./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 e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0019-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be --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_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0019-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be --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-e943c26 [2021-10-21 19:12:24,515 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:12:24,517 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:12:24,548 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:12:24,548 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:12:24,550 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:12:24,551 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:12:24,554 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:12:24,556 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:12:24,557 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:12:24,559 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:12:24,560 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:12:24,561 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:12:24,562 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:12:24,564 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:12:24,566 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:12:24,567 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:12:24,569 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:12:24,575 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:12:24,577 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:12:24,585 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:12:24,586 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:12:24,588 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:12:24,589 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:12:24,596 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:12:24,597 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:12:24,597 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:12:24,602 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:12:24,606 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:12:24,607 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:12:24,608 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:12:24,609 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:12:24,611 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:12:24,613 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:12:24,614 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:12:24,615 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:12:24,616 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:12:24,616 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:12:24,617 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:12:24,618 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:12:24,619 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:12:24,620 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-21 19:12:24,648 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:12:24,648 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:12:24,649 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:12:24,649 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:12:24,650 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:12:24,651 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:12:24,651 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:12:24,651 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:12:24,651 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:12:24,652 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 19:12:24,652 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:12:24,652 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:12:24,652 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:12:24,652 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-21 19:12:24,653 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-21 19:12:24,653 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-21 19:12:24,653 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:12:24,653 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-21 19:12:24,654 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:12:24,654 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:12:24,654 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:12:24,654 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:12:24,655 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:12:24,655 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:12:24,655 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:12:24,655 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:12:24,656 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:12:24,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 19:12:24,656 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:12:24,656 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_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 40afad058466dec508429aba14a695fa830becbd8e90e3307f02f796ff077dad [2021-10-21 19:12:24,924 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:12:24,961 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:12:24,964 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:12:24,966 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:12:24,968 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:12:24,969 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/memsafety/test-0019-2.i [2021-10-21 19:12:25,054 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be/data/28b9930cc/a490666cd7f54275abf3fe148508dd7c/FLAG5f3309ce2 [2021-10-21 19:12:25,562 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:12:25,563 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/sv-benchmarks/c/memsafety/test-0019-2.i [2021-10-21 19:12:25,579 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be/data/28b9930cc/a490666cd7f54275abf3fe148508dd7c/FLAG5f3309ce2 [2021-10-21 19:12:25,890 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be/data/28b9930cc/a490666cd7f54275abf3fe148508dd7c [2021-10-21 19:12:25,898 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:12:25,900 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-21 19:12:25,904 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:12:25,904 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:12:25,908 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:12:25,908 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:12:25" (1/1) ... [2021-10-21 19:12:25,911 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4de0d172 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:12:25, skipping insertion in model container [2021-10-21 19:12:25,911 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:12:25" (1/1) ... [2021-10-21 19:12:25,919 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:12:25,962 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:12:26,336 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:12:26,357 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:12:26,410 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:12:26,442 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:12:26,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:12:26 WrapperNode [2021-10-21 19:12:26,443 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:12:26,444 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:12:26,444 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:12:26,445 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:12:26,457 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:12:26" (1/1) ... [2021-10-21 19:12:26,458 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:12:26" (1/1) ... [2021-10-21 19:12:26,486 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:12:26" (1/1) ... [2021-10-21 19:12:26,487 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:12:26" (1/1) ... [2021-10-21 19:12:26,504 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:12:26" (1/1) ... [2021-10-21 19:12:26,506 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:12:26" (1/1) ... [2021-10-21 19:12:26,510 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:12:26" (1/1) ... [2021-10-21 19:12:26,516 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:12:26,517 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:12:26,518 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:12:26,518 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:12:26,519 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:12:26" (1/1) ... [2021-10-21 19:12:26,532 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:12:26,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:12:26,558 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:12:26,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:12:26,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-21 19:12:26,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:12:26,609 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-21 19:12:26,609 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-21 19:12:26,609 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-21 19:12:26,609 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-21 19:12:26,609 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-21 19:12:26,614 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-21 19:12:26,614 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_data [2021-10-21 19:12:26,615 INFO L138 BoogieDeclarations]: Found implementation of procedure free_data [2021-10-21 19:12:26,615 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-21 19:12:26,616 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-21 19:12:26,616 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-21 19:12:26,616 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-21 19:12:26,616 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-21 19:12:26,617 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-21 19:12:26,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:12:26,617 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-21 19:12:26,618 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-21 19:12:26,618 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-21 19:12:26,618 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-21 19:12:26,622 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-21 19:12:26,623 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-21 19:12:26,623 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-21 19:12:26,623 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-21 19:12:26,623 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-21 19:12:26,623 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-21 19:12:26,623 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-21 19:12:26,623 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-21 19:12:26,624 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-21 19:12:26,624 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-21 19:12:26,624 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-21 19:12:26,624 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-21 19:12:26,624 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-21 19:12:26,624 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-21 19:12:26,624 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-21 19:12:26,625 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-21 19:12:26,625 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-21 19:12:26,625 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-21 19:12:26,625 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-21 19:12:26,625 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-21 19:12:26,625 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-21 19:12:26,625 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-21 19:12:26,626 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-21 19:12:26,626 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-21 19:12:26,626 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-21 19:12:26,626 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-21 19:12:26,627 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-21 19:12:26,627 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-21 19:12:26,627 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-21 19:12:26,627 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-21 19:12:26,628 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-21 19:12:26,628 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-21 19:12:26,628 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-21 19:12:26,628 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-21 19:12:26,629 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-21 19:12:26,629 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-21 19:12:26,629 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-21 19:12:26,629 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-21 19:12:26,630 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-21 19:12:26,630 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-21 19:12:26,630 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-21 19:12:26,630 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-21 19:12:26,630 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-21 19:12:26,631 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-21 19:12:26,631 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-21 19:12:26,631 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-21 19:12:26,631 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-21 19:12:26,632 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-21 19:12:26,632 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-21 19:12:26,633 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-21 19:12:26,633 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-21 19:12:26,633 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-21 19:12:26,633 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-21 19:12:26,633 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-21 19:12:26,633 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-21 19:12:26,633 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-21 19:12:26,633 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-21 19:12:26,634 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-21 19:12:26,634 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-21 19:12:26,634 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-21 19:12:26,634 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-21 19:12:26,634 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-21 19:12:26,634 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-21 19:12:26,634 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-21 19:12:26,634 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-21 19:12:26,635 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-21 19:12:26,635 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-21 19:12:26,635 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-21 19:12:26,635 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-21 19:12:26,635 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-21 19:12:26,635 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-21 19:12:26,635 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-21 19:12:26,635 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-21 19:12:26,636 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-21 19:12:26,636 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-21 19:12:26,636 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-21 19:12:26,636 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-21 19:12:26,636 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-21 19:12:26,636 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-21 19:12:26,636 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-21 19:12:26,636 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-21 19:12:26,637 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-21 19:12:26,637 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-21 19:12:26,637 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-21 19:12:26,637 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-21 19:12:26,637 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-21 19:12:26,637 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-21 19:12:26,637 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-21 19:12:26,637 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-21 19:12:26,637 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-21 19:12:26,638 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-21 19:12:26,638 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-21 19:12:26,638 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-21 19:12:26,638 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-21 19:12:26,638 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-21 19:12:26,638 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-21 19:12:26,638 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-21 19:12:26,639 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-21 19:12:26,639 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-21 19:12:26,639 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-21 19:12:26,639 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-21 19:12:26,639 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-21 19:12:26,639 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_data [2021-10-21 19:12:26,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-21 19:12:26,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-21 19:12:26,640 INFO L130 BoogieDeclarations]: Found specification of procedure free_data [2021-10-21 19:12:26,640 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-21 19:12:26,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-21 19:12:26,640 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-21 19:12:26,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-21 19:12:26,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 19:12:26,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:12:26,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-21 19:12:26,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-21 19:12:27,120 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:12:27,123 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-10-21 19:12:27,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:12:27 BoogieIcfgContainer [2021-10-21 19:12:27,128 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:12:27,131 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:12:27,133 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:12:27,137 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:12:27,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:12:25" (1/3) ... [2021-10-21 19:12:27,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c9f20b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:12:27, skipping insertion in model container [2021-10-21 19:12:27,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:12:26" (2/3) ... [2021-10-21 19:12:27,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c9f20b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:12:27, skipping insertion in model container [2021-10-21 19:12:27,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:12:27" (3/3) ... [2021-10-21 19:12:27,141 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0019-2.i [2021-10-21 19:12:27,153 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:12:27,153 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2021-10-21 19:12:27,208 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:12:27,215 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 [2021-10-21 19:12:27,215 INFO L340 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2021-10-21 19:12:27,230 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) [2021-10-21 19:12:27,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-21 19:12:27,237 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:12:27,238 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:12:27,238 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting alloc_dataErr0REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-10-21 19:12:27,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:12:27,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1420223000, now seen corresponding path program 1 times [2021-10-21 19:12:27,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:12:27,257 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277377383] [2021-10-21 19:12:27,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:12:27,259 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:12:27,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:12:27,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 19:12:27,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:12:27,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:12:27,657 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:12:27,657 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277377383] [2021-10-21 19:12:27,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277377383] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:12:27,658 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:12:27,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 19:12:27,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588341285] [2021-10-21 19:12:27,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:12:27,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:12:27,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:12:27,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:12:27,695 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) [2021-10-21 19:12:27,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:12:27,991 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2021-10-21 19:12:27,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 19:12:27,993 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 [2021-10-21 19:12:27,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:12:28,002 INFO L225 Difference]: With dead ends: 62 [2021-10-21 19:12:28,002 INFO L226 Difference]: Without dead ends: 59 [2021-10-21 19:12:28,005 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 83.6ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:12:28,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-10-21 19:12:28,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 50. [2021-10-21 19:12:28,043 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) [2021-10-21 19:12:28,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2021-10-21 19:12:28,046 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 9 [2021-10-21 19:12:28,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:12:28,047 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2021-10-21 19:12:28,047 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) [2021-10-21 19:12:28,047 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2021-10-21 19:12:28,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-21 19:12:28,048 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:12:28,048 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:12:28,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 19:12:28,049 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting alloc_dataErr1REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-10-21 19:12:28,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:12:28,052 INFO L82 PathProgramCache]: Analyzing trace with hash -1420222999, now seen corresponding path program 1 times [2021-10-21 19:12:28,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:12:28,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886916682] [2021-10-21 19:12:28,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:12:28,053 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:12:28,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:12:28,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 19:12:28,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:12:28,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:12:28,267 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:12:28,268 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886916682] [2021-10-21 19:12:28,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886916682] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:12:28,269 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:12:28,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 19:12:28,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973570301] [2021-10-21 19:12:28,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:12:28,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:12:28,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:12:28,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:12:28,276 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) [2021-10-21 19:12:28,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:12:28,515 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2021-10-21 19:12:28,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 19:12:28,515 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 [2021-10-21 19:12:28,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:12:28,517 INFO L225 Difference]: With dead ends: 58 [2021-10-21 19:12:28,518 INFO L226 Difference]: Without dead ends: 58 [2021-10-21 19:12:28,519 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 83.6ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:12:28,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-10-21 19:12:28,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 49. [2021-10-21 19:12:28,531 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) [2021-10-21 19:12:28,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2021-10-21 19:12:28,534 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 9 [2021-10-21 19:12:28,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:12:28,534 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2021-10-21 19:12:28,535 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) [2021-10-21 19:12:28,535 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2021-10-21 19:12:28,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-21 19:12:28,536 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:12:28,536 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:12:28,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 19:12:28,537 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting alloc_dataErr3REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-10-21 19:12:28,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:12:28,538 INFO L82 PathProgramCache]: Analyzing trace with hash 965296970, now seen corresponding path program 1 times [2021-10-21 19:12:28,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:12:28,538 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636804880] [2021-10-21 19:12:28,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:12:28,539 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:12:28,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:12:28,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 19:12:28,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:12:28,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:12:28,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:12:28,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636804880] [2021-10-21 19:12:28,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636804880] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:12:28,779 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:12:28,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-21 19:12:28,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697073332] [2021-10-21 19:12:28,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:12:28,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:12:28,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:12:28,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:12:28,788 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) [2021-10-21 19:12:29,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:12:29,007 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2021-10-21 19:12:29,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 19:12:29,014 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 [2021-10-21 19:12:29,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:12:29,017 INFO L225 Difference]: With dead ends: 57 [2021-10-21 19:12:29,017 INFO L226 Difference]: Without dead ends: 57 [2021-10-21 19:12:29,018 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 95.3ms TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:12:29,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-10-21 19:12:29,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 48. [2021-10-21 19:12:29,028 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) [2021-10-21 19:12:29,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2021-10-21 19:12:29,031 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 11 [2021-10-21 19:12:29,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:12:29,032 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2021-10-21 19:12:29,032 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) [2021-10-21 19:12:29,032 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2021-10-21 19:12:29,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-21 19:12:29,033 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:12:29,033 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:12:29,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-21 19:12:29,035 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting free_dataErr0REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-10-21 19:12:29,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:12:29,036 INFO L82 PathProgramCache]: Analyzing trace with hash -2075049684, now seen corresponding path program 1 times [2021-10-21 19:12:29,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:12:29,036 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956493611] [2021-10-21 19:12:29,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:12:29,037 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:12:29,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:12:29,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 19:12:29,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:12:29,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-21 19:12:29,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:12:29,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:12:29,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:12:29,224 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956493611] [2021-10-21 19:12:29,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956493611] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:12:29,225 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:12:29,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-21 19:12:29,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634191843] [2021-10-21 19:12:29,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-21 19:12:29,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:12:29,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-21 19:12:29,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:12:29,231 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) [2021-10-21 19:12:29,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:12:29,548 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2021-10-21 19:12:29,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 19:12:29,549 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 [2021-10-21 19:12:29,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:12:29,550 INFO L225 Difference]: With dead ends: 52 [2021-10-21 19:12:29,550 INFO L226 Difference]: Without dead ends: 52 [2021-10-21 19:12:29,551 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 198.3ms TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-10-21 19:12:29,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-21 19:12:29,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2021-10-21 19:12:29,554 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) [2021-10-21 19:12:29,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2021-10-21 19:12:29,558 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 17 [2021-10-21 19:12:29,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:12:29,559 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2021-10-21 19:12:29,559 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) [2021-10-21 19:12:29,559 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2021-10-21 19:12:29,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-21 19:12:29,560 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:12:29,560 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:12:29,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-21 19:12:29,562 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting free_dataErr1REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-10-21 19:12:29,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:12:29,562 INFO L82 PathProgramCache]: Analyzing trace with hash -2075049683, now seen corresponding path program 1 times [2021-10-21 19:12:29,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:12:29,563 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223775830] [2021-10-21 19:12:29,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:12:29,564 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:12:29,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:12:29,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 19:12:29,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:12:29,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-21 19:12:29,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:12:29,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:12:29,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:12:29,737 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223775830] [2021-10-21 19:12:29,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223775830] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:12:29,737 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:12:29,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-21 19:12:29,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720324165] [2021-10-21 19:12:29,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-21 19:12:29,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:12:29,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-21 19:12:29,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-10-21 19:12:29,739 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) [2021-10-21 19:12:30,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:12:30,096 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2021-10-21 19:12:30,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-21 19:12:30,098 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 [2021-10-21 19:12:30,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:12:30,103 INFO L225 Difference]: With dead ends: 45 [2021-10-21 19:12:30,104 INFO L226 Difference]: Without dead ends: 45 [2021-10-21 19:12:30,104 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 250.7ms TimeCoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2021-10-21 19:12:30,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-10-21 19:12:30,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 42. [2021-10-21 19:12:30,119 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) [2021-10-21 19:12:30,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2021-10-21 19:12:30,122 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 17 [2021-10-21 19:12:30,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:12:30,123 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2021-10-21 19:12:30,123 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) [2021-10-21 19:12:30,123 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2021-10-21 19:12:30,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-21 19:12:30,125 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:12:30,125 INFO L512 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] [2021-10-21 19:12:30,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-21 19:12:30,126 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)] === [2021-10-21 19:12:30,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:12:30,128 INFO L82 PathProgramCache]: Analyzing trace with hash -1129452196, now seen corresponding path program 1 times [2021-10-21 19:12:30,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:12:30,129 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193887723] [2021-10-21 19:12:30,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:12:30,129 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:12:30,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:12:30,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 19:12:30,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:12:30,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-21 19:12:30,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:12:30,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:12:30,337 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:12:30,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193887723] [2021-10-21 19:12:30,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193887723] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:12:30,337 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:12:30,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-21 19:12:30,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60314960] [2021-10-21 19:12:30,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-21 19:12:30,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:12:30,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-21 19:12:30,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2021-10-21 19:12:30,339 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) [2021-10-21 19:12:30,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:12:30,715 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2021-10-21 19:12:30,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-21 19:12:30,716 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 [2021-10-21 19:12:30,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:12:30,717 INFO L225 Difference]: With dead ends: 44 [2021-10-21 19:12:30,717 INFO L226 Difference]: Without dead ends: 44 [2021-10-21 19:12:30,718 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 286.3ms TimeCoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2021-10-21 19:12:30,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-10-21 19:12:30,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2021-10-21 19:12:30,721 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) [2021-10-21 19:12:30,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2021-10-21 19:12:30,722 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 22 [2021-10-21 19:12:30,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:12:30,722 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2021-10-21 19:12:30,722 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) [2021-10-21 19:12:30,722 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2021-10-21 19:12:30,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-21 19:12:30,723 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:12:30,723 INFO L512 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] [2021-10-21 19:12:30,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-21 19:12:30,723 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)] === [2021-10-21 19:12:30,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:12:30,724 INFO L82 PathProgramCache]: Analyzing trace with hash -653279632, now seen corresponding path program 1 times [2021-10-21 19:12:30,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:12:30,724 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950151890] [2021-10-21 19:12:30,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:12:30,724 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:12:30,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:12:30,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 19:12:30,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:12:30,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-21 19:12:30,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:12:30,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:12:30,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:12:30,915 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950151890] [2021-10-21 19:12:30,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950151890] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:12:30,915 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:12:30,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-21 19:12:30,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657794031] [2021-10-21 19:12:30,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-21 19:12:30,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:12:30,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-21 19:12:30,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2021-10-21 19:12:30,918 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) [2021-10-21 19:12:31,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:12:31,337 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2021-10-21 19:12:31,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-21 19:12:31,337 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 [2021-10-21 19:12:31,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:12:31,338 INFO L225 Difference]: With dead ends: 43 [2021-10-21 19:12:31,338 INFO L226 Difference]: Without dead ends: 43 [2021-10-21 19:12:31,339 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 308.4ms TimeCoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2021-10-21 19:12:31,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-10-21 19:12:31,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2021-10-21 19:12:31,342 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) [2021-10-21 19:12:31,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2021-10-21 19:12:31,343 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 23 [2021-10-21 19:12:31,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:12:31,343 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2021-10-21 19:12:31,343 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) [2021-10-21 19:12:31,343 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2021-10-21 19:12:31,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-21 19:12:31,344 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:12:31,344 INFO L512 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] [2021-10-21 19:12:31,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-21 19:12:31,345 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)] === [2021-10-21 19:12:31,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:12:31,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1223167966, now seen corresponding path program 1 times [2021-10-21 19:12:31,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:12:31,346 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235740002] [2021-10-21 19:12:31,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:12:31,347 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:12:31,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:12:31,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 19:12:31,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:12:31,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-21 19:12:31,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:12:31,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:12:31,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:12:31,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235740002] [2021-10-21 19:12:31,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235740002] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:12:31,533 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:12:31,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-21 19:12:31,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431420300] [2021-10-21 19:12:31,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-21 19:12:31,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:12:31,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-21 19:12:31,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2021-10-21 19:12:31,536 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) [2021-10-21 19:12:31,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:12:31,868 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2021-10-21 19:12:31,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-21 19:12:31,869 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 [2021-10-21 19:12:31,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:12:31,869 INFO L225 Difference]: With dead ends: 42 [2021-10-21 19:12:31,869 INFO L226 Difference]: Without dead ends: 42 [2021-10-21 19:12:31,870 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 268.2ms TimeCoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2021-10-21 19:12:31,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-10-21 19:12:31,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2021-10-21 19:12:31,872 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) [2021-10-21 19:12:31,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2021-10-21 19:12:31,873 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 24 [2021-10-21 19:12:31,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:12:31,874 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2021-10-21 19:12:31,874 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) [2021-10-21 19:12:31,874 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2021-10-21 19:12:31,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-21 19:12:31,875 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:12:31,875 INFO L512 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] [2021-10-21 19:12:31,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-21 19:12:31,876 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)] === [2021-10-21 19:12:31,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:12:31,876 INFO L82 PathProgramCache]: Analyzing trace with hash -736498638, now seen corresponding path program 1 times [2021-10-21 19:12:31,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:12:31,877 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556559837] [2021-10-21 19:12:31,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:12:31,877 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:12:31,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:12:31,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 19:12:31,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:12:31,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-21 19:12:31,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:12:31,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:12:31,938 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:12:31,938 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556559837] [2021-10-21 19:12:31,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556559837] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:12:31,938 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:12:31,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 19:12:31,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806455378] [2021-10-21 19:12:31,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:12:31,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:12:31,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:12:31,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:12:31,940 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) [2021-10-21 19:12:32,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:12:32,089 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2021-10-21 19:12:32,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 19:12:32,089 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 [2021-10-21 19:12:32,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:12:32,090 INFO L225 Difference]: With dead ends: 41 [2021-10-21 19:12:32,090 INFO L226 Difference]: Without dead ends: 41 [2021-10-21 19:12:32,091 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 102.3ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-10-21 19:12:32,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-10-21 19:12:32,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2021-10-21 19:12:32,093 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) [2021-10-21 19:12:32,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2021-10-21 19:12:32,094 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 25 [2021-10-21 19:12:32,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:12:32,095 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2021-10-21 19:12:32,095 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) [2021-10-21 19:12:32,095 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2021-10-21 19:12:32,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-21 19:12:32,096 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:12:32,096 INFO L512 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] [2021-10-21 19:12:32,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-21 19:12:32,097 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)] === [2021-10-21 19:12:32,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:12:32,097 INFO L82 PathProgramCache]: Analyzing trace with hash -1356621216, now seen corresponding path program 1 times [2021-10-21 19:12:32,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:12:32,097 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297243923] [2021-10-21 19:12:32,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:12:32,098 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:12:32,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:12:32,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 19:12:32,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:12:32,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-21 19:12:32,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:12:32,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:12:32,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:12:32,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297243923] [2021-10-21 19:12:32,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297243923] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:12:32,327 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:12:32,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-10-21 19:12:32,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303592195] [2021-10-21 19:12:32,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-21 19:12:32,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:12:32,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-21 19:12:32,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-10-21 19:12:32,329 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) [2021-10-21 19:12:32,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:12:32,758 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2021-10-21 19:12:32,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-21 19:12:32,758 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 [2021-10-21 19:12:32,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:12:32,759 INFO L225 Difference]: With dead ends: 40 [2021-10-21 19:12:32,759 INFO L226 Difference]: Without dead ends: 40 [2021-10-21 19:12:32,759 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 370.9ms TimeCoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2021-10-21 19:12:32,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-10-21 19:12:32,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2021-10-21 19:12:32,761 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) [2021-10-21 19:12:32,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2021-10-21 19:12:32,762 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 26 [2021-10-21 19:12:32,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:12:32,762 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2021-10-21 19:12:32,763 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) [2021-10-21 19:12:32,763 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2021-10-21 19:12:32,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-21 19:12:32,764 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:12:32,764 INFO L512 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] [2021-10-21 19:12:32,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-21 19:12:32,764 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-10-21 19:12:32,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:12:32,764 INFO L82 PathProgramCache]: Analyzing trace with hash 849725517, now seen corresponding path program 1 times [2021-10-21 19:12:32,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:12:32,765 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247388114] [2021-10-21 19:12:32,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:12:32,765 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:12:32,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:12:32,792 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:12:32,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:12:32,836 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:12:32,836 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-21 19:12:32,837 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK [2021-10-21 19:12:32,839 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_dataErr0REQUIRES_VIOLATION [2021-10-21 19:12:32,839 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_dataErr1REQUIRES_VIOLATION [2021-10-21 19:12:32,840 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_dataErr2REQUIRES_VIOLATION [2021-10-21 19:12:32,840 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_dataErr3REQUIRES_VIOLATION [2021-10-21 19:12:32,840 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr0REQUIRES_VIOLATION [2021-10-21 19:12:32,840 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr1REQUIRES_VIOLATION [2021-10-21 19:12:32,840 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr2REQUIRES_VIOLATION [2021-10-21 19:12:32,841 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr3REQUIRES_VIOLATION [2021-10-21 19:12:32,841 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr4ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:12:32,841 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr5ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:12:32,841 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr6ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:12:32,841 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr7ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:12:32,842 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr8ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:12:32,842 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr9ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:12:32,842 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr10REQUIRES_VIOLATION [2021-10-21 19:12:32,842 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr11REQUIRES_VIOLATION [2021-10-21 19:12:32,842 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr12REQUIRES_VIOLATION [2021-10-21 19:12:32,843 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr13REQUIRES_VIOLATION [2021-10-21 19:12:32,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-21 19:12:32,849 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 19:12:32,862 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-10-21 19:12:32,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 07:12:32 BoogieIcfgContainer [2021-10-21 19:12:32,875 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 19:12:32,876 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:12:32,876 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:12:32,876 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:12:32,877 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:12:27" (3/4) ... [2021-10-21 19:12:32,880 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-21 19:12:32,880 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:12:32,881 INFO L168 Benchmark]: Toolchain (without parser) took 6980.45 ms. Allocated memory was 83.9 MB in the beginning and 157.3 MB in the end (delta: 73.4 MB). Free memory was 49.0 MB in the beginning and 68.5 MB in the end (delta: -19.6 MB). Peak memory consumption was 54.6 MB. Max. memory is 16.1 GB. [2021-10-21 19:12:32,882 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 83.9 MB. Free memory was 56.7 MB in the beginning and 56.7 MB in the end (delta: 30.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:12:32,882 INFO L168 Benchmark]: CACSL2BoogieTranslator took 539.67 ms. Allocated memory was 83.9 MB in the beginning and 130.0 MB in the end (delta: 46.1 MB). Free memory was 48.8 MB in the beginning and 98.7 MB in the end (delta: -49.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:12:32,883 INFO L168 Benchmark]: Boogie Preprocessor took 72.52 ms. Allocated memory is still 130.0 MB. Free memory was 98.7 MB in the beginning and 96.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:12:32,883 INFO L168 Benchmark]: RCFGBuilder took 611.81 ms. Allocated memory is still 130.0 MB. Free memory was 96.1 MB in the beginning and 75.6 MB in the end (delta: 20.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-10-21 19:12:32,884 INFO L168 Benchmark]: TraceAbstraction took 5744.47 ms. Allocated memory was 130.0 MB in the beginning and 157.3 MB in the end (delta: 27.3 MB). Free memory was 75.1 MB in the beginning and 68.5 MB in the end (delta: 6.6 MB). Peak memory consumption was 36.3 MB. Max. memory is 16.1 GB. [2021-10-21 19:12:32,884 INFO L168 Benchmark]: Witness Printer took 4.21 ms. Allocated memory is still 157.3 MB. Free memory is still 68.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:12:32,886 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 83.9 MB. Free memory was 56.7 MB in the beginning and 56.7 MB in the end (delta: 30.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 539.67 ms. Allocated memory was 83.9 MB in the beginning and 130.0 MB in the end (delta: 46.1 MB). Free memory was 48.8 MB in the beginning and 98.7 MB in the end (delta: -49.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 72.52 ms. Allocated memory is still 130.0 MB. Free memory was 98.7 MB in the beginning and 96.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 611.81 ms. Allocated memory is still 130.0 MB. Free memory was 96.1 MB in the beginning and 75.6 MB in the end (delta: 20.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5744.47 ms. Allocated memory was 130.0 MB in the beginning and 157.3 MB in the end (delta: 27.3 MB). Free memory was 75.1 MB in the beginning and 68.5 MB in the end (delta: 6.6 MB). Peak memory consumption was 36.3 MB. Max. memory is 16.1 GB. * Witness Printer took 4.21 ms. Allocated memory is still 157.3 MB. Free memory is still 68.5 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, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms 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: 5640.8ms, OverallIterations: 11, TraceHistogramMax: 1, EmptinessCheckTime: 19.6ms, AutomataDifference: 3213.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 231 SDtfs, 553 SDslu, 591 SDs, 0 SdLazy, 1758 SolverSat, 163 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1288.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 165 GetRequests, 29 SyntacticMatches, 4 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 2048.0ms Time, 0.0ms 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, 0.0ms DumpTime, AutomataMinimizationStatistics: 94.6ms AutomataMinimizationTime, 10 MinimizatonAttempts, 51 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 54.0ms SsaConstructionTime, 243.6ms SatisfiabilityAnalysisTime, 1660.6ms 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 [2021-10-21 19:12:32,934 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be/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-e943c26 [2021-10-21 19:12:35,383 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:12:35,386 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:12:35,452 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:12:35,453 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:12:35,457 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:12:35,459 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:12:35,466 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:12:35,469 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:12:35,475 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:12:35,477 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:12:35,479 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:12:35,479 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:12:35,482 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:12:35,484 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:12:35,488 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:12:35,490 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:12:35,491 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:12:35,493 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:12:35,503 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:12:35,506 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:12:35,507 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:12:35,509 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:12:35,512 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:12:35,521 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:12:35,522 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:12:35,522 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:12:35,524 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:12:35,525 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:12:35,526 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:12:35,526 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:12:35,527 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:12:35,529 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:12:35,530 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:12:35,531 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:12:35,531 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:12:35,532 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:12:35,533 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:12:35,533 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:12:35,535 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:12:35,535 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:12:35,536 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-21 19:12:35,579 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:12:35,579 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:12:35,580 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:12:35,580 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:12:35,582 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:12:35,582 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:12:35,583 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:12:35,583 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:12:35,583 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:12:35,583 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 19:12:35,584 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:12:35,585 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:12:35,585 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:12:35,585 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-21 19:12:35,586 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-21 19:12:35,586 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-21 19:12:35,586 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:12:35,586 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-21 19:12:35,586 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-21 19:12:35,587 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-21 19:12:35,587 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:12:35,587 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:12:35,587 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:12:35,588 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:12:35,588 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:12:35,588 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:12:35,589 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:12:35,589 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:12:35,589 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-21 19:12:35,589 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-21 19:12:35,590 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:12:35,590 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-21 19:12:35,590 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_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 40afad058466dec508429aba14a695fa830becbd8e90e3307f02f796ff077dad [2021-10-21 19:12:35,978 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:12:36,006 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:12:36,009 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:12:36,010 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:12:36,011 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:12:36,012 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/memsafety/test-0019-2.i [2021-10-21 19:12:36,102 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be/data/b30083725/a67ca299981d490392e03ae929b24bbb/FLAG808e7d0ef [2021-10-21 19:12:36,692 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:12:36,692 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/sv-benchmarks/c/memsafety/test-0019-2.i [2021-10-21 19:12:36,712 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be/data/b30083725/a67ca299981d490392e03ae929b24bbb/FLAG808e7d0ef [2021-10-21 19:12:36,989 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be/data/b30083725/a67ca299981d490392e03ae929b24bbb [2021-10-21 19:12:36,993 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:12:36,996 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-21 19:12:37,000 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:12:37,000 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:12:37,004 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:12:37,005 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:12:36" (1/1) ... [2021-10-21 19:12:37,006 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b52cf40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:12:37, skipping insertion in model container [2021-10-21 19:12:37,007 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:12:36" (1/1) ... [2021-10-21 19:12:37,013 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:12:37,056 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:12:37,417 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:12:37,434 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:12:37,500 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:12:37,540 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:12:37,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:12:37 WrapperNode [2021-10-21 19:12:37,541 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:12:37,542 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:12:37,542 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:12:37,542 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:12:37,555 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:12:37" (1/1) ... [2021-10-21 19:12:37,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:12:37" (1/1) ... [2021-10-21 19:12:37,572 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:12:37" (1/1) ... [2021-10-21 19:12:37,573 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:12:37" (1/1) ... [2021-10-21 19:12:37,599 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:12:37" (1/1) ... [2021-10-21 19:12:37,607 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:12:37" (1/1) ... [2021-10-21 19:12:37,617 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:12:37" (1/1) ... [2021-10-21 19:12:37,637 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:12:37,642 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:12:37,642 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:12:37,642 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:12:37,646 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:12:37" (1/1) ... [2021-10-21 19:12:37,654 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:12:37,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:12:37,679 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:12:37,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:12:37,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-21 19:12:37,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:12:37,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-10-21 19:12:37,738 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-21 19:12:37,739 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-21 19:12:37,739 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-21 19:12:37,740 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-21 19:12:37,740 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-21 19:12:37,741 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-21 19:12:37,741 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_data [2021-10-21 19:12:37,741 INFO L138 BoogieDeclarations]: Found implementation of procedure free_data [2021-10-21 19:12:37,741 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-21 19:12:37,741 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-21 19:12:37,742 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-21 19:12:37,742 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-21 19:12:37,742 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-21 19:12:37,742 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-21 19:12:37,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:12:37,743 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-21 19:12:37,743 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-21 19:12:37,743 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-21 19:12:37,743 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-21 19:12:37,743 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-21 19:12:37,743 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-21 19:12:37,744 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-21 19:12:37,744 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-21 19:12:37,744 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-21 19:12:37,744 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-21 19:12:37,744 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-21 19:12:37,745 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-21 19:12:37,745 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-21 19:12:37,745 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-21 19:12:37,745 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-21 19:12:37,745 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-21 19:12:37,745 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-21 19:12:37,746 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-21 19:12:37,746 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-21 19:12:37,746 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-21 19:12:37,746 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-21 19:12:37,746 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-21 19:12:37,746 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-21 19:12:37,747 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-21 19:12:37,747 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-21 19:12:37,747 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-21 19:12:37,747 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-21 19:12:37,748 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-21 19:12:37,748 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-21 19:12:37,748 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-21 19:12:37,749 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-21 19:12:37,749 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-21 19:12:37,750 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-21 19:12:37,750 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-21 19:12:37,750 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-21 19:12:37,750 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-21 19:12:37,751 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-21 19:12:37,751 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-21 19:12:37,751 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-21 19:12:37,751 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-21 19:12:37,751 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-21 19:12:37,751 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-21 19:12:37,752 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-21 19:12:37,752 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-21 19:12:37,752 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-21 19:12:37,752 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-21 19:12:37,753 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-21 19:12:37,754 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-21 19:12:37,754 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-21 19:12:37,755 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-21 19:12:37,755 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-21 19:12:37,755 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-21 19:12:37,755 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-21 19:12:37,756 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-21 19:12:37,756 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-21 19:12:37,756 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-21 19:12:37,756 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-21 19:12:37,756 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-21 19:12:37,756 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-21 19:12:37,757 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-21 19:12:37,757 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-21 19:12:37,757 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-21 19:12:37,757 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-21 19:12:37,758 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-21 19:12:37,758 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-21 19:12:37,758 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-21 19:12:37,759 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-21 19:12:37,759 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-21 19:12:37,759 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-21 19:12:37,759 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-21 19:12:37,759 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-21 19:12:37,759 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-21 19:12:37,760 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-21 19:12:37,760 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-21 19:12:37,760 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-21 19:12:37,760 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-21 19:12:37,760 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-21 19:12:37,760 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-21 19:12:37,761 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-21 19:12:37,761 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-21 19:12:37,761 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-21 19:12:37,761 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-21 19:12:37,761 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-21 19:12:37,761 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-21 19:12:37,762 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-21 19:12:37,762 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-21 19:12:37,762 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-21 19:12:37,763 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-21 19:12:37,763 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-21 19:12:37,763 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-21 19:12:37,763 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-21 19:12:37,764 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-21 19:12:37,764 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-21 19:12:37,765 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-21 19:12:37,765 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-21 19:12:37,765 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-21 19:12:37,765 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-21 19:12:37,765 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-21 19:12:37,765 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-21 19:12:37,766 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-21 19:12:37,766 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-21 19:12:37,766 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-21 19:12:37,766 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-21 19:12:37,767 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-21 19:12:37,767 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-21 19:12:37,767 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-21 19:12:37,767 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_data [2021-10-21 19:12:37,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-21 19:12:37,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-21 19:12:37,771 INFO L130 BoogieDeclarations]: Found specification of procedure free_data [2021-10-21 19:12:37,772 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-21 19:12:37,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-21 19:12:37,788 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-21 19:12:37,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-21 19:12:37,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-21 19:12:37,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:12:37,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-10-21 19:12:37,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-10-21 19:12:37,797 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-10-21 19:12:38,444 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:12:38,445 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-10-21 19:12:38,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:12:38 BoogieIcfgContainer [2021-10-21 19:12:38,447 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:12:38,449 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:12:38,449 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:12:38,456 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:12:38,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:12:36" (1/3) ... [2021-10-21 19:12:38,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77b81251 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:12:38, skipping insertion in model container [2021-10-21 19:12:38,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:12:37" (2/3) ... [2021-10-21 19:12:38,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77b81251 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:12:38, skipping insertion in model container [2021-10-21 19:12:38,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:12:38" (3/3) ... [2021-10-21 19:12:38,468 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0019-2.i [2021-10-21 19:12:38,474 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:12:38,474 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2021-10-21 19:12:38,535 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:12:38,541 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 [2021-10-21 19:12:38,541 INFO L340 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2021-10-21 19:12:38,556 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) [2021-10-21 19:12:38,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-21 19:12:38,565 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:12:38,565 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:12:38,566 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting alloc_dataErr0REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-10-21 19:12:38,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:12:38,572 INFO L82 PathProgramCache]: Analyzing trace with hash 153654014, now seen corresponding path program 1 times [2021-10-21 19:12:38,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:12:38,584 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1395253423] [2021-10-21 19:12:38,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:12:38,585 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:12:38,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:12:38,589 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:12:38,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-21 19:12:38,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:12:38,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 19:12:38,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:12:38,845 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 [2021-10-21 19:12:38,914 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-21 19:12:38,914 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 [2021-10-21 19:12:38,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:12:38,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:12:39,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:12:39,034 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:12:39,035 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1395253423] [2021-10-21 19:12:39,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1395253423] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:12:39,036 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:12:39,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-10-21 19:12:39,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280885130] [2021-10-21 19:12:39,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:12:39,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:12:39,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:12:39,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:12:39,065 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) [2021-10-21 19:12:39,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:12:39,314 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2021-10-21 19:12:39,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:12:39,317 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 [2021-10-21 19:12:39,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:12:39,325 INFO L225 Difference]: With dead ends: 53 [2021-10-21 19:12:39,325 INFO L226 Difference]: Without dead ends: 50 [2021-10-21 19:12:39,327 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 82.2ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:12:39,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-10-21 19:12:39,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-10-21 19:12:39,377 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) [2021-10-21 19:12:39,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2021-10-21 19:12:39,379 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 9 [2021-10-21 19:12:39,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:12:39,379 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2021-10-21 19:12:39,379 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) [2021-10-21 19:12:39,380 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2021-10-21 19:12:39,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-21 19:12:39,380 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:12:39,380 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:12:39,395 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-21 19:12:39,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:12:39,581 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting alloc_dataErr1REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-10-21 19:12:39,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:12:39,582 INFO L82 PathProgramCache]: Analyzing trace with hash 153654015, now seen corresponding path program 1 times [2021-10-21 19:12:39,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:12:39,583 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2002833055] [2021-10-21 19:12:39,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:12:39,583 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:12:39,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:12:39,586 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:12:39,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-21 19:12:39,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:12:39,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-21 19:12:39,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:12:39,776 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 [2021-10-21 19:12:39,781 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 [2021-10-21 19:12:39,907 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-21 19:12:39,907 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 [2021-10-21 19:12:39,915 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-21 19:12:39,916 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 [2021-10-21 19:12:39,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:12:39,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:12:41,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:12:41,355 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:12:41,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2002833055] [2021-10-21 19:12:41,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2002833055] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:12:41,356 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:12:41,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-21 19:12:41,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996052069] [2021-10-21 19:12:41,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-21 19:12:41,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:12:41,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 19:12:41,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:12:41,360 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) [2021-10-21 19:12:42,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:12:42,103 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2021-10-21 19:12:42,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 19:12:42,107 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 [2021-10-21 19:12:42,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:12:42,108 INFO L225 Difference]: With dead ends: 49 [2021-10-21 19:12:42,108 INFO L226 Difference]: Without dead ends: 49 [2021-10-21 19:12:42,109 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1327.9ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-10-21 19:12:42,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-10-21 19:12:42,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2021-10-21 19:12:42,114 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) [2021-10-21 19:12:42,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2021-10-21 19:12:42,116 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 9 [2021-10-21 19:12:42,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:12:42,116 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2021-10-21 19:12:42,116 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) [2021-10-21 19:12:42,117 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2021-10-21 19:12:42,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-21 19:12:42,117 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:12:42,117 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:12:42,130 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-21 19:12:42,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:12:42,322 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting alloc_dataErr3REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-10-21 19:12:42,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:12:42,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1632619936, now seen corresponding path program 1 times [2021-10-21 19:12:42,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:12:42,324 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2046707427] [2021-10-21 19:12:42,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:12:42,324 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:12:42,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:12:42,325 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:12:42,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-21 19:12:42,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:12:42,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-21 19:12:42,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:12:42,523 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 [2021-10-21 19:12:42,532 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 [2021-10-21 19:12:42,646 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-21 19:12:42,646 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 [2021-10-21 19:12:42,664 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-21 19:12:42,665 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 [2021-10-21 19:12:42,856 INFO L354 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2021-10-21 19:12:42,856 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 [2021-10-21 19:12:42,868 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-21 19:12:42,869 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 [2021-10-21 19:12:42,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:12:42,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:12:45,272 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-10-21 19:12:45,273 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 [2021-10-21 19:12:46,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:12:46,391 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:12:46,391 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2046707427] [2021-10-21 19:12:46,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2046707427] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:12:46,392 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:12:46,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [] total 10 [2021-10-21 19:12:46,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120934401] [2021-10-21 19:12:46,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-21 19:12:46,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:12:46,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-21 19:12:46,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=81, Unknown=1, NotChecked=0, Total=110 [2021-10-21 19:12:46,394 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) [2021-10-21 19:12:47,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:12:47,301 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2021-10-21 19:12:47,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 19:12:47,302 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 [2021-10-21 19:12:47,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:12:47,303 INFO L225 Difference]: With dead ends: 48 [2021-10-21 19:12:47,303 INFO L226 Difference]: Without dead ends: 48 [2021-10-21 19:12:47,304 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 3343.3ms TimeCoverageRelationStatistics Valid=43, Invalid=112, Unknown=1, NotChecked=0, Total=156 [2021-10-21 19:12:47,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-10-21 19:12:47,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-10-21 19:12:47,309 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) [2021-10-21 19:12:47,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2021-10-21 19:12:47,311 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 11 [2021-10-21 19:12:47,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:12:47,311 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2021-10-21 19:12:47,311 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) [2021-10-21 19:12:47,312 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2021-10-21 19:12:47,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-21 19:12:47,312 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:12:47,313 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:12:47,334 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-10-21 19:12:47,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:12:47,524 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting free_dataErr0REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-10-21 19:12:47,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:12:47,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1202400066, now seen corresponding path program 1 times [2021-10-21 19:12:47,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:12:47,526 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1075075224] [2021-10-21 19:12:47,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:12:47,526 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:12:47,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:12:47,534 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:12:47,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-21 19:12:47,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:12:47,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-21 19:12:47,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:12:47,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:12:47,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:12:47,936 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-10-21 19:12:47,936 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 [2021-10-21 19:12:47,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:12:47,971 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:12:47,971 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1075075224] [2021-10-21 19:12:47,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1075075224] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:12:47,971 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:12:47,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-10-21 19:12:47,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190560490] [2021-10-21 19:12:47,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:12:47,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:12:47,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:12:47,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:12:47,973 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) [2021-10-21 19:12:48,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:12:48,362 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2021-10-21 19:12:48,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 19:12:48,363 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 [2021-10-21 19:12:48,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:12:48,364 INFO L225 Difference]: With dead ends: 52 [2021-10-21 19:12:48,364 INFO L226 Difference]: Without dead ends: 52 [2021-10-21 19:12:48,364 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 114.8ms TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:12:48,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-21 19:12:48,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2021-10-21 19:12:48,374 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) [2021-10-21 19:12:48,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2021-10-21 19:12:48,375 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 17 [2021-10-21 19:12:48,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:12:48,375 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2021-10-21 19:12:48,376 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) [2021-10-21 19:12:48,376 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2021-10-21 19:12:48,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-21 19:12:48,376 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:12:48,376 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:12:48,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-21 19:12:48,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:12:48,577 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting free_dataErr1REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-10-21 19:12:48,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:12:48,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1202400067, now seen corresponding path program 1 times [2021-10-21 19:12:48,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:12:48,578 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1445685354] [2021-10-21 19:12:48,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:12:48,578 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:12:48,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:12:48,579 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:12:48,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-21 19:12:48,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:12:48,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-21 19:12:48,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:12:48,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:12:48,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:12:49,351 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 [2021-10-21 19:12:49,704 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-21 19:12:49,705 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 [2021-10-21 19:12:50,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:12:50,048 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:12:50,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1445685354] [2021-10-21 19:12:50,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1445685354] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:12:50,048 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:12:50,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-21 19:12:50,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955030689] [2021-10-21 19:12:50,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-21 19:12:50,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:12:50,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-21 19:12:50,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-21 19:12:50,051 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) [2021-10-21 19:12:50,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:12:50,762 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2021-10-21 19:12:50,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 19:12:50,762 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 [2021-10-21 19:12:50,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:12:50,763 INFO L225 Difference]: With dead ends: 42 [2021-10-21 19:12:50,763 INFO L226 Difference]: Without dead ends: 42 [2021-10-21 19:12:50,764 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 883.9ms TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2021-10-21 19:12:50,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-10-21 19:12:50,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-10-21 19:12:50,769 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) [2021-10-21 19:12:50,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2021-10-21 19:12:50,771 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 17 [2021-10-21 19:12:50,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:12:50,771 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2021-10-21 19:12:50,771 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) [2021-10-21 19:12:50,771 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2021-10-21 19:12:50,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-21 19:12:50,772 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:12:50,772 INFO L512 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] [2021-10-21 19:12:50,789 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-21 19:12:50,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:12:50,985 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)] === [2021-10-21 19:12:50,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:12:50,985 INFO L82 PathProgramCache]: Analyzing trace with hash -1648280676, now seen corresponding path program 1 times [2021-10-21 19:12:50,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:12:50,985 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1879305373] [2021-10-21 19:12:50,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:12:50,986 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:12:50,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:12:50,986 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:12:50,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-21 19:12:51,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:12:51,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-21 19:12:51,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:12:51,253 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 [2021-10-21 19:12:51,400 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 [2021-10-21 19:12:51,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:12:51,469 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:12:51,629 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 [2021-10-21 19:12:51,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:12:51,710 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:12:51,710 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1879305373] [2021-10-21 19:12:51,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1879305373] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:12:51,710 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:12:51,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 10 [2021-10-21 19:12:51,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987114591] [2021-10-21 19:12:51,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-21 19:12:51,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:12:51,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-21 19:12:51,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-10-21 19:12:51,712 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) [2021-10-21 19:12:52,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:12:52,395 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2021-10-21 19:12:52,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-21 19:12:52,396 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 [2021-10-21 19:12:52,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:12:52,398 INFO L225 Difference]: With dead ends: 43 [2021-10-21 19:12:52,398 INFO L226 Difference]: Without dead ends: 43 [2021-10-21 19:12:52,399 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 351.2ms TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2021-10-21 19:12:52,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-10-21 19:12:52,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2021-10-21 19:12:52,402 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) [2021-10-21 19:12:52,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2021-10-21 19:12:52,403 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 22 [2021-10-21 19:12:52,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:12:52,403 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2021-10-21 19:12:52,404 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) [2021-10-21 19:12:52,404 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2021-10-21 19:12:52,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-21 19:12:52,404 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:12:52,404 INFO L512 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] [2021-10-21 19:12:52,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-21 19:12:52,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:12:52,605 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)] === [2021-10-21 19:12:52,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:12:52,606 INFO L82 PathProgramCache]: Analyzing trace with hash 442906694, now seen corresponding path program 1 times [2021-10-21 19:12:52,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:12:52,606 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [410273609] [2021-10-21 19:12:52,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:12:52,606 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:12:52,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:12:52,607 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:12:52,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-21 19:12:52,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:12:52,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-21 19:12:52,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:12:53,070 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 [2021-10-21 19:12:53,496 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 [2021-10-21 19:12:53,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:12:53,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:12:54,426 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 [2021-10-21 19:12:54,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:12:54,640 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:12:54,640 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [410273609] [2021-10-21 19:12:54,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [410273609] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:12:54,640 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:12:54,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 10] imperfect sequences [] total 20 [2021-10-21 19:12:54,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717720837] [2021-10-21 19:12:54,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-21 19:12:54,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:12:54,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-21 19:12:54,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2021-10-21 19:12:54,642 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) [2021-10-21 19:12:56,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:12:56,649 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2021-10-21 19:12:56,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-21 19:12:56,651 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 [2021-10-21 19:12:56,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:12:56,652 INFO L225 Difference]: With dead ends: 41 [2021-10-21 19:12:56,652 INFO L226 Difference]: Without dead ends: 41 [2021-10-21 19:12:56,653 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 1432.2ms TimeCoverageRelationStatistics Valid=125, Invalid=577, Unknown=0, NotChecked=0, Total=702 [2021-10-21 19:12:56,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-10-21 19:12:56,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2021-10-21 19:12:56,656 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) [2021-10-21 19:12:56,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2021-10-21 19:12:56,657 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 23 [2021-10-21 19:12:56,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:12:56,657 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2021-10-21 19:12:56,657 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) [2021-10-21 19:12:56,658 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2021-10-21 19:12:56,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-21 19:12:56,658 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:12:56,659 INFO L512 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] [2021-10-21 19:12:56,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-21 19:12:56,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:12:56,876 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)] === [2021-10-21 19:12:56,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:12:56,877 INFO L82 PathProgramCache]: Analyzing trace with hash 845205726, now seen corresponding path program 1 times [2021-10-21 19:12:56,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:12:56,877 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [157677113] [2021-10-21 19:12:56,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:12:56,877 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:12:56,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:12:56,879 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:12:56,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-21 19:12:57,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:12:57,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-21 19:12:57,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:12:57,135 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 [2021-10-21 19:12:57,173 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 [2021-10-21 19:12:57,409 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 [2021-10-21 19:12:57,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:12:57,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:12:57,871 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 [2021-10-21 19:12:58,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:12:58,057 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:12:58,057 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [157677113] [2021-10-21 19:12:58,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [157677113] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:12:58,058 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:12:58,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 11 [2021-10-21 19:12:58,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717548640] [2021-10-21 19:12:58,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-21 19:12:58,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:12:58,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-21 19:12:58,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-10-21 19:12:58,059 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) [2021-10-21 19:12:58,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:12:58,932 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2021-10-21 19:12:58,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-21 19:12:58,933 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 [2021-10-21 19:12:58,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:12:58,934 INFO L225 Difference]: With dead ends: 40 [2021-10-21 19:12:58,934 INFO L226 Difference]: Without dead ends: 40 [2021-10-21 19:12:58,935 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 28 SyntacticMatches, 9 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 749.1ms TimeCoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2021-10-21 19:12:58,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-10-21 19:12:58,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2021-10-21 19:12:58,937 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) [2021-10-21 19:12:58,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2021-10-21 19:12:58,938 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 24 [2021-10-21 19:12:58,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:12:58,939 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2021-10-21 19:12:58,939 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) [2021-10-21 19:12:58,939 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2021-10-21 19:12:58,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-21 19:12:58,940 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:12:58,940 INFO L512 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] [2021-10-21 19:12:58,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-21 19:12:59,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:12:59,143 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)] === [2021-10-21 19:12:59,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:12:59,143 INFO L82 PathProgramCache]: Analyzing trace with hash -1869371830, now seen corresponding path program 1 times [2021-10-21 19:12:59,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:12:59,143 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1660649977] [2021-10-21 19:12:59,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:12:59,144 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:12:59,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:12:59,145 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:12:59,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-21 19:12:59,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:12:59,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-21 19:12:59,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:12:59,422 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 [2021-10-21 19:12:59,463 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 [2021-10-21 19:12:59,519 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-10-21 19:12:59,519 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 [2021-10-21 19:12:59,591 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-10-21 19:12:59,591 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 [2021-10-21 19:12:59,903 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-10-21 19:12:59,903 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 [2021-10-21 19:12:59,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:12:59,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:13:00,548 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-10-21 19:13:00,549 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 [2021-10-21 19:13:00,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:13:00,849 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:13:00,849 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1660649977] [2021-10-21 19:13:00,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1660649977] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:13:00,849 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:13:00,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 18 [2021-10-21 19:13:00,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921081427] [2021-10-21 19:13:00,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-21 19:13:00,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:13:00,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-21 19:13:00,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2021-10-21 19:13:00,852 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) [2021-10-21 19:13:02,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:13:02,092 INFO L93 Difference]: Finished difference Result 28 states and 27 transitions. [2021-10-21 19:13:02,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-21 19:13:02,093 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 [2021-10-21 19:13:02,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:13:02,094 INFO L225 Difference]: With dead ends: 28 [2021-10-21 19:13:02,094 INFO L226 Difference]: Without dead ends: 28 [2021-10-21 19:13:02,095 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1265.4ms TimeCoverageRelationStatistics Valid=107, Invalid=649, Unknown=0, NotChecked=0, Total=756 [2021-10-21 19:13:02,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-21 19:13:02,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-10-21 19:13:02,097 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) [2021-10-21 19:13:02,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 27 transitions. [2021-10-21 19:13:02,098 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 27 transitions. Word has length 27 [2021-10-21 19:13:02,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:13:02,098 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 27 transitions. [2021-10-21 19:13:02,098 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) [2021-10-21 19:13:02,098 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 27 transitions. [2021-10-21 19:13:02,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-21 19:13:02,099 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:13:02,099 INFO L512 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] [2021-10-21 19:13:02,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-21 19:13:02,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:13:02,302 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-10-21 19:13:02,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:13:02,302 INFO L82 PathProgramCache]: Analyzing trace with hash -1914061661, now seen corresponding path program 1 times [2021-10-21 19:13:02,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:13:02,303 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1063794210] [2021-10-21 19:13:02,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:13:02,303 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:13:02,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:13:02,304 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:13:02,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-21 19:13:02,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:13:02,548 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:13:02,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:13:02,688 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-21 19:13:02,688 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-21 19:13:02,689 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK [2021-10-21 19:13:02,691 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_dataErr0REQUIRES_VIOLATION [2021-10-21 19:13:02,691 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_dataErr1REQUIRES_VIOLATION [2021-10-21 19:13:02,691 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_dataErr2REQUIRES_VIOLATION [2021-10-21 19:13:02,691 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_dataErr3REQUIRES_VIOLATION [2021-10-21 19:13:02,691 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr0REQUIRES_VIOLATION [2021-10-21 19:13:02,692 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr1REQUIRES_VIOLATION [2021-10-21 19:13:02,692 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr2REQUIRES_VIOLATION [2021-10-21 19:13:02,692 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr3REQUIRES_VIOLATION [2021-10-21 19:13:02,692 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr4ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:13:02,692 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr5ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:13:02,692 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr6ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:13:02,693 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr7ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:13:02,693 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr8ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:13:02,693 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr9ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 19:13:02,693 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr10REQUIRES_VIOLATION [2021-10-21 19:13:02,693 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr11REQUIRES_VIOLATION [2021-10-21 19:13:02,693 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr12REQUIRES_VIOLATION [2021-10-21 19:13:02,693 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr13REQUIRES_VIOLATION [2021-10-21 19:13:02,732 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-21 19:13:02,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:13:02,899 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 19:13:02,912 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-10-21 19:13:02,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 07:13:02 BoogieIcfgContainer [2021-10-21 19:13:02,931 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 19:13:02,931 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:13:02,931 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:13:02,932 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:13:02,932 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:12:38" (3/4) ... [2021-10-21 19:13:02,940 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-21 19:13:02,946 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:13:02,947 INFO L168 Benchmark]: Toolchain (without parser) took 25951.41 ms. Allocated memory was 62.9 MB in the beginning and 107.0 MB in the end (delta: 44.0 MB). Free memory was 41.3 MB in the beginning and 29.5 MB in the end (delta: 11.8 MB). Peak memory consumption was 54.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:13:02,948 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 62.9 MB. Free memory is still 44.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:13:02,948 INFO L168 Benchmark]: CACSL2BoogieTranslator took 541.54 ms. Allocated memory is still 62.9 MB. Free memory was 41.1 MB in the beginning and 38.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 19:13:02,948 INFO L168 Benchmark]: Boogie Preprocessor took 98.76 ms. Allocated memory is still 62.9 MB. Free memory was 38.7 MB in the beginning and 35.8 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 19:13:02,949 INFO L168 Benchmark]: RCFGBuilder took 805.74 ms. Allocated memory was 62.9 MB in the beginning and 83.9 MB in the end (delta: 21.0 MB). Free memory was 35.8 MB in the beginning and 51.5 MB in the end (delta: -15.6 MB). Peak memory consumption was 12.8 MB. Max. memory is 16.1 GB. [2021-10-21 19:13:02,949 INFO L168 Benchmark]: TraceAbstraction took 24481.76 ms. Allocated memory was 83.9 MB in the beginning and 107.0 MB in the end (delta: 23.1 MB). Free memory was 51.1 MB in the beginning and 30.5 MB in the end (delta: 20.6 MB). Peak memory consumption was 44.5 MB. Max. memory is 16.1 GB. [2021-10-21 19:13:02,950 INFO L168 Benchmark]: Witness Printer took 15.05 ms. Allocated memory is still 107.0 MB. Free memory was 30.5 MB in the beginning and 29.5 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:13:02,951 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 62.9 MB. Free memory is still 44.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 541.54 ms. Allocated memory is still 62.9 MB. Free memory was 41.1 MB in the beginning and 38.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 98.76 ms. Allocated memory is still 62.9 MB. Free memory was 38.7 MB in the beginning and 35.8 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 805.74 ms. Allocated memory was 62.9 MB in the beginning and 83.9 MB in the end (delta: 21.0 MB). Free memory was 35.8 MB in the beginning and 51.5 MB in the end (delta: -15.6 MB). Peak memory consumption was 12.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 24481.76 ms. Allocated memory was 83.9 MB in the beginning and 107.0 MB in the end (delta: 23.1 MB). Free memory was 51.1 MB in the beginning and 30.5 MB in the end (delta: 20.6 MB). Peak memory consumption was 44.5 MB. Max. memory is 16.1 GB. * Witness Printer took 15.05 ms. Allocated memory is still 107.0 MB. Free memory was 30.5 MB in the beginning and 29.5 MB in the end (delta: 1.0 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, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms 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: 24364.5ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 18.1ms, AutomataDifference: 7866.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 262 SDtfs, 331 SDslu, 1029 SDs, 0 SdLazy, 1375 SolverSat, 88 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5130.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 348 GetRequests, 204 SyntacticMatches, 15 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 9550.4ms Time, 0.0ms 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, 0.0ms DumpTime, AutomataMinimizationStatistics: 82.9ms AutomataMinimizationTime, 9 MinimizatonAttempts, 15 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 130.3ms SsaConstructionTime, 446.7ms SatisfiabilityAnalysisTime, 12282.8ms 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 [2021-10-21 19:13:03,018 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892886fb-03ee-4747-a451-7752da813e56/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...