./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/test-0019-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0019-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 40afad058466dec508429aba14a695fa830becbd8e90e3307f02f796ff077dad ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0019-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 40afad058466dec508429aba14a695fa830becbd8e90e3307f02f796ff077dad ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:47:36,828 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:47:36,832 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:47:36,903 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:47:36,904 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:47:36,909 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:47:36,911 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:47:36,916 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:47:36,919 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:47:36,926 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:47:36,928 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:47:36,930 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:47:36,931 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:47:36,934 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:47:36,936 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:47:36,942 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:47:36,944 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:47:36,945 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:47:36,949 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:47:36,960 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:47:36,963 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:47:36,965 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:47:36,969 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:47:36,971 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:47:36,982 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:47:36,982 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:47:36,983 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:47:36,985 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:47:36,986 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:47:36,988 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:47:36,988 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:47:36,990 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:47:36,992 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:47:36,993 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:47:36,995 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:47:36,996 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:47:36,996 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:47:36,997 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:47:36,997 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:47:36,998 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:47:36,999 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:47:37,000 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-28 23:47:37,051 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:47:37,051 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:47:37,052 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:47:37,052 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:47:37,054 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:47:37,054 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:47:37,055 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:47:37,055 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:47:37,055 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:47:37,056 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 23:47:37,057 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:47:37,057 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:47:37,058 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:47:37,058 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 23:47:37,058 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 23:47:37,059 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 23:47:37,059 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:47:37,059 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 23:47:37,060 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:47:37,060 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:47:37,060 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:47:37,061 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:47:37,061 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:47:37,061 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:47:37,062 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:47:37,062 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:47:37,062 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:47:37,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 23:47:37,063 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:47:37,065 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 40afad058466dec508429aba14a695fa830becbd8e90e3307f02f796ff077dad [2021-10-28 23:47:37,373 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:47:37,408 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:47:37,411 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:47:37,413 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:47:37,414 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:47:37,415 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/memsafety/test-0019-2.i [2021-10-28 23:47:37,532 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD/data/11326b718/a9e763e60b67442ab3d130b29252a9a2/FLAGc43c5baa9 [2021-10-28 23:47:38,258 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:47:38,259 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/sv-benchmarks/c/memsafety/test-0019-2.i [2021-10-28 23:47:38,290 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD/data/11326b718/a9e763e60b67442ab3d130b29252a9a2/FLAGc43c5baa9 [2021-10-28 23:47:38,540 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD/data/11326b718/a9e763e60b67442ab3d130b29252a9a2 [2021-10-28 23:47:38,546 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:47:38,550 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 23:47:38,555 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:47:38,556 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:47:38,560 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:47:38,561 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:47:38" (1/1) ... [2021-10-28 23:47:38,562 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35c0bb12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:47:38, skipping insertion in model container [2021-10-28 23:47:38,563 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:47:38" (1/1) ... [2021-10-28 23:47:38,572 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:47:38,648 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:47:38,985 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:47:38,996 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:47:39,043 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:47:39,085 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:47:39,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:47:39 WrapperNode [2021-10-28 23:47:39,089 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:47:39,090 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:47:39,091 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:47:39,091 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:47:39,106 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:47:39" (1/1) ... [2021-10-28 23:47:39,108 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:47:39" (1/1) ... [2021-10-28 23:47:39,153 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:47:39" (1/1) ... [2021-10-28 23:47:39,153 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:47:39" (1/1) ... [2021-10-28 23:47:39,177 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:47:39" (1/1) ... [2021-10-28 23:47:39,187 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:47:39" (1/1) ... [2021-10-28 23:47:39,194 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:47:39" (1/1) ... [2021-10-28 23:47:39,208 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:47:39,218 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:47:39,218 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:47:39,218 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:47:39,220 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:47:39" (1/1) ... [2021-10-28 23:47:39,229 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:47:39,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:47:39,260 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:47:39,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:47:39,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 23:47:39,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:47:39,312 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-28 23:47:39,313 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-28 23:47:39,313 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-28 23:47:39,313 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-28 23:47:39,313 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-28 23:47:39,313 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-28 23:47:39,314 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_data [2021-10-28 23:47:39,314 INFO L138 BoogieDeclarations]: Found implementation of procedure free_data [2021-10-28 23:47:39,314 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 23:47:39,314 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 23:47:39,315 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-28 23:47:39,315 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-28 23:47:39,315 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-28 23:47:39,315 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-28 23:47:39,316 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:47:39,316 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-28 23:47:39,316 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-28 23:47:39,316 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-28 23:47:39,316 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-28 23:47:39,317 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-28 23:47:39,317 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-28 23:47:39,317 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-28 23:47:39,317 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-28 23:47:39,318 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-28 23:47:39,318 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-28 23:47:39,318 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-28 23:47:39,318 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-28 23:47:39,318 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-28 23:47:39,319 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-28 23:47:39,319 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-28 23:47:39,319 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-28 23:47:39,319 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-28 23:47:39,320 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-28 23:47:39,320 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-28 23:47:39,320 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-28 23:47:39,320 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-28 23:47:39,320 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-28 23:47:39,321 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-28 23:47:39,321 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-28 23:47:39,321 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-28 23:47:39,321 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-28 23:47:39,322 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-28 23:47:39,322 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-28 23:47:39,322 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-28 23:47:39,322 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-28 23:47:39,322 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-28 23:47:39,323 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-28 23:47:39,323 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-28 23:47:39,323 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-28 23:47:39,323 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-28 23:47:39,324 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-28 23:47:39,324 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-28 23:47:39,324 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-28 23:47:39,324 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-28 23:47:39,325 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-28 23:47:39,325 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-28 23:47:39,325 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-28 23:47:39,325 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-28 23:47:39,325 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-28 23:47:39,326 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-28 23:47:39,326 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-28 23:47:39,326 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-28 23:47:39,326 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-28 23:47:39,327 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-28 23:47:39,327 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-28 23:47:39,327 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-28 23:47:39,327 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-28 23:47:39,327 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-28 23:47:39,328 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-28 23:47:39,328 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-28 23:47:39,328 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-28 23:47:39,328 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-28 23:47:39,329 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-28 23:47:39,329 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-28 23:47:39,329 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-28 23:47:39,329 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-28 23:47:39,329 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-28 23:47:39,330 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-28 23:47:39,330 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-28 23:47:39,330 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-28 23:47:39,330 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-28 23:47:39,331 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-28 23:47:39,331 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-28 23:47:39,331 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-28 23:47:39,331 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-28 23:47:39,331 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-28 23:47:39,332 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-28 23:47:39,332 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-28 23:47:39,332 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-28 23:47:39,332 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-28 23:47:39,333 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-28 23:47:39,333 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-28 23:47:39,333 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-28 23:47:39,333 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-28 23:47:39,333 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-28 23:47:39,334 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-28 23:47:39,334 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-28 23:47:39,334 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-28 23:47:39,334 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-28 23:47:39,334 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-28 23:47:39,335 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-28 23:47:39,335 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-28 23:47:39,335 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-28 23:47:39,335 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-28 23:47:39,336 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-28 23:47:39,336 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-28 23:47:39,336 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-28 23:47:39,336 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-28 23:47:39,336 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-28 23:47:39,337 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-28 23:47:39,337 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-28 23:47:39,337 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-28 23:47:39,337 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-28 23:47:39,338 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-28 23:47:39,338 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-28 23:47:39,338 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-28 23:47:39,338 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-28 23:47:39,338 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-28 23:47:39,339 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-28 23:47:39,339 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-28 23:47:39,339 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-28 23:47:39,339 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_data [2021-10-28 23:47:39,339 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 23:47:39,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 23:47:39,340 INFO L130 BoogieDeclarations]: Found specification of procedure free_data [2021-10-28 23:47:39,340 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 23:47:39,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 23:47:39,341 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 23:47:39,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 23:47:39,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:47:39,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:47:39,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 23:47:39,342 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 23:47:39,876 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:47:39,876 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-10-28 23:47:39,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:47:39 BoogieIcfgContainer [2021-10-28 23:47:39,879 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:47:39,881 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:47:39,882 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:47:39,886 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:47:39,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:47:38" (1/3) ... [2021-10-28 23:47:39,887 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47af23fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:47:39, skipping insertion in model container [2021-10-28 23:47:39,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:47:39" (2/3) ... [2021-10-28 23:47:39,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47af23fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:47:39, skipping insertion in model container [2021-10-28 23:47:39,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:47:39" (3/3) ... [2021-10-28 23:47:39,890 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0019-2.i [2021-10-28 23:47:39,896 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:47:39,897 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2021-10-28 23:47:39,951 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:47:39,959 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 [2021-10-28 23:47:39,959 INFO L340 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2021-10-28 23:47:39,976 INFO L276 IsEmpty]: Start isEmpty. Operand has 55 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 46 states have internal predecessors, (47), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-10-28 23:47:39,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-28 23:47:39,985 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:47:39,985 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:47:39,986 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting alloc_dataErr0REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-10-28 23:47:39,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:47:39,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1420223000, now seen corresponding path program 1 times [2021-10-28 23:47:40,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:47:40,001 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362059552] [2021-10-28 23:47:40,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:47:40,002 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:47:40,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:47:40,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:47:40,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:47:40,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:47:40,312 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:47:40,313 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362059552] [2021-10-28 23:47:40,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362059552] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:47:40,314 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:47:40,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 23:47:40,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198804844] [2021-10-28 23:47:40,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:47:40,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:47:40,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:47:40,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:47:40,343 INFO L87 Difference]: Start difference. First operand has 55 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 46 states have internal predecessors, (47), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 6 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:47:40,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:47:40,640 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2021-10-28 23:47:40,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:47:40,642 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-10-28 23:47:40,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:47:40,652 INFO L225 Difference]: With dead ends: 62 [2021-10-28 23:47:40,652 INFO L226 Difference]: Without dead ends: 59 [2021-10-28 23:47:40,654 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:47:40,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-10-28 23:47:40,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 50. [2021-10-28 23:47:40,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 42 states have internal predecessors, (43), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 23:47:40,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2021-10-28 23:47:40,703 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 9 [2021-10-28 23:47:40,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:47:40,704 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2021-10-28 23:47:40,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:47:40,704 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2021-10-28 23:47:40,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-28 23:47:40,705 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:47:40,705 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:47:40,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 23:47:40,706 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting alloc_dataErr1REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-10-28 23:47:40,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:47:40,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1420222999, now seen corresponding path program 1 times [2021-10-28 23:47:40,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:47:40,711 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054656342] [2021-10-28 23:47:40,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:47:40,713 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:47:40,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:47:40,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:47:40,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:47:40,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:47:40,900 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:47:40,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054656342] [2021-10-28 23:47:40,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054656342] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:47:40,901 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:47:40,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 23:47:40,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429822213] [2021-10-28 23:47:40,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:47:40,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:47:40,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:47:40,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:47:40,905 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand has 6 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:47:41,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:47:41,143 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2021-10-28 23:47:41,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 23:47:41,143 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-10-28 23:47:41,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:47:41,145 INFO L225 Difference]: With dead ends: 58 [2021-10-28 23:47:41,145 INFO L226 Difference]: Without dead ends: 58 [2021-10-28 23:47:41,146 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:47:41,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-10-28 23:47:41,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 49. [2021-10-28 23:47:41,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 41 states have internal predecessors, (42), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 23:47:41,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2021-10-28 23:47:41,154 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 9 [2021-10-28 23:47:41,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:47:41,155 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2021-10-28 23:47:41,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:47:41,155 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2021-10-28 23:47:41,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 23:47:41,156 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:47:41,156 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:47:41,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 23:47:41,157 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting alloc_dataErr3REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-10-28 23:47:41,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:47:41,157 INFO L85 PathProgramCache]: Analyzing trace with hash 965296970, now seen corresponding path program 1 times [2021-10-28 23:47:41,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:47:41,158 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852681520] [2021-10-28 23:47:41,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:47:41,159 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:47:41,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:47:41,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:47:41,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:47:41,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:47:41,376 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:47:41,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852681520] [2021-10-28 23:47:41,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852681520] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:47:41,379 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:47:41,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 23:47:41,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664515548] [2021-10-28 23:47:41,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:47:41,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:47:41,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:47:41,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:47:41,384 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand has 7 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:47:41,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:47:41,666 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2021-10-28 23:47:41,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:47:41,677 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-10-28 23:47:41,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:47:41,681 INFO L225 Difference]: With dead ends: 57 [2021-10-28 23:47:41,682 INFO L226 Difference]: Without dead ends: 57 [2021-10-28 23:47:41,683 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:47:41,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-10-28 23:47:41,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 48. [2021-10-28 23:47:41,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 26 states have (on average 1.5769230769230769) internal successors, (41), 40 states have internal predecessors, (41), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 23:47:41,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2021-10-28 23:47:41,698 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 11 [2021-10-28 23:47:41,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:47:41,698 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2021-10-28 23:47:41,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:47:41,699 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2021-10-28 23:47:41,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 23:47:41,700 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:47:41,700 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:47:41,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 23:47:41,700 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting free_dataErr0REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-10-28 23:47:41,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:47:41,705 INFO L85 PathProgramCache]: Analyzing trace with hash -2075049684, now seen corresponding path program 1 times [2021-10-28 23:47:41,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:47:41,705 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607807824] [2021-10-28 23:47:41,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:47:41,706 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:47:41,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:47:41,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:47:41,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:47:41,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 23:47:41,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:47:41,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:47:41,969 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:47:41,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607807824] [2021-10-28 23:47:41,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607807824] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:47:41,970 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:47:41,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 23:47:41,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267035036] [2021-10-28 23:47:41,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 23:47:41,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:47:41,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 23:47:41,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:47:41,972 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 23:47:42,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:47:42,346 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2021-10-28 23:47:42,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 23:47:42,347 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2021-10-28 23:47:42,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:47:42,348 INFO L225 Difference]: With dead ends: 52 [2021-10-28 23:47:42,348 INFO L226 Difference]: Without dead ends: 52 [2021-10-28 23:47:42,348 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-10-28 23:47:42,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-28 23:47:42,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2021-10-28 23:47:42,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 38 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 23:47:42,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2021-10-28 23:47:42,355 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 17 [2021-10-28 23:47:42,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:47:42,355 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2021-10-28 23:47:42,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 23:47:42,356 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2021-10-28 23:47:42,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 23:47:42,357 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:47:42,357 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:47:42,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 23:47:42,357 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting free_dataErr1REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-10-28 23:47:42,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:47:42,358 INFO L85 PathProgramCache]: Analyzing trace with hash -2075049683, now seen corresponding path program 1 times [2021-10-28 23:47:42,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:47:42,359 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382881419] [2021-10-28 23:47:42,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:47:42,359 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:47:42,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:47:42,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:47:42,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:47:42,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 23:47:42,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:47:42,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:47:42,548 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:47:42,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382881419] [2021-10-28 23:47:42,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382881419] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:47:42,549 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:47:42,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 23:47:42,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604977422] [2021-10-28 23:47:42,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 23:47:42,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:47:42,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 23:47:42,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-10-28 23:47:42,552 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand has 11 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 23:47:43,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:47:43,048 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2021-10-28 23:47:43,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 23:47:43,050 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2021-10-28 23:47:43,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:47:43,055 INFO L225 Difference]: With dead ends: 45 [2021-10-28 23:47:43,055 INFO L226 Difference]: Without dead ends: 45 [2021-10-28 23:47:43,056 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2021-10-28 23:47:43,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-10-28 23:47:43,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 42. [2021-10-28 23:47:43,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 34 states have internal predecessors, (35), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 23:47:43,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2021-10-28 23:47:43,073 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 17 [2021-10-28 23:47:43,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:47:43,073 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2021-10-28 23:47:43,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 23:47:43,074 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2021-10-28 23:47:43,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-28 23:47:43,074 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:47:43,075 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:47:43,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 23:47:43,075 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting free_dataErr4ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-10-28 23:47:43,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:47:43,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1129452196, now seen corresponding path program 1 times [2021-10-28 23:47:43,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:47:43,076 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976763329] [2021-10-28 23:47:43,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:47:43,077 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:47:43,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:47:43,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:47:43,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:47:43,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 23:47:43,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:47:43,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:47:43,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:47:43,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976763329] [2021-10-28 23:47:43,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976763329] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:47:43,342 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:47:43,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-28 23:47:43,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760847012] [2021-10-28 23:47:43,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 23:47:43,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:47:43,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 23:47:43,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2021-10-28 23:47:43,344 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand has 12 states, 10 states have (on average 1.6) internal successors, (16), 8 states have internal predecessors, (16), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 23:47:43,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:47:43,766 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2021-10-28 23:47:43,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 23:47:43,767 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.6) internal successors, (16), 8 states have internal predecessors, (16), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2021-10-28 23:47:43,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:47:43,768 INFO L225 Difference]: With dead ends: 44 [2021-10-28 23:47:43,768 INFO L226 Difference]: Without dead ends: 44 [2021-10-28 23:47:43,768 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2021-10-28 23:47:43,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-10-28 23:47:43,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2021-10-28 23:47:43,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 33 states have internal predecessors, (34), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 23:47:43,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2021-10-28 23:47:43,773 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 22 [2021-10-28 23:47:43,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:47:43,773 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2021-10-28 23:47:43,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.6) internal successors, (16), 8 states have internal predecessors, (16), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 23:47:43,773 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2021-10-28 23:47:43,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-28 23:47:43,774 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:47:43,774 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:47:43,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 23:47:43,775 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting free_dataErr5ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-10-28 23:47:43,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:47:43,775 INFO L85 PathProgramCache]: Analyzing trace with hash -653279632, now seen corresponding path program 1 times [2021-10-28 23:47:43,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:47:43,776 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709072262] [2021-10-28 23:47:43,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:47:43,776 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:47:43,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:47:43,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:47:43,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:47:43,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 23:47:43,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:47:44,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:47:44,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:47:44,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709072262] [2021-10-28 23:47:44,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709072262] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:47:44,027 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:47:44,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-28 23:47:44,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477526278] [2021-10-28 23:47:44,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 23:47:44,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:47:44,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 23:47:44,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2021-10-28 23:47:44,029 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 8 states have internal predecessors, (17), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 23:47:44,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:47:44,520 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2021-10-28 23:47:44,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-28 23:47:44,521 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.7) internal successors, (17), 8 states have internal predecessors, (17), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2021-10-28 23:47:44,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:47:44,522 INFO L225 Difference]: With dead ends: 43 [2021-10-28 23:47:44,522 INFO L226 Difference]: Without dead ends: 43 [2021-10-28 23:47:44,523 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2021-10-28 23:47:44,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-10-28 23:47:44,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2021-10-28 23:47:44,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 32 states have internal predecessors, (33), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 23:47:44,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2021-10-28 23:47:44,527 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 23 [2021-10-28 23:47:44,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:47:44,528 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2021-10-28 23:47:44,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.7) internal successors, (17), 8 states have internal predecessors, (17), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 23:47:44,528 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2021-10-28 23:47:44,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-28 23:47:44,529 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:47:44,529 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:47:44,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-28 23:47:44,530 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting free_dataErr6ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-10-28 23:47:44,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:47:44,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1223167966, now seen corresponding path program 1 times [2021-10-28 23:47:44,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:47:44,531 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474428710] [2021-10-28 23:47:44,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:47:44,532 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:47:44,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:47:44,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:47:44,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:47:44,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 23:47:44,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:47:44,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:47:44,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:47:44,768 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474428710] [2021-10-28 23:47:44,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474428710] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:47:44,768 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:47:44,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-28 23:47:44,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178805561] [2021-10-28 23:47:44,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 23:47:44,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:47:44,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 23:47:44,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2021-10-28 23:47:44,771 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand has 12 states, 10 states have (on average 1.8) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 23:47:45,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:47:45,181 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2021-10-28 23:47:45,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 23:47:45,181 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.8) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2021-10-28 23:47:45,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:47:45,182 INFO L225 Difference]: With dead ends: 42 [2021-10-28 23:47:45,182 INFO L226 Difference]: Without dead ends: 42 [2021-10-28 23:47:45,183 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2021-10-28 23:47:45,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-10-28 23:47:45,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2021-10-28 23:47:45,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 31 states have internal predecessors, (32), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 23:47:45,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2021-10-28 23:47:45,187 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 24 [2021-10-28 23:47:45,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:47:45,188 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2021-10-28 23:47:45,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.8) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 23:47:45,188 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2021-10-28 23:47:45,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-28 23:47:45,189 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:47:45,190 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:47:45,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-28 23:47:45,190 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting free_dataErr7ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-10-28 23:47:45,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:47:45,191 INFO L85 PathProgramCache]: Analyzing trace with hash -736498638, now seen corresponding path program 1 times [2021-10-28 23:47:45,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:47:45,191 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64333802] [2021-10-28 23:47:45,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:47:45,192 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:47:45,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:47:45,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:47:45,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:47:45,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 23:47:45,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:47:45,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:47:45,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:47:45,293 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64333802] [2021-10-28 23:47:45,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64333802] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:47:45,299 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:47:45,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 23:47:45,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98556866] [2021-10-28 23:47:45,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:47:45,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:47:45,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:47:45,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:47:45,302 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 23:47:45,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:47:45,476 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2021-10-28 23:47:45,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 23:47:45,476 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 25 [2021-10-28 23:47:45,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:47:45,477 INFO L225 Difference]: With dead ends: 41 [2021-10-28 23:47:45,477 INFO L226 Difference]: Without dead ends: 41 [2021-10-28 23:47:45,478 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:47:45,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-10-28 23:47:45,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2021-10-28 23:47:45,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 30 states have internal predecessors, (31), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 23:47:45,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2021-10-28 23:47:45,482 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 25 [2021-10-28 23:47:45,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:47:45,483 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2021-10-28 23:47:45,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 23:47:45,483 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2021-10-28 23:47:45,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-28 23:47:45,484 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:47:45,484 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:47:45,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-28 23:47:45,485 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting free_dataErr8ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-10-28 23:47:45,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:47:45,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1356621216, now seen corresponding path program 1 times [2021-10-28 23:47:45,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:47:45,485 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036154526] [2021-10-28 23:47:45,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:47:45,486 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:47:45,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:47:45,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:47:45,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:47:45,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 23:47:45,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:47:45,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:47:45,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:47:45,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036154526] [2021-10-28 23:47:45,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036154526] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:47:45,762 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:47:45,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-10-28 23:47:45,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96156823] [2021-10-28 23:47:45,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-28 23:47:45,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:47:45,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-28 23:47:45,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-10-28 23:47:45,764 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand has 15 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 11 states have internal predecessors, (20), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 23:47:46,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:47:46,297 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2021-10-28 23:47:46,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-28 23:47:46,298 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 11 states have internal predecessors, (20), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2021-10-28 23:47:46,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:47:46,299 INFO L225 Difference]: With dead ends: 40 [2021-10-28 23:47:46,299 INFO L226 Difference]: Without dead ends: 40 [2021-10-28 23:47:46,300 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2021-10-28 23:47:46,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-10-28 23:47:46,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2021-10-28 23:47:46,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 29 states have internal predecessors, (30), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 23:47:46,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2021-10-28 23:47:46,303 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 26 [2021-10-28 23:47:46,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:47:46,304 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2021-10-28 23:47:46,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 11 states have internal predecessors, (20), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 23:47:46,309 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2021-10-28 23:47:46,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-28 23:47:46,311 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:47:46,311 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:47:46,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-28 23:47:46,312 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-10-28 23:47:46,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:47:46,313 INFO L85 PathProgramCache]: Analyzing trace with hash 849725517, now seen corresponding path program 1 times [2021-10-28 23:47:46,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:47:46,313 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479503518] [2021-10-28 23:47:46,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:47:46,315 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:47:46,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:47:46,347 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:47:46,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:47:46,406 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:47:46,407 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 23:47:46,408 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK [2021-10-28 23:47:46,411 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_dataErr0REQUIRES_VIOLATION [2021-10-28 23:47:46,411 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_dataErr1REQUIRES_VIOLATION [2021-10-28 23:47:46,412 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_dataErr2REQUIRES_VIOLATION [2021-10-28 23:47:46,414 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_dataErr3REQUIRES_VIOLATION [2021-10-28 23:47:46,414 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr0REQUIRES_VIOLATION [2021-10-28 23:47:46,414 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr1REQUIRES_VIOLATION [2021-10-28 23:47:46,414 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr2REQUIRES_VIOLATION [2021-10-28 23:47:46,415 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr3REQUIRES_VIOLATION [2021-10-28 23:47:46,415 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr4ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:47:46,415 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr5ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:47:46,415 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr6ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:47:46,416 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr7ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:47:46,416 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr8ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:47:46,416 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr9ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:47:46,417 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr10REQUIRES_VIOLATION [2021-10-28 23:47:46,417 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr11REQUIRES_VIOLATION [2021-10-28 23:47:46,417 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr12REQUIRES_VIOLATION [2021-10-28 23:47:46,417 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr13REQUIRES_VIOLATION [2021-10-28 23:47:46,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-28 23:47:46,422 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:47:46,426 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:47:46,458 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-10-28 23:47:46,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:47:46 BoogieIcfgContainer [2021-10-28 23:47:46,485 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:47:46,486 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:47:46,486 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:47:46,487 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:47:46,487 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:47:39" (3/4) ... [2021-10-28 23:47:46,492 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 23:47:46,492 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:47:46,496 INFO L168 Benchmark]: Toolchain (without parser) took 7943.07 ms. Allocated memory was 100.7 MB in the beginning and 159.4 MB in the end (delta: 58.7 MB). Free memory was 66.9 MB in the beginning and 79.0 MB in the end (delta: -12.1 MB). Peak memory consumption was 48.7 MB. Max. memory is 16.1 GB. [2021-10-28 23:47:46,499 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 100.7 MB. Free memory is still 53.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:47:46,500 INFO L168 Benchmark]: CACSL2BoogieTranslator took 534.13 ms. Allocated memory was 100.7 MB in the beginning and 127.9 MB in the end (delta: 27.3 MB). Free memory was 66.6 MB in the beginning and 95.5 MB in the end (delta: -28.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:47:46,501 INFO L168 Benchmark]: Boogie Preprocessor took 126.88 ms. Allocated memory is still 127.9 MB. Free memory was 95.5 MB in the beginning and 92.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:47:46,501 INFO L168 Benchmark]: RCFGBuilder took 661.45 ms. Allocated memory is still 127.9 MB. Free memory was 92.8 MB in the beginning and 72.5 MB in the end (delta: 20.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-10-28 23:47:46,502 INFO L168 Benchmark]: TraceAbstraction took 6604.00 ms. Allocated memory was 127.9 MB in the beginning and 159.4 MB in the end (delta: 31.5 MB). Free memory was 72.0 MB in the beginning and 79.0 MB in the end (delta: -7.0 MB). Peak memory consumption was 28.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:47:46,502 INFO L168 Benchmark]: Witness Printer took 5.87 ms. Allocated memory is still 159.4 MB. Free memory is still 79.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:47:46,507 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 100.7 MB. Free memory is still 53.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 534.13 ms. Allocated memory was 100.7 MB in the beginning and 127.9 MB in the end (delta: 27.3 MB). Free memory was 66.6 MB in the beginning and 95.5 MB in the end (delta: -28.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 126.88 ms. Allocated memory is still 127.9 MB. Free memory was 95.5 MB in the beginning and 92.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 661.45 ms. Allocated memory is still 127.9 MB. Free memory was 92.8 MB in the beginning and 72.5 MB in the end (delta: 20.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6604.00 ms. Allocated memory was 127.9 MB in the beginning and 159.4 MB in the end (delta: 31.5 MB). Free memory was 72.0 MB in the beginning and 79.0 MB in the end (delta: -7.0 MB). Peak memory consumption was 28.4 MB. Max. memory is 16.1 GB. * Witness Printer took 5.87 ms. Allocated memory is still 159.4 MB. Free memory is still 79.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * 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 - UnprovableResult [Line: 543]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 543. Possible FailurePath: [L544] TData data; VAL [data={3:0}] [L545] CALL alloc_data(&data) VAL [pdata={3:0}] [L529] pdata->lo = malloc(16) VAL [malloc(16)={-1:0}, pdata={3:0}, pdata={3:0}] [L530] pdata->hi = malloc(24) VAL [malloc(24)={-2:0}, pdata={3:0}, pdata={3:0}] [L545] RET alloc_data(&data) VAL [data={3:0}] [L546] CALL free_data(&data) VAL [data={3:0}] [L534] EXPR data->lo VAL [data={3:0}, data={3:0}, data->lo={-1:0}] [L534] void *lo = data->lo; [L535] EXPR data->hi VAL [data={3:0}, data={3:0}, data->hi={-2:0}, lo={-1:0}] [L535] void *hi = data->hi; [L536] COND FALSE !(lo == hi) VAL [data={3:0}, data={3:0}, hi={-2:0}, lo={-1:0}] [L540] data->lo = (void *) 0 VAL [data={3:0}, data={3:0}, hi={-2:0}, lo={-1:0}] [L541] data->hi = (void *) 0 VAL [data={3:0}, data={3:0}, hi={-2:0}, lo={-1:0}] [L546] RET free_data(&data) VAL [data={3:0}] [L547] return 0; [L547] return 0; VAL [\result=0] - UnprovableResult [Line: 529]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 529]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 530]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 530]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 535]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 535]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 537]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 537]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 537]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 73 locations, 19 error locations. Started 1 CEGAR loops. OverallTime: 6.4s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 231 SDtfs, 553 SDslu, 591 SDs, 0 SdLazy, 1758 SolverSat, 163 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 165 GetRequests, 29 SyntacticMatches, 4 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred in iteration=0, InterpolantAutomatonStates: 101, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 51 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 210 NumberOfCodeBlocks, 210 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 173 ConstructedInterpolants, 0 QuantifiedInterpolants, 1162 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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 could not prove your program: unable to determine feasibility of some traces [2021-10-28 23:47:46,566 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:47:49,284 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:47:49,289 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:47:49,356 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:47:49,357 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:47:49,362 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:47:49,365 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:47:49,373 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:47:49,377 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:47:49,384 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:47:49,385 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:47:49,388 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:47:49,388 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:47:49,391 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:47:49,394 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:47:49,399 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:47:49,401 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:47:49,402 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:47:49,405 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:47:49,414 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:47:49,417 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:47:49,419 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:47:49,421 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:47:49,424 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:47:49,436 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:47:49,437 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:47:49,438 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:47:49,440 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:47:49,441 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:47:49,442 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:47:49,443 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:47:49,444 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:47:49,447 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:47:49,448 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:47:49,450 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:47:49,450 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:47:49,451 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:47:49,452 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:47:49,460 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:47:49,462 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:47:49,463 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:47:49,470 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-28 23:47:49,524 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:47:49,524 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:47:49,525 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:47:49,526 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:47:49,528 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:47:49,529 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:47:49,529 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:47:49,529 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:47:49,530 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:47:49,530 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 23:47:49,532 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:47:49,532 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:47:49,532 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:47:49,533 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 23:47:49,533 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 23:47:49,534 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 23:47:49,534 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:47:49,535 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 23:47:49,535 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-28 23:47:49,535 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-28 23:47:49,536 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:47:49,536 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:47:49,537 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:47:49,537 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:47:49,537 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:47:49,538 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:47:49,539 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:47:49,539 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:47:49,539 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-28 23:47:49,540 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-28 23:47:49,540 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:47:49,541 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-28 23:47:49,541 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 40afad058466dec508429aba14a695fa830becbd8e90e3307f02f796ff077dad [2021-10-28 23:47:50,005 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:47:50,032 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:47:50,035 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:47:50,037 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:47:50,044 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:47:50,047 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/memsafety/test-0019-2.i [2021-10-28 23:47:50,138 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD/data/73a912917/b7771dda258a46959acc93f517ceff5a/FLAGf26f4e7fc [2021-10-28 23:47:50,898 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:47:50,899 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/sv-benchmarks/c/memsafety/test-0019-2.i [2021-10-28 23:47:50,921 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD/data/73a912917/b7771dda258a46959acc93f517ceff5a/FLAGf26f4e7fc [2021-10-28 23:47:51,094 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD/data/73a912917/b7771dda258a46959acc93f517ceff5a [2021-10-28 23:47:51,098 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:47:51,100 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 23:47:51,104 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:47:51,105 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:47:51,109 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:47:51,110 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:47:51" (1/1) ... [2021-10-28 23:47:51,112 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fa97448 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:47:51, skipping insertion in model container [2021-10-28 23:47:51,112 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:47:51" (1/1) ... [2021-10-28 23:47:51,120 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:47:51,183 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:47:51,722 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:47:51,745 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:47:51,816 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:47:51,855 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:47:51,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:47:51 WrapperNode [2021-10-28 23:47:51,856 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:47:51,857 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:47:51,857 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:47:51,857 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:47:51,871 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:47:51" (1/1) ... [2021-10-28 23:47:51,871 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:47:51" (1/1) ... [2021-10-28 23:47:51,891 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:47:51" (1/1) ... [2021-10-28 23:47:51,892 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:47:51" (1/1) ... [2021-10-28 23:47:51,913 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:47:51" (1/1) ... [2021-10-28 23:47:51,915 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:47:51" (1/1) ... [2021-10-28 23:47:51,920 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:47:51" (1/1) ... [2021-10-28 23:47:51,931 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:47:51,932 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:47:51,932 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:47:51,932 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:47:51,933 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:47:51" (1/1) ... [2021-10-28 23:47:51,944 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:47:51,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:47:51,985 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:47:51,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:47:52,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 23:47:52,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:47:52,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-10-28 23:47:52,030 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-28 23:47:52,030 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-28 23:47:52,030 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-28 23:47:52,031 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-28 23:47:52,031 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-28 23:47:52,031 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-28 23:47:52,031 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_data [2021-10-28 23:47:52,031 INFO L138 BoogieDeclarations]: Found implementation of procedure free_data [2021-10-28 23:47:52,032 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 23:47:52,032 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 23:47:52,032 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-28 23:47:52,032 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-28 23:47:52,033 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-28 23:47:52,033 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-28 23:47:52,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:47:52,033 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-28 23:47:52,033 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-28 23:47:52,034 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-28 23:47:52,034 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-28 23:47:52,034 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-28 23:47:52,034 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-28 23:47:52,034 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-28 23:47:52,035 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-28 23:47:52,035 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-28 23:47:52,035 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-28 23:47:52,035 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-28 23:47:52,035 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-28 23:47:52,036 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-28 23:47:52,036 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-28 23:47:52,036 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-28 23:47:52,036 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-28 23:47:52,036 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-28 23:47:52,037 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-28 23:47:52,037 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-28 23:47:52,037 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-28 23:47:52,037 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-28 23:47:52,037 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-28 23:47:52,037 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-28 23:47:52,038 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-28 23:47:52,038 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-28 23:47:52,038 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-28 23:47:52,038 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-28 23:47:52,038 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-28 23:47:52,039 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-28 23:47:52,039 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-28 23:47:52,039 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-28 23:47:52,039 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-28 23:47:52,039 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-28 23:47:52,040 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-28 23:47:52,040 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-28 23:47:52,040 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-28 23:47:52,040 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-28 23:47:52,041 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-28 23:47:52,041 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-28 23:47:52,041 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-28 23:47:52,041 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-28 23:47:52,041 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-28 23:47:52,041 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-28 23:47:52,042 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-28 23:47:52,042 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-28 23:47:52,042 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-28 23:47:52,042 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-28 23:47:52,042 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-28 23:47:52,043 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-28 23:47:52,043 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-28 23:47:52,043 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-28 23:47:52,043 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-28 23:47:52,043 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-28 23:47:52,044 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-28 23:47:52,044 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-28 23:47:52,044 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-28 23:47:52,044 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-28 23:47:52,044 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-28 23:47:52,045 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-28 23:47:52,045 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-28 23:47:52,045 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-28 23:47:52,045 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-28 23:47:52,045 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-28 23:47:52,046 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-28 23:47:52,046 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-28 23:47:52,046 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-28 23:47:52,046 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-28 23:47:52,046 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-28 23:47:52,047 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-28 23:47:52,047 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-28 23:47:52,047 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-28 23:47:52,047 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-28 23:47:52,047 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-28 23:47:52,047 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-28 23:47:52,048 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-28 23:47:52,048 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-28 23:47:52,048 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-28 23:47:52,048 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-28 23:47:52,048 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-28 23:47:52,049 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-28 23:47:52,049 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-28 23:47:52,049 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-28 23:47:52,049 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-28 23:47:52,049 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-28 23:47:52,050 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-28 23:47:52,050 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-28 23:47:52,050 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-28 23:47:52,050 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-28 23:47:52,050 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-28 23:47:52,050 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-28 23:47:52,051 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-28 23:47:52,051 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-28 23:47:52,051 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-28 23:47:52,051 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-28 23:47:52,051 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-28 23:47:52,052 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-28 23:47:52,052 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-28 23:47:52,052 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-28 23:47:52,052 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-28 23:47:52,052 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-28 23:47:52,053 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-28 23:47:52,053 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-28 23:47:52,053 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-28 23:47:52,053 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-28 23:47:52,053 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-28 23:47:52,054 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-28 23:47:52,054 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_data [2021-10-28 23:47:52,054 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 23:47:52,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 23:47:52,054 INFO L130 BoogieDeclarations]: Found specification of procedure free_data [2021-10-28 23:47:52,055 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 23:47:52,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 23:47:52,055 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 23:47:52,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 23:47:52,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-28 23:47:52,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:47:52,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-10-28 23:47:52,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-10-28 23:47:52,056 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-10-28 23:47:52,847 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:47:52,847 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-10-28 23:47:52,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:47:52 BoogieIcfgContainer [2021-10-28 23:47:52,851 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:47:52,855 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:47:52,855 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:47:52,859 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:47:52,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:47:51" (1/3) ... [2021-10-28 23:47:52,861 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a16782f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:47:52, skipping insertion in model container [2021-10-28 23:47:52,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:47:51" (2/3) ... [2021-10-28 23:47:52,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a16782f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:47:52, skipping insertion in model container [2021-10-28 23:47:52,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:47:52" (3/3) ... [2021-10-28 23:47:52,864 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0019-2.i [2021-10-28 23:47:52,872 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:47:52,872 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2021-10-28 23:47:52,947 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:47:52,957 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 [2021-10-28 23:47:52,958 INFO L340 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2021-10-28 23:47:52,978 INFO L276 IsEmpty]: Start isEmpty. Operand has 55 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 46 states have internal predecessors, (47), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-10-28 23:47:52,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-28 23:47:52,992 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:47:52,993 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:47:52,994 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting alloc_dataErr0REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-10-28 23:47:53,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:47:53,002 INFO L85 PathProgramCache]: Analyzing trace with hash 153654014, now seen corresponding path program 1 times [2021-10-28 23:47:53,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:47:53,018 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [756878739] [2021-10-28 23:47:53,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:47:53,020 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:47:53,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:47:53,024 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:47:53,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-28 23:47:53,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:47:53,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 23:47:53,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:47:53,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 23:47:53,475 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-28 23:47:53,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 21 [2021-10-28 23:47:53,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:47:53,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:47:53,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:47:53,635 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:47:53,635 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [756878739] [2021-10-28 23:47:53,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [756878739] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:47:53,636 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:47:53,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-10-28 23:47:53,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173753300] [2021-10-28 23:47:53,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:47:53,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:47:53,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:47:53,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:47:53,664 INFO L87 Difference]: Start difference. First operand has 55 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 46 states have internal predecessors, (47), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 6 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:47:53,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:47:53,956 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2021-10-28 23:47:53,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:47:53,958 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-10-28 23:47:53,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:47:53,967 INFO L225 Difference]: With dead ends: 53 [2021-10-28 23:47:53,968 INFO L226 Difference]: Without dead ends: 50 [2021-10-28 23:47:53,969 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:47:53,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-10-28 23:47:54,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-10-28 23:47:54,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 42 states have internal predecessors, (43), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 23:47:54,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2021-10-28 23:47:54,011 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 9 [2021-10-28 23:47:54,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:47:54,011 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2021-10-28 23:47:54,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:47:54,012 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2021-10-28 23:47:54,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-28 23:47:54,013 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:47:54,013 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:47:54,032 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-28 23:47:54,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:47:54,227 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting alloc_dataErr1REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-10-28 23:47:54,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:47:54,228 INFO L85 PathProgramCache]: Analyzing trace with hash 153654015, now seen corresponding path program 1 times [2021-10-28 23:47:54,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:47:54,229 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1929788452] [2021-10-28 23:47:54,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:47:54,230 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:47:54,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:47:54,231 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:47:54,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-28 23:47:54,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:47:54,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-28 23:47:54,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:47:54,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 23:47:54,444 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 23:47:54,560 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-28 23:47:54,561 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 29 [2021-10-28 23:47:54,570 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-28 23:47:54,571 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 22 [2021-10-28 23:47:54,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:47:54,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:47:56,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:47:56,413 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:47:56,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1929788452] [2021-10-28 23:47:56,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1929788452] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:47:56,415 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:47:56,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-28 23:47:56,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26900175] [2021-10-28 23:47:56,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 23:47:56,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:47:56,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 23:47:56,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:47:56,421 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand has 8 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:47:57,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:47:57,359 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2021-10-28 23:47:57,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 23:47:57,364 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-10-28 23:47:57,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:47:57,366 INFO L225 Difference]: With dead ends: 49 [2021-10-28 23:47:57,366 INFO L226 Difference]: Without dead ends: 49 [2021-10-28 23:47:57,367 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:47:57,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-10-28 23:47:57,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2021-10-28 23:47:57,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 41 states have internal predecessors, (42), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 23:47:57,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2021-10-28 23:47:57,375 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 9 [2021-10-28 23:47:57,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:47:57,375 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2021-10-28 23:47:57,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:47:57,376 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2021-10-28 23:47:57,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 23:47:57,377 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:47:57,377 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:47:57,395 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-28 23:47:57,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:47:57,595 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting alloc_dataErr3REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-10-28 23:47:57,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:47:57,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1632619936, now seen corresponding path program 1 times [2021-10-28 23:47:57,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:47:57,597 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1207434858] [2021-10-28 23:47:57,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:47:57,597 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:47:57,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:47:57,599 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:47:57,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-28 23:47:57,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:47:57,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-28 23:47:57,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:47:57,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 23:47:57,840 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 23:47:57,959 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-28 23:47:57,960 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 29 [2021-10-28 23:47:57,970 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-28 23:47:57,971 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 22 [2021-10-28 23:47:58,244 INFO L354 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2021-10-28 23:47:58,245 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 43 [2021-10-28 23:47:58,275 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-28 23:47:58,275 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 33 [2021-10-28 23:47:58,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:47:58,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:48:00,790 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-10-28 23:48:00,791 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2021-10-28 23:48:01,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:48:01,734 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:48:01,734 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1207434858] [2021-10-28 23:48:01,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1207434858] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:48:01,735 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:48:01,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [] total 10 [2021-10-28 23:48:01,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188412169] [2021-10-28 23:48:01,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 23:48:01,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:48:01,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 23:48:01,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=81, Unknown=1, NotChecked=0, Total=110 [2021-10-28 23:48:01,738 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand has 11 states, 8 states have (on average 1.5) internal successors, (12), 9 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:48:03,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:48:03,054 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2021-10-28 23:48:03,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 23:48:03,056 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 1.5) internal successors, (12), 9 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-10-28 23:48:03,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:48:03,058 INFO L225 Difference]: With dead ends: 48 [2021-10-28 23:48:03,058 INFO L226 Difference]: Without dead ends: 48 [2021-10-28 23:48:03,058 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=43, Invalid=112, Unknown=1, NotChecked=0, Total=156 [2021-10-28 23:48:03,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-10-28 23:48:03,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-10-28 23:48:03,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 26 states have (on average 1.5769230769230769) internal successors, (41), 40 states have internal predecessors, (41), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 23:48:03,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2021-10-28 23:48:03,076 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 11 [2021-10-28 23:48:03,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:48:03,077 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2021-10-28 23:48:03,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 1.5) internal successors, (12), 9 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:48:03,078 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2021-10-28 23:48:03,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 23:48:03,079 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:48:03,079 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:48:03,092 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-10-28 23:48:03,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:48:03,292 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting free_dataErr0REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-10-28 23:48:03,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:48:03,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1202400066, now seen corresponding path program 1 times [2021-10-28 23:48:03,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:48:03,294 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [857996822] [2021-10-28 23:48:03,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:48:03,294 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:48:03,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:48:03,296 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:48:03,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-28 23:48:03,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:48:03,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 23:48:03,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:48:03,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:48:03,631 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:48:03,818 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-10-28 23:48:03,818 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-10-28 23:48:03,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:48:03,869 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:48:03,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [857996822] [2021-10-28 23:48:03,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [857996822] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:48:03,869 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:48:03,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-10-28 23:48:03,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169764712] [2021-10-28 23:48:03,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:48:03,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:48:03,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:48:03,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:48:03,872 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand has 7 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 23:48:04,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:48:04,263 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2021-10-28 23:48:04,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 23:48:04,264 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2021-10-28 23:48:04,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:48:04,265 INFO L225 Difference]: With dead ends: 52 [2021-10-28 23:48:04,265 INFO L226 Difference]: Without dead ends: 52 [2021-10-28 23:48:04,266 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:48:04,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-28 23:48:04,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2021-10-28 23:48:04,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 38 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 23:48:04,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2021-10-28 23:48:04,275 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 17 [2021-10-28 23:48:04,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:48:04,276 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2021-10-28 23:48:04,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 23:48:04,277 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2021-10-28 23:48:04,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 23:48:04,278 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:48:04,278 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:48:04,302 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-28 23:48:04,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:48:04,492 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting free_dataErr1REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-10-28 23:48:04,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:48:04,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1202400067, now seen corresponding path program 1 times [2021-10-28 23:48:04,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:48:04,494 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [24960710] [2021-10-28 23:48:04,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:48:04,494 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:48:04,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:48:04,495 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:48:04,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-28 23:48:04,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:48:04,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 23:48:04,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:48:04,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:48:04,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:48:05,448 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-10-28 23:48:05,836 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-28 23:48:05,837 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 20 [2021-10-28 23:48:06,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:48:06,267 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:48:06,267 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [24960710] [2021-10-28 23:48:06,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [24960710] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:48:06,268 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:48:06,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-28 23:48:06,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159768263] [2021-10-28 23:48:06,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-28 23:48:06,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:48:06,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 23:48:06,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-28 23:48:06,271 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand has 14 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 10 states have internal predecessors, (20), 5 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 23:48:07,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:48:07,071 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2021-10-28 23:48:07,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 23:48:07,072 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 10 states have internal predecessors, (20), 5 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 17 [2021-10-28 23:48:07,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:48:07,073 INFO L225 Difference]: With dead ends: 42 [2021-10-28 23:48:07,074 INFO L226 Difference]: Without dead ends: 42 [2021-10-28 23:48:07,074 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2021-10-28 23:48:07,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-10-28 23:48:07,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-10-28 23:48:07,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 34 states have internal predecessors, (35), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 23:48:07,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2021-10-28 23:48:07,080 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 17 [2021-10-28 23:48:07,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:48:07,081 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2021-10-28 23:48:07,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 10 states have internal predecessors, (20), 5 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 23:48:07,081 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2021-10-28 23:48:07,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-28 23:48:07,082 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:48:07,083 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:48:07,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-28 23:48:07,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:48:07,284 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting free_dataErr4ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-10-28 23:48:07,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:48:07,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1648280676, now seen corresponding path program 1 times [2021-10-28 23:48:07,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:48:07,285 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [380609468] [2021-10-28 23:48:07,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:48:07,286 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:48:07,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:48:07,287 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:48:07,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-28 23:48:07,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:48:07,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-28 23:48:07,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:48:07,618 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-28 23:48:07,767 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-10-28 23:48:07,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:48:07,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:48:08,047 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 32 [2021-10-28 23:48:08,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:48:08,143 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:48:08,143 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [380609468] [2021-10-28 23:48:08,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [380609468] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:48:08,144 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:48:08,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 10 [2021-10-28 23:48:08,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715076790] [2021-10-28 23:48:08,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 23:48:08,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:48:08,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 23:48:08,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-10-28 23:48:08,146 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand has 11 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 23:48:08,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:48:08,960 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2021-10-28 23:48:08,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 23:48:08,961 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2021-10-28 23:48:08,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:48:08,964 INFO L225 Difference]: With dead ends: 43 [2021-10-28 23:48:08,964 INFO L226 Difference]: Without dead ends: 43 [2021-10-28 23:48:08,964 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2021-10-28 23:48:08,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-10-28 23:48:08,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2021-10-28 23:48:08,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 32 states have internal predecessors, (33), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 23:48:08,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2021-10-28 23:48:08,971 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 22 [2021-10-28 23:48:08,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:48:08,972 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2021-10-28 23:48:08,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 23:48:08,972 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2021-10-28 23:48:08,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-28 23:48:08,973 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:48:08,974 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:48:08,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-28 23:48:09,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:48:09,188 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting free_dataErr5ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-10-28 23:48:09,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:48:09,189 INFO L85 PathProgramCache]: Analyzing trace with hash 442906694, now seen corresponding path program 1 times [2021-10-28 23:48:09,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:48:09,189 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [55752063] [2021-10-28 23:48:09,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:48:09,189 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:48:09,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:48:09,196 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:48:09,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-28 23:48:09,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:48:09,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-28 23:48:09,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:48:09,734 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-28 23:48:10,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-10-28 23:48:10,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:48:10,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:48:11,521 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 32 [2021-10-28 23:48:11,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:48:11,777 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:48:11,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [55752063] [2021-10-28 23:48:11,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [55752063] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:48:11,778 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:48:11,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 10] imperfect sequences [] total 20 [2021-10-28 23:48:11,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583359094] [2021-10-28 23:48:11,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-28 23:48:11,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:48:11,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-28 23:48:11,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2021-10-28 23:48:11,780 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand has 21 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 17 states have internal predecessors, (34), 4 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-28 23:48:14,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:48:14,086 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2021-10-28 23:48:14,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 23:48:14,088 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 17 states have internal predecessors, (34), 4 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 23 [2021-10-28 23:48:14,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:48:14,089 INFO L225 Difference]: With dead ends: 41 [2021-10-28 23:48:14,089 INFO L226 Difference]: Without dead ends: 41 [2021-10-28 23:48:14,090 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=125, Invalid=577, Unknown=0, NotChecked=0, Total=702 [2021-10-28 23:48:14,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-10-28 23:48:14,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2021-10-28 23:48:14,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 30 states have internal predecessors, (31), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 23:48:14,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2021-10-28 23:48:14,095 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 23 [2021-10-28 23:48:14,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:48:14,096 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2021-10-28 23:48:14,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 17 states have internal predecessors, (34), 4 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-28 23:48:14,097 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2021-10-28 23:48:14,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-28 23:48:14,099 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:48:14,099 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:48:14,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-28 23:48:14,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:48:14,310 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting free_dataErr6ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-10-28 23:48:14,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:48:14,311 INFO L85 PathProgramCache]: Analyzing trace with hash 845205726, now seen corresponding path program 1 times [2021-10-28 23:48:14,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:48:14,311 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [545120917] [2021-10-28 23:48:14,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:48:14,311 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:48:14,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:48:14,313 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:48:14,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-28 23:48:14,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:48:14,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-28 23:48:14,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:48:14,618 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 23:48:14,666 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-10-28 23:48:14,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 20 [2021-10-28 23:48:15,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:48:15,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:48:15,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 46 [2021-10-28 23:48:15,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:48:15,621 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:48:15,621 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [545120917] [2021-10-28 23:48:15,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [545120917] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:48:15,621 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:48:15,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 11 [2021-10-28 23:48:15,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424411039] [2021-10-28 23:48:15,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 23:48:15,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:48:15,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 23:48:15,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-10-28 23:48:15,623 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand has 12 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 23:48:16,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:48:16,692 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2021-10-28 23:48:16,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-28 23:48:16,694 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2021-10-28 23:48:16,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:48:16,695 INFO L225 Difference]: With dead ends: 40 [2021-10-28 23:48:16,695 INFO L226 Difference]: Without dead ends: 40 [2021-10-28 23:48:16,696 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 28 SyntacticMatches, 9 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2021-10-28 23:48:16,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-10-28 23:48:16,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2021-10-28 23:48:16,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 29 states have internal predecessors, (30), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 23:48:16,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2021-10-28 23:48:16,699 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 24 [2021-10-28 23:48:16,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:48:16,699 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2021-10-28 23:48:16,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 23:48:16,700 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2021-10-28 23:48:16,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-28 23:48:16,703 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:48:16,703 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:48:16,725 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-28 23:48:16,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:48:16,913 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting free_dataErr9ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-10-28 23:48:16,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:48:16,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1869371830, now seen corresponding path program 1 times [2021-10-28 23:48:16,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:48:16,914 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [957922730] [2021-10-28 23:48:16,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:48:16,915 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:48:16,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:48:16,915 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:48:16,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-28 23:48:17,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:48:17,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-28 23:48:17,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:48:17,259 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 23:48:17,306 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2021-10-28 23:48:17,373 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-10-28 23:48:17,374 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2021-10-28 23:48:17,453 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-10-28 23:48:17,453 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 21 [2021-10-28 23:48:17,785 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-10-28 23:48:17,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 11 [2021-10-28 23:48:17,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:48:17,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:48:18,598 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-10-28 23:48:18,599 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 447 treesize of output 407 [2021-10-28 23:48:18,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:48:18,995 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:48:18,995 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [957922730] [2021-10-28 23:48:18,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [957922730] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:48:18,995 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:48:18,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 18 [2021-10-28 23:48:18,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029289513] [2021-10-28 23:48:18,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-28 23:48:18,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:48:18,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-28 23:48:18,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2021-10-28 23:48:18,999 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand has 18 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 16 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 23:48:20,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:48:20,427 INFO L93 Difference]: Finished difference Result 28 states and 27 transitions. [2021-10-28 23:48:20,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-28 23:48:20,428 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 16 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 27 [2021-10-28 23:48:20,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:48:20,430 INFO L225 Difference]: With dead ends: 28 [2021-10-28 23:48:20,430 INFO L226 Difference]: Without dead ends: 28 [2021-10-28 23:48:20,431 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=107, Invalid=649, Unknown=0, NotChecked=0, Total=756 [2021-10-28 23:48:20,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-28 23:48:20,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-10-28 23:48:20,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 20 states have (on average 1.0) internal successors, (20), 20 states have internal predecessors, (20), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 23:48:20,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 27 transitions. [2021-10-28 23:48:20,435 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 27 transitions. Word has length 27 [2021-10-28 23:48:20,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:48:20,435 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 27 transitions. [2021-10-28 23:48:20,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 16 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 23:48:20,436 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 27 transitions. [2021-10-28 23:48:20,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-28 23:48:20,437 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:48:20,437 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:48:20,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-28 23:48:20,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:48:20,649 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-10-28 23:48:20,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:48:20,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1914061661, now seen corresponding path program 1 times [2021-10-28 23:48:20,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:48:20,650 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1267371425] [2021-10-28 23:48:20,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:48:20,650 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:48:20,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:48:20,651 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:48:20,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-28 23:48:21,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:48:21,045 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:48:21,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:48:21,195 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-28 23:48:21,195 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 23:48:21,196 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK [2021-10-28 23:48:21,198 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_dataErr0REQUIRES_VIOLATION [2021-10-28 23:48:21,199 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_dataErr1REQUIRES_VIOLATION [2021-10-28 23:48:21,199 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_dataErr2REQUIRES_VIOLATION [2021-10-28 23:48:21,199 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_dataErr3REQUIRES_VIOLATION [2021-10-28 23:48:21,200 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr0REQUIRES_VIOLATION [2021-10-28 23:48:21,200 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr1REQUIRES_VIOLATION [2021-10-28 23:48:21,200 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr2REQUIRES_VIOLATION [2021-10-28 23:48:21,200 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr3REQUIRES_VIOLATION [2021-10-28 23:48:21,201 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr4ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:48:21,201 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr5ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:48:21,201 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr6ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:48:21,201 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr7ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:48:21,202 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr8ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:48:21,202 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr9ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:48:21,202 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr10REQUIRES_VIOLATION [2021-10-28 23:48:21,202 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr11REQUIRES_VIOLATION [2021-10-28 23:48:21,203 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr12REQUIRES_VIOLATION [2021-10-28 23:48:21,203 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr13REQUIRES_VIOLATION [2021-10-28 23:48:21,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-28 23:48:21,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:48:21,416 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:48:21,419 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:48:21,439 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-10-28 23:48:21,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:48:21 BoogieIcfgContainer [2021-10-28 23:48:21,484 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:48:21,485 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:48:21,485 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:48:21,485 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:48:21,486 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:47:52" (3/4) ... [2021-10-28 23:48:21,492 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 23:48:21,493 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:48:21,494 INFO L168 Benchmark]: Toolchain (without parser) took 30393.37 ms. Allocated memory was 65.0 MB in the beginning and 94.4 MB in the end (delta: 29.4 MB). Free memory was 44.0 MB in the beginning and 64.0 MB in the end (delta: -20.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 16.1 GB. [2021-10-28 23:48:21,495 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 65.0 MB. Free memory is still 45.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:48:21,495 INFO L168 Benchmark]: CACSL2BoogieTranslator took 751.79 ms. Allocated memory is still 65.0 MB. Free memory was 43.8 MB in the beginning and 41.6 MB in the end (delta: 2.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:48:21,496 INFO L168 Benchmark]: Boogie Preprocessor took 74.34 ms. Allocated memory is still 65.0 MB. Free memory was 41.6 MB in the beginning and 38.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:48:21,496 INFO L168 Benchmark]: RCFGBuilder took 919.04 ms. Allocated memory was 65.0 MB in the beginning and 94.4 MB in the end (delta: 29.4 MB). Free memory was 38.9 MB in the beginning and 69.0 MB in the end (delta: -30.1 MB). Peak memory consumption was 19.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:48:21,499 INFO L168 Benchmark]: TraceAbstraction took 28629.63 ms. Allocated memory is still 94.4 MB. Free memory was 68.5 MB in the beginning and 64.9 MB in the end (delta: 3.5 MB). Peak memory consumption was 4.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:48:21,500 INFO L168 Benchmark]: Witness Printer took 7.95 ms. Allocated memory is still 94.4 MB. Free memory was 64.9 MB in the beginning and 64.0 MB in the end (delta: 885.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:48:21,502 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 65.0 MB. Free memory is still 45.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 751.79 ms. Allocated memory is still 65.0 MB. Free memory was 43.8 MB in the beginning and 41.6 MB in the end (delta: 2.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 74.34 ms. Allocated memory is still 65.0 MB. Free memory was 41.6 MB in the beginning and 38.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 919.04 ms. Allocated memory was 65.0 MB in the beginning and 94.4 MB in the end (delta: 29.4 MB). Free memory was 38.9 MB in the beginning and 69.0 MB in the end (delta: -30.1 MB). Peak memory consumption was 19.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 28629.63 ms. Allocated memory is still 94.4 MB. Free memory was 68.5 MB in the beginning and 64.9 MB in the end (delta: 3.5 MB). Peak memory consumption was 4.1 MB. Max. memory is 16.1 GB. * Witness Printer took 7.95 ms. Allocated memory is still 94.4 MB. Free memory was 64.9 MB in the beginning and 64.0 MB in the end (delta: 885.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * 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 - UnprovableResult [Line: 543]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 543. Possible FailurePath: [L544] TData data; VAL [data={31:0}] [L545] CALL alloc_data(&data) VAL [pdata={31:0}] [L529] pdata->lo = malloc(16) VAL [malloc(16)={1:0}, pdata={31:0}, pdata={31:0}] [L530] pdata->hi = malloc(24) VAL [malloc(24)={3:0}, pdata={31:0}, pdata={31:0}] [L545] RET alloc_data(&data) VAL [data={31:0}] [L546] CALL free_data(&data) VAL [data={31:0}] [L534] EXPR data->lo VAL [data={31:0}, data={31:0}, data->lo={1:0}] [L534] void *lo = data->lo; [L535] EXPR data->hi VAL [data={31:0}, data={31:0}, data->hi={3:0}, lo={1:0}] [L535] void *hi = data->hi; [L536] COND FALSE !(lo == hi) VAL [data={31:0}, data={31:0}, hi={3:0}, lo={1:0}] [L540] data->lo = (void *) 0 VAL [data={31:0}, data={31:0}, hi={3:0}, lo={1:0}] [L541] data->hi = (void *) 0 VAL [data={31:0}, data={31:0}, hi={3:0}, lo={1:0}] [L546] RET free_data(&data) VAL [data={31:0}] [L547] return 0; [L547] return 0; VAL [\result=0] - UnprovableResult [Line: 529]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 529]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 530]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 530]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 535]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 535]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 537]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 537]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 537]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 79 locations, 19 error locations. Started 1 CEGAR loops. OverallTime: 28.4s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 9.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 262 SDtfs, 331 SDslu, 1029 SDs, 0 SdLazy, 1375 SolverSat, 88 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 348 GetRequests, 204 SyntacticMatches, 15 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 10.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred in iteration=0, InterpolantAutomatonStates: 91, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 15 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 14.2s InterpolantComputationTime, 186 NumberOfCodeBlocks, 186 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 300 ConstructedInterpolants, 28 QuantifiedInterpolants, 2434 SizeOfPredicates, 82 NumberOfNonLiveVariables, 999 ConjunctsInSsa, 129 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 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 could not prove your program: unable to determine feasibility of some traces [2021-10-28 23:48:21,580 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3348528e-07a0-49d6-835c-0b7762519c03/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...