,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:47:39,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138020544] [2021-12-07 00:47:39,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138020544] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:47:39,499 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:47:39,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:47:39,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122613042] [2021-12-07 00:47:39,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:47:39,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:47:39,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:47:39,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:47:39,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:47:39,530 INFO L87 Difference]: Start difference. First operand has 68 states, 38 states have (on average 2.0) internal successors, (76), 66 states have internal predecessors, (76), 3 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) Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:47:39,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:47:39,637 INFO L93 Difference]: Finished difference Result 75 states and 83 transitions. [2021-12-07 00:47:39,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 00:47:39,639 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-12-07 00:47:39,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:47:39,644 INFO L225 Difference]: With dead ends: 75 [2021-12-07 00:47:39,645 INFO L226 Difference]: Without dead ends: 68 [2021-12-07 00:47:39,646 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:47:39,649 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 115 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:47:39,649 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 40 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:47:39,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-12-07 00:47:39,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 63. [2021-12-07 00:47:39,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 44 states have (on average 1.6590909090909092) internal successors, (73), 62 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:47:39,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 73 transitions. [2021-12-07 00:47:39,677 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 73 transitions. Word has length 7 [2021-12-07 00:47:39,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:47:39,677 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 73 transitions. [2021-12-07 00:47:39,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:47:39,677 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 73 transitions. [2021-12-07 00:47:39,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-07 00:47:39,677 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:47:39,678 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:47:39,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-07 00:47:39,678 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 22 more)] === [2021-12-07 00:47:39,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:47:39,679 INFO L85 PathProgramCache]: Analyzing trace with hash 2098238162, now seen corresponding path program 1 times [2021-12-07 00:47:39,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:47:39,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700978456] [2021-12-07 00:47:39,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:47:39,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:47:39,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:47:39,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:47:39,747 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:47:39,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700978456] [2021-12-07 00:47:39,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700978456] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:47:39,748 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:47:39,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:47:39,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740039594] [2021-12-07 00:47:39,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:47:39,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:47:39,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:47:39,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:47:39,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:47:39,750 INFO L87 Difference]: Start difference. First operand 63 states and 73 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:47:39,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:47:39,842 INFO L93 Difference]: Finished difference Result 88 states and 95 transitions. [2021-12-07 00:47:39,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 00:47:39,843 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-12-07 00:47:39,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:47:39,844 INFO L225 Difference]: With dead ends: 88 [2021-12-07 00:47:39,844 INFO L226 Difference]: Without dead ends: 88 [2021-12-07 00:47:39,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:47:39,845 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 112 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:47:39,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 45 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:47:39,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-12-07 00:47:39,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 77. [2021-12-07 00:47:39,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 58 states have (on average 1.4655172413793103) internal successors, (85), 76 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:47:39,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 85 transitions. [2021-12-07 00:47:39,852 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 85 transitions. Word has length 7 [2021-12-07 00:47:39,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:47:39,852 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 85 transitions. [2021-12-07 00:47:39,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:47:39,853 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 85 transitions. [2021-12-07 00:47:39,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-07 00:47:39,853 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:47:39,853 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:47:39,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-07 00:47:39,854 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 22 more)] === [2021-12-07 00:47:39,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:47:39,854 INFO L85 PathProgramCache]: Analyzing trace with hash -502587362, now seen corresponding path program 1 times [2021-12-07 00:47:39,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:47:39,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910276146] [2021-12-07 00:47:39,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:47:39,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:47:39,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:47:39,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:47:39,909 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:47:39,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910276146] [2021-12-07 00:47:39,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910276146] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:47:39,909 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:47:39,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-07 00:47:39,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008045030] [2021-12-07 00:47:39,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:47:39,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 00:47:39,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:47:39,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 00:47:39,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-07 00:47:39,911 INFO L87 Difference]: Start difference. First operand 77 states and 85 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:47:40,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:47:40,010 INFO L93 Difference]: Finished difference Result 116 states and 123 transitions. [2021-12-07 00:47:40,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-07 00:47:40,011 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-12-07 00:47:40,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:47:40,012 INFO L225 Difference]: With dead ends: 116 [2021-12-07 00:47:40,012 INFO L226 Difference]: Without dead ends: 116 [2021-12-07 00:47:40,013 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-12-07 00:47:40,014 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 76 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:47:40,015 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 171 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:47:40,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-12-07 00:47:40,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 80. [2021-12-07 00:47:40,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 61 states have (on average 1.4426229508196722) internal successors, (88), 79 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:47:40,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 88 transitions. [2021-12-07 00:47:40,024 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 88 transitions. Word has length 15 [2021-12-07 00:47:40,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:47:40,024 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 88 transitions. [2021-12-07 00:47:40,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:47:40,024 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 88 transitions. [2021-12-07 00:47:40,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-07 00:47:40,025 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:47:40,025 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:47:40,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-07 00:47:40,025 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 22 more)] === [2021-12-07 00:47:40,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:47:40,026 INFO L85 PathProgramCache]: Analyzing trace with hash 761251652, now seen corresponding path program 1 times [2021-12-07 00:47:40,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:47:40,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351113800] [2021-12-07 00:47:40,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:47:40,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:47:40,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:47:40,091 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:47:40,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:47:40,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351113800] [2021-12-07 00:47:40,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351113800] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:47:40,091 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:47:40,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 00:47:40,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229380601] [2021-12-07 00:47:40,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:47:40,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 00:47:40,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:47:40,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 00:47:40,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-07 00:47:40,093 INFO L87 Difference]: Start difference. First operand 80 states and 88 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:47:40,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:47:40,199 INFO L93 Difference]: Finished difference Result 105 states and 114 transitions. [2021-12-07 00:47:40,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-07 00:47:40,200 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-12-07 00:47:40,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:47:40,201 INFO L225 Difference]: With dead ends: 105 [2021-12-07 00:47:40,201 INFO L226 Difference]: Without dead ends: 105 [2021-12-07 00:47:40,201 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-07 00:47:40,203 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 87 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:47:40,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 151 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:47:40,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-12-07 00:47:40,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 83. [2021-12-07 00:47:40,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 65 states have (on average 1.4461538461538461) internal successors, (94), 82 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:47:40,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 94 transitions. [2021-12-07 00:47:40,211 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 94 transitions. Word has length 15 [2021-12-07 00:47:40,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:47:40,211 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 94 transitions. [2021-12-07 00:47:40,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:47:40,212 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 94 transitions. [2021-12-07 00:47:40,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-07 00:47:40,212 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:47:40,212 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:47:40,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-07 00:47:40,213 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 22 more)] === [2021-12-07 00:47:40,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:47:40,214 INFO L85 PathProgramCache]: Analyzing trace with hash 761251653, now seen corresponding path program 1 times [2021-12-07 00:47:40,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:47:40,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34560337] [2021-12-07 00:47:40,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:47:40,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:47:40,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:47:40,292 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:47:40,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:47:40,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34560337] [2021-12-07 00:47:40,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34560337] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:47:40,292 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:47:40,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 00:47:40,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894408822] [2021-12-07 00:47:40,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:47:40,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 00:47:40,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:47:40,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 00:47:40,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-07 00:47:40,294 INFO L87 Difference]: Start difference. First operand 83 states and 94 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:47:40,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:47:40,451 INFO L93 Difference]: Finished difference Result 106 states and 116 transitions. [2021-12-07 00:47:40,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-07 00:47:40,452 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-12-07 00:47:40,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:47:40,452 INFO L225 Difference]: With dead ends: 106 [2021-12-07 00:47:40,452 INFO L226 Difference]: Without dead ends: 106 [2021-12-07 00:47:40,453 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-07 00:47:40,454 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 61 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:47:40,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 186 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:47:40,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-12-07 00:47:40,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 74. [2021-12-07 00:47:40,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 59 states have (on average 1.4067796610169492) internal successors, (83), 73 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:47:40,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 83 transitions. [2021-12-07 00:47:40,458 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 83 transitions. Word has length 15 [2021-12-07 00:47:40,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:47:40,459 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 83 transitions. [2021-12-07 00:47:40,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:47:40,459 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 83 transitions. [2021-12-07 00:47:40,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-07 00:47:40,460 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:47:40,460 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:47:40,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-07 00:47:40,460 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 22 more)] === [2021-12-07 00:47:40,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:47:40,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1997748640, now seen corresponding path program 1 times [2021-12-07 00:47:40,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:47:40,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238674684] [2021-12-07 00:47:40,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:47:40,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:47:40,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:47:40,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:47:40,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:47:40,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238674684] [2021-12-07 00:47:40,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238674684] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:47:40,501 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:47:40,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-07 00:47:40,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860380325] [2021-12-07 00:47:40,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:47:40,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 00:47:40,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:47:40,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 00:47:40,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-07 00:47:40,502 INFO L87 Difference]: Start difference. First operand 74 states and 83 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:47:40,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:47:40,567 INFO L93 Difference]: Finished difference Result 118 states and 126 transitions. [2021-12-07 00:47:40,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-07 00:47:40,567 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-12-07 00:47:40,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:47:40,568 INFO L225 Difference]: With dead ends: 118 [2021-12-07 00:47:40,568 INFO L226 Difference]: Without dead ends: 118 [2021-12-07 00:47:40,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-12-07 00:47:40,569 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 66 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:47:40,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 162 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:47:40,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-12-07 00:47:40,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 78. [2021-12-07 00:47:40,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 63 states have (on average 1.3968253968253967) internal successors, (88), 77 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:47:40,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 88 transitions. [2021-12-07 00:47:40,577 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 88 transitions. Word has length 17 [2021-12-07 00:47:40,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:47:40,577 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 88 transitions. [2021-12-07 00:47:40,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:47:40,578 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 88 transitions. [2021-12-07 00:47:40,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-07 00:47:40,578 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:47:40,578 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:47:40,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-07 00:47:40,579 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 22 more)] === [2021-12-07 00:47:40,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:47:40,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1997696085, now seen corresponding path program 1 times [2021-12-07 00:47:40,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:47:40,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701301931] [2021-12-07 00:47:40,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:47:40,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:47:40,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:47:40,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:47:40,618 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:47:40,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701301931] [2021-12-07 00:47:40,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701301931] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:47:40,618 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:47:40,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-07 00:47:40,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649328096] [2021-12-07 00:47:40,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:47:40,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 00:47:40,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:47:40,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 00:47:40,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-07 00:47:40,619 INFO L87 Difference]: Start difference. First operand 78 states and 88 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:47:40,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:47:40,699 INFO L93 Difference]: Finished difference Result 101 states and 108 transitions. [2021-12-07 00:47:40,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 00:47:40,699 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-12-07 00:47:40,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:47:40,700 INFO L225 Difference]: With dead ends: 101 [2021-12-07 00:47:40,700 INFO L226 Difference]: Without dead ends: 101 [2021-12-07 00:47:40,700 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-12-07 00:47:40,701 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 46 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:47:40,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 152 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:47:40,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-12-07 00:47:40,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 78. [2021-12-07 00:47:40,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 63 states have (on average 1.380952380952381) internal successors, (87), 77 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:47:40,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 87 transitions. [2021-12-07 00:47:40,708 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 87 transitions. Word has length 17 [2021-12-07 00:47:40,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:47:40,708 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 87 transitions. [2021-12-07 00:47:40,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:47:40,708 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 87 transitions. [2021-12-07 00:47:40,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-07 00:47:40,709 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:47:40,709 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:47:40,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-07 00:47:40,710 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 22 more)] === [2021-12-07 00:47:40,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:47:40,710 INFO L85 PathProgramCache]: Analyzing trace with hash 2001456982, now seen corresponding path program 1 times [2021-12-07 00:47:40,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:47:40,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600386452] [2021-12-07 00:47:40,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:47:40,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:47:40,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:47:40,755 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:47:40,755 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:47:40,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600386452] [2021-12-07 00:47:40,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600386452] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:47:40,755 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:47:40,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 00:47:40,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900001721] [2021-12-07 00:47:40,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:47:40,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 00:47:40,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:47:40,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 00:47:40,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-07 00:47:40,757 INFO L87 Difference]: Start difference. First operand 78 states and 87 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:47:40,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:47:40,832 INFO L93 Difference]: Finished difference Result 84 states and 91 transitions. [2021-12-07 00:47:40,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-07 00:47:40,832 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-12-07 00:47:40,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:47:40,833 INFO L225 Difference]: With dead ends: 84 [2021-12-07 00:47:40,833 INFO L226 Difference]: Without dead ends: 84 [2021-12-07 00:47:40,833 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-07 00:47:40,834 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 80 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:47:40,834 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 122 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:47:40,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-12-07 00:47:40,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 76. [2021-12-07 00:47:40,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 63 states have (on average 1.3492063492063493) internal successors, (85), 75 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:47:40,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 85 transitions. [2021-12-07 00:47:40,838 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 85 transitions. Word has length 17 [2021-12-07 00:47:40,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:47:40,838 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 85 transitions. [2021-12-07 00:47:40,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:47:40,838 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 85 transitions. [2021-12-07 00:47:40,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-07 00:47:40,839 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:47:40,839 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:47:40,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-07 00:47:40,839 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 22 more)] === [2021-12-07 00:47:40,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:47:40,839 INFO L85 PathProgramCache]: Analyzing trace with hash 2001456983, now seen corresponding path program 1 times [2021-12-07 00:47:40,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:47:40,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791675509] [2021-12-07 00:47:40,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:47:40,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:47:40,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:47:40,900 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:47:40,900 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:47:40,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791675509] [2021-12-07 00:47:40,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791675509] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:47:40,900 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:47:40,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 00:47:40,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109032077] [2021-12-07 00:47:40,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:47:40,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 00:47:40,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:47:40,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 00:47:40,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-07 00:47:40,901 INFO L87 Difference]: Start difference. First operand 76 states and 85 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:47:41,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:47:41,007 INFO L93 Difference]: Finished difference Result 81 states and 89 transitions. [2021-12-07 00:47:41,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-07 00:47:41,007 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-12-07 00:47:41,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:47:41,008 INFO L225 Difference]: With dead ends: 81 [2021-12-07 00:47:41,008 INFO L226 Difference]: Without dead ends: 81 [2021-12-07 00:47:41,008 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-07 00:47:41,009 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 53 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:47:41,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 147 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:47:41,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-12-07 00:47:41,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 64. [2021-12-07 00:47:41,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 55 states have (on average 1.309090909090909) internal successors, (72), 63 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:47:41,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 72 transitions. [2021-12-07 00:47:41,012 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 72 transitions. Word has length 17 [2021-12-07 00:47:41,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:47:41,012 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 72 transitions. [2021-12-07 00:47:41,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:47:41,012 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 72 transitions. [2021-12-07 00:47:41,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-07 00:47:41,013 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:47:41,013 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:47:41,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-07 00:47:41,013 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 22 more)] === [2021-12-07 00:47:41,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:47:41,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1800660604, now seen corresponding path program 1 times [2021-12-07 00:47:41,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:47:41,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75931662] [2021-12-07 00:47:41,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:47:41,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:47:41,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:47:41,022 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 00:47:41,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:47:41,041 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 00:47:41,041 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-07 00:47:41,042 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK (25 of 26 remaining) [2021-12-07 00:47:41,043 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION (24 of 26 remaining) [2021-12-07 00:47:41,044 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION (23 of 26 remaining) [2021-12-07 00:47:41,044 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION (22 of 26 remaining) [2021-12-07 00:47:41,044 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION (21 of 26 remaining) [2021-12-07 00:47:41,044 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION (20 of 26 remaining) [2021-12-07 00:47:41,044 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION (19 of 26 remaining) [2021-12-07 00:47:41,044 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION (18 of 26 remaining) [2021-12-07 00:47:41,044 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION (17 of 26 remaining) [2021-12-07 00:47:41,044 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION (16 of 26 remaining) [2021-12-07 00:47:41,044 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION (15 of 26 remaining) [2021-12-07 00:47:41,044 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATION (14 of 26 remaining) [2021-12-07 00:47:41,044 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATION (13 of 26 remaining) [2021-12-07 00:47:41,045 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATION (12 of 26 remaining) [2021-12-07 00:47:41,045 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATION (11 of 26 remaining) [2021-12-07 00:47:41,045 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATION (10 of 26 remaining) [2021-12-07 00:47:41,045 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATION (9 of 26 remaining) [2021-12-07 00:47:41,045 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATION (8 of 26 remaining) [2021-12-07 00:47:41,045 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATION (7 of 26 remaining) [2021-12-07 00:47:41,045 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATION (6 of 26 remaining) [2021-12-07 00:47:41,045 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATION (5 of 26 remaining) [2021-12-07 00:47:41,045 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATION (4 of 26 remaining) [2021-12-07 00:47:41,045 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATION (3 of 26 remaining) [2021-12-07 00:47:41,045 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATION (2 of 26 remaining) [2021-12-07 00:47:41,045 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATION (1 of 26 remaining) [2021-12-07 00:47:41,046 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK (0 of 26 remaining) [2021-12-07 00:47:41,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-07 00:47:41,048 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:47:41,051 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-07 00:47:41,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 12:47:41 BoogieIcfgContainer [2021-12-07 00:47:41,066 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-07 00:47:41,066 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-07 00:47:41,066 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-07 00:47:41,066 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-07 00:47:41,066 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:47:39" (3/4) ... [2021-12-07 00:47:41,068 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-07 00:47:41,091 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58bba9cc-446b-410a-a65c-7579fe22b6f8/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-07 00:47:41,092 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-07 00:47:41,092 INFO L158 Benchmark]: Toolchain (without parser) took 2451.03ms. Allocated memory was 83.9MB in the beginning and 115.3MB in the end (delta: 31.5MB). Free memory was 57.5MB in the beginning and 34.9MB in the end (delta: 22.6MB). Peak memory consumption was 54.7MB. Max. memory is 16.1GB. [2021-12-07 00:47:41,092 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 83.9MB. Free memory was 54.6MB in the beginning and 54.6MB in the end (delta: 65.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-07 00:47:41,092 INFO L158 Benchmark]: CACSL2BoogieTranslator took 260.24ms. Allocated memory is still 83.9MB. Free memory was 57.4MB in the beginning and 41.2MB in the end (delta: 16.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-12-07 00:47:41,093 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.41ms. Allocated memory is still 83.9MB. Free memory was 41.2MB in the beginning and 39.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-07 00:47:41,093 INFO L158 Benchmark]: Boogie Preprocessor took 20.57ms. Allocated memory is still 83.9MB. Free memory was 39.2MB in the beginning and 37.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-07 00:47:41,093 INFO L158 Benchmark]: RCFGBuilder took 324.39ms. Allocated memory was 83.9MB in the beginning and 115.3MB in the end (delta: 31.5MB). Free memory was 37.7MB in the beginning and 84.8MB in the end (delta: -47.1MB). Peak memory consumption was 15.5MB. Max. memory is 16.1GB. [2021-12-07 00:47:41,093 INFO L158 Benchmark]: TraceAbstraction took 1784.58ms. Allocated memory is still 115.3MB. Free memory was 84.3MB in the beginning and 36.8MB in the end (delta: 47.5MB). Peak memory consumption was 47.5MB. Max. memory is 16.1GB. [2021-12-07 00:47:41,096 INFO L158 Benchmark]: Witness Printer took 25.71ms. Allocated memory is still 115.3MB. Free memory was 36.8MB in the beginning and 34.9MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-07 00:47:41,098 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 83.9MB. Free memory was 54.6MB in the beginning and 54.6MB in the end (delta: 65.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 260.24ms. Allocated memory is still 83.9MB. Free memory was 57.4MB in the beginning and 41.2MB in the end (delta: 16.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.41ms. Allocated memory is still 83.9MB. Free memory was 41.2MB in the beginning and 39.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.57ms. Allocated memory is still 83.9MB. Free memory was 39.2MB in the beginning and 37.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 324.39ms. Allocated memory was 83.9MB in the beginning and 115.3MB in the end (delta: 31.5MB). Free memory was 37.7MB in the beginning and 84.8MB in the end (delta: -47.1MB). Peak memory consumption was 15.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1784.58ms. Allocated memory is still 115.3MB. Free memory was 84.3MB in the beginning and 36.8MB in the end (delta: 47.5MB). Peak memory consumption was 47.5MB. Max. memory is 16.1GB. * Witness Printer took 25.71ms. Allocated memory is still 115.3MB. Free memory was 36.8MB in the beginning and 34.9MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 531]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L532] List a = (List) malloc(sizeof(struct node)); [L533] COND FALSE !(a == 0) VAL [a={-1:0}] [L534] List t; [L535] List p = a; VAL [a={-1:0}, p={-1:0}] [L536] COND FALSE !(__VERIFIER_nondet_int()) [L543] COND FALSE !(__VERIFIER_nondet_int()) [L550] p->h = 3 VAL [a={-1:0}, p={-1:0}] [L551] p = a VAL [a={-1:0}, p={-1:0}] [L552] EXPR p->h VAL [a={-1:0}, p={-1:0}, p->h=3] [L552] COND FALSE !(p->h == 2) [L554] EXPR p->h VAL [a={-1:0}, p={-1:0}, p->h=3] [L554] COND FALSE !(p->h == 1) [L556] EXPR p->h VAL [a={-1:0}, p={-1:0}, p->h=3] [L556] COND FALSE !(p->h != 3) [L558] return 0; VAL [\result=0, a={-1:0}, p={-1:0}] - UnprovableResult [Line: 537]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 537]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 544]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 544]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 553]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 553]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 556]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 556]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 557]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 69 locations, 26 error locations. Started 1 CEGAR loops. OverallTime: 1.7s, OverallIterations: 10, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 696 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 696 mSDsluCounter, 1176 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 800 mSDsCounter, 107 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1141 IncrementalHoareTripleChecker+Invalid, 1248 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 107 mSolverCounterUnsat, 376 mSDtfsCounter, 1141 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=83occurred in iteration=4, InterpolantAutomatonStates: 58, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 194 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 145 NumberOfCodeBlocks, 145 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 118 ConstructedInterpolants, 0 QuantifiedInterpolants, 550 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 12/12 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-12-07 00:47:41,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58bba9cc-446b-410a-a65c-7579fe22b6f8/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-memcleanup)