./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test13_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test13_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg --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 c20063fdafbef5c00ec1f1fcfed63f5b6ab29c7a5ae9bd5cc27a6dcf474b9797 ................................................................................................................................... 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_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test13_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg --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 c20063fdafbef5c00ec1f1fcfed63f5b6ab29c7a5ae9bd5cc27a6dcf474b9797 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:54:56,803 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:54:56,805 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:54:56,842 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:54:56,842 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:54:56,844 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:54:56,846 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:54:56,849 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:54:56,851 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:54:56,853 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:54:56,854 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:54:56,856 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:54:56,856 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:54:56,858 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:54:56,860 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:54:56,862 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:54:56,863 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:54:56,864 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:54:56,867 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:54:56,870 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:54:56,873 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:54:56,875 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:54:56,876 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:54:56,878 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:54:56,882 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:54:56,882 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:54:56,883 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:54:56,884 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:54:56,885 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:54:56,886 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:54:56,887 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:54:56,888 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:54:56,889 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:54:56,890 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:54:56,891 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:54:56,892 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:54:56,892 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:54:56,893 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:54:56,893 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:54:56,895 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:54:56,895 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:54:56,896 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-28 09:54:56,930 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:54:56,932 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:54:56,932 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:54:56,933 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:54:56,940 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:54:56,940 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:54:56,940 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:54:56,940 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:54:56,941 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:54:56,941 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 09:54:56,941 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:54:56,941 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:54:56,941 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:54:56,941 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 09:54:56,942 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 09:54:56,942 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 09:54:56,942 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:54:56,942 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 09:54:56,942 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:54:56,943 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:54:56,943 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:54:56,943 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:54:56,943 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:54:56,943 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:54:56,944 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:54:56,944 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:54:56,944 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:54:56,944 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 09:54:56,945 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:54:56,945 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_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c20063fdafbef5c00ec1f1fcfed63f5b6ab29c7a5ae9bd5cc27a6dcf474b9797 [2021-10-28 09:54:57,190 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:54:57,212 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:54:57,214 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:54:57,216 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:54:57,216 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:54:57,218 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/ldv-memsafety/memleaks_test13_1.i [2021-10-28 09:54:57,286 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/data/6cd7f5e20/f29f4170fadd43f38736d97cbe1d1ea6/FLAG8036b7479 [2021-10-28 09:54:57,884 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:54:57,885 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/sv-benchmarks/c/ldv-memsafety/memleaks_test13_1.i [2021-10-28 09:54:57,906 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/data/6cd7f5e20/f29f4170fadd43f38736d97cbe1d1ea6/FLAG8036b7479 [2021-10-28 09:54:58,179 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/data/6cd7f5e20/f29f4170fadd43f38736d97cbe1d1ea6 [2021-10-28 09:54:58,182 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:54:58,184 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 09:54:58,185 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:54:58,186 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:54:58,189 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:54:58,190 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:54:58" (1/1) ... [2021-10-28 09:54:58,191 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63abc57b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:54:58, skipping insertion in model container [2021-10-28 09:54:58,191 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:54:58" (1/1) ... [2021-10-28 09:54:58,198 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:54:58,250 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:54:58,717 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:54:58,738 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-10-28 09:54:58,739 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@79afe7c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:54:58, skipping insertion in model container [2021-10-28 09:54:58,739 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:54:58,739 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-10-28 09:54:58,741 INFO L168 Benchmark]: Toolchain (without parser) took 556.53 ms. Allocated memory is still 111.1 MB. Free memory was 79.4 MB in the beginning and 85.0 MB in the end (delta: -5.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:54:58,742 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 111.1 MB. Free memory is still 66.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:54:58,743 INFO L168 Benchmark]: CACSL2BoogieTranslator took 553.92 ms. Allocated memory is still 111.1 MB. Free memory was 79.1 MB in the beginning and 85.0 MB in the end (delta: -5.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:54:58,744 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 111.1 MB. Free memory is still 66.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 553.92 ms. Allocated memory is still 111.1 MB. Free memory was 79.1 MB in the beginning and 85.0 MB in the end (delta: -5.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:55:00,950 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:55:00,953 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:55:00,995 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:55:00,996 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:55:01,000 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:55:01,002 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:55:01,011 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:55:01,012 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:55:01,013 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:55:01,014 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:55:01,016 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:55:01,016 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:55:01,017 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:55:01,019 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:55:01,020 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:55:01,021 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:55:01,022 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:55:01,024 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:55:01,026 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:55:01,028 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:55:01,029 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:55:01,031 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:55:01,032 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:55:01,035 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:55:01,036 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:55:01,036 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:55:01,037 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:55:01,038 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:55:01,039 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:55:01,039 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:55:01,040 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:55:01,041 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:55:01,042 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:55:01,043 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:55:01,044 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:55:01,044 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:55:01,045 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:55:01,045 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:55:01,046 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:55:01,047 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:55:01,051 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-28 09:55:01,097 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:55:01,097 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:55:01,098 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:55:01,098 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:55:01,100 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:55:01,101 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:55:01,101 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:55:01,101 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:55:01,101 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:55:01,102 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 09:55:01,103 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:55:01,103 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:55:01,103 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:55:01,103 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 09:55:01,104 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 09:55:01,104 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 09:55:01,104 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:55:01,104 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 09:55:01,105 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-28 09:55:01,105 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-28 09:55:01,105 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:55:01,105 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:55:01,106 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:55:01,106 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:55:01,106 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:55:01,106 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:55:01,107 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:55:01,107 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:55:01,107 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-28 09:55:01,107 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-28 09:55:01,108 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:55:01,108 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-28 09:55:01,108 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_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c20063fdafbef5c00ec1f1fcfed63f5b6ab29c7a5ae9bd5cc27a6dcf474b9797 [2021-10-28 09:55:01,466 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:55:01,486 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:55:01,489 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:55:01,490 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:55:01,494 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:55:01,495 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/ldv-memsafety/memleaks_test13_1.i [2021-10-28 09:55:01,566 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/data/baf60b799/0c94a78d58ef4455a56b1a4010845ac1/FLAG0fedf4df5 [2021-10-28 09:55:02,304 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:55:02,304 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/sv-benchmarks/c/ldv-memsafety/memleaks_test13_1.i [2021-10-28 09:55:02,332 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/data/baf60b799/0c94a78d58ef4455a56b1a4010845ac1/FLAG0fedf4df5 [2021-10-28 09:55:02,494 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/data/baf60b799/0c94a78d58ef4455a56b1a4010845ac1 [2021-10-28 09:55:02,504 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:55:02,506 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 09:55:02,507 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:55:02,508 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:55:02,511 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:55:02,512 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:55:02" (1/1) ... [2021-10-28 09:55:02,513 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@164a2061 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:55:02, skipping insertion in model container [2021-10-28 09:55:02,513 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:55:02" (1/1) ... [2021-10-28 09:55:02,521 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:55:02,590 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:55:02,950 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:55:02,970 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-28 09:55:02,978 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:55:03,052 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:55:03,076 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:55:03,151 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:55:03,225 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:55:03,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:55:03 WrapperNode [2021-10-28 09:55:03,225 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:55:03,227 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:55:03,228 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:55:03,228 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:55:03,239 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:55:03" (1/1) ... [2021-10-28 09:55:03,240 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:55:03" (1/1) ... [2021-10-28 09:55:03,270 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:55:03" (1/1) ... [2021-10-28 09:55:03,271 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:55:03" (1/1) ... [2021-10-28 09:55:03,302 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:55:03" (1/1) ... [2021-10-28 09:55:03,307 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:55:03" (1/1) ... [2021-10-28 09:55:03,314 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:55:03" (1/1) ... [2021-10-28 09:55:03,324 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:55:03,325 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:55:03,326 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:55:03,326 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:55:03,327 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:55:03" (1/1) ... [2021-10-28 09:55:03,346 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:55:03,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:55:03,370 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:55:03,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:55:03,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 09:55:03,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:55:03,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-10-28 09:55:03,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-10-28 09:55:03,410 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-28 09:55:03,412 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-28 09:55:03,413 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-28 09:55:03,413 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-28 09:55:03,413 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-28 09:55:03,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive [2021-10-28 09:55:03,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_positive [2021-10-28 09:55:03,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-10-28 09:55:03,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-10-28 09:55:03,414 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2021-10-28 09:55:03,414 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2021-10-28 09:55:03,415 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2021-10-28 09:55:03,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2021-10-28 09:55:03,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2021-10-28 09:55:03,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2021-10-28 09:55:03,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_alloc [2021-10-28 09:55:03,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_fill [2021-10-28 09:55:03,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_free [2021-10-28 09:55:03,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_msg [2021-10-28 09:55:03,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_destroy_msgs [2021-10-28 09:55:03,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2021-10-28 09:55:03,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-10-28 09:55:03,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_add_return [2021-10-28 09:55:03,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_sub_return [2021-10-28 09:55:03,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_sub [2021-10-28 09:55:03,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_init [2021-10-28 09:55:03,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_get [2021-10-28 09:55:03,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put [2021-10-28 09:55:03,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_del [2021-10-28 09:55:03,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_cleanup [2021-10-28 09:55:03,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_release [2021-10-28 09:55:03,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_put [2021-10-28 09:55:03,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_get [2021-10-28 09:55:03,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init_internal [2021-10-28 09:55:03,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init [2021-10-28 09:55:03,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_create [2021-10-28 09:55:03,422 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-10-28 09:55:03,422 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2021-10-28 09:55:03,422 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_13 [2021-10-28 09:55:03,422 INFO L138 BoogieDeclarations]: Found implementation of procedure entry_point [2021-10-28 09:55:03,423 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 09:55:03,423 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-10-28 09:55:03,423 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-10-28 09:55:03,424 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-10-28 09:55:03,424 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-28 09:55:03,425 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-28 09:55:03,425 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-28 09:55:03,425 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-28 09:55:03,425 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-28 09:55:03,425 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-28 09:55:03,425 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-28 09:55:03,426 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-28 09:55:03,426 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-28 09:55:03,426 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-28 09:55:03,427 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-28 09:55:03,427 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-28 09:55:03,427 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-28 09:55:03,428 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-28 09:55:03,429 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-28 09:55:03,429 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-28 09:55:03,430 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-28 09:55:03,431 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-28 09:55:03,431 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-28 09:55:03,431 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-28 09:55:03,431 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-28 09:55:03,432 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-28 09:55:03,432 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-28 09:55:03,432 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-28 09:55:03,432 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-28 09:55:03,433 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-28 09:55:03,433 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-28 09:55:03,433 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-28 09:55:03,433 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-28 09:55:03,433 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-28 09:55:03,434 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-28 09:55:03,434 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-28 09:55:03,435 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-28 09:55:03,435 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-28 09:55:03,435 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-28 09:55:03,435 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-28 09:55:03,435 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-28 09:55:03,435 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-28 09:55:03,436 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-28 09:55:03,436 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-28 09:55:03,436 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-28 09:55:03,437 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-28 09:55:03,437 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-28 09:55:03,437 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-28 09:55:03,437 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-28 09:55:03,437 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-28 09:55:03,438 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-28 09:55:03,438 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-28 09:55:03,438 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-28 09:55:03,438 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-28 09:55:03,438 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-28 09:55:03,438 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-28 09:55:03,439 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-28 09:55:03,439 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-28 09:55:03,439 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-28 09:55:03,439 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-28 09:55:03,439 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-28 09:55:03,440 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-28 09:55:03,440 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-28 09:55:03,440 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-28 09:55:03,440 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-28 09:55:03,440 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-28 09:55:03,441 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-28 09:55:03,441 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 09:55:03,441 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-28 09:55:03,441 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-28 09:55:03,441 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-28 09:55:03,441 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-28 09:55:03,441 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-28 09:55:03,442 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-28 09:55:03,442 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-28 09:55:03,442 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-28 09:55:03,442 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-28 09:55:03,443 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-28 09:55:03,443 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-28 09:55:03,444 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-28 09:55:03,447 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-28 09:55:03,447 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-28 09:55:03,447 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-28 09:55:03,448 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-28 09:55:03,448 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-28 09:55:03,450 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-28 09:55:03,450 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-28 09:55:03,450 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-28 09:55:03,451 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-28 09:55:03,456 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-28 09:55:03,457 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-28 09:55:03,457 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-28 09:55:03,457 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-28 09:55:03,457 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-28 09:55:03,457 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-28 09:55:03,457 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-28 09:55:03,458 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-28 09:55:03,458 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-28 09:55:03,458 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-28 09:55:03,458 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-28 09:55:03,458 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-28 09:55:03,458 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-28 09:55:03,458 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-28 09:55:03,459 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-28 09:55:03,459 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-28 09:55:03,459 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-28 09:55:03,459 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-28 09:55:03,459 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-28 09:55:03,459 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-28 09:55:03,459 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-28 09:55:03,460 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-28 09:55:03,460 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-10-28 09:55:03,460 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-28 09:55:03,460 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonpositive [2021-10-28 09:55:03,460 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_positive [2021-10-28 09:55:03,460 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-10-28 09:55:03,461 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-10-28 09:55:03,461 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-10-28 09:55:03,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 09:55:03,461 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-10-28 09:55:03,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-10-28 09:55:03,461 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2021-10-28 09:55:03,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 09:55:03,462 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2021-10-28 09:55:03,462 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2021-10-28 09:55:03,462 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2021-10-28 09:55:03,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 09:55:03,463 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2021-10-28 09:55:03,463 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2021-10-28 09:55:03,463 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_alloc [2021-10-28 09:55:03,463 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_fill [2021-10-28 09:55:03,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-10-28 09:55:03,464 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_free [2021-10-28 09:55:03,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 09:55:03,464 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_msg [2021-10-28 09:55:03,464 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_destroy_msgs [2021-10-28 09:55:03,464 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2021-10-28 09:55:03,464 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-10-28 09:55:03,465 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_add_return [2021-10-28 09:55:03,465 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-28 09:55:03,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-28 09:55:03,465 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_sub_return [2021-10-28 09:55:03,465 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_sub [2021-10-28 09:55:03,465 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-10-28 09:55:03,465 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_init [2021-10-28 09:55:03,466 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_get [2021-10-28 09:55:03,466 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put [2021-10-28 09:55:03,466 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_del [2021-10-28 09:55:03,466 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_cleanup [2021-10-28 09:55:03,466 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_release [2021-10-28 09:55:03,466 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_put [2021-10-28 09:55:03,466 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_get [2021-10-28 09:55:03,467 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init_internal [2021-10-28 09:55:03,467 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init [2021-10-28 09:55:03,467 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_create [2021-10-28 09:55:03,467 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-10-28 09:55:03,467 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-10-28 09:55:03,467 INFO L130 BoogieDeclarations]: Found specification of procedure g [2021-10-28 09:55:03,468 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_13 [2021-10-28 09:55:03,468 INFO L130 BoogieDeclarations]: Found specification of procedure entry_point [2021-10-28 09:55:03,468 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 09:55:03,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 09:55:03,468 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:55:03,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-28 09:55:03,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:55:03,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-10-28 09:55:03,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-10-28 09:55:03,469 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-10-28 09:55:03,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-10-28 09:55:03,469 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-10-28 09:55:04,143 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-28 09:55:04,507 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-28 09:55:04,851 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:55:04,851 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-10-28 09:55:04,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:55:04 BoogieIcfgContainer [2021-10-28 09:55:04,856 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:55:04,858 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:55:04,859 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:55:04,861 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:55:04,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:55:02" (1/3) ... [2021-10-28 09:55:04,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d9f8f49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:55:04, skipping insertion in model container [2021-10-28 09:55:04,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:55:03" (2/3) ... [2021-10-28 09:55:04,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d9f8f49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:55:04, skipping insertion in model container [2021-10-28 09:55:04,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:55:04" (3/3) ... [2021-10-28 09:55:04,866 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test13_1.i [2021-10-28 09:55:04,871 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:55:04,871 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 71 error locations. [2021-10-28 09:55:04,931 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:55:04,937 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 09:55:04,937 INFO L340 AbstractCegarLoop]: Starting to check reachability of 71 error locations. [2021-10-28 09:55:04,955 INFO L276 IsEmpty]: Start isEmpty. Operand has 124 states, 65 states have (on average 1.5384615384615385) internal successors, (100), 94 states have internal predecessors, (100), 15 states have call successors, (15), 13 states have call predecessors, (15), 13 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-10-28 09:55:04,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 09:55:04,963 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:55:04,963 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:55:04,964 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_list_addErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-28 09:55:04,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:55:04,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1239054828, now seen corresponding path program 1 times [2021-10-28 09:55:04,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:55:04,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [184513850] [2021-10-28 09:55:04,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:55:04,982 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:55:04,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:55:04,986 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:55:04,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-28 09:55:05,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:55:05,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-28 09:55:05,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:55:05,330 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-10-28 09:55:05,331 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 26 [2021-10-28 09:55:05,528 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-10-28 09:55:05,613 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-28 09:55:05,613 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 20 [2021-10-28 09:55:05,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:55:05,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:55:05,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:55:05,929 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:55:05,930 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [184513850] [2021-10-28 09:55:05,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [184513850] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:55:05,936 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:55:05,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [] total 7 [2021-10-28 09:55:05,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222025628] [2021-10-28 09:55:05,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:55:05,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:55:05,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:55:05,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:55:05,964 INFO L87 Difference]: Start difference. First operand has 124 states, 65 states have (on average 1.5384615384615385) internal successors, (100), 94 states have internal predecessors, (100), 15 states have call successors, (15), 13 states have call predecessors, (15), 13 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-28 09:55:06,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:55:06,454 INFO L93 Difference]: Finished difference Result 67 states and 71 transitions. [2021-10-28 09:55:06,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:55:06,455 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 17 [2021-10-28 09:55:06,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:55:06,463 INFO L225 Difference]: With dead ends: 67 [2021-10-28 09:55:06,463 INFO L226 Difference]: Without dead ends: 61 [2021-10-28 09:55:06,465 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 19 SyntacticMatches, 8 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:55:06,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-10-28 09:55:06,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-10-28 09:55:06,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 44 states have internal predecessors, (44), 10 states have call successors, (10), 8 states have call predecessors, (10), 9 states have return successors, (10), 10 states have call predecessors, (10), 8 states have call successors, (10) [2021-10-28 09:55:06,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 64 transitions. [2021-10-28 09:55:06,504 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 64 transitions. Word has length 17 [2021-10-28 09:55:06,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:55:06,504 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 64 transitions. [2021-10-28 09:55:06,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-28 09:55:06,505 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 64 transitions. [2021-10-28 09:55:06,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 09:55:06,506 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:55:06,506 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:55:06,530 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-28 09:55:06,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:55:06,726 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_list_addErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-28 09:55:06,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:55:06,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1239054827, now seen corresponding path program 1 times [2021-10-28 09:55:06,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:55:06,728 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [816281302] [2021-10-28 09:55:06,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:55:06,728 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:55:06,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:55:06,730 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:55:06,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-28 09:55:06,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:55:06,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-28 09:55:06,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:55:06,984 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-10-28 09:55:06,985 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 35 [2021-10-28 09:55:07,004 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-28 09:55:07,004 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 1 case distinctions, treesize of input 35 treesize of output 36 [2021-10-28 09:55:07,631 INFO L354 Elim1Store]: treesize reduction 2, result has 92.0 percent of original size [2021-10-28 09:55:07,631 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 56 [2021-10-28 09:55:07,648 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-28 09:55:07,649 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 52 [2021-10-28 09:55:09,986 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-10-28 09:55:09,986 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 61 [2021-10-28 09:55:10,062 INFO L354 Elim1Store]: treesize reduction 18, result has 63.3 percent of original size [2021-10-28 09:55:10,062 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 72 [2021-10-28 09:55:10,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:55:10,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:55:17,878 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((|v_ldv_malloc_#res.base_9| (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (select |c_old(#valid)| |v_ldv_malloc_#res.base_9|))) (or (not (bvule |c_~#global_list_13~0.offset| (bvadd (_ bv4 32) |c_~#global_list_13~0.offset|))) (exists ((v_ldv_malloc_~size_9 (_ BitVec 32))) (not (bvule (bvadd (_ bv4 32) |c_~#global_list_13~0.offset|) (select (store |c_old(#length)| |v_ldv_malloc_#res.base_9| v_ldv_malloc_~size_9) |c_~#global_list_13~0.base|))))))) (forall ((|v_ldv_malloc_#res.base_10| (_ BitVec 32))) (or (and (forall ((ldv_malloc_~size (_ BitVec 32))) (bvule (bvadd (_ bv4 32) |c_~#global_list_13~0.offset|) (select (store |c_#length| |v_ldv_malloc_#res.base_10| ldv_malloc_~size) |c_~#global_list_13~0.base|))) (bvule |c_~#global_list_13~0.offset| (bvadd (_ bv4 32) |c_~#global_list_13~0.offset|))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select |c_#valid| |v_ldv_malloc_#res.base_10|))))))))) is different from true [2021-10-28 09:55:22,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:55:22,595 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:55:22,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [816281302] [2021-10-28 09:55:22,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [816281302] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:55:22,595 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:55:22,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-28 09:55:22,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745464461] [2021-10-28 09:55:22,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-28 09:55:22,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:55:22,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 09:55:22,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=122, Unknown=3, NotChecked=22, Total=182 [2021-10-28 09:55:22,599 INFO L87 Difference]: Start difference. First operand 61 states and 64 transitions. Second operand has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 11 states have internal predecessors, (18), 5 states have call successors, (11), 7 states have call predecessors, (11), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-10-28 09:56:13,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:56:13,870 INFO L93 Difference]: Finished difference Result 60 states and 63 transitions. [2021-10-28 09:56:13,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:56:13,872 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 11 states have internal predecessors, (18), 5 states have call successors, (11), 7 states have call predecessors, (11), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 17 [2021-10-28 09:56:13,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:56:13,873 INFO L225 Difference]: With dead ends: 60 [2021-10-28 09:56:13,874 INFO L226 Difference]: Without dead ends: 60 [2021-10-28 09:56:13,875 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 16 SyntacticMatches, 5 SemanticMatches, 17 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 15.1s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=4, NotChecked=32, Total=342 [2021-10-28 09:56:13,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-10-28 09:56:13,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2021-10-28 09:56:13,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 28 states have (on average 1.5357142857142858) internal successors, (43), 43 states have internal predecessors, (43), 10 states have call successors, (10), 8 states have call predecessors, (10), 9 states have return successors, (10), 10 states have call predecessors, (10), 8 states have call successors, (10) [2021-10-28 09:56:13,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2021-10-28 09:56:13,884 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 17 [2021-10-28 09:56:13,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:56:13,884 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2021-10-28 09:56:13,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 11 states have internal predecessors, (18), 5 states have call successors, (11), 7 states have call predecessors, (11), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-10-28 09:56:13,885 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2021-10-28 09:56:13,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-28 09:56:13,886 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:56:13,886 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:56:13,900 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-28 09:56:14,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:56:14,097 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __ldv_list_addErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-28 09:56:14,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:56:14,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1733078590, now seen corresponding path program 1 times [2021-10-28 09:56:14,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:56:14,098 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [628975300] [2021-10-28 09:56:14,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:56:14,099 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:56:14,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:56:14,100 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:56:14,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-28 09:56:14,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:56:14,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-28 09:56:14,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:56:14,480 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2021-10-28 09:56:14,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:56:14,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:56:14,630 INFO L354 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2021-10-28 09:56:14,630 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-10-28 09:56:14,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:56:14,732 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:56:14,732 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [628975300] [2021-10-28 09:56:14,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [628975300] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:56:14,732 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:56:14,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-10-28 09:56:14,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236907108] [2021-10-28 09:56:14,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:56:14,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:56:14,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:56:14,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:56:14,734 INFO L87 Difference]: Start difference. First operand 60 states and 63 transitions. Second operand has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-28 09:56:15,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:56:15,297 INFO L93 Difference]: Finished difference Result 78 states and 80 transitions. [2021-10-28 09:56:15,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:56:15,298 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 20 [2021-10-28 09:56:15,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:56:15,300 INFO L225 Difference]: With dead ends: 78 [2021-10-28 09:56:15,300 INFO L226 Difference]: Without dead ends: 78 [2021-10-28 09:56:15,300 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-10-28 09:56:15,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-10-28 09:56:15,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 59. [2021-10-28 09:56:15,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 28 states have (on average 1.5) internal successors, (42), 42 states have internal predecessors, (42), 10 states have call successors, (10), 8 states have call predecessors, (10), 9 states have return successors, (10), 10 states have call predecessors, (10), 8 states have call successors, (10) [2021-10-28 09:56:15,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 62 transitions. [2021-10-28 09:56:15,309 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 62 transitions. Word has length 20 [2021-10-28 09:56:15,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:56:15,310 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 62 transitions. [2021-10-28 09:56:15,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-28 09:56:15,310 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 62 transitions. [2021-10-28 09:56:15,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-28 09:56:15,311 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:56:15,311 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:56:15,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-28 09:56:15,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:56:15,523 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __ldv_list_addErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-28 09:56:15,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:56:15,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1733078589, now seen corresponding path program 1 times [2021-10-28 09:56:15,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:56:15,524 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [143877653] [2021-10-28 09:56:15,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:56:15,524 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:56:15,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:56:15,525 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:56:15,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-28 09:56:15,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:56:15,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 50 conjunts are in the unsatisfiable core [2021-10-28 09:56:15,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:56:15,801 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-28 09:56:15,802 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 1 case distinctions, treesize of input 22 treesize of output 23 [2021-10-28 09:56:15,880 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-10-28 09:56:15,881 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 36 [2021-10-28 09:56:16,682 INFO L354 Elim1Store]: treesize reduction 2, result has 92.0 percent of original size [2021-10-28 09:56:16,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 54 [2021-10-28 09:56:16,696 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-28 09:56:16,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 45 [2021-10-28 09:56:19,107 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-10-28 09:56:19,107 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 60 [2021-10-28 09:56:19,174 INFO L354 Elim1Store]: treesize reduction 18, result has 63.3 percent of original size [2021-10-28 09:56:19,175 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 71 [2021-10-28 09:56:19,521 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 26 [2021-10-28 09:56:19,526 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2021-10-28 09:56:19,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:56:19,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:56:34,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:56:34,463 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:56:34,463 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [143877653] [2021-10-28 09:56:34,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [143877653] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:56:34,463 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:56:34,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 19 [2021-10-28 09:56:34,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99402843] [2021-10-28 09:56:34,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-28 09:56:34,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:56:34,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-28 09:56:34,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=323, Unknown=4, NotChecked=0, Total=380 [2021-10-28 09:56:34,466 INFO L87 Difference]: Start difference. First operand 59 states and 62 transitions. Second operand has 20 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 15 states have internal predecessors, (22), 7 states have call successors, (13), 9 states have call predecessors, (13), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-10-28 09:57:27,027 WARN L207 SmtUtils]: Spent 12.39 s on a formula simplification that was a NOOP. DAG size: 67 [2021-10-28 09:58:14,059 WARN L207 SmtUtils]: Spent 12.47 s on a formula simplification that was a NOOP. DAG size: 56 [2021-10-28 09:58:24,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:58:24,699 INFO L93 Difference]: Finished difference Result 77 states and 79 transitions. [2021-10-28 09:58:24,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-28 09:58:24,700 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 15 states have internal predecessors, (22), 7 states have call successors, (13), 9 states have call predecessors, (13), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 20 [2021-10-28 09:58:24,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:58:24,702 INFO L225 Difference]: With dead ends: 77 [2021-10-28 09:58:24,702 INFO L226 Difference]: Without dead ends: 77 [2021-10-28 09:58:24,703 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 17 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 59.8s TimeCoverageRelationStatistics Valid=208, Invalid=838, Unknown=10, NotChecked=0, Total=1056 [2021-10-28 09:58:24,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-10-28 09:58:24,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 58. [2021-10-28 09:58:24,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 28 states have (on average 1.4642857142857142) internal successors, (41), 41 states have internal predecessors, (41), 10 states have call successors, (10), 8 states have call predecessors, (10), 9 states have return successors, (10), 10 states have call predecessors, (10), 8 states have call successors, (10) [2021-10-28 09:58:24,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 61 transitions. [2021-10-28 09:58:24,713 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 61 transitions. Word has length 20 [2021-10-28 09:58:24,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:58:24,713 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 61 transitions. [2021-10-28 09:58:24,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 15 states have internal predecessors, (22), 7 states have call successors, (13), 9 states have call predecessors, (13), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-10-28 09:58:24,714 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 61 transitions. [2021-10-28 09:58:24,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-28 09:58:24,715 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:58:24,715 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:24,726 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-10-28 09:58:24,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:58:24,918 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-28 09:58:24,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:24,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1106040363, now seen corresponding path program 1 times [2021-10-28 09:58:24,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:58:24,919 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [325572495] [2021-10-28 09:58:24,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:24,919 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:58:24,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:58:24,920 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:58:24,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-28 09:58:25,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:25,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:58:25,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:58:25,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:25,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:58:25,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:25,325 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:58:25,325 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [325572495] [2021-10-28 09:58:25,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [325572495] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:25,326 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:25,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-28 09:58:25,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587686973] [2021-10-28 09:58:25,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:58:25,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:58:25,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:58:25,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:58:25,327 INFO L87 Difference]: Start difference. First operand 58 states and 61 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-28 09:58:25,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:58:25,348 INFO L93 Difference]: Finished difference Result 58 states and 60 transitions. [2021-10-28 09:58:25,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:58:25,349 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 19 [2021-10-28 09:58:25,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:58:25,350 INFO L225 Difference]: With dead ends: 58 [2021-10-28 09:58:25,350 INFO L226 Difference]: Without dead ends: 58 [2021-10-28 09:58:25,350 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:58:25,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-10-28 09:58:25,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-10-28 09:58:25,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 28 states have (on average 1.4285714285714286) internal successors, (40), 40 states have internal predecessors, (40), 10 states have call successors, (10), 8 states have call predecessors, (10), 9 states have return successors, (10), 10 states have call predecessors, (10), 8 states have call successors, (10) [2021-10-28 09:58:25,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 60 transitions. [2021-10-28 09:58:25,358 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 60 transitions. Word has length 19 [2021-10-28 09:58:25,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:58:25,358 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 60 transitions. [2021-10-28 09:58:25,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-28 09:58:25,359 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 60 transitions. [2021-10-28 09:58:25,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-28 09:58:25,360 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:58:25,360 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:25,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-28 09:58:25,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:58:25,577 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-28 09:58:25,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:25,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1302553868, now seen corresponding path program 1 times [2021-10-28 09:58:25,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:58:25,578 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1987730233] [2021-10-28 09:58:25,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:25,578 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:58:25,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:58:25,583 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:58:25,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-28 09:58:25,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:25,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-28 09:58:25,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:58:25,914 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-10-28 09:58:25,915 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 26 [2021-10-28 09:58:25,994 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-10-28 09:58:26,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:26,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:58:26,254 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2021-10-28 09:58:26,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:26,328 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:58:26,328 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1987730233] [2021-10-28 09:58:26,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1987730233] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:26,328 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:26,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 6 [2021-10-28 09:58:26,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091983599] [2021-10-28 09:58:26,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:58:26,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:58:26,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:58:26,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:58:26,330 INFO L87 Difference]: Start difference. First operand 58 states and 60 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2021-10-28 09:58:26,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:58:26,674 INFO L93 Difference]: Finished difference Result 56 states and 58 transitions. [2021-10-28 09:58:26,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:58:26,674 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 19 [2021-10-28 09:58:26,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:58:26,675 INFO L225 Difference]: With dead ends: 56 [2021-10-28 09:58:26,675 INFO L226 Difference]: Without dead ends: 56 [2021-10-28 09:58:26,675 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 29 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:58:26,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-10-28 09:58:26,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-10-28 09:58:26,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 28 states have (on average 1.3571428571428572) internal successors, (38), 38 states have internal predecessors, (38), 10 states have call successors, (10), 8 states have call predecessors, (10), 9 states have return successors, (10), 10 states have call predecessors, (10), 8 states have call successors, (10) [2021-10-28 09:58:26,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2021-10-28 09:58:26,681 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 19 [2021-10-28 09:58:26,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:58:26,682 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2021-10-28 09:58:26,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2021-10-28 09:58:26,682 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2021-10-28 09:58:26,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-28 09:58:26,683 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:58:26,683 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:26,694 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-10-28 09:58:26,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:58:26,886 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-28 09:58:26,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:26,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1302553867, now seen corresponding path program 1 times [2021-10-28 09:58:26,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:58:26,902 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2062100441] [2021-10-28 09:58:26,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:26,902 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:58:26,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:58:26,903 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:58:26,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-28 09:58:27,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:27,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-28 09:58:27,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:58:27,179 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-28 09:58:27,180 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 1 case distinctions, treesize of input 9 treesize of output 11 [2021-10-28 09:58:27,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-10-28 09:58:27,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:27,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:58:27,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-10-28 09:58:28,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:28,139 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:58:28,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2062100441] [2021-10-28 09:58:28,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2062100441] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:28,140 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:28,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-28 09:58:28,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194899486] [2021-10-28 09:58:28,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:58:28,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:58:28,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:58:28,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:58:28,141 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 7 states have internal predecessors, (20), 5 states have call successors, (11), 7 states have call predecessors, (11), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2021-10-28 09:58:29,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:58:29,333 INFO L93 Difference]: Finished difference Result 80 states and 80 transitions. [2021-10-28 09:58:29,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:58:29,334 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 7 states have internal predecessors, (20), 5 states have call successors, (11), 7 states have call predecessors, (11), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) Word has length 19 [2021-10-28 09:58:29,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:58:29,335 INFO L225 Difference]: With dead ends: 80 [2021-10-28 09:58:29,335 INFO L226 Difference]: Without dead ends: 67 [2021-10-28 09:58:29,335 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-10-28 09:58:29,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-10-28 09:58:29,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 61. [2021-10-28 09:58:29,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 34 states have (on average 1.411764705882353) internal successors, (48), 42 states have internal predecessors, (48), 10 states have call successors, (10), 10 states have call predecessors, (10), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2021-10-28 09:58:29,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 66 transitions. [2021-10-28 09:58:29,345 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 66 transitions. Word has length 19 [2021-10-28 09:58:29,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:58:29,346 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 66 transitions. [2021-10-28 09:58:29,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 7 states have internal predecessors, (20), 5 states have call successors, (11), 7 states have call predecessors, (11), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2021-10-28 09:58:29,346 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 66 transitions. [2021-10-28 09:58:29,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-28 09:58:29,347 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:58:29,347 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:29,359 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-10-28 09:58:29,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:58:29,557 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __ldv_list_addErr2REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-28 09:58:29,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:29,558 INFO L85 PathProgramCache]: Analyzing trace with hash 2109138627, now seen corresponding path program 1 times [2021-10-28 09:58:29,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:58:29,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1519926818] [2021-10-28 09:58:29,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:29,560 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:58:29,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:58:29,561 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:58:29,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-28 09:58:29,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:29,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 09:58:29,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:58:29,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 09:58:30,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:30,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:58:30,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:30,198 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:58:30,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1519926818] [2021-10-28 09:58:30,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1519926818] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:30,198 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:30,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 8 [2021-10-28 09:58:30,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635354047] [2021-10-28 09:58:30,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 09:58:30,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:58:30,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 09:58:30,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:58:30,200 INFO L87 Difference]: Start difference. First operand 61 states and 66 transitions. Second operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 09:58:30,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:58:30,671 INFO L93 Difference]: Finished difference Result 64 states and 63 transitions. [2021-10-28 09:58:30,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:58:30,671 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2021-10-28 09:58:30,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:58:30,672 INFO L225 Difference]: With dead ends: 64 [2021-10-28 09:58:30,672 INFO L226 Difference]: Without dead ends: 64 [2021-10-28 09:58:30,673 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 28 SyntacticMatches, 6 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:58:30,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-10-28 09:58:30,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 60. [2021-10-28 09:58:30,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 41 states have internal predecessors, (45), 10 states have call successors, (10), 10 states have call predecessors, (10), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2021-10-28 09:58:30,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2021-10-28 09:58:30,678 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 21 [2021-10-28 09:58:30,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:58:30,678 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2021-10-28 09:58:30,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 09:58:30,679 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2021-10-28 09:58:30,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-28 09:58:30,679 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:58:30,679 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:30,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-28 09:58:30,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:58:30,893 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __ldv_list_addErr3REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-28 09:58:30,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:30,894 INFO L85 PathProgramCache]: Analyzing trace with hash 2109138628, now seen corresponding path program 1 times [2021-10-28 09:58:30,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:58:30,894 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [532249605] [2021-10-28 09:58:30,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:30,894 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:58:30,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:58:30,896 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:58:30,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-28 09:58:31,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:31,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-28 09:58:31,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:58:31,225 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 09:58:31,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:31,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:58:32,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:32,479 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:58:32,479 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [532249605] [2021-10-28 09:58:32,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [532249605] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:32,479 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:32,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 17 [2021-10-28 09:58:32,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016151630] [2021-10-28 09:58:32,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-28 09:58:32,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:58:32,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-28 09:58:32,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2021-10-28 09:58:32,481 INFO L87 Difference]: Start difference. First operand 60 states and 63 transitions. Second operand has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 12 states have internal predecessors, (22), 5 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-28 09:58:33,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:58:33,568 INFO L93 Difference]: Finished difference Result 62 states and 61 transitions. [2021-10-28 09:58:33,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 09:58:33,569 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 12 states have internal predecessors, (22), 5 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 21 [2021-10-28 09:58:33,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:58:33,570 INFO L225 Difference]: With dead ends: 62 [2021-10-28 09:58:33,570 INFO L226 Difference]: Without dead ends: 62 [2021-10-28 09:58:33,570 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2021-10-28 09:58:33,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-10-28 09:58:33,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 60. [2021-10-28 09:58:33,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 34 states have (on average 1.2647058823529411) internal successors, (43), 41 states have internal predecessors, (43), 10 states have call successors, (10), 10 states have call predecessors, (10), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2021-10-28 09:58:33,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2021-10-28 09:58:33,575 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 21 [2021-10-28 09:58:33,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:58:33,576 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2021-10-28 09:58:33,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 12 states have internal predecessors, (22), 5 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-28 09:58:33,576 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2021-10-28 09:58:33,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-28 09:58:33,577 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:58:33,577 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:33,588 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-10-28 09:58:33,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:58:33,782 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __ldv_list_addErr2REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-28 09:58:33,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:33,783 INFO L85 PathProgramCache]: Analyzing trace with hash -2056745950, now seen corresponding path program 1 times [2021-10-28 09:58:33,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:58:33,783 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2085114436] [2021-10-28 09:58:33,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:33,783 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:58:33,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:58:33,784 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:58:33,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-28 09:58:34,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:34,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 09:58:34,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:58:34,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:34,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:58:34,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:34,305 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:58:34,305 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2085114436] [2021-10-28 09:58:34,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2085114436] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:34,305 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:34,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-28 09:58:34,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877287372] [2021-10-28 09:58:34,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:58:34,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:58:34,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:58:34,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:58:34,307 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 09:58:34,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:58:34,323 INFO L93 Difference]: Finished difference Result 48 states and 47 transitions. [2021-10-28 09:58:34,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:58:34,323 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2021-10-28 09:58:34,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:58:34,324 INFO L225 Difference]: With dead ends: 48 [2021-10-28 09:58:34,324 INFO L226 Difference]: Without dead ends: 44 [2021-10-28 09:58:34,324 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:58:34,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-10-28 09:58:34,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2021-10-28 09:58:34,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 28 states have internal predecessors, (28), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-10-28 09:58:34,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 43 transitions. [2021-10-28 09:58:34,327 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 43 transitions. Word has length 21 [2021-10-28 09:58:34,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:58:34,328 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 43 transitions. [2021-10-28 09:58:34,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 09:58:34,328 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 43 transitions. [2021-10-28 09:58:34,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-28 09:58:34,329 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:58:34,329 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:34,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-28 09:58:34,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:58:34,529 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __ldv_list_addErr6REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-28 09:58:34,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:34,530 INFO L85 PathProgramCache]: Analyzing trace with hash -342340858, now seen corresponding path program 1 times [2021-10-28 09:58:34,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:58:34,530 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [976606650] [2021-10-28 09:58:34,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:34,530 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:58:34,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:58:34,531 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:58:34,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-28 09:58:34,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:34,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:58:34,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:58:34,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:34,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:58:35,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:35,001 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:58:35,001 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [976606650] [2021-10-28 09:58:35,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [976606650] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:35,001 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:35,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-28 09:58:35,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394665149] [2021-10-28 09:58:35,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:58:35,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:58:35,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:58:35,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:58:35,003 INFO L87 Difference]: Start difference. First operand 44 states and 43 transitions. Second operand has 5 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 09:58:35,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:58:35,141 INFO L93 Difference]: Finished difference Result 43 states and 42 transitions. [2021-10-28 09:58:35,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:58:35,142 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2021-10-28 09:58:35,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:58:35,143 INFO L225 Difference]: With dead ends: 43 [2021-10-28 09:58:35,143 INFO L226 Difference]: Without dead ends: 43 [2021-10-28 09:58:35,143 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:58:35,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-10-28 09:58:35,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-10-28 09:58:35,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 24 states have (on average 1.125) internal successors, (27), 27 states have internal predecessors, (27), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-10-28 09:58:35,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 42 transitions. [2021-10-28 09:58:35,146 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 42 transitions. Word has length 23 [2021-10-28 09:58:35,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:58:35,146 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 42 transitions. [2021-10-28 09:58:35,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 09:58:35,146 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 42 transitions. [2021-10-28 09:58:35,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-28 09:58:35,147 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:58:35,147 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:35,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-28 09:58:35,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:58:35,359 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __ldv_list_addErr7REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-28 09:58:35,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:35,359 INFO L85 PathProgramCache]: Analyzing trace with hash -342340857, now seen corresponding path program 1 times [2021-10-28 09:58:35,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:58:35,360 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [534855871] [2021-10-28 09:58:35,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:35,360 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:58:35,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:58:35,361 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:58:35,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-28 09:58:35,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:35,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 09:58:35,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:58:35,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:35,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:58:36,161 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-10-28 09:58:36,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:36,435 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:58:36,435 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [534855871] [2021-10-28 09:58:36,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [534855871] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:36,435 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:36,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-28 09:58:36,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072766984] [2021-10-28 09:58:36,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-28 09:58:36,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:58:36,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 09:58:36,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-10-28 09:58:36,438 INFO L87 Difference]: Start difference. First operand 43 states and 42 transitions. Second operand has 14 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 10 states have internal predecessors, (28), 5 states have call successors, (13), 7 states have call predecessors, (13), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2021-10-28 09:58:36,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:58:36,960 INFO L93 Difference]: Finished difference Result 42 states and 41 transitions. [2021-10-28 09:58:36,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:58:36,961 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 10 states have internal predecessors, (28), 5 states have call successors, (13), 7 states have call predecessors, (13), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 23 [2021-10-28 09:58:36,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:58:36,962 INFO L225 Difference]: With dead ends: 42 [2021-10-28 09:58:36,962 INFO L226 Difference]: Without dead ends: 42 [2021-10-28 09:58:36,962 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2021-10-28 09:58:36,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-10-28 09:58:36,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-10-28 09:58:36,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 26 states have internal predecessors, (26), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-10-28 09:58:36,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 41 transitions. [2021-10-28 09:58:36,965 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 41 transitions. Word has length 23 [2021-10-28 09:58:36,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:58:36,966 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 41 transitions. [2021-10-28 09:58:36,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 10 states have internal predecessors, (28), 5 states have call successors, (13), 7 states have call predecessors, (13), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2021-10-28 09:58:36,966 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 41 transitions. [2021-10-28 09:58:36,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-28 09:58:36,967 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:58:36,967 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:36,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-28 09:58:37,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:58:37,170 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-28 09:58:37,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:37,171 INFO L85 PathProgramCache]: Analyzing trace with hash 891555764, now seen corresponding path program 1 times [2021-10-28 09:58:37,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:58:37,171 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [720459248] [2021-10-28 09:58:37,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:37,172 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:58:37,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:58:37,172 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:58:37,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-28 09:58:37,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:37,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 09:58:37,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:58:37,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:37,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:58:38,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-10-28 09:58:38,669 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-28 09:58:38,670 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 20 [2021-10-28 09:58:38,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:38,932 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:58:38,932 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [720459248] [2021-10-28 09:58:38,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [720459248] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:38,932 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:38,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 8] imperfect sequences [] total 14 [2021-10-28 09:58:38,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470407105] [2021-10-28 09:58:38,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-28 09:58:38,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:58:38,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-28 09:58:38,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-10-28 09:58:38,934 INFO L87 Difference]: Start difference. First operand 42 states and 41 transitions. Second operand has 15 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 7 states have call successors, (15), 5 states have call predecessors, (15), 7 states have return successors, (10), 8 states have call predecessors, (10), 5 states have call successors, (10) [2021-10-28 09:58:39,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:58:39,744 INFO L93 Difference]: Finished difference Result 41 states and 40 transitions. [2021-10-28 09:58:39,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:58:39,745 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 7 states have call successors, (15), 5 states have call predecessors, (15), 7 states have return successors, (10), 8 states have call predecessors, (10), 5 states have call successors, (10) Word has length 33 [2021-10-28 09:58:39,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:58:39,746 INFO L225 Difference]: With dead ends: 41 [2021-10-28 09:58:39,746 INFO L226 Difference]: Without dead ends: 41 [2021-10-28 09:58:39,747 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2021-10-28 09:58:39,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-10-28 09:58:39,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-10-28 09:58:39,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 24 states have (on average 1.0416666666666667) internal successors, (25), 25 states have internal predecessors, (25), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-10-28 09:58:39,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 40 transitions. [2021-10-28 09:58:39,749 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 40 transitions. Word has length 33 [2021-10-28 09:58:39,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:58:39,750 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 40 transitions. [2021-10-28 09:58:39,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 7 states have call successors, (15), 5 states have call predecessors, (15), 7 states have return successors, (10), 8 states have call predecessors, (10), 5 states have call successors, (10) [2021-10-28 09:58:39,750 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 40 transitions. [2021-10-28 09:58:39,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-28 09:58:39,751 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:58:39,751 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:39,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-28 09:58:39,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:58:39,963 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-28 09:58:39,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:39,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1868424939, now seen corresponding path program 1 times [2021-10-28 09:58:39,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:58:39,964 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [7464273] [2021-10-28 09:58:39,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:39,964 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:58:39,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:58:39,965 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:58:39,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-28 09:58:40,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:40,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 35 conjunts are in the unsatisfiable core [2021-10-28 09:58:40,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:58:40,472 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-10-28 09:58:40,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-10-28 09:58:41,057 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-10-28 09:58:41,062 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2021-10-28 09:58:41,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:41,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:58:41,785 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-28 09:58:41,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 36 [2021-10-28 09:58:42,374 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-28 09:58:42,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 28 [2021-10-28 09:58:42,626 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-10-28 09:58:42,650 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2021-10-28 09:58:43,046 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-28 09:58:43,047 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 20 [2021-10-28 09:58:43,323 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2021-10-28 09:58:43,343 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-10-28 09:58:43,681 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-28 09:58:43,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 20 [2021-10-28 09:58:44,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:44,708 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:58:44,708 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [7464273] [2021-10-28 09:58:44,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [7464273] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:44,709 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:44,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 25 [2021-10-28 09:58:44,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112303275] [2021-10-28 09:58:44,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-28 09:58:44,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:58:44,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-28 09:58:44,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=564, Unknown=0, NotChecked=0, Total=650 [2021-10-28 09:58:44,711 INFO L87 Difference]: Start difference. First operand 41 states and 40 transitions. Second operand has 26 states, 21 states have (on average 2.0) internal successors, (42), 21 states have internal predecessors, (42), 9 states have call successors, (15), 9 states have call predecessors, (15), 10 states have return successors, (10), 10 states have call predecessors, (10), 7 states have call successors, (10) [2021-10-28 09:58:46,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:58:46,592 INFO L93 Difference]: Finished difference Result 40 states and 39 transitions. [2021-10-28 09:58:46,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-28 09:58:46,593 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 21 states have (on average 2.0) internal successors, (42), 21 states have internal predecessors, (42), 9 states have call successors, (15), 9 states have call predecessors, (15), 10 states have return successors, (10), 10 states have call predecessors, (10), 7 states have call successors, (10) Word has length 34 [2021-10-28 09:58:46,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:58:46,593 INFO L225 Difference]: With dead ends: 40 [2021-10-28 09:58:46,593 INFO L226 Difference]: Without dead ends: 40 [2021-10-28 09:58:46,594 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=226, Invalid=1180, Unknown=0, NotChecked=0, Total=1406 [2021-10-28 09:58:46,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-10-28 09:58:46,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-10-28 09:58:46,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 24 states have (on average 1.0) internal successors, (24), 24 states have internal predecessors, (24), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-10-28 09:58:46,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 39 transitions. [2021-10-28 09:58:46,597 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 39 transitions. Word has length 34 [2021-10-28 09:58:46,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:58:46,597 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 39 transitions. [2021-10-28 09:58:46,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 21 states have (on average 2.0) internal successors, (42), 21 states have internal predecessors, (42), 9 states have call successors, (15), 9 states have call predecessors, (15), 10 states have return successors, (10), 10 states have call predecessors, (10), 7 states have call successors, (10) [2021-10-28 09:58:46,598 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 39 transitions. [2021-10-28 09:58:46,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-28 09:58:46,599 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:58:46,599 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:46,617 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-28 09:58:46,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:58:46,812 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 67 more)] === [2021-10-28 09:58:46,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:46,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1326046929, now seen corresponding path program 1 times [2021-10-28 09:58:46,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:58:46,813 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [311401636] [2021-10-28 09:58:46,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:46,813 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:58:46,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:58:46,814 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:58:46,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-28 09:58:47,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:58:47,258 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:58:47,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:58:47,383 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-28 09:58:47,383 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 09:58:47,384 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK [2021-10-28 09:58:47,386 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_allocErr0REQUIRES_VIOLATION [2021-10-28 09:58:47,386 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_allocErr1REQUIRES_VIOLATION [2021-10-28 09:58:47,387 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kref_initErr0REQUIRES_VIOLATION [2021-10-28 09:58:47,387 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kref_initErr1REQUIRES_VIOLATION [2021-10-28 09:58:47,387 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr0REQUIRES_VIOLATION [2021-10-28 09:58:47,387 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr1REQUIRES_VIOLATION [2021-10-28 09:58:47,387 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr2REQUIRES_VIOLATION [2021-10-28 09:58:47,387 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr3REQUIRES_VIOLATION [2021-10-28 09:58:47,388 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION [2021-10-28 09:58:47,388 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION [2021-10-28 09:58:47,388 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION [2021-10-28 09:58:47,388 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION [2021-10-28 09:58:47,388 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr0REQUIRES_VIOLATION [2021-10-28 09:58:47,389 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr1REQUIRES_VIOLATION [2021-10-28 09:58:47,389 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr2REQUIRES_VIOLATION [2021-10-28 09:58:47,389 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr3REQUIRES_VIOLATION [2021-10-28 09:58:47,389 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr4REQUIRES_VIOLATION [2021-10-28 09:58:47,389 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr5REQUIRES_VIOLATION [2021-10-28 09:58:47,389 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr6REQUIRES_VIOLATION [2021-10-28 09:58:47,390 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr7REQUIRES_VIOLATION [2021-10-28 09:58:47,390 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_set_drvdataErr0REQUIRES_VIOLATION [2021-10-28 09:58:47,390 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_set_drvdataErr1REQUIRES_VIOLATION [2021-10-28 09:58:47,390 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr0REQUIRES_VIOLATION [2021-10-28 09:58:47,390 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr1REQUIRES_VIOLATION [2021-10-28 09:58:47,390 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr2REQUIRES_VIOLATION [2021-10-28 09:58:47,391 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr3REQUIRES_VIOLATION [2021-10-28 09:58:47,391 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr0REQUIRES_VIOLATION [2021-10-28 09:58:47,391 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr1REQUIRES_VIOLATION [2021-10-28 09:58:47,391 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr2REQUIRES_VIOLATION [2021-10-28 09:58:47,391 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr3REQUIRES_VIOLATION [2021-10-28 09:58:47,391 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr0REQUIRES_VIOLATION [2021-10-28 09:58:47,392 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr1REQUIRES_VIOLATION [2021-10-28 09:58:47,392 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr0REQUIRES_VIOLATION [2021-10-28 09:58:47,392 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr1REQUIRES_VIOLATION [2021-10-28 09:58:47,392 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr2REQUIRES_VIOLATION [2021-10-28 09:58:47,392 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr3REQUIRES_VIOLATION [2021-10-28 09:58:47,393 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr4REQUIRES_VIOLATION [2021-10-28 09:58:47,393 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr5REQUIRES_VIOLATION [2021-10-28 09:58:47,393 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_get_drvdataErr0REQUIRES_VIOLATION [2021-10-28 09:58:47,393 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_get_drvdataErr1REQUIRES_VIOLATION [2021-10-28 09:58:47,393 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr0REQUIRES_VIOLATION [2021-10-28 09:58:47,393 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr1REQUIRES_VIOLATION [2021-10-28 09:58:47,394 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:58:47,394 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:58:47,394 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:58:47,394 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:58:47,394 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:58:47,395 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:58:47,395 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr0REQUIRES_VIOLATION [2021-10-28 09:58:47,395 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr1REQUIRES_VIOLATION [2021-10-28 09:58:47,395 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr2REQUIRES_VIOLATION [2021-10-28 09:58:47,395 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr3REQUIRES_VIOLATION [2021-10-28 09:58:47,395 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr4REQUIRES_VIOLATION [2021-10-28 09:58:47,396 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr5REQUIRES_VIOLATION [2021-10-28 09:58:47,396 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr0REQUIRES_VIOLATION [2021-10-28 09:58:47,396 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr1REQUIRES_VIOLATION [2021-10-28 09:58:47,396 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:58:47,396 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:58:47,397 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:58:47,397 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:58:47,397 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:58:47,397 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:58:47,397 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_createErr0REQUIRES_VIOLATION [2021-10-28 09:58:47,398 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_createErr1REQUIRES_VIOLATION [2021-10-28 09:58:47,398 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr0REQUIRES_VIOLATION [2021-10-28 09:58:47,398 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr1REQUIRES_VIOLATION [2021-10-28 09:58:47,398 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr2REQUIRES_VIOLATION [2021-10-28 09:58:47,398 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr3REQUIRES_VIOLATION [2021-10-28 09:58:47,398 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_add_tailErr0REQUIRES_VIOLATION [2021-10-28 09:58:47,399 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_add_tailErr1REQUIRES_VIOLATION [2021-10-28 09:58:47,415 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-28 09:58:47,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:58:47,614 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:47,618 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:58:47,632 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-10-28 09:58:47,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:58:47 BoogieIcfgContainer [2021-10-28 09:58:47,651 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:58:47,651 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:58:47,652 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:58:47,652 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:58:47,652 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:55:04" (3/4) ... [2021-10-28 09:58:47,655 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 09:58:47,655 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:58:47,656 INFO L168 Benchmark]: Toolchain (without parser) took 225150.12 ms. Allocated memory was 73.4 MB in the beginning and 109.1 MB in the end (delta: 35.7 MB). Free memory was 56.4 MB in the beginning and 51.3 MB in the end (delta: 5.1 MB). Peak memory consumption was 41.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:58:47,656 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 73.4 MB. Free memory was 55.4 MB in the beginning and 55.3 MB in the end (delta: 59.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:58:47,657 INFO L168 Benchmark]: CACSL2BoogieTranslator took 719.19 ms. Allocated memory is still 73.4 MB. Free memory was 56.3 MB in the beginning and 50.6 MB in the end (delta: 5.7 MB). Peak memory consumption was 28.3 MB. Max. memory is 16.1 GB. [2021-10-28 09:58:47,657 INFO L168 Benchmark]: Boogie Preprocessor took 97.35 ms. Allocated memory is still 73.4 MB. Free memory was 50.6 MB in the beginning and 45.9 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:58:47,658 INFO L168 Benchmark]: RCFGBuilder took 1530.25 ms. Allocated memory was 73.4 MB in the beginning and 90.2 MB in the end (delta: 16.8 MB). Free memory was 45.9 MB in the beginning and 63.6 MB in the end (delta: -17.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-10-28 09:58:47,658 INFO L168 Benchmark]: TraceAbstraction took 222792.69 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 63.1 MB in the beginning and 51.3 MB in the end (delta: 11.8 MB). Peak memory consumption was 29.6 MB. Max. memory is 16.1 GB. [2021-10-28 09:58:47,658 INFO L168 Benchmark]: Witness Printer took 3.91 ms. Allocated memory is still 109.1 MB. Free memory is still 51.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:58:47,660 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 73.4 MB. Free memory was 55.4 MB in the beginning and 55.3 MB in the end (delta: 59.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 719.19 ms. Allocated memory is still 73.4 MB. Free memory was 56.3 MB in the beginning and 50.6 MB in the end (delta: 5.7 MB). Peak memory consumption was 28.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 97.35 ms. Allocated memory is still 73.4 MB. Free memory was 50.6 MB in the beginning and 45.9 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1530.25 ms. Allocated memory was 73.4 MB in the beginning and 90.2 MB in the end (delta: 16.8 MB). Free memory was 45.9 MB in the beginning and 63.6 MB in the end (delta: -17.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 222792.69 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 63.1 MB in the beginning and 51.3 MB in the end (delta: 11.8 MB). Peak memory consumption was 29.6 MB. Max. memory is 16.1 GB. * Witness Printer took 3.91 ms. Allocated memory is still 109.1 MB. Free memory is still 51.3 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.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 772]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 772. Possible FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; [L757] struct ldv_list_head global_list_13 = { &(global_list_13), &(global_list_13) }; VAL [\old(global_list_13)=null, \old(global_list_13)=null, \old(ldv_global_msg_list)=null, \old(ldv_global_msg_list)=null, global_list_13={-2147483648:0}, ldv_global_msg_list={-1073741824:0}] [L773] CALL entry_point() VAL [global_list_13={-2147483648:0}, ldv_global_msg_list={-1073741824:0}] [L769] CALL alloc_13() VAL [global_list_13={-2147483648:0}, ldv_global_msg_list={-1073741824:0}] [L763] CALL, EXPR ldv_malloc(sizeof(struct A13)) VAL [\old(size)=12, global_list_13={-2147483648:0}, ldv_global_msg_list={-1073741824:0}] [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L763] RET, EXPR ldv_malloc(sizeof(struct A13)) VAL [global_list_13={-2147483648:0}, ldv_global_msg_list={-1073741824:0}, ldv_malloc(sizeof(struct A13))={1:0}] [L763] struct A13 *p = (struct A13 *)ldv_malloc(sizeof(struct A13)); [L764] COND TRUE \read(*p) VAL [global_list_13={-2147483648:0}, ldv_global_msg_list={-1073741824:0}, p={1:0}] [L765] CALL ldv_list_add(&p->list, &global_list_13) VAL [global_list_13={-2147483648:0}, head={-2147483648:0}, ldv_global_msg_list={-1073741824:0}, new={1:4}] [L559] EXPR head->next VAL [global_list_13={-2147483648:0}, head={-2147483648:0}, head={-2147483648:0}, head->next={-2147483648:0}, ldv_global_msg_list={-1073741824:0}, new={1:4}, new={1:4}] [L559] CALL __ldv_list_add(new, head, head->next) VAL [global_list_13={-2147483648:0}, ldv_global_msg_list={-1073741824:0}, new={1:4}, next={-2147483648:0}, prev={-2147483648:0}] [L547] next->prev = new VAL [global_list_13={-2147483648:0}, ldv_global_msg_list={-1073741824:0}, new={1:4}, new={1:4}, next={-2147483648:0}, next={-2147483648:0}, prev={-2147483648:0}, prev={-2147483648:0}] [L548] new->next = next VAL [global_list_13={-2147483648:0}, ldv_global_msg_list={-1073741824:0}, new={1:4}, new={1:4}, next={-2147483648:0}, next={-2147483648:0}, prev={-2147483648:0}, prev={-2147483648:0}] [L549] new->prev = prev VAL [global_list_13={-2147483648:0}, ldv_global_msg_list={-1073741824:0}, new={1:4}, new={1:4}, next={-2147483648:0}, next={-2147483648:0}, prev={-2147483648:0}, prev={-2147483648:0}] [L550] prev->next = new VAL [global_list_13={-2147483648:0}, ldv_global_msg_list={-1073741824:0}, new={1:4}, new={1:4}, next={-2147483648:0}, next={-2147483648:0}, prev={-2147483648:0}, prev={-2147483648:0}] [L559] RET __ldv_list_add(new, head, head->next) VAL [global_list_13={-2147483648:0}, head={-2147483648:0}, head={-2147483648:0}, head->next={-2147483648:0}, ldv_global_msg_list={-1073741824:0}, new={1:4}, new={1:4}] [L765] RET ldv_list_add(&p->list, &global_list_13) VAL [global_list_13={-2147483648:0}, ldv_global_msg_list={-1073741824:0}, p={1:0}] [L769] RET alloc_13() VAL [global_list_13={-2147483648:0}, ldv_global_msg_list={-1073741824:0}] [L770] CALL LDV_INIT_LIST_HEAD(&global_list_13) VAL [global_list_13={-2147483648:0}, ldv_global_msg_list={-1073741824:0}, list={-2147483648:0}] [L540] list->next = list VAL [global_list_13={-2147483648:0}, ldv_global_msg_list={-1073741824:0}, list={-2147483648:0}, list={-2147483648:0}] [L541] list->prev = list VAL [global_list_13={-2147483648:0}, ldv_global_msg_list={-1073741824:0}, list={-2147483648:0}, list={-2147483648:0}] [L770] RET LDV_INIT_LIST_HEAD(&global_list_13) VAL [global_list_13={-2147483648:0}, ldv_global_msg_list={-1073741824:0}] [L773] RET entry_point() VAL [global_list_13={-2147483648:0}, ldv_global_msg_list={-1073741824:0}] - UnprovableResult [Line: 578]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 578]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 682]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 682]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 658]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 658]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 660]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 660]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 549]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 549]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 623]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 623]: 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: 666]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 666]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 668]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 668]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 619]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 619]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 594]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 594]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 594]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 588]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 588]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 699]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 699]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 744]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 744]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 563]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 563]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 48 procedures, 335 locations, 71 error locations. Started 1 CEGAR loops. OverallTime: 222.6s, OverallIterations: 15, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 169.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 499 SDtfs, 951 SDslu, 1740 SDs, 0 SdLazy, 2229 SolverSat, 447 SolverUnsat, 64 SolverUnknown, 0 SolverNotchecked, 119.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 663 GetRequests, 435 SyntacticMatches, 31 SemanticMatches, 197 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 81.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=124occurred in iteration=0, InterpolantAutomatonStates: 127, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 14 MinimizatonAttempts, 50 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 45.8s InterpolantComputationTime, 346 NumberOfCodeBlocks, 346 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 586 ConstructedInterpolants, 38 QuantifiedInterpolants, 6185 SizeOfPredicates, 128 NumberOfNonLiveVariables, 1929 ConjunctsInSsa, 229 ConjunctsInUnsatCore, 28 InterpolantComputations, 28 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-28 09:58:47,723 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e265291-3a7e-4bdc-8cf1-8739f7162d62/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...