./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/forester-heap/sll-optional-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba96263-db21-4cb8-98ff-a7a15aa84567/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba96263-db21-4cb8-98ff-a7a15aa84567/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba96263-db21-4cb8-98ff-a7a15aa84567/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba96263-db21-4cb8-98ff-a7a15aa84567/bin/utaipan-TEXQjIfE4P/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/sll-optional-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba96263-db21-4cb8-98ff-a7a15aa84567/bin/utaipan-TEXQjIfE4P/config/svcomp-MemCleanup-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba96263-db21-4cb8-98ff-a7a15aa84567/bin/utaipan-TEXQjIfE4P --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 88a09c8f9046119952ab983278979c8bac528a0f4e69aababe99c00b4eccdca0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:58:56,778 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:58:56,781 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:58:56,829 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:58:56,830 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:58:56,832 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:58:56,837 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:58:56,841 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:58:56,844 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:58:56,850 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:58:56,851 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:58:56,853 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:58:56,853 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:58:56,856 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:58:56,858 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:58:56,862 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:58:56,864 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:58:56,865 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:58:56,867 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:58:56,875 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:58:56,877 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:58:56,878 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:58:56,880 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:58:56,881 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:58:56,884 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:58:56,884 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:58:56,885 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:58:56,886 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:58:56,887 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:58:56,888 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:58:56,888 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:58:56,889 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:58:56,890 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:58:56,891 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:58:56,892 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:58:56,892 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:58:56,893 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:58:56,893 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:58:56,893 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:58:56,894 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:58:56,895 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:58:56,896 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba96263-db21-4cb8-98ff-a7a15aa84567/bin/utaipan-TEXQjIfE4P/config/svcomp-MemCleanup-32bit-Taipan_Default.epf [2021-11-21 01:58:56,949 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:58:56,954 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:58:56,954 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:58:56,955 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:58:56,955 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:58:56,956 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:58:56,956 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:58:56,957 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:58:56,957 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:58:56,957 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:58:56,958 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:58:56,958 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:58:56,959 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:58:56,959 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:58:56,959 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:58:56,959 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:58:56,960 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:58:56,960 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:58:56,960 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-21 01:58:56,961 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-21 01:58:56,961 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:58:56,961 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:58:56,961 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-21 01:58:56,963 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:58:56,963 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:58:56,963 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:58:56,964 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-21 01:58:56,964 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-21 01:58:56,964 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:58:56,965 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-21 01:58:56,965 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:58:56,965 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:58:56,965 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:58:56,966 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:58:56,966 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:58:56,966 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:58:56,966 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:58:56,967 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:58:56,967 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:58:56,967 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:58:56,967 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:58:56,967 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_2ba96263-db21-4cb8-98ff-a7a15aa84567/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba96263-db21-4cb8-98ff-a7a15aa84567/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 88a09c8f9046119952ab983278979c8bac528a0f4e69aababe99c00b4eccdca0 [2021-11-21 01:58:57,257 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:58:57,280 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:58:57,282 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:58:57,283 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:58:57,284 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:58:57,285 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba96263-db21-4cb8-98ff-a7a15aa84567/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/forester-heap/sll-optional-2.i [2021-11-21 01:58:57,365 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba96263-db21-4cb8-98ff-a7a15aa84567/bin/utaipan-TEXQjIfE4P/data/11f78e019/235091ca858a4bd69ff9e0e39b83ed71/FLAGe97f0c183 [2021-11-21 01:58:57,851 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:58:57,852 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba96263-db21-4cb8-98ff-a7a15aa84567/sv-benchmarks/c/forester-heap/sll-optional-2.i [2021-11-21 01:58:57,865 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba96263-db21-4cb8-98ff-a7a15aa84567/bin/utaipan-TEXQjIfE4P/data/11f78e019/235091ca858a4bd69ff9e0e39b83ed71/FLAGe97f0c183 [2021-11-21 01:58:58,183 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba96263-db21-4cb8-98ff-a7a15aa84567/bin/utaipan-TEXQjIfE4P/data/11f78e019/235091ca858a4bd69ff9e0e39b83ed71 [2021-11-21 01:58:58,185 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:58:58,186 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:58:58,193 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:58:58,193 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:58:58,197 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:58:58,197 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:58:58" (1/1) ... [2021-11-21 01:58:58,198 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49987ae3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:58:58, skipping insertion in model container [2021-11-21 01:58:58,199 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:58:58" (1/1) ... [2021-11-21 01:58:58,206 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:58:58,261 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:58:58,566 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_2ba96263-db21-4cb8-98ff-a7a15aa84567/sv-benchmarks/c/forester-heap/sll-optional-2.i[22641,22654] [2021-11-21 01:58:58,573 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:58:58,580 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:58:58,619 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_2ba96263-db21-4cb8-98ff-a7a15aa84567/sv-benchmarks/c/forester-heap/sll-optional-2.i[22641,22654] [2021-11-21 01:58:58,622 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:58:58,653 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:58:58,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:58:58 WrapperNode [2021-11-21 01:58:58,654 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:58:58,655 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:58:58,655 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:58:58,655 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:58:58,663 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:58:58" (1/1) ... [2021-11-21 01:58:58,677 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:58:58" (1/1) ... [2021-11-21 01:58:58,700 INFO L137 Inliner]: procedures = 119, calls = 38, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 117 [2021-11-21 01:58:58,701 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:58:58,702 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:58:58,702 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:58:58,702 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:58:58,710 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:58:58" (1/1) ... [2021-11-21 01:58:58,710 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:58:58" (1/1) ... [2021-11-21 01:58:58,714 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:58:58" (1/1) ... [2021-11-21 01:58:58,714 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:58:58" (1/1) ... [2021-11-21 01:58:58,733 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:58:58" (1/1) ... [2021-11-21 01:58:58,737 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:58:58" (1/1) ... [2021-11-21 01:58:58,738 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:58:58" (1/1) ... [2021-11-21 01:58:58,744 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:58:58,745 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:58:58,745 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:58:58,745 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:58:58,746 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:58:58" (1/1) ... [2021-11-21 01:58:58,762 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:58:58,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba96263-db21-4cb8-98ff-a7a15aa84567/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:58:58,786 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba96263-db21-4cb8-98ff-a7a15aa84567/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:58:58,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba96263-db21-4cb8-98ff-a7a15aa84567/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:58:58,826 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 01:58:58,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 01:58:58,826 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 01:58:58,826 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:58:58,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 01:58:58,827 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 01:58:58,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 01:58:58,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:58:58,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:58:58,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:58:58,975 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:58:58,977 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:58:59,412 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:58:59,506 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:58:59,506 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-21 01:58:59,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:58:59 BoogieIcfgContainer [2021-11-21 01:58:59,509 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:58:59,516 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:58:59,516 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:58:59,520 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:58:59,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:58:58" (1/3) ... [2021-11-21 01:58:59,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aa3f233 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:58:59, skipping insertion in model container [2021-11-21 01:58:59,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:58:58" (2/3) ... [2021-11-21 01:58:59,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aa3f233 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:58:59, skipping insertion in model container [2021-11-21 01:58:59,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:58:59" (3/3) ... [2021-11-21 01:58:59,523 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-optional-2.i [2021-11-21 01:58:59,534 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:58:59,534 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 60 error locations. [2021-11-21 01:58:59,579 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:58:59,587 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 [2021-11-21 01:58:59,592 INFO L340 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2021-11-21 01:58:59,615 INFO L276 IsEmpty]: Start isEmpty. Operand has 110 states, 49 states have (on average 2.489795918367347) internal successors, (122), 109 states have internal predecessors, (122), 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) [2021-11-21 01:58:59,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-11-21 01:58:59,621 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:58:59,622 INFO L514 BasicCegarLoop]: trace histogram [1, 1] [2021-11-21 01:58:59,622 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 56 more)] === [2021-11-21 01:58:59,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:58:59,628 INFO L85 PathProgramCache]: Analyzing trace with hash 7413, now seen corresponding path program 1 times [2021-11-21 01:58:59,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:58:59,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928867535] [2021-11-21 01:58:59,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:58:59,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:58:59,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:58:59,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:58:59,811 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:58:59,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928867535] [2021-11-21 01:58:59,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928867535] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:58:59,813 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:58:59,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-21 01:58:59,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899685502] [2021-11-21 01:58:59,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:58:59,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:58:59,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:58:59,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:58:59,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:58:59,858 INFO L87 Difference]: Start difference. First operand has 110 states, 49 states have (on average 2.489795918367347) internal successors, (122), 109 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2021-11-21 01:59:00,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:59:00,035 INFO L93 Difference]: Finished difference Result 110 states and 118 transitions. [2021-11-21 01:59:00,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:59:00,038 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2021-11-21 01:59:00,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:59:00,052 INFO L225 Difference]: With dead ends: 110 [2021-11-21 01:59:00,052 INFO L226 Difference]: Without dead ends: 108 [2021-11-21 01:59:00,054 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:59:00,058 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 95 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:59:00,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 50 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:59:00,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-11-21 01:59:00,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 103. [2021-11-21 01:59:00,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 52 states have (on average 2.173076923076923) internal successors, (113), 102 states have internal predecessors, (113), 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) [2021-11-21 01:59:00,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 113 transitions. [2021-11-21 01:59:00,107 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 113 transitions. Word has length 2 [2021-11-21 01:59:00,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:59:00,108 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 113 transitions. [2021-11-21 01:59:00,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2021-11-21 01:59:00,109 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 113 transitions. [2021-11-21 01:59:00,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-11-21 01:59:00,109 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:59:00,109 INFO L514 BasicCegarLoop]: trace histogram [1, 1] [2021-11-21 01:59:00,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 01:59:00,111 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 56 more)] === [2021-11-21 01:59:00,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:59:00,114 INFO L85 PathProgramCache]: Analyzing trace with hash 7414, now seen corresponding path program 1 times [2021-11-21 01:59:00,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:59:00,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766560903] [2021-11-21 01:59:00,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:59:00,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:59:00,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:59:00,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:59:00,168 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:59:00,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766560903] [2021-11-21 01:59:00,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766560903] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:59:00,168 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:59:00,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-21 01:59:00,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897264025] [2021-11-21 01:59:00,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:59:00,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:59:00,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:59:00,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:59:00,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:59:00,172 INFO L87 Difference]: Start difference. First operand 103 states and 113 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2021-11-21 01:59:00,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:59:00,289 INFO L93 Difference]: Finished difference Result 98 states and 108 transitions. [2021-11-21 01:59:00,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:59:00,290 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2021-11-21 01:59:00,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:59:00,293 INFO L225 Difference]: With dead ends: 98 [2021-11-21 01:59:00,293 INFO L226 Difference]: Without dead ends: 98 [2021-11-21 01:59:00,297 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:59:00,300 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 73 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:59:00,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 65 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:59:00,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-11-21 01:59:00,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 95. [2021-11-21 01:59:00,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 52 states have (on average 2.019230769230769) internal successors, (105), 94 states have internal predecessors, (105), 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) [2021-11-21 01:59:00,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 105 transitions. [2021-11-21 01:59:00,322 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 105 transitions. Word has length 2 [2021-11-21 01:59:00,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:59:00,323 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 105 transitions. [2021-11-21 01:59:00,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2021-11-21 01:59:00,323 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 105 transitions. [2021-11-21 01:59:00,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-21 01:59:00,324 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:59:00,324 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:59:00,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 01:59:00,324 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 56 more)] === [2021-11-21 01:59:00,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:59:00,325 INFO L85 PathProgramCache]: Analyzing trace with hash -845954935, now seen corresponding path program 1 times [2021-11-21 01:59:00,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:59:00,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591133445] [2021-11-21 01:59:00,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:59:00,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:59:00,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:59:00,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:59:00,446 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:59:00,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591133445] [2021-11-21 01:59:00,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591133445] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:59:00,448 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:59:00,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:59:00,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622998853] [2021-11-21 01:59:00,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:59:00,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:59:00,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:59:00,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:59:00,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:59:00,451 INFO L87 Difference]: Start difference. First operand 95 states and 105 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 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) [2021-11-21 01:59:00,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:59:00,658 INFO L93 Difference]: Finished difference Result 119 states and 132 transitions. [2021-11-21 01:59:00,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:59:00,659 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 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 [2021-11-21 01:59:00,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:59:00,663 INFO L225 Difference]: With dead ends: 119 [2021-11-21 01:59:00,663 INFO L226 Difference]: Without dead ends: 119 [2021-11-21 01:59:00,664 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:59:00,671 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 28 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:59:00,673 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 200 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 01:59:00,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-11-21 01:59:00,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 94. [2021-11-21 01:59:00,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 52 states have (on average 2.0) internal successors, (104), 93 states have internal predecessors, (104), 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) [2021-11-21 01:59:00,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 104 transitions. [2021-11-21 01:59:00,684 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 104 transitions. Word has length 7 [2021-11-21 01:59:00,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:59:00,684 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 104 transitions. [2021-11-21 01:59:00,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 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) [2021-11-21 01:59:00,684 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 104 transitions. [2021-11-21 01:59:00,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-21 01:59:00,685 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:59:00,685 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:59:00,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 01:59:00,685 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 56 more)] === [2021-11-21 01:59:00,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:59:00,686 INFO L85 PathProgramCache]: Analyzing trace with hash -845954934, now seen corresponding path program 1 times [2021-11-21 01:59:00,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:59:00,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415701452] [2021-11-21 01:59:00,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:59:00,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:59:00,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:59:00,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:59:00,847 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:59:00,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415701452] [2021-11-21 01:59:00,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415701452] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:59:00,849 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:59:00,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:59:00,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696584331] [2021-11-21 01:59:00,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:59:00,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:59:00,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:59:00,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:59:00,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:59:00,852 INFO L87 Difference]: Start difference. First operand 94 states and 104 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 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) [2021-11-21 01:59:01,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:59:01,026 INFO L93 Difference]: Finished difference Result 93 states and 103 transitions. [2021-11-21 01:59:01,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:59:01,027 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 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 [2021-11-21 01:59:01,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:59:01,028 INFO L225 Difference]: With dead ends: 93 [2021-11-21 01:59:01,028 INFO L226 Difference]: Without dead ends: 93 [2021-11-21 01:59:01,028 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:59:01,029 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 1 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:59:01,030 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 223 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 01:59:01,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-11-21 01:59:01,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2021-11-21 01:59:01,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 52 states have (on average 1.9807692307692308) internal successors, (103), 92 states have internal predecessors, (103), 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) [2021-11-21 01:59:01,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 103 transitions. [2021-11-21 01:59:01,035 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 103 transitions. Word has length 7 [2021-11-21 01:59:01,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:59:01,036 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 103 transitions. [2021-11-21 01:59:01,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 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) [2021-11-21 01:59:01,036 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 103 transitions. [2021-11-21 01:59:01,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-21 01:59:01,036 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:59:01,037 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:59:01,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 01:59:01,037 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 56 more)] === [2021-11-21 01:59:01,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:59:01,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1318111834, now seen corresponding path program 1 times [2021-11-21 01:59:01,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:59:01,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796871321] [2021-11-21 01:59:01,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:59:01,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:59:01,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:59:01,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:59:01,144 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:59:01,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796871321] [2021-11-21 01:59:01,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796871321] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:59:01,145 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:59:01,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-21 01:59:01,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169753412] [2021-11-21 01:59:01,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:59:01,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:59:01,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:59:01,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:59:01,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:59:01,149 INFO L87 Difference]: Start difference. First operand 93 states and 103 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2021-11-21 01:59:01,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:59:01,295 INFO L93 Difference]: Finished difference Result 94 states and 103 transitions. [2021-11-21 01:59:01,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:59:01,296 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 10 [2021-11-21 01:59:01,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:59:01,301 INFO L225 Difference]: With dead ends: 94 [2021-11-21 01:59:01,301 INFO L226 Difference]: Without dead ends: 94 [2021-11-21 01:59:01,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:59:01,302 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 110 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:59:01,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 44 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:59:01,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-11-21 01:59:01,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 87. [2021-11-21 01:59:01,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 57 states have (on average 1.7894736842105263) internal successors, (102), 86 states have internal predecessors, (102), 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) [2021-11-21 01:59:01,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 102 transitions. [2021-11-21 01:59:01,323 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 102 transitions. Word has length 10 [2021-11-21 01:59:01,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:59:01,324 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 102 transitions. [2021-11-21 01:59:01,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2021-11-21 01:59:01,324 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 102 transitions. [2021-11-21 01:59:01,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-21 01:59:01,325 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:59:01,325 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:59:01,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-21 01:59:01,326 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 56 more)] === [2021-11-21 01:59:01,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:59:01,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1318111835, now seen corresponding path program 1 times [2021-11-21 01:59:01,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:59:01,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296562910] [2021-11-21 01:59:01,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:59:01,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:59:01,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:59:01,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:59:01,422 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:59:01,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296562910] [2021-11-21 01:59:01,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296562910] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:59:01,422 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:59:01,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:59:01,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375601932] [2021-11-21 01:59:01,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:59:01,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 01:59:01,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:59:01,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 01:59:01,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:59:01,424 INFO L87 Difference]: Start difference. First operand 87 states and 102 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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) [2021-11-21 01:59:01,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:59:01,613 INFO L93 Difference]: Finished difference Result 121 states and 135 transitions. [2021-11-21 01:59:01,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:59:01,613 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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 10 [2021-11-21 01:59:01,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:59:01,614 INFO L225 Difference]: With dead ends: 121 [2021-11-21 01:59:01,614 INFO L226 Difference]: Without dead ends: 121 [2021-11-21 01:59:01,615 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-21 01:59:01,615 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 197 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:59:01,616 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [197 Valid, 63 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 01:59:01,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-11-21 01:59:01,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 103. [2021-11-21 01:59:01,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 73 states have (on average 1.6712328767123288) internal successors, (122), 102 states have internal predecessors, (122), 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) [2021-11-21 01:59:01,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 122 transitions. [2021-11-21 01:59:01,621 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 122 transitions. Word has length 10 [2021-11-21 01:59:01,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:59:01,622 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 122 transitions. [2021-11-21 01:59:01,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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) [2021-11-21 01:59:01,626 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 122 transitions. [2021-11-21 01:59:01,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-21 01:59:01,627 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:59:01,627 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:59:01,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-21 01:59:01,627 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 56 more)] === [2021-11-21 01:59:01,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:59:01,628 INFO L85 PathProgramCache]: Analyzing trace with hash -309722580, now seen corresponding path program 1 times [2021-11-21 01:59:01,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:59:01,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788865598] [2021-11-21 01:59:01,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:59:01,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:59:01,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:59:01,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:59:01,707 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:59:01,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788865598] [2021-11-21 01:59:01,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788865598] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:59:01,708 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:59:01,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:59:01,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11339513] [2021-11-21 01:59:01,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:59:01,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:59:01,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:59:01,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:59:01,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:59:01,710 INFO L87 Difference]: Start difference. First operand 103 states and 122 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 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) [2021-11-21 01:59:01,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:59:01,851 INFO L93 Difference]: Finished difference Result 103 states and 122 transitions. [2021-11-21 01:59:01,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:59:01,851 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 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 12 [2021-11-21 01:59:01,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:59:01,852 INFO L225 Difference]: With dead ends: 103 [2021-11-21 01:59:01,852 INFO L226 Difference]: Without dead ends: 103 [2021-11-21 01:59:01,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-21 01:59:01,853 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 37 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:59:01,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 141 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:59:01,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-11-21 01:59:01,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 102. [2021-11-21 01:59:01,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 73 states have (on average 1.6575342465753424) internal successors, (121), 101 states have internal predecessors, (121), 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) [2021-11-21 01:59:01,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 121 transitions. [2021-11-21 01:59:01,859 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 121 transitions. Word has length 12 [2021-11-21 01:59:01,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:59:01,859 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 121 transitions. [2021-11-21 01:59:01,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 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) [2021-11-21 01:59:01,860 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 121 transitions. [2021-11-21 01:59:01,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-21 01:59:01,860 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:59:01,860 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:59:01,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-21 01:59:01,861 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 56 more)] === [2021-11-21 01:59:01,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:59:01,861 INFO L85 PathProgramCache]: Analyzing trace with hash -309722579, now seen corresponding path program 1 times [2021-11-21 01:59:01,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:59:01,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695986413] [2021-11-21 01:59:01,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:59:01,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:59:01,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:59:01,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:59:01,945 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:59:01,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695986413] [2021-11-21 01:59:01,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695986413] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:59:01,945 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:59:01,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:59:01,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512115855] [2021-11-21 01:59:01,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:59:01,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:59:01,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:59:01,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:59:01,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:59:01,947 INFO L87 Difference]: Start difference. First operand 102 states and 121 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 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) [2021-11-21 01:59:02,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:59:02,086 INFO L93 Difference]: Finished difference Result 93 states and 112 transitions. [2021-11-21 01:59:02,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:59:02,087 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 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 12 [2021-11-21 01:59:02,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:59:02,088 INFO L225 Difference]: With dead ends: 93 [2021-11-21 01:59:02,088 INFO L226 Difference]: Without dead ends: 93 [2021-11-21 01:59:02,088 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-21 01:59:02,089 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 16 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:59:02,089 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 161 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:59:02,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-11-21 01:59:02,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 88. [2021-11-21 01:59:02,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 69 states have (on average 1.536231884057971) internal successors, (106), 87 states have internal predecessors, (106), 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) [2021-11-21 01:59:02,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 106 transitions. [2021-11-21 01:59:02,093 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 106 transitions. Word has length 12 [2021-11-21 01:59:02,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:59:02,094 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 106 transitions. [2021-11-21 01:59:02,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 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) [2021-11-21 01:59:02,094 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 106 transitions. [2021-11-21 01:59:02,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-21 01:59:02,094 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:59:02,095 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:59:02,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-21 01:59:02,095 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 56 more)] === [2021-11-21 01:59:02,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:59:02,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1016417189, now seen corresponding path program 1 times [2021-11-21 01:59:02,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:59:02,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295313002] [2021-11-21 01:59:02,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:59:02,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:59:02,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:59:02,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:59:02,125 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:59:02,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295313002] [2021-11-21 01:59:02,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295313002] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:59:02,125 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:59:02,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:59:02,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853253828] [2021-11-21 01:59:02,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:59:02,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:59:02,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:59:02,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:59:02,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:59:02,127 INFO L87 Difference]: Start difference. First operand 88 states and 106 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:59:02,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:59:02,221 INFO L93 Difference]: Finished difference Result 106 states and 121 transitions. [2021-11-21 01:59:02,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:59:02,221 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-21 01:59:02,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:59:02,223 INFO L225 Difference]: With dead ends: 106 [2021-11-21 01:59:02,223 INFO L226 Difference]: Without dead ends: 106 [2021-11-21 01:59:02,223 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:59:02,226 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 83 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:59:02,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 86 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:59:02,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-11-21 01:59:02,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 88. [2021-11-21 01:59:02,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 69 states have (on average 1.5072463768115942) internal successors, (104), 87 states have internal predecessors, (104), 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) [2021-11-21 01:59:02,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 104 transitions. [2021-11-21 01:59:02,231 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 104 transitions. Word has length 13 [2021-11-21 01:59:02,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:59:02,232 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 104 transitions. [2021-11-21 01:59:02,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:59:02,232 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 104 transitions. [2021-11-21 01:59:02,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-21 01:59:02,233 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:59:02,233 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:59:02,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-21 01:59:02,233 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 56 more)] === [2021-11-21 01:59:02,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:59:02,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1916789186, now seen corresponding path program 1 times [2021-11-21 01:59:02,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:59:02,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665670307] [2021-11-21 01:59:02,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:59:02,234 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:59:02,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 01:59:02,244 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-21 01:59:02,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 01:59:02,272 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-21 01:59:02,273 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-21 01:59:02,274 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK (59 of 60 remaining) [2021-11-21 01:59:02,275 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION (58 of 60 remaining) [2021-11-21 01:59:02,276 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION (57 of 60 remaining) [2021-11-21 01:59:02,276 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION (56 of 60 remaining) [2021-11-21 01:59:02,276 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION (55 of 60 remaining) [2021-11-21 01:59:02,276 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION (54 of 60 remaining) [2021-11-21 01:59:02,276 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION (53 of 60 remaining) [2021-11-21 01:59:02,276 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION (52 of 60 remaining) [2021-11-21 01:59:02,277 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION (51 of 60 remaining) [2021-11-21 01:59:02,277 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION (50 of 60 remaining) [2021-11-21 01:59:02,277 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION (49 of 60 remaining) [2021-11-21 01:59:02,277 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATION (48 of 60 remaining) [2021-11-21 01:59:02,277 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATION (47 of 60 remaining) [2021-11-21 01:59:02,277 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATION (46 of 60 remaining) [2021-11-21 01:59:02,278 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATION (45 of 60 remaining) [2021-11-21 01:59:02,278 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATION (44 of 60 remaining) [2021-11-21 01:59:02,278 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATION (43 of 60 remaining) [2021-11-21 01:59:02,278 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATION (42 of 60 remaining) [2021-11-21 01:59:02,278 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATION (41 of 60 remaining) [2021-11-21 01:59:02,278 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATION (40 of 60 remaining) [2021-11-21 01:59:02,278 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATION (39 of 60 remaining) [2021-11-21 01:59:02,279 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATION (38 of 60 remaining) [2021-11-21 01:59:02,279 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATION (37 of 60 remaining) [2021-11-21 01:59:02,279 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATION (36 of 60 remaining) [2021-11-21 01:59:02,279 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATION (35 of 60 remaining) [2021-11-21 01:59:02,279 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATION (34 of 60 remaining) [2021-11-21 01:59:02,279 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATION (33 of 60 remaining) [2021-11-21 01:59:02,280 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATION (32 of 60 remaining) [2021-11-21 01:59:02,280 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATION (31 of 60 remaining) [2021-11-21 01:59:02,280 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28REQUIRES_VIOLATION (30 of 60 remaining) [2021-11-21 01:59:02,280 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29REQUIRES_VIOLATION (29 of 60 remaining) [2021-11-21 01:59:02,280 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30REQUIRES_VIOLATION (28 of 60 remaining) [2021-11-21 01:59:02,280 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31REQUIRES_VIOLATION (27 of 60 remaining) [2021-11-21 01:59:02,280 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32REQUIRES_VIOLATION (26 of 60 remaining) [2021-11-21 01:59:02,281 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33REQUIRES_VIOLATION (25 of 60 remaining) [2021-11-21 01:59:02,281 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34REQUIRES_VIOLATION (24 of 60 remaining) [2021-11-21 01:59:02,281 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35REQUIRES_VIOLATION (23 of 60 remaining) [2021-11-21 01:59:02,281 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36REQUIRES_VIOLATION (22 of 60 remaining) [2021-11-21 01:59:02,281 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37REQUIRES_VIOLATION (21 of 60 remaining) [2021-11-21 01:59:02,281 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr38REQUIRES_VIOLATION (20 of 60 remaining) [2021-11-21 01:59:02,282 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr39REQUIRES_VIOLATION (19 of 60 remaining) [2021-11-21 01:59:02,282 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr40REQUIRES_VIOLATION (18 of 60 remaining) [2021-11-21 01:59:02,282 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr41REQUIRES_VIOLATION (17 of 60 remaining) [2021-11-21 01:59:02,282 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr42REQUIRES_VIOLATION (16 of 60 remaining) [2021-11-21 01:59:02,282 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr43REQUIRES_VIOLATION (15 of 60 remaining) [2021-11-21 01:59:02,282 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr45REQUIRES_VIOLATION (14 of 60 remaining) [2021-11-21 01:59:02,282 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr46REQUIRES_VIOLATION (13 of 60 remaining) [2021-11-21 01:59:02,283 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr47REQUIRES_VIOLATION (12 of 60 remaining) [2021-11-21 01:59:02,283 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr48REQUIRES_VIOLATION (11 of 60 remaining) [2021-11-21 01:59:02,283 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr49REQUIRES_VIOLATION (10 of 60 remaining) [2021-11-21 01:59:02,283 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr50REQUIRES_VIOLATION (9 of 60 remaining) [2021-11-21 01:59:02,283 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr51REQUIRES_VIOLATION (8 of 60 remaining) [2021-11-21 01:59:02,283 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr52REQUIRES_VIOLATION (7 of 60 remaining) [2021-11-21 01:59:02,284 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr53ASSERT_VIOLATIONMEMORY_FREE (6 of 60 remaining) [2021-11-21 01:59:02,284 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_FREE (5 of 60 remaining) [2021-11-21 01:59:02,284 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr55ASSERT_VIOLATIONMEMORY_FREE (4 of 60 remaining) [2021-11-21 01:59:02,284 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_FREE (3 of 60 remaining) [2021-11-21 01:59:02,284 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE (2 of 60 remaining) [2021-11-21 01:59:02,285 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE (1 of 60 remaining) [2021-11-21 01:59:02,285 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_LEAK (0 of 60 remaining) [2021-11-21 01:59:02,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-21 01:59:02,288 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:59:02,292 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-21 01:59:02,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 01:59:02 BoogieIcfgContainer [2021-11-21 01:59:02,315 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-21 01:59:02,315 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-21 01:59:02,315 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-21 01:59:02,317 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-21 01:59:02,318 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:58:59" (3/4) ... [2021-11-21 01:59:02,320 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-21 01:59:02,374 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba96263-db21-4cb8-98ff-a7a15aa84567/bin/utaipan-TEXQjIfE4P/witness.graphml [2021-11-21 01:59:02,374 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-21 01:59:02,375 INFO L158 Benchmark]: Toolchain (without parser) took 4187.96ms. Allocated memory was 92.3MB in the beginning and 127.9MB in the end (delta: 35.7MB). Free memory was 55.5MB in the beginning and 57.0MB in the end (delta: -1.5MB). Peak memory consumption was 33.7MB. Max. memory is 16.1GB. [2021-11-21 01:59:02,375 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 92.3MB. Free memory was 64.5MB in the beginning and 64.5MB in the end (delta: 25.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:59:02,376 INFO L158 Benchmark]: CACSL2BoogieTranslator took 461.08ms. Allocated memory was 92.3MB in the beginning and 127.9MB in the end (delta: 35.7MB). Free memory was 55.4MB in the beginning and 96.6MB in the end (delta: -41.1MB). Peak memory consumption was 10.0MB. Max. memory is 16.1GB. [2021-11-21 01:59:02,376 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.98ms. Allocated memory is still 127.9MB. Free memory was 96.6MB in the beginning and 94.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 01:59:02,377 INFO L158 Benchmark]: Boogie Preprocessor took 42.38ms. Allocated memory is still 127.9MB. Free memory was 94.5MB in the beginning and 92.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 01:59:02,377 INFO L158 Benchmark]: RCFGBuilder took 763.98ms. Allocated memory is still 127.9MB. Free memory was 92.8MB in the beginning and 102.7MB in the end (delta: -9.9MB). Peak memory consumption was 28.4MB. Max. memory is 16.1GB. [2021-11-21 01:59:02,378 INFO L158 Benchmark]: TraceAbstraction took 2799.26ms. Allocated memory is still 127.9MB. Free memory was 102.0MB in the beginning and 59.1MB in the end (delta: 42.8MB). Peak memory consumption was 43.4MB. Max. memory is 16.1GB. [2021-11-21 01:59:02,379 INFO L158 Benchmark]: Witness Printer took 58.74ms. Allocated memory is still 127.9MB. Free memory was 59.1MB in the beginning and 57.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 01:59:02,381 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 92.3MB. Free memory was 64.5MB in the beginning and 64.5MB in the end (delta: 25.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 461.08ms. Allocated memory was 92.3MB in the beginning and 127.9MB in the end (delta: 35.7MB). Free memory was 55.4MB in the beginning and 96.6MB in the end (delta: -41.1MB). Peak memory consumption was 10.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.98ms. Allocated memory is still 127.9MB. Free memory was 96.6MB in the beginning and 94.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.38ms. Allocated memory is still 127.9MB. Free memory was 94.5MB in the beginning and 92.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 763.98ms. Allocated memory is still 127.9MB. Free memory was 92.8MB in the beginning and 102.7MB in the end (delta: -9.9MB). Peak memory consumption was 28.4MB. Max. memory is 16.1GB. * TraceAbstraction took 2799.26ms. Allocated memory is still 127.9MB. Free memory was 102.0MB in the beginning and 59.1MB in the end (delta: 42.8MB). Peak memory consumption was 43.4MB. Max. memory is 16.1GB. * Witness Printer took 58.74ms. Allocated memory is still 127.9MB. Free memory was 59.1MB in the beginning and 57.0MB in the end (delta: 2.1MB). 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: 1007]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L996] SLL* head = malloc(sizeof(SLL)); [L997] head->next = ((void*)0) [L998] COND FALSE !(__VERIFIER_nondet_int()) [L998] COND FALSE !(__VERIFIER_nondet_int()) [L998] head->data = 0 VAL [head={-1:0}] [L998] head->opt = head VAL [head={-1:0}] [L999] SLL* x = head; VAL [head={-1:0}, x={-1:0}] [L1001] COND FALSE !(__VERIFIER_nondet_int()) [L1004] x = head VAL [head={-1:0}, x={-1:0}] [L1005] COND TRUE x != ((void*)0) VAL [head={-1:0}, x={-1:0}] [L1007] EXPR x->data [L1007] EXPR x->data == 2 && x->opt == x VAL [head={-1:0}, x={-1:0}, x->data=0, x->data == 2 && x->opt == x=0] [L1007] COND TRUE !(x->data == 2 && x->opt == x) [L1007] reach_error() VAL [head={-1:0}, x={-1:0}] - UnprovableResult [Line: 997]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 997]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 998]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 998]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 998]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 998]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 998]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 998]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 998]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 998]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 998]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 998]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 998]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 998]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 998]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 998]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 998]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 998]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1001]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1001]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1001]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1001]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1001]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1001]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1001]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1001]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1001]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1001]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1001]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1001]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1001]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1001]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1001]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1001]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1001]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1001]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1001]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1001]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1001]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1001]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1007]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1007]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1007]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1007]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1008]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1008]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1016]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1016]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1017]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1017]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1018]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1018]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1018]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1018]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1018]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1019]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1019]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1019]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 993]: 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 1 procedures, 110 locations, 60 error locations. Started 1 CEGAR loops. OverallTime: 2.7s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 640 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 640 mSDsluCounter, 1033 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 589 mSDsCounter, 126 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1131 IncrementalHoareTripleChecker+Invalid, 1257 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 126 mSolverCounterUnsat, 465 mSDtfsCounter, 1131 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=110occurred in iteration=0, InterpolantAutomatonStates: 42, 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, 82 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 66 ConstructedInterpolants, 0 QuantifiedInterpolants, 357 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 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! [2021-11-21 01:59:02,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba96263-db21-4cb8-98ff-a7a15aa84567/bin/utaipan-TEXQjIfE4P/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)