./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-properties/list_flag-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d25c488-1336-47ce-8583-3fe6d87e8215/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d25c488-1336-47ce-8583-3fe6d87e8215/bin/uautomizer-hJ6jxDFKc3/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d25c488-1336-47ce-8583-3fe6d87e8215/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d25c488-1336-47ce-8583-3fe6d87e8215/bin/uautomizer-hJ6jxDFKc3/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/list_flag-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d25c488-1336-47ce-8583-3fe6d87e8215/bin/uautomizer-hJ6jxDFKc3/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d25c488-1336-47ce-8583-3fe6d87e8215/bin/uautomizer-hJ6jxDFKc3 --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 e2748dac41bc6cdd06fa5d8793326edbc7d40c79 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_7d25c488-1336-47ce-8583-3fe6d87e8215/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d25c488-1336-47ce-8583-3fe6d87e8215/bin/uautomizer-hJ6jxDFKc3/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d25c488-1336-47ce-8583-3fe6d87e8215/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d25c488-1336-47ce-8583-3fe6d87e8215/bin/uautomizer-hJ6jxDFKc3/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/list_flag-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d25c488-1336-47ce-8583-3fe6d87e8215/bin/uautomizer-hJ6jxDFKc3/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d25c488-1336-47ce-8583-3fe6d87e8215/bin/uautomizer-hJ6jxDFKc3 --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 e2748dac41bc6cdd06fa5d8793326edbc7d40c79 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-15 19:42:53,570 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 19:42:53,573 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 19:42:53,620 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 19:42:53,621 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 19:42:53,622 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 19:42:53,625 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 19:42:53,627 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 19:42:53,630 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 19:42:53,631 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 19:42:53,633 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 19:42:53,634 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 19:42:53,635 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 19:42:53,636 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 19:42:53,638 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 19:42:53,640 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 19:42:53,642 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 19:42:53,643 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 19:42:53,646 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 19:42:53,649 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 19:42:53,655 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 19:42:53,663 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 19:42:53,665 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 19:42:53,666 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 19:42:53,670 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 19:42:53,670 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 19:42:53,671 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 19:42:53,672 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 19:42:53,673 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 19:42:53,674 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 19:42:53,674 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 19:42:53,675 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 19:42:53,676 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 19:42:53,686 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 19:42:53,689 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 19:42:53,689 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 19:42:53,690 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 19:42:53,690 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 19:42:53,690 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 19:42:53,692 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 19:42:53,692 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 19:42:53,693 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d25c488-1336-47ce-8583-3fe6d87e8215/bin/uautomizer-hJ6jxDFKc3/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-15 19:42:53,746 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 19:42:53,747 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 19:42:53,747 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 19:42:53,747 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 19:42:53,748 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 19:42:53,749 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 19:42:53,749 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 19:42:53,749 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 19:42:53,749 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 19:42:53,749 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-15 19:42:53,750 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 19:42:53,750 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 19:42:53,750 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 19:42:53,750 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-15 19:42:53,750 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-15 19:42:53,751 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-15 19:42:53,751 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 19:42:53,751 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-15 19:42:53,751 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 19:42:53,751 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 19:42:53,752 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 19:42:53,752 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 19:42:53,752 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 19:42:53,752 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:42:53,752 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 19:42:53,753 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 19:42:53,753 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-15 19:42:53,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-15 19:42:53,759 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 19:42:53,765 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_7d25c488-1336-47ce-8583-3fe6d87e8215/bin/uautomizer-hJ6jxDFKc3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d25c488-1336-47ce-8583-3fe6d87e8215/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e2748dac41bc6cdd06fa5d8793326edbc7d40c79 [2021-10-15 19:42:54,061 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 19:42:54,083 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 19:42:54,085 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 19:42:54,087 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 19:42:54,087 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 19:42:54,088 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d25c488-1336-47ce-8583-3fe6d87e8215/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/list-properties/list_flag-2.i [2021-10-15 19:42:54,165 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d25c488-1336-47ce-8583-3fe6d87e8215/bin/uautomizer-hJ6jxDFKc3/data/8d8bb2a81/159f94567c6643dea65ad679ab874388/FLAG350347377 [2021-10-15 19:42:54,694 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 19:42:54,701 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d25c488-1336-47ce-8583-3fe6d87e8215/sv-benchmarks/c/list-properties/list_flag-2.i [2021-10-15 19:42:54,723 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d25c488-1336-47ce-8583-3fe6d87e8215/bin/uautomizer-hJ6jxDFKc3/data/8d8bb2a81/159f94567c6643dea65ad679ab874388/FLAG350347377 [2021-10-15 19:42:55,023 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d25c488-1336-47ce-8583-3fe6d87e8215/bin/uautomizer-hJ6jxDFKc3/data/8d8bb2a81/159f94567c6643dea65ad679ab874388 [2021-10-15 19:42:55,029 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 19:42:55,031 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-15 19:42:55,036 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 19:42:55,036 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 19:42:55,041 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 19:42:55,041 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:42:55" (1/1) ... [2021-10-15 19:42:55,042 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24831ef8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:42:55, skipping insertion in model container [2021-10-15 19:42:55,043 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:42:55" (1/1) ... [2021-10-15 19:42:55,051 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 19:42:55,113 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 19:42:55,472 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d25c488-1336-47ce-8583-3fe6d87e8215/sv-benchmarks/c/list-properties/list_flag-2.i[23375,23388] [2021-10-15 19:42:55,475 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:42:55,485 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 19:42:55,532 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d25c488-1336-47ce-8583-3fe6d87e8215/sv-benchmarks/c/list-properties/list_flag-2.i[23375,23388] [2021-10-15 19:42:55,538 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:42:55,574 INFO L208 MainTranslator]: Completed translation [2021-10-15 19:42:55,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:42:55 WrapperNode [2021-10-15 19:42:55,575 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 19:42:55,577 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 19:42:55,578 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 19:42:55,578 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 19:42:55,591 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:42:55" (1/1) ... [2021-10-15 19:42:55,591 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:42:55" (1/1) ... [2021-10-15 19:42:55,626 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:42:55" (1/1) ... [2021-10-15 19:42:55,626 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:42:55" (1/1) ... [2021-10-15 19:42:55,657 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:42:55" (1/1) ... [2021-10-15 19:42:55,661 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:42:55" (1/1) ... [2021-10-15 19:42:55,665 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:42:55" (1/1) ... [2021-10-15 19:42:55,683 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 19:42:55,684 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 19:42:55,684 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 19:42:55,684 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 19:42:55,690 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:42:55" (1/1) ... [2021-10-15 19:42:55,698 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:42:55,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d25c488-1336-47ce-8583-3fe6d87e8215/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:42:55,727 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d25c488-1336-47ce-8583-3fe6d87e8215/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 19:42:55,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d25c488-1336-47ce-8583-3fe6d87e8215/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 19:42:55,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-15 19:42:55,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 19:42:55,779 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-15 19:42:55,780 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-15 19:42:55,780 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-15 19:42:55,781 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-15 19:42:55,781 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-15 19:42:55,781 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-15 19:42:55,781 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-10-15 19:42:55,782 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-15 19:42:55,783 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-15 19:42:55,783 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-15 19:42:55,783 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-15 19:42:55,783 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-15 19:42:55,783 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-15 19:42:55,784 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 19:42:55,784 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-15 19:42:55,784 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-15 19:42:55,784 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-15 19:42:55,785 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-15 19:42:55,785 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-15 19:42:55,785 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-15 19:42:55,785 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-15 19:42:55,785 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-15 19:42:55,786 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-15 19:42:55,786 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-15 19:42:55,786 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-15 19:42:55,786 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-15 19:42:55,786 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-15 19:42:55,787 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-15 19:42:55,787 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-15 19:42:55,787 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-15 19:42:55,787 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-15 19:42:55,787 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-15 19:42:55,787 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-15 19:42:55,788 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-15 19:42:55,788 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-15 19:42:55,788 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-15 19:42:55,788 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-15 19:42:55,789 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-15 19:42:55,789 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-15 19:42:55,789 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-15 19:42:55,789 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-15 19:42:55,789 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-15 19:42:55,789 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-15 19:42:55,790 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-15 19:42:55,790 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-15 19:42:55,790 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-15 19:42:55,791 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-15 19:42:55,791 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-15 19:42:55,792 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-15 19:42:55,792 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-15 19:42:55,792 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-15 19:42:55,792 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-15 19:42:55,792 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-15 19:42:55,793 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-15 19:42:55,793 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-15 19:42:55,793 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-15 19:42:55,793 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-15 19:42:55,794 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-15 19:42:55,794 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-15 19:42:55,794 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-15 19:42:55,794 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-15 19:42:55,794 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-15 19:42:55,795 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-15 19:42:55,795 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-15 19:42:55,796 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-15 19:42:55,797 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-15 19:42:55,797 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-15 19:42:55,797 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-15 19:42:55,798 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-15 19:42:55,798 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-15 19:42:55,798 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-15 19:42:55,798 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-15 19:42:55,798 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-15 19:42:55,799 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-15 19:42:55,799 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-15 19:42:55,799 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-15 19:42:55,799 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-15 19:42:55,799 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-15 19:42:55,799 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-15 19:42:55,800 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-15 19:42:55,800 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-15 19:42:55,801 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-15 19:42:55,801 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-15 19:42:55,801 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-15 19:42:55,801 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-15 19:42:55,802 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-15 19:42:55,802 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-15 19:42:55,802 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-15 19:42:55,802 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-15 19:42:55,802 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-15 19:42:55,802 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-15 19:42:55,803 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-15 19:42:55,803 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-15 19:42:55,803 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-15 19:42:55,803 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-15 19:42:55,803 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-15 19:42:55,803 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-15 19:42:55,804 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-15 19:42:55,804 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-15 19:42:55,804 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-15 19:42:55,804 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-15 19:42:55,804 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-15 19:42:55,805 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-15 19:42:55,805 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-15 19:42:55,805 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-15 19:42:55,805 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-15 19:42:55,806 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-15 19:42:55,807 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-15 19:42:55,807 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-15 19:42:55,807 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-15 19:42:55,807 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-15 19:42:55,807 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-15 19:42:55,808 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-15 19:42:55,808 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-15 19:42:55,808 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-15 19:42:55,808 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-15 19:42:55,808 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-15 19:42:55,809 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-15 19:42:55,809 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-15 19:42:55,809 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-15 19:42:55,809 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-15 19:42:55,810 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-10-15 19:42:55,810 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-15 19:42:55,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-15 19:42:55,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-15 19:42:55,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-15 19:42:55,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-15 19:42:55,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-15 19:42:55,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-15 19:42:55,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-15 19:42:55,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 19:42:55,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-15 19:42:56,124 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-10-15 19:42:56,349 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 19:42:56,349 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-10-15 19:42:56,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:42:56 BoogieIcfgContainer [2021-10-15 19:42:56,352 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 19:42:56,353 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 19:42:56,354 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 19:42:56,357 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 19:42:56,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 07:42:55" (1/3) ... [2021-10-15 19:42:56,358 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dfaacde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:42:56, skipping insertion in model container [2021-10-15 19:42:56,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:42:55" (2/3) ... [2021-10-15 19:42:56,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dfaacde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:42:56, skipping insertion in model container [2021-10-15 19:42:56,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:42:56" (3/3) ... [2021-10-15 19:42:56,361 INFO L111 eAbstractionObserver]: Analyzing ICFG list_flag-2.i [2021-10-15 19:42:56,367 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 19:42:56,367 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2021-10-15 19:42:56,412 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 19:42:56,419 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, mConcurrency=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 [2021-10-15 19:42:56,419 INFO L340 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2021-10-15 19:42:56,435 INFO L276 IsEmpty]: Start isEmpty. Operand has 62 states, 33 states have (on average 2.0) internal successors, (66), 56 states have internal predecessors, (66), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-15 19:42:56,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-15 19:42:56,443 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 19:42:56,443 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:42:56,444 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr8REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 17 more)] === [2021-10-15 19:42:56,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:42:56,450 INFO L82 PathProgramCache]: Analyzing trace with hash -1866589301, now seen corresponding path program 1 times [2021-10-15 19:42:56,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:42:56,460 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101514055] [2021-10-15 19:42:56,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:42:56,461 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:42:56,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:42:56,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-15 19:42:56,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:42:56,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:42:56,736 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:42:56,737 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101514055] [2021-10-15 19:42:56,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101514055] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:42:56,738 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:42:56,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 19:42:56,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68885817] [2021-10-15 19:42:56,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 19:42:56,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:42:56,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 19:42:56,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 19:42:56,764 INFO L87 Difference]: Start difference. First operand has 62 states, 33 states have (on average 2.0) internal successors, (66), 56 states have internal predecessors, (66), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:42:56,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 19:42:56,904 INFO L93 Difference]: Finished difference Result 62 states and 68 transitions. [2021-10-15 19:42:56,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 19:42:56,906 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-10-15 19:42:56,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 19:42:56,920 INFO L225 Difference]: With dead ends: 62 [2021-10-15 19:42:56,921 INFO L226 Difference]: Without dead ends: 55 [2021-10-15 19:42:56,926 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 19:42:56,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-10-15 19:42:56,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2021-10-15 19:42:56,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 30 states have (on average 1.8666666666666667) internal successors, (56), 51 states have internal predecessors, (56), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:42:56,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2021-10-15 19:42:56,970 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 10 [2021-10-15 19:42:56,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 19:42:56,971 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2021-10-15 19:42:56,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:42:56,971 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2021-10-15 19:42:56,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-15 19:42:56,974 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 19:42:56,974 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:42:56,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-15 19:42:56,975 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr8REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 17 more)] === [2021-10-15 19:42:56,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:42:56,976 INFO L82 PathProgramCache]: Analyzing trace with hash -2029727141, now seen corresponding path program 1 times [2021-10-15 19:42:56,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:42:56,976 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243646669] [2021-10-15 19:42:56,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:42:56,977 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:42:57,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:42:57,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-15 19:42:57,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:42:57,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:42:57,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:42:57,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243646669] [2021-10-15 19:42:57,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243646669] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:42:57,139 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:42:57,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 19:42:57,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962467209] [2021-10-15 19:42:57,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 19:42:57,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:42:57,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 19:42:57,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-15 19:42:57,143 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:42:57,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 19:42:57,378 INFO L93 Difference]: Finished difference Result 63 states and 69 transitions. [2021-10-15 19:42:57,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-15 19:42:57,379 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-10-15 19:42:57,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 19:42:57,382 INFO L225 Difference]: With dead ends: 63 [2021-10-15 19:42:57,382 INFO L226 Difference]: Without dead ends: 63 [2021-10-15 19:42:57,383 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 57.1ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-15 19:42:57,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-10-15 19:42:57,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 58. [2021-10-15 19:42:57,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 38 states have (on average 1.736842105263158) internal successors, (66), 54 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:42:57,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2021-10-15 19:42:57,400 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 11 [2021-10-15 19:42:57,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 19:42:57,401 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2021-10-15 19:42:57,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:42:57,401 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2021-10-15 19:42:57,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-15 19:42:57,402 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 19:42:57,402 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:42:57,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-15 19:42:57,403 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr9REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 17 more)] === [2021-10-15 19:42:57,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:42:57,404 INFO L82 PathProgramCache]: Analyzing trace with hash -2029727140, now seen corresponding path program 1 times [2021-10-15 19:42:57,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:42:57,404 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287869876] [2021-10-15 19:42:57,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:42:57,405 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:42:57,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:42:57,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-15 19:42:57,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:42:57,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:42:57,522 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:42:57,523 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287869876] [2021-10-15 19:42:57,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287869876] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:42:57,523 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:42:57,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 19:42:57,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549319676] [2021-10-15 19:42:57,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 19:42:57,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:42:57,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 19:42:57,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-15 19:42:57,526 INFO L87 Difference]: Start difference. First operand 58 states and 69 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:42:57,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 19:42:57,691 INFO L93 Difference]: Finished difference Result 76 states and 83 transitions. [2021-10-15 19:42:57,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-15 19:42:57,692 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-10-15 19:42:57,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 19:42:57,697 INFO L225 Difference]: With dead ends: 76 [2021-10-15 19:42:57,697 INFO L226 Difference]: Without dead ends: 76 [2021-10-15 19:42:57,697 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.2ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-15 19:42:57,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-10-15 19:42:57,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 67. [2021-10-15 19:42:57,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 47 states have (on average 1.5319148936170213) internal successors, (72), 63 states have internal predecessors, (72), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:42:57,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 75 transitions. [2021-10-15 19:42:57,731 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 75 transitions. Word has length 11 [2021-10-15 19:42:57,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 19:42:57,732 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 75 transitions. [2021-10-15 19:42:57,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:42:57,732 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 75 transitions. [2021-10-15 19:42:57,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-15 19:42:57,734 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 19:42:57,734 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:42:57,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-15 19:42:57,735 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr20ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 17 more)] === [2021-10-15 19:42:57,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:42:57,737 INFO L82 PathProgramCache]: Analyzing trace with hash 315085343, now seen corresponding path program 1 times [2021-10-15 19:42:57,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:42:57,737 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718986755] [2021-10-15 19:42:57,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:42:57,738 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:42:57,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:42:57,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-15 19:42:57,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:42:57,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:42:57,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:42:57,932 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718986755] [2021-10-15 19:42:57,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718986755] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:42:57,933 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:42:57,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-15 19:42:57,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996364133] [2021-10-15 19:42:57,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-15 19:42:57,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:42:57,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-15 19:42:57,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-15 19:42:57,936 INFO L87 Difference]: Start difference. First operand 67 states and 75 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:42:58,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 19:42:58,168 INFO L93 Difference]: Finished difference Result 110 states and 120 transitions. [2021-10-15 19:42:58,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-15 19:42:58,168 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-10-15 19:42:58,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 19:42:58,175 INFO L225 Difference]: With dead ends: 110 [2021-10-15 19:42:58,176 INFO L226 Difference]: Without dead ends: 110 [2021-10-15 19:42:58,179 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 87.8ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-15 19:42:58,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-10-15 19:42:58,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 75. [2021-10-15 19:42:58,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 55 states have (on average 1.509090909090909) internal successors, (83), 71 states have internal predecessors, (83), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:42:58,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 86 transitions. [2021-10-15 19:42:58,196 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 86 transitions. Word has length 18 [2021-10-15 19:42:58,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 19:42:58,197 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 86 transitions. [2021-10-15 19:42:58,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:42:58,197 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 86 transitions. [2021-10-15 19:42:58,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-15 19:42:58,198 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 19:42:58,198 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:42:58,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-15 19:42:58,199 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr21ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 17 more)] === [2021-10-15 19:42:58,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:42:58,200 INFO L82 PathProgramCache]: Analyzing trace with hash 315085504, now seen corresponding path program 1 times [2021-10-15 19:42:58,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:42:58,201 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885751422] [2021-10-15 19:42:58,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:42:58,201 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:42:58,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:42:58,252 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 19:42:58,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:42:58,334 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 19:42:58,335 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-15 19:42:58,336 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr21ENSURES_VIOLATIONMEMORY_LEAK [2021-10-15 19:42:58,338 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-10-15 19:42:58,339 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-10-15 19:42:58,339 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-10-15 19:42:58,340 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-10-15 19:42:58,340 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-10-15 19:42:58,340 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-10-15 19:42:58,340 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-10-15 19:42:58,341 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-10-15 19:42:58,341 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-10-15 19:42:58,341 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-10-15 19:42:58,341 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION [2021-10-15 19:42:58,341 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION [2021-10-15 19:42:58,342 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION [2021-10-15 19:42:58,342 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-10-15 19:42:58,342 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION [2021-10-15 19:42:58,342 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION [2021-10-15 19:42:58,343 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION [2021-10-15 19:42:58,343 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION [2021-10-15 19:42:58,343 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION [2021-10-15 19:42:58,343 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION [2021-10-15 19:42:58,344 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20ASSERT_VIOLATIONMEMORY_LEAK [2021-10-15 19:42:58,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-15 19:42:58,350 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 19:42:58,360 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-10-15 19:42:58,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 07:42:58 BoogieIcfgContainer [2021-10-15 19:42:58,374 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 19:42:58,374 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 19:42:58,374 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 19:42:58,375 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 19:42:58,375 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:42:56" (3/4) ... [2021-10-15 19:42:58,379 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-15 19:42:58,379 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 19:42:58,381 INFO L168 Benchmark]: Toolchain (without parser) took 3348.12 ms. Allocated memory was 100.7 MB in the beginning and 125.8 MB in the end (delta: 25.2 MB). Free memory was 69.7 MB in the beginning and 70.1 MB in the end (delta: -357.7 kB). Peak memory consumption was 23.2 MB. Max. memory is 16.1 GB. [2021-10-15 19:42:58,381 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 100.7 MB. Free memory is still 58.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:42:58,382 INFO L168 Benchmark]: CACSL2BoogieTranslator took 540.68 ms. Allocated memory was 100.7 MB in the beginning and 125.8 MB in the end (delta: 25.2 MB). Free memory was 69.5 MB in the beginning and 94.6 MB in the end (delta: -25.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-15 19:42:58,383 INFO L168 Benchmark]: Boogie Preprocessor took 105.83 ms. Allocated memory is still 125.8 MB. Free memory was 94.6 MB in the beginning and 92.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:42:58,384 INFO L168 Benchmark]: RCFGBuilder took 667.68 ms. Allocated memory is still 125.8 MB. Free memory was 92.0 MB in the beginning and 70.5 MB in the end (delta: 21.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:42:58,384 INFO L168 Benchmark]: TraceAbstraction took 2020.34 ms. Allocated memory is still 125.8 MB. Free memory was 70.0 MB in the beginning and 70.6 MB in the end (delta: -675.1 kB). Peak memory consumption was 890.7 kB. Max. memory is 16.1 GB. [2021-10-15 19:42:58,385 INFO L168 Benchmark]: Witness Printer took 4.79 ms. Allocated memory is still 125.8 MB. Free memory was 70.6 MB in the beginning and 70.1 MB in the end (delta: 552.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:42:58,388 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 100.7 MB. Free memory is still 58.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 540.68 ms. Allocated memory was 100.7 MB in the beginning and 125.8 MB in the end (delta: 25.2 MB). Free memory was 69.5 MB in the beginning and 94.6 MB in the end (delta: -25.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 105.83 ms. Allocated memory is still 125.8 MB. Free memory was 94.6 MB in the beginning and 92.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 667.68 ms. Allocated memory is still 125.8 MB. Free memory was 92.0 MB in the beginning and 70.5 MB in the end (delta: 21.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2020.34 ms. Allocated memory is still 125.8 MB. Free memory was 70.0 MB in the beginning and 70.6 MB in the end (delta: -675.1 kB). Peak memory consumption was 890.7 kB. Max. memory is 16.1 GB. * Witness Printer took 4.79 ms. Allocated memory is still 125.8 MB. Free memory was 70.6 MB in the beginning and 70.1 MB in the end (delta: 552.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms 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: 531]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 531. Possible FailurePath: [L532] int flag = __VERIFIER_nondet_int(); [L533] List p, a, t; [L534] a = (List) malloc(sizeof(struct node)) [L535] COND FALSE !(a == 0) VAL [a={-1:0}, flag=0] [L536] p = a VAL [a={-1:0}, flag=0, p={-1:0}] [L537] COND FALSE !(__VERIFIER_nondet_int()) [L548] p->h = 3 VAL [a={-1:0}, flag=0, p={-1:0}] [L549] p = a VAL [a={-1:0}, flag=0, p={-1:0}] [L550] COND FALSE !(\read(flag)) VAL [a={-1:0}, flag=0, p={-1:0}] [L554] EXPR p->h VAL [a={-1:0}, flag=0, p={-1:0}, p->h=3] [L554] COND FALSE !(p->h == 2) [L556] EXPR p->h VAL [a={-1:0}, flag=0, p={-1:0}, p->h=3] [L556] COND FALSE !(p->h != 3) - UnprovableResult [Line: 539]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 539]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 545]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 545]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 546]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 546]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 556]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 556]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 557]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 81 locations, 22 error locations. Started 1 CEGAR loops. OverallTime: 1938.3ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 17.6ms, AutomataDifference: 832.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 158 SDtfs, 275 SDslu, 173 SDs, 0 SdLazy, 433 SolverSat, 47 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 475.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 211.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=75occurred in iteration=4, InterpolantAutomatonStates: 21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 97.8ms AutomataMinimizationTime, 4 MinimizatonAttempts, 49 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 44.2ms SsaConstructionTime, 149.8ms SatisfiabilityAnalysisTime, 492.8ms InterpolantComputationTime, 68 NumberOfCodeBlocks, 68 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 46 ConstructedInterpolants, 0 QuantifiedInterpolants, 252 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 [2021-10-15 19:42:58,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d25c488-1336-47ce-8583-3fe6d87e8215/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-5709675 [2021-10-15 19:43:01,108 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 19:43:01,111 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 19:43:01,155 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 19:43:01,155 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 19:43:01,160 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 19:43:01,162 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 19:43:01,169 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 19:43:01,172 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 19:43:01,178 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 19:43:01,180 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 19:43:01,182 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 19:43:01,182 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 19:43:01,185 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 19:43:01,187 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 19:43:01,192 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 19:43:01,194 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 19:43:01,195 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 19:43:01,197 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 19:43:01,205 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 19:43:01,208 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 19:43:01,209 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 19:43:01,212 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 19:43:01,214 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 19:43:01,223 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 19:43:01,224 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 19:43:01,224 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 19:43:01,227 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 19:43:01,227 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 19:43:01,229 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 19:43:01,230 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 19:43:01,231 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 19:43:01,233 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 19:43:01,234 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 19:43:01,245 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 19:43:01,245 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 19:43:01,247 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 19:43:01,247 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 19:43:01,247 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 19:43:01,249 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 19:43:01,250 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 19:43:01,255 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d25c488-1336-47ce-8583-3fe6d87e8215/bin/uautomizer-hJ6jxDFKc3/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-15 19:43:01,304 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 19:43:01,304 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 19:43:01,305 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 19:43:01,305 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 19:43:01,307 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 19:43:01,308 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 19:43:01,308 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 19:43:01,308 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 19:43:01,309 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 19:43:01,309 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-15 19:43:01,310 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 19:43:01,310 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 19:43:01,311 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 19:43:01,311 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-15 19:43:01,311 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-15 19:43:01,311 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-15 19:43:01,312 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 19:43:01,312 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-15 19:43:01,312 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-15 19:43:01,312 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-15 19:43:01,313 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 19:43:01,313 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 19:43:01,313 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 19:43:01,313 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 19:43:01,314 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 19:43:01,314 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:43:01,314 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 19:43:01,315 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 19:43:01,315 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-15 19:43:01,315 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-15 19:43:01,315 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 19:43:01,316 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-15 19:43:01,316 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_7d25c488-1336-47ce-8583-3fe6d87e8215/bin/uautomizer-hJ6jxDFKc3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d25c488-1336-47ce-8583-3fe6d87e8215/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e2748dac41bc6cdd06fa5d8793326edbc7d40c79 [2021-10-15 19:43:01,727 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 19:43:01,766 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 19:43:01,769 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 19:43:01,770 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 19:43:01,771 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 19:43:01,772 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d25c488-1336-47ce-8583-3fe6d87e8215/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/list-properties/list_flag-2.i [2021-10-15 19:43:01,849 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d25c488-1336-47ce-8583-3fe6d87e8215/bin/uautomizer-hJ6jxDFKc3/data/db40dd899/2bbbb805a7cb41cdbdbade0f456e4742/FLAG5cff987ee [2021-10-15 19:43:02,562 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 19:43:02,562 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d25c488-1336-47ce-8583-3fe6d87e8215/sv-benchmarks/c/list-properties/list_flag-2.i [2021-10-15 19:43:02,576 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d25c488-1336-47ce-8583-3fe6d87e8215/bin/uautomizer-hJ6jxDFKc3/data/db40dd899/2bbbb805a7cb41cdbdbade0f456e4742/FLAG5cff987ee [2021-10-15 19:43:02,809 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d25c488-1336-47ce-8583-3fe6d87e8215/bin/uautomizer-hJ6jxDFKc3/data/db40dd899/2bbbb805a7cb41cdbdbade0f456e4742 [2021-10-15 19:43:02,811 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 19:43:02,813 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-15 19:43:02,814 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 19:43:02,815 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 19:43:02,819 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 19:43:02,820 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:43:02" (1/1) ... [2021-10-15 19:43:02,821 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79610ddf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:43:02, skipping insertion in model container [2021-10-15 19:43:02,822 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:43:02" (1/1) ... [2021-10-15 19:43:02,830 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 19:43:02,867 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 19:43:03,215 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d25c488-1336-47ce-8583-3fe6d87e8215/sv-benchmarks/c/list-properties/list_flag-2.i[23375,23388] [2021-10-15 19:43:03,220 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:43:03,243 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 19:43:03,298 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d25c488-1336-47ce-8583-3fe6d87e8215/sv-benchmarks/c/list-properties/list_flag-2.i[23375,23388] [2021-10-15 19:43:03,299 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:43:03,337 INFO L208 MainTranslator]: Completed translation [2021-10-15 19:43:03,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:43:03 WrapperNode [2021-10-15 19:43:03,338 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 19:43:03,339 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 19:43:03,339 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 19:43:03,340 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 19:43:03,352 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:43:03" (1/1) ... [2021-10-15 19:43:03,353 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:43:03" (1/1) ... [2021-10-15 19:43:03,371 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:43:03" (1/1) ... [2021-10-15 19:43:03,372 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:43:03" (1/1) ... [2021-10-15 19:43:03,396 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:43:03" (1/1) ... [2021-10-15 19:43:03,401 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:43:03" (1/1) ... [2021-10-15 19:43:03,414 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:43:03" (1/1) ... [2021-10-15 19:43:03,434 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 19:43:03,435 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 19:43:03,435 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 19:43:03,436 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 19:43:03,437 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:43:03" (1/1) ... [2021-10-15 19:43:03,456 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:43:03,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d25c488-1336-47ce-8583-3fe6d87e8215/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:43:03,490 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d25c488-1336-47ce-8583-3fe6d87e8215/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 19:43:03,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d25c488-1336-47ce-8583-3fe6d87e8215/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 19:43:03,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-15 19:43:03,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 19:43:03,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-10-15 19:43:03,543 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-15 19:43:03,543 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-15 19:43:03,543 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-15 19:43:03,546 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-15 19:43:03,546 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-15 19:43:03,546 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-15 19:43:03,547 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-10-15 19:43:03,547 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-15 19:43:03,547 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-15 19:43:03,547 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-15 19:43:03,548 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-15 19:43:03,548 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-15 19:43:03,548 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-15 19:43:03,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 19:43:03,549 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-15 19:43:03,549 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-15 19:43:03,549 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-15 19:43:03,549 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-15 19:43:03,550 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-15 19:43:03,550 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-15 19:43:03,550 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-15 19:43:03,550 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-15 19:43:03,551 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-15 19:43:03,551 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-15 19:43:03,551 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-15 19:43:03,551 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-15 19:43:03,551 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-15 19:43:03,552 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-15 19:43:03,552 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-15 19:43:03,552 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-15 19:43:03,552 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-15 19:43:03,553 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-15 19:43:03,553 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-15 19:43:03,553 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-15 19:43:03,553 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-15 19:43:03,554 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-15 19:43:03,554 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-15 19:43:03,555 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-15 19:43:03,555 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-15 19:43:03,555 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-15 19:43:03,555 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-15 19:43:03,556 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-15 19:43:03,556 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-15 19:43:03,557 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-15 19:43:03,557 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-15 19:43:03,558 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-15 19:43:03,558 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-15 19:43:03,558 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-15 19:43:03,559 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-15 19:43:03,559 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-15 19:43:03,559 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-15 19:43:03,559 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-15 19:43:03,560 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-15 19:43:03,560 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-15 19:43:03,560 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-15 19:43:03,561 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-15 19:43:03,561 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-15 19:43:03,561 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-15 19:43:03,562 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-15 19:43:03,562 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-15 19:43:03,564 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-15 19:43:03,564 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-15 19:43:03,565 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-15 19:43:03,565 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-15 19:43:03,565 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-15 19:43:03,565 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-15 19:43:03,566 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-15 19:43:03,566 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-15 19:43:03,566 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-15 19:43:03,566 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-15 19:43:03,567 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-15 19:43:03,567 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-15 19:43:03,567 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-15 19:43:03,567 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-15 19:43:03,567 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-15 19:43:03,568 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-15 19:43:03,569 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-15 19:43:03,569 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-15 19:43:03,569 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-15 19:43:03,569 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-15 19:43:03,570 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-15 19:43:03,570 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-15 19:43:03,570 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-15 19:43:03,570 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-15 19:43:03,571 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-15 19:43:03,571 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-15 19:43:03,571 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-15 19:43:03,571 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-15 19:43:03,571 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-15 19:43:03,572 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-15 19:43:03,572 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-15 19:43:03,572 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-15 19:43:03,572 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-15 19:43:03,572 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-15 19:43:03,573 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-15 19:43:03,573 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-15 19:43:03,573 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-15 19:43:03,573 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-15 19:43:03,574 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-15 19:43:03,574 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-15 19:43:03,574 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-15 19:43:03,575 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-15 19:43:03,575 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-15 19:43:03,575 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-15 19:43:03,575 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-15 19:43:03,576 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-15 19:43:03,576 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-15 19:43:03,576 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-15 19:43:03,576 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-15 19:43:03,576 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-15 19:43:03,577 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-15 19:43:03,577 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-15 19:43:03,577 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-15 19:43:03,577 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-15 19:43:03,577 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-15 19:43:03,578 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-15 19:43:03,578 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-15 19:43:03,579 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-15 19:43:03,579 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-15 19:43:03,579 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-15 19:43:03,580 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-15 19:43:03,580 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-10-15 19:43:03,583 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-15 19:43:03,583 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-15 19:43:03,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-15 19:43:03,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-15 19:43:03,586 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-15 19:43:03,586 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-15 19:43:03,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-15 19:43:03,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-15 19:43:03,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 19:43:03,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-10-15 19:43:03,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-10-15 19:43:03,594 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-10-15 19:43:03,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-15 19:43:03,976 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-10-15 19:43:04,295 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 19:43:04,297 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-10-15 19:43:04,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:43:04 BoogieIcfgContainer [2021-10-15 19:43:04,301 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 19:43:04,303 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 19:43:04,304 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 19:43:04,307 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 19:43:04,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 07:43:02" (1/3) ... [2021-10-15 19:43:04,308 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48fb0505 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:43:04, skipping insertion in model container [2021-10-15 19:43:04,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:43:03" (2/3) ... [2021-10-15 19:43:04,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48fb0505 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:43:04, skipping insertion in model container [2021-10-15 19:43:04,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:43:04" (3/3) ... [2021-10-15 19:43:04,311 INFO L111 eAbstractionObserver]: Analyzing ICFG list_flag-2.i [2021-10-15 19:43:04,317 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 19:43:04,318 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2021-10-15 19:43:04,384 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 19:43:04,396 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, mConcurrency=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 [2021-10-15 19:43:04,397 INFO L340 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2021-10-15 19:43:04,419 INFO L276 IsEmpty]: Start isEmpty. Operand has 61 states, 32 states have (on average 2.03125) internal successors, (65), 55 states have internal predecessors, (65), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-15 19:43:04,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-15 19:43:04,438 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 19:43:04,439 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:43:04,440 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr8REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 17 more)] === [2021-10-15 19:43:04,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:43:04,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1040661460, now seen corresponding path program 1 times [2021-10-15 19:43:04,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:43:04,463 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1585597084] [2021-10-15 19:43:04,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:43:04,464 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:43:04,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d25c488-1336-47ce-8583-3fe6d87e8215/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:43:04,470 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d25c488-1336-47ce-8583-3fe6d87e8215/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:43:04,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d25c488-1336-47ce-8583-3fe6d87e8215/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-15 19:43:04,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:43:04,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-15 19:43:04,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:43:04,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:43:04,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:43:04,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:43:04,811 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:43:04,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1585597084] [2021-10-15 19:43:04,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1585597084] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:43:04,813 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:43:04,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-15 19:43:04,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016311249] [2021-10-15 19:43:04,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-15 19:43:04,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:43:04,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-15 19:43:04,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-15 19:43:04,844 INFO L87 Difference]: Start difference. First operand has 61 states, 32 states have (on average 2.03125) internal successors, (65), 55 states have internal predecessors, (65), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:43:04,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 19:43:04,872 INFO L93 Difference]: Finished difference Result 61 states and 67 transitions. [2021-10-15 19:43:04,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-15 19:43:04,874 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-10-15 19:43:04,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 19:43:04,885 INFO L225 Difference]: With dead ends: 61 [2021-10-15 19:43:04,885 INFO L226 Difference]: Without dead ends: 54 [2021-10-15 19:43:04,888 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-15 19:43:04,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-10-15 19:43:04,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2021-10-15 19:43:04,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 29 states have (on average 1.896551724137931) internal successors, (55), 50 states have internal predecessors, (55), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:43:04,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2021-10-15 19:43:04,942 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 10 [2021-10-15 19:43:04,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 19:43:04,942 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2021-10-15 19:43:04,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:43:04,943 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2021-10-15 19:43:04,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-15 19:43:04,945 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 19:43:04,946 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:43:04,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d25c488-1336-47ce-8583-3fe6d87e8215/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-15 19:43:05,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d25c488-1336-47ce-8583-3fe6d87e8215/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:43:05,157 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr8REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 17 more)] === [2021-10-15 19:43:05,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:43:05,158 INFO L82 PathProgramCache]: Analyzing trace with hash -1040662421, now seen corresponding path program 1 times [2021-10-15 19:43:05,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:43:05,159 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1193062055] [2021-10-15 19:43:05,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:43:05,159 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:43:05,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d25c488-1336-47ce-8583-3fe6d87e8215/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:43:05,163 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d25c488-1336-47ce-8583-3fe6d87e8215/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:43:05,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d25c488-1336-47ce-8583-3fe6d87e8215/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-15 19:43:05,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:43:05,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-15 19:43:05,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:43:05,379 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 [2021-10-15 19:43:05,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:43:05,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:43:05,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:43:05,543 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:43:05,544 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1193062055] [2021-10-15 19:43:05,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1193062055] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:43:05,544 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:43:05,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-15 19:43:05,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383503628] [2021-10-15 19:43:05,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 19:43:05,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:43:05,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 19:43:05,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-15 19:43:05,551 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:43:05,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 19:43:05,838 INFO L93 Difference]: Finished difference Result 61 states and 67 transitions. [2021-10-15 19:43:05,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 19:43:05,839 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-10-15 19:43:05,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 19:43:05,842 INFO L225 Difference]: With dead ends: 61 [2021-10-15 19:43:05,842 INFO L226 Difference]: Without dead ends: 61 [2021-10-15 19:43:05,843 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-15 19:43:05,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-10-15 19:43:05,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 56. [2021-10-15 19:43:05,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 36 states have (on average 1.7777777777777777) internal successors, (64), 52 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:43:05,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 67 transitions. [2021-10-15 19:43:05,855 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 67 transitions. Word has length 10 [2021-10-15 19:43:05,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 19:43:05,855 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 67 transitions. [2021-10-15 19:43:05,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:43:05,856 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 67 transitions. [2021-10-15 19:43:05,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-15 19:43:05,856 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 19:43:05,856 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:43:05,874 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d25c488-1336-47ce-8583-3fe6d87e8215/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-15 19:43:06,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d25c488-1336-47ce-8583-3fe6d87e8215/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:43:06,068 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr9REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 17 more)] === [2021-10-15 19:43:06,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:43:06,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1040662420, now seen corresponding path program 1 times [2021-10-15 19:43:06,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:43:06,070 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1516333768] [2021-10-15 19:43:06,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:43:06,070 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:43:06,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d25c488-1336-47ce-8583-3fe6d87e8215/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:43:06,077 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d25c488-1336-47ce-8583-3fe6d87e8215/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:43:06,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d25c488-1336-47ce-8583-3fe6d87e8215/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-15 19:43:06,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:43:06,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-15 19:43:06,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:43:06,306 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 [2021-10-15 19:43:06,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:43:06,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:43:06,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:43:06,626 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:43:06,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1516333768] [2021-10-15 19:43:06,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1516333768] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:43:06,627 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:43:06,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-15 19:43:06,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561363986] [2021-10-15 19:43:06,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-15 19:43:06,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:43:06,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-15 19:43:06,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-15 19:43:06,629 INFO L87 Difference]: Start difference. First operand 56 states and 67 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:43:07,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 19:43:07,107 INFO L93 Difference]: Finished difference Result 73 states and 80 transitions. [2021-10-15 19:43:07,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-15 19:43:07,109 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-10-15 19:43:07,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 19:43:07,110 INFO L225 Difference]: With dead ends: 73 [2021-10-15 19:43:07,110 INFO L226 Difference]: Without dead ends: 73 [2021-10-15 19:43:07,111 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 177.4ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-15 19:43:07,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-10-15 19:43:07,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 63. [2021-10-15 19:43:07,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 44 states have (on average 1.5454545454545454) internal successors, (68), 59 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:43:07,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 71 transitions. [2021-10-15 19:43:07,118 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 71 transitions. Word has length 10 [2021-10-15 19:43:07,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 19:43:07,119 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 71 transitions. [2021-10-15 19:43:07,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-15 19:43:07,119 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 71 transitions. [2021-10-15 19:43:07,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-15 19:43:07,120 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 19:43:07,120 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:43:07,140 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d25c488-1336-47ce-8583-3fe6d87e8215/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-15 19:43:07,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d25c488-1336-47ce-8583-3fe6d87e8215/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:43:07,332 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr21ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 17 more)] === [2021-10-15 19:43:07,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:43:07,333 INFO L82 PathProgramCache]: Analyzing trace with hash 1562517626, now seen corresponding path program 1 times [2021-10-15 19:43:07,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:43:07,336 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1107969881] [2021-10-15 19:43:07,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:43:07,337 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:43:07,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d25c488-1336-47ce-8583-3fe6d87e8215/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:43:07,338 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d25c488-1336-47ce-8583-3fe6d87e8215/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:43:07,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d25c488-1336-47ce-8583-3fe6d87e8215/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-15 19:43:07,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:43:07,496 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 19:43:07,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:43:07,572 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-15 19:43:07,572 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-15 19:43:07,573 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr21ENSURES_VIOLATIONMEMORY_LEAK [2021-10-15 19:43:07,575 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-10-15 19:43:07,575 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-10-15 19:43:07,575 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-10-15 19:43:07,576 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-10-15 19:43:07,576 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-10-15 19:43:07,576 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-10-15 19:43:07,576 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-10-15 19:43:07,576 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-10-15 19:43:07,577 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-10-15 19:43:07,577 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-10-15 19:43:07,577 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION [2021-10-15 19:43:07,577 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION [2021-10-15 19:43:07,578 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION [2021-10-15 19:43:07,578 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-10-15 19:43:07,578 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION [2021-10-15 19:43:07,578 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION [2021-10-15 19:43:07,579 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION [2021-10-15 19:43:07,579 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION [2021-10-15 19:43:07,579 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION [2021-10-15 19:43:07,579 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION [2021-10-15 19:43:07,580 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20ASSERT_VIOLATIONMEMORY_LEAK [2021-10-15 19:43:07,613 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d25c488-1336-47ce-8583-3fe6d87e8215/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-15 19:43:07,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d25c488-1336-47ce-8583-3fe6d87e8215/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:43:07,814 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 19:43:07,823 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-10-15 19:43:07,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 07:43:07 BoogieIcfgContainer [2021-10-15 19:43:07,838 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 19:43:07,839 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 19:43:07,839 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 19:43:07,839 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 19:43:07,840 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:43:04" (3/4) ... [2021-10-15 19:43:07,844 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-15 19:43:07,844 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 19:43:07,846 INFO L168 Benchmark]: Toolchain (without parser) took 5031.80 ms. Allocated memory was 69.2 MB in the beginning and 96.5 MB in the end (delta: 27.3 MB). Free memory was 52.5 MB in the beginning and 74.5 MB in the end (delta: -22.0 MB). Peak memory consumption was 3.6 MB. Max. memory is 16.1 GB. [2021-10-15 19:43:07,852 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 69.2 MB. Free memory was 50.5 MB in the beginning and 50.4 MB in the end (delta: 60.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:43:07,854 INFO L168 Benchmark]: CACSL2BoogieTranslator took 524.13 ms. Allocated memory is still 69.2 MB. Free memory was 52.3 MB in the beginning and 46.0 MB in the end (delta: 6.3 MB). Peak memory consumption was 11.2 MB. Max. memory is 16.1 GB. [2021-10-15 19:43:07,855 INFO L168 Benchmark]: Boogie Preprocessor took 95.17 ms. Allocated memory is still 69.2 MB. Free memory was 46.0 MB in the beginning and 42.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-15 19:43:07,857 INFO L168 Benchmark]: RCFGBuilder took 866.15 ms. Allocated memory is still 69.2 MB. Free memory was 42.9 MB in the beginning and 41.9 MB in the end (delta: 1.0 MB). Peak memory consumption was 19.8 MB. Max. memory is 16.1 GB. [2021-10-15 19:43:07,857 INFO L168 Benchmark]: TraceAbstraction took 3535.34 ms. Allocated memory was 69.2 MB in the beginning and 96.5 MB in the end (delta: 27.3 MB). Free memory was 41.3 MB in the beginning and 74.5 MB in the end (delta: -33.2 MB). Peak memory consumption was 29.2 MB. Max. memory is 16.1 GB. [2021-10-15 19:43:07,858 INFO L168 Benchmark]: Witness Printer took 5.32 ms. Allocated memory is still 96.5 MB. Free memory is still 74.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:43:07,863 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 69.2 MB. Free memory was 50.5 MB in the beginning and 50.4 MB in the end (delta: 60.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 524.13 ms. Allocated memory is still 69.2 MB. Free memory was 52.3 MB in the beginning and 46.0 MB in the end (delta: 6.3 MB). Peak memory consumption was 11.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 95.17 ms. Allocated memory is still 69.2 MB. Free memory was 46.0 MB in the beginning and 42.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 866.15 ms. Allocated memory is still 69.2 MB. Free memory was 42.9 MB in the beginning and 41.9 MB in the end (delta: 1.0 MB). Peak memory consumption was 19.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3535.34 ms. Allocated memory was 69.2 MB in the beginning and 96.5 MB in the end (delta: 27.3 MB). Free memory was 41.3 MB in the beginning and 74.5 MB in the end (delta: -33.2 MB). Peak memory consumption was 29.2 MB. Max. memory is 16.1 GB. * Witness Printer took 5.32 ms. Allocated memory is still 96.5 MB. Free memory is still 74.5 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: 531]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 531. Possible FailurePath: [L532] int flag = __VERIFIER_nondet_int(); [L533] List p, a, t; [L534] a = (List) malloc(sizeof(struct node)) [L535] COND FALSE !(a == 0) VAL [a={1:0}, flag=2147483648] [L536] p = a VAL [a={1:0}, flag=2147483648, p={1:0}] [L537] COND FALSE !(__VERIFIER_nondet_int()) [L548] p->h = 3 VAL [a={1:0}, flag=2147483648, p={1:0}] [L549] p = a VAL [a={1:0}, flag=2147483648, p={1:0}] [L550] COND TRUE \read(flag) VAL [a={1:0}, flag=2147483648, p={1:0}] [L551] EXPR p->h VAL [a={1:0}, flag=2147483648, p={1:0}, p->h=3] [L551] COND FALSE !(p->h == 1) [L556] EXPR p->h VAL [a={1:0}, flag=2147483648, p={1:0}, p->h=3] [L556] COND FALSE !(p->h != 3) - UnprovableResult [Line: 539]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 539]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 545]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 545]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 546]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 546]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 556]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 556]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 557]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 86 locations, 22 error locations. Started 1 CEGAR loops. OverallTime: 3430.3ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 27.3ms, AutomataDifference: 841.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 17.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 119 SDtfs, 222 SDslu, 37 SDs, 0 SdLazy, 103 SolverSat, 43 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 535.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 207.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=63occurred in iteration=3, InterpolantAutomatonStates: 11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 54.9ms AutomataMinimizationTime, 3 MinimizatonAttempts, 15 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 43.9ms SsaConstructionTime, 105.7ms SatisfiabilityAnalysisTime, 765.4ms InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 206 SizeOfPredicates, 3 NumberOfNonLiveVariables, 186 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 [2021-10-15 19:43:07,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d25c488-1336-47ce-8583-3fe6d87e8215/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...