./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/list-properties/list_search-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/list_search-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/config/svcomp-MemCleanup-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b1ea7ddff382751fa0e11562333bdb4981cac7bdbf1d356a007804e7e2e5a289 ................................................................................................................................. 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_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/list_search-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/config/svcomp-MemCleanup-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b1ea7ddff382751fa0e11562333bdb4981cac7bdbf1d356a007804e7e2e5a289 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 22:53:16,640 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 22:53:16,644 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 22:53:16,694 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 22:53:16,695 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 22:53:16,697 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 22:53:16,699 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 22:53:16,703 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 22:53:16,706 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 22:53:16,708 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 22:53:16,709 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 22:53:16,711 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 22:53:16,712 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 22:53:16,714 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 22:53:16,716 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 22:53:16,719 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 22:53:16,720 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 22:53:16,722 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 22:53:16,725 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 22:53:16,728 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 22:53:16,731 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 22:53:16,733 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 22:53:16,735 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 22:53:16,736 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 22:53:16,741 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 22:53:16,742 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 22:53:16,742 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 22:53:16,744 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 22:53:16,745 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 22:53:16,746 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 22:53:16,747 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 22:53:16,748 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 22:53:16,749 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 22:53:16,751 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 22:53:16,752 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 22:53:16,753 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 22:53:16,754 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 22:53:16,755 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 22:53:16,755 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 22:53:16,757 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 22:53:16,758 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 22:53:16,763 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2021-10-28 22:53:16,809 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 22:53:16,811 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 22:53:16,811 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 22:53:16,819 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 22:53:16,821 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 22:53:16,822 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 22:53:16,823 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 22:53:16,823 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 22:53:16,823 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 22:53:16,824 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 22:53:16,825 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 22:53:16,825 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 22:53:16,826 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 22:53:16,826 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 22:53:16,826 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 22:53:16,826 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 22:53:16,827 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 22:53:16,827 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 22:53:16,827 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 22:53:16,828 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 22:53:16,828 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 22:53:16,828 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 22:53:16,828 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 22:53:16,829 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 22:53:16,829 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 22:53:16,829 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 22:53:16,830 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 22:53:16,830 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 22:53:16,830 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_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1ea7ddff382751fa0e11562333bdb4981cac7bdbf1d356a007804e7e2e5a289 [2021-10-28 22:53:17,213 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 22:53:17,246 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 22:53:17,249 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 22:53:17,251 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 22:53:17,254 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 22:53:17,255 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/list-properties/list_search-2.i [2021-10-28 22:53:17,342 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/data/122106e2f/bef6dbda27f64f049468eb7073607aac/FLAG4cd4df1a8 [2021-10-28 22:53:17,973 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 22:53:17,974 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/sv-benchmarks/c/list-properties/list_search-2.i [2021-10-28 22:53:17,994 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/data/122106e2f/bef6dbda27f64f049468eb7073607aac/FLAG4cd4df1a8 [2021-10-28 22:53:18,218 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/data/122106e2f/bef6dbda27f64f049468eb7073607aac [2021-10-28 22:53:18,222 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 22:53:18,224 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 22:53:18,227 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 22:53:18,227 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 22:53:18,232 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 22:53:18,233 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:53:18" (1/1) ... [2021-10-28 22:53:18,235 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32c886b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:53:18, skipping insertion in model container [2021-10-28 22:53:18,235 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:53:18" (1/1) ... [2021-10-28 22:53:18,245 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 22:53:18,310 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 22:53:18,622 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/sv-benchmarks/c/list-properties/list_search-2.i[813,826] [2021-10-28 22:53:18,923 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 22:53:18,934 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 22:53:18,935 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1be3f61a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:53:18, skipping insertion in model container [2021-10-28 22:53:18,935 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 22:53:18,936 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-10-28 22:53:18,938 INFO L168 Benchmark]: Toolchain (without parser) took 712.77 ms. Allocated memory is still 113.2 MB. Free memory was 73.9 MB in the beginning and 83.1 MB in the end (delta: -9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 22:53:18,939 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 113.2 MB. Free memory is still 92.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 22:53:18,940 INFO L168 Benchmark]: CACSL2BoogieTranslator took 709.10 ms. Allocated memory is still 113.2 MB. Free memory was 73.7 MB in the beginning and 83.1 MB in the end (delta: -9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 22:53:18,943 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 113.2 MB. Free memory is still 92.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 709.10 ms. Allocated memory is still 113.2 MB. Free memory was 73.7 MB in the beginning and 83.1 MB in the end (delta: -9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 792]: 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 22:53:21,824 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 22:53:21,829 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 22:53:21,892 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 22:53:21,893 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 22:53:21,902 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 22:53:21,905 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 22:53:21,913 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 22:53:21,917 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 22:53:21,924 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 22:53:21,926 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 22:53:21,928 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 22:53:21,929 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 22:53:21,932 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 22:53:21,934 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 22:53:21,940 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 22:53:21,942 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 22:53:21,943 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 22:53:21,945 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 22:53:21,955 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 22:53:21,958 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 22:53:21,959 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 22:53:21,962 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 22:53:21,965 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 22:53:21,976 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 22:53:21,977 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 22:53:21,977 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 22:53:21,980 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 22:53:21,980 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 22:53:21,982 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 22:53:21,982 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 22:53:21,983 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 22:53:21,986 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 22:53:21,987 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 22:53:21,988 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 22:53:21,989 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 22:53:21,990 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 22:53:21,990 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 22:53:21,990 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 22:53:21,992 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 22:53:21,993 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 22:53:21,994 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/config/svcomp-MemCleanup-32bit-Automizer_Bitvector.epf [2021-10-28 22:53:22,048 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 22:53:22,049 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 22:53:22,049 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 22:53:22,050 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 22:53:22,052 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 22:53:22,053 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 22:53:22,053 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 22:53:22,053 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 22:53:22,054 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 22:53:22,054 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 22:53:22,055 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 22:53:22,055 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 22:53:22,056 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 22:53:22,056 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 22:53:22,056 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 22:53:22,056 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 22:53:22,057 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 22:53:22,057 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-28 22:53:22,057 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-28 22:53:22,057 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 22:53:22,058 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 22:53:22,058 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 22:53:22,058 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 22:53:22,058 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 22:53:22,059 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 22:53:22,059 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 22:53:22,059 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 22:53:22,060 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-28 22:53:22,060 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-28 22:53:22,060 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 22:53:22,060 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-28 22:53:22,061 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_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1ea7ddff382751fa0e11562333bdb4981cac7bdbf1d356a007804e7e2e5a289 [2021-10-28 22:53:22,494 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 22:53:22,520 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 22:53:22,523 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 22:53:22,525 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 22:53:22,526 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 22:53:22,527 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/list-properties/list_search-2.i [2021-10-28 22:53:22,606 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/data/424497222/9c733ce45136488881767d1d05518e46/FLAGa5d39634a [2021-10-28 22:53:23,351 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 22:53:23,355 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/sv-benchmarks/c/list-properties/list_search-2.i [2021-10-28 22:53:23,385 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/data/424497222/9c733ce45136488881767d1d05518e46/FLAGa5d39634a [2021-10-28 22:53:23,577 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/data/424497222/9c733ce45136488881767d1d05518e46 [2021-10-28 22:53:23,582 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 22:53:23,585 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 22:53:23,589 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 22:53:23,589 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 22:53:23,594 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 22:53:23,595 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:53:23" (1/1) ... [2021-10-28 22:53:23,597 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@479d846e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:53:23, skipping insertion in model container [2021-10-28 22:53:23,598 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:53:23" (1/1) ... [2021-10-28 22:53:23,607 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 22:53:23,686 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 22:53:23,926 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/sv-benchmarks/c/list-properties/list_search-2.i[813,826] [2021-10-28 22:53:24,259 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 22:53:24,275 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-28 22:53:24,286 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 22:53:24,289 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/sv-benchmarks/c/list-properties/list_search-2.i[813,826] [2021-10-28 22:53:24,330 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 22:53:24,343 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 22:53:24,370 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/sv-benchmarks/c/list-properties/list_search-2.i[813,826] [2021-10-28 22:53:24,437 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 22:53:24,548 INFO L208 MainTranslator]: Completed translation [2021-10-28 22:53:24,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:53:24 WrapperNode [2021-10-28 22:53:24,550 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 22:53:24,552 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 22:53:24,552 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 22:53:24,552 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 22:53:24,567 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:53:24" (1/1) ... [2021-10-28 22:53:24,567 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:53:24" (1/1) ... [2021-10-28 22:53:24,614 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:53:24" (1/1) ... [2021-10-28 22:53:24,622 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:53:24" (1/1) ... [2021-10-28 22:53:24,654 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:53:24" (1/1) ... [2021-10-28 22:53:24,676 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:53:24" (1/1) ... [2021-10-28 22:53:24,692 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:53:24" (1/1) ... [2021-10-28 22:53:24,717 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 22:53:24,718 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 22:53:24,718 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 22:53:24,719 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 22:53:24,720 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:53:24" (1/1) ... [2021-10-28 22:53:24,729 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 22:53:24,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:53:24,774 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 22:53:24,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 22:53:24,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 22:53:24,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 22:53:24,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-10-28 22:53:24,835 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-28 22:53:24,835 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-10-28 22:53:24,835 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-28 22:53:24,835 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-28 22:53:24,836 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-28 22:53:24,836 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-28 22:53:24,836 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-28 22:53:24,836 INFO L138 BoogieDeclarations]: Found implementation of procedure search_list [2021-10-28 22:53:24,837 INFO L138 BoogieDeclarations]: Found implementation of procedure delete_list [2021-10-28 22:53:24,837 INFO L138 BoogieDeclarations]: Found implementation of procedure insert_list [2021-10-28 22:53:24,837 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 22:53:24,837 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 22:53:24,838 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-28 22:53:24,838 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-28 22:53:24,838 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-28 22:53:24,838 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-28 22:53:24,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 22:53:24,839 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-10-28 22:53:24,839 INFO L130 BoogieDeclarations]: Found specification of procedure __underflow [2021-10-28 22:53:24,839 INFO L130 BoogieDeclarations]: Found specification of procedure __uflow [2021-10-28 22:53:24,839 INFO L130 BoogieDeclarations]: Found specification of procedure __overflow [2021-10-28 22:53:24,840 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_getc [2021-10-28 22:53:24,840 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_putc [2021-10-28 22:53:24,840 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_feof [2021-10-28 22:53:24,840 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ferror [2021-10-28 22:53:24,840 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_peekc_locked [2021-10-28 22:53:24,841 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_flockfile [2021-10-28 22:53:24,841 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_funlockfile [2021-10-28 22:53:24,841 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ftrylockfile [2021-10-28 22:53:24,841 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfscanf [2021-10-28 22:53:24,841 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfprintf [2021-10-28 22:53:24,842 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_padn [2021-10-28 22:53:24,842 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_sgetn [2021-10-28 22:53:24,842 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekoff [2021-10-28 22:53:24,842 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekpos [2021-10-28 22:53:24,843 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_free_backup_area [2021-10-28 22:53:24,843 INFO L130 BoogieDeclarations]: Found specification of procedure remove [2021-10-28 22:53:24,843 INFO L130 BoogieDeclarations]: Found specification of procedure rename [2021-10-28 22:53:24,843 INFO L130 BoogieDeclarations]: Found specification of procedure renameat [2021-10-28 22:53:24,843 INFO L130 BoogieDeclarations]: Found specification of procedure tmpfile [2021-10-28 22:53:24,844 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam [2021-10-28 22:53:24,844 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam_r [2021-10-28 22:53:24,844 INFO L130 BoogieDeclarations]: Found specification of procedure tempnam [2021-10-28 22:53:24,844 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2021-10-28 22:53:24,845 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2021-10-28 22:53:24,845 INFO L130 BoogieDeclarations]: Found specification of procedure fflush_unlocked [2021-10-28 22:53:24,845 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2021-10-28 22:53:24,845 INFO L130 BoogieDeclarations]: Found specification of procedure freopen [2021-10-28 22:53:24,845 INFO L130 BoogieDeclarations]: Found specification of procedure fdopen [2021-10-28 22:53:24,846 INFO L130 BoogieDeclarations]: Found specification of procedure fmemopen [2021-10-28 22:53:24,846 INFO L130 BoogieDeclarations]: Found specification of procedure open_memstream [2021-10-28 22:53:24,846 INFO L130 BoogieDeclarations]: Found specification of procedure setbuf [2021-10-28 22:53:24,846 INFO L130 BoogieDeclarations]: Found specification of procedure setvbuf [2021-10-28 22:53:24,847 INFO L130 BoogieDeclarations]: Found specification of procedure setbuffer [2021-10-28 22:53:24,847 INFO L130 BoogieDeclarations]: Found specification of procedure setlinebuf [2021-10-28 22:53:24,847 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2021-10-28 22:53:24,847 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-10-28 22:53:24,847 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2021-10-28 22:53:24,848 INFO L130 BoogieDeclarations]: Found specification of procedure vfprintf [2021-10-28 22:53:24,848 INFO L130 BoogieDeclarations]: Found specification of procedure vprintf [2021-10-28 22:53:24,848 INFO L130 BoogieDeclarations]: Found specification of procedure vsprintf [2021-10-28 22:53:24,848 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2021-10-28 22:53:24,849 INFO L130 BoogieDeclarations]: Found specification of procedure vsnprintf [2021-10-28 22:53:24,849 INFO L130 BoogieDeclarations]: Found specification of procedure vdprintf [2021-10-28 22:53:24,849 INFO L130 BoogieDeclarations]: Found specification of procedure dprintf [2021-10-28 22:53:24,849 INFO L130 BoogieDeclarations]: Found specification of procedure fscanf [2021-10-28 22:53:24,849 INFO L130 BoogieDeclarations]: Found specification of procedure scanf [2021-10-28 22:53:24,850 INFO L130 BoogieDeclarations]: Found specification of procedure sscanf [2021-10-28 22:53:24,850 INFO L130 BoogieDeclarations]: Found specification of procedure vfscanf [2021-10-28 22:53:24,850 INFO L130 BoogieDeclarations]: Found specification of procedure vscanf [2021-10-28 22:53:24,850 INFO L130 BoogieDeclarations]: Found specification of procedure vsscanf [2021-10-28 22:53:24,850 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2021-10-28 22:53:24,851 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2021-10-28 22:53:24,851 INFO L130 BoogieDeclarations]: Found specification of procedure getchar [2021-10-28 22:53:24,851 INFO L130 BoogieDeclarations]: Found specification of procedure getc_unlocked [2021-10-28 22:53:24,851 INFO L130 BoogieDeclarations]: Found specification of procedure getchar_unlocked [2021-10-28 22:53:24,852 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc_unlocked [2021-10-28 22:53:24,852 INFO L130 BoogieDeclarations]: Found specification of procedure fputc [2021-10-28 22:53:24,852 INFO L130 BoogieDeclarations]: Found specification of procedure putc [2021-10-28 22:53:24,852 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2021-10-28 22:53:24,852 INFO L130 BoogieDeclarations]: Found specification of procedure fputc_unlocked [2021-10-28 22:53:24,853 INFO L130 BoogieDeclarations]: Found specification of procedure putc_unlocked [2021-10-28 22:53:24,853 INFO L130 BoogieDeclarations]: Found specification of procedure putchar_unlocked [2021-10-28 22:53:24,853 INFO L130 BoogieDeclarations]: Found specification of procedure getw [2021-10-28 22:53:24,853 INFO L130 BoogieDeclarations]: Found specification of procedure putw [2021-10-28 22:53:24,853 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2021-10-28 22:53:24,854 INFO L130 BoogieDeclarations]: Found specification of procedure __getdelim [2021-10-28 22:53:24,854 INFO L130 BoogieDeclarations]: Found specification of procedure getdelim [2021-10-28 22:53:24,854 INFO L130 BoogieDeclarations]: Found specification of procedure getline [2021-10-28 22:53:24,854 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2021-10-28 22:53:24,855 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-10-28 22:53:24,855 INFO L130 BoogieDeclarations]: Found specification of procedure ungetc [2021-10-28 22:53:24,855 INFO L130 BoogieDeclarations]: Found specification of procedure fread [2021-10-28 22:53:24,855 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite [2021-10-28 22:53:24,855 INFO L130 BoogieDeclarations]: Found specification of procedure fread_unlocked [2021-10-28 22:53:24,856 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite_unlocked [2021-10-28 22:53:24,856 INFO L130 BoogieDeclarations]: Found specification of procedure fseek [2021-10-28 22:53:24,856 INFO L130 BoogieDeclarations]: Found specification of procedure ftell [2021-10-28 22:53:24,856 INFO L130 BoogieDeclarations]: Found specification of procedure rewind [2021-10-28 22:53:24,856 INFO L130 BoogieDeclarations]: Found specification of procedure fseeko [2021-10-28 22:53:24,857 INFO L130 BoogieDeclarations]: Found specification of procedure ftello [2021-10-28 22:53:24,857 INFO L130 BoogieDeclarations]: Found specification of procedure fgetpos [2021-10-28 22:53:24,857 INFO L130 BoogieDeclarations]: Found specification of procedure fsetpos [2021-10-28 22:53:24,857 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr [2021-10-28 22:53:24,858 INFO L130 BoogieDeclarations]: Found specification of procedure feof [2021-10-28 22:53:24,858 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2021-10-28 22:53:24,858 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr_unlocked [2021-10-28 22:53:24,858 INFO L130 BoogieDeclarations]: Found specification of procedure feof_unlocked [2021-10-28 22:53:24,858 INFO L130 BoogieDeclarations]: Found specification of procedure ferror_unlocked [2021-10-28 22:53:24,859 INFO L130 BoogieDeclarations]: Found specification of procedure perror [2021-10-28 22:53:24,859 INFO L130 BoogieDeclarations]: Found specification of procedure fileno [2021-10-28 22:53:24,859 INFO L130 BoogieDeclarations]: Found specification of procedure fileno_unlocked [2021-10-28 22:53:24,859 INFO L130 BoogieDeclarations]: Found specification of procedure popen [2021-10-28 22:53:24,859 INFO L130 BoogieDeclarations]: Found specification of procedure pclose [2021-10-28 22:53:24,860 INFO L130 BoogieDeclarations]: Found specification of procedure ctermid [2021-10-28 22:53:24,860 INFO L130 BoogieDeclarations]: Found specification of procedure flockfile [2021-10-28 22:53:24,860 INFO L130 BoogieDeclarations]: Found specification of procedure ftrylockfile [2021-10-28 22:53:24,860 INFO L130 BoogieDeclarations]: Found specification of procedure funlockfile [2021-10-28 22:53:24,861 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-28 22:53:24,861 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-28 22:53:24,861 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-28 22:53:24,861 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-28 22:53:24,861 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-28 22:53:24,862 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-28 22:53:24,862 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-28 22:53:24,862 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-28 22:53:24,862 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-28 22:53:24,863 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-28 22:53:24,863 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-28 22:53:24,863 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-28 22:53:24,863 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-28 22:53:24,863 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-28 22:53:24,864 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-28 22:53:24,864 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-28 22:53:24,864 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-28 22:53:24,864 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-28 22:53:24,865 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-28 22:53:24,865 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-28 22:53:24,865 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-28 22:53:24,865 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-28 22:53:24,865 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-28 22:53:24,866 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-28 22:53:24,866 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-28 22:53:24,866 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-28 22:53:24,866 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-28 22:53:24,867 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-28 22:53:24,867 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-28 22:53:24,867 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-28 22:53:24,868 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-28 22:53:24,868 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-28 22:53:24,868 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-28 22:53:24,868 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-28 22:53:24,869 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-28 22:53:24,869 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-28 22:53:24,869 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-28 22:53:24,869 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-28 22:53:24,869 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-28 22:53:24,870 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-28 22:53:24,870 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-28 22:53:24,870 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-28 22:53:24,870 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-28 22:53:24,871 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-28 22:53:24,871 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-28 22:53:24,871 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-28 22:53:24,871 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-28 22:53:24,871 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-28 22:53:24,872 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-28 22:53:24,872 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-28 22:53:24,872 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-28 22:53:24,872 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-28 22:53:24,873 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-28 22:53:24,873 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-28 22:53:24,873 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-28 22:53:24,873 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-28 22:53:24,874 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-28 22:53:24,874 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-28 22:53:24,874 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-28 22:53:24,874 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-28 22:53:24,874 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-28 22:53:24,875 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-28 22:53:24,875 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-28 22:53:24,875 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-28 22:53:24,875 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-28 22:53:24,876 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-28 22:53:24,876 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-28 22:53:24,876 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-28 22:53:24,876 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-28 22:53:24,876 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-28 22:53:24,877 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-28 22:53:24,877 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-28 22:53:24,877 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-28 22:53:24,877 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-28 22:53:24,878 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-28 22:53:24,878 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-28 22:53:24,878 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-28 22:53:24,878 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-28 22:53:24,878 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-28 22:53:24,879 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-28 22:53:24,879 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-28 22:53:24,879 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-28 22:53:24,879 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-28 22:53:24,879 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-28 22:53:24,880 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-28 22:53:24,880 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-28 22:53:24,880 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-28 22:53:24,880 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-28 22:53:24,881 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-28 22:53:24,881 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-28 22:53:24,881 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-28 22:53:24,881 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-28 22:53:24,881 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-28 22:53:24,882 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-28 22:53:24,882 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-28 22:53:24,882 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-28 22:53:24,882 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-28 22:53:24,882 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-28 22:53:24,883 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-28 22:53:24,883 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-28 22:53:24,883 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-28 22:53:24,883 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-28 22:53:24,883 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-28 22:53:24,884 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-28 22:53:24,884 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-28 22:53:24,884 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-28 22:53:24,884 INFO L130 BoogieDeclarations]: Found specification of procedure search_list [2021-10-28 22:53:24,885 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-28 22:53:24,885 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 22:53:24,885 INFO L130 BoogieDeclarations]: Found specification of procedure delete_list [2021-10-28 22:53:24,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 22:53:24,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 22:53:24,886 INFO L130 BoogieDeclarations]: Found specification of procedure insert_list [2021-10-28 22:53:24,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 22:53:24,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-28 22:53:24,886 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 22:53:24,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 22:53:24,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-28 22:53:24,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 22:53:24,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-10-28 22:53:24,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-10-28 22:53:24,887 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-10-28 22:53:26,123 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 22:53:26,124 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-28 22:53:26,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:53:26 BoogieIcfgContainer [2021-10-28 22:53:26,128 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 22:53:26,131 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 22:53:26,132 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 22:53:26,137 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 22:53:26,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 10:53:23" (1/3) ... [2021-10-28 22:53:26,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66ced34b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:53:26, skipping insertion in model container [2021-10-28 22:53:26,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:53:24" (2/3) ... [2021-10-28 22:53:26,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66ced34b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:53:26, skipping insertion in model container [2021-10-28 22:53:26,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:53:26" (3/3) ... [2021-10-28 22:53:26,152 INFO L111 eAbstractionObserver]: Analyzing ICFG list_search-2.i [2021-10-28 22:53:26,160 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 22:53:26,160 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 33 error locations. [2021-10-28 22:53:26,217 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 22:53:26,230 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 22:53:26,230 INFO L340 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2021-10-28 22:53:26,251 INFO L276 IsEmpty]: Start isEmpty. Operand has 106 states, 57 states have (on average 1.7894736842105263) internal successors, (102), 90 states have internal predecessors, (102), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-10-28 22:53:26,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-28 22:53:26,261 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:53:26,262 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:53:26,263 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting insert_listErr0REQUIRES_VIOLATION === [search_listErr0REQUIRES_VIOLATION, search_listErr1REQUIRES_VIOLATION, search_listErr2REQUIRES_VIOLATION, search_listErr3REQUIRES_VIOLATION (and 29 more)] === [2021-10-28 22:53:26,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:53:26,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1929349250, now seen corresponding path program 1 times [2021-10-28 22:53:26,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 22:53:26,285 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2044746180] [2021-10-28 22:53:26,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:53:26,286 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 22:53:26,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 22:53:26,290 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 22:53:26,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-28 22:53:26,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:26,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 22:53:26,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:53:26,678 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 22:53:26,709 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 22:53:26,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 22:53:26,799 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 22:53:26,800 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 22:53:26,801 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2044746180] [2021-10-28 22:53:26,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2044746180] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 22:53:26,802 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:53:26,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-28 22:53:26,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717754969] [2021-10-28 22:53:26,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 22:53:26,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 22:53:26,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 22:53:26,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 22:53:26,833 INFO L87 Difference]: Start difference. First operand has 106 states, 57 states have (on average 1.7894736842105263) internal successors, (102), 90 states have internal predecessors, (102), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 22:53:27,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:53:27,054 INFO L93 Difference]: Finished difference Result 102 states and 111 transitions. [2021-10-28 22:53:27,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 22:53:27,057 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-10-28 22:53:27,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:53:27,076 INFO L225 Difference]: With dead ends: 102 [2021-10-28 22:53:27,077 INFO L226 Difference]: Without dead ends: 99 [2021-10-28 22:53:27,079 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 22:53:27,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-10-28 22:53:27,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2021-10-28 22:53:27,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 56 states have (on average 1.625) internal successors, (91), 84 states have internal predecessors, (91), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-10-28 22:53:27,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 108 transitions. [2021-10-28 22:53:27,133 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 108 transitions. Word has length 10 [2021-10-28 22:53:27,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:53:27,134 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 108 transitions. [2021-10-28 22:53:27,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 22:53:27,135 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 108 transitions. [2021-10-28 22:53:27,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-28 22:53:27,136 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:53:27,136 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:53:27,156 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-28 22:53:27,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 22:53:27,352 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting insert_listErr1REQUIRES_VIOLATION === [search_listErr0REQUIRES_VIOLATION, search_listErr1REQUIRES_VIOLATION, search_listErr2REQUIRES_VIOLATION, search_listErr3REQUIRES_VIOLATION (and 29 more)] === [2021-10-28 22:53:27,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:53:27,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1929349251, now seen corresponding path program 1 times [2021-10-28 22:53:27,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 22:53:27,354 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1913863995] [2021-10-28 22:53:27,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:53:27,355 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 22:53:27,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 22:53:27,357 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 22:53:27,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-28 22:53:27,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:27,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 22:53:27,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:53:27,699 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 22:53:27,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:53:27,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 22:53:27,899 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 22:53:27,899 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 22:53:27,900 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1913863995] [2021-10-28 22:53:27,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1913863995] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 22:53:27,900 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:53:27,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-28 22:53:27,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624667150] [2021-10-28 22:53:27,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 22:53:27,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 22:53:27,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 22:53:27,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 22:53:27,904 INFO L87 Difference]: Start difference. First operand 99 states and 108 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 22:53:28,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:53:28,323 INFO L93 Difference]: Finished difference Result 95 states and 104 transitions. [2021-10-28 22:53:28,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 22:53:28,327 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-10-28 22:53:28,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:53:28,329 INFO L225 Difference]: With dead ends: 95 [2021-10-28 22:53:28,330 INFO L226 Difference]: Without dead ends: 95 [2021-10-28 22:53:28,330 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 22:53:28,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-10-28 22:53:28,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2021-10-28 22:53:28,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 56 states have (on average 1.5535714285714286) internal successors, (87), 80 states have internal predecessors, (87), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-10-28 22:53:28,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 104 transitions. [2021-10-28 22:53:28,355 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 104 transitions. Word has length 10 [2021-10-28 22:53:28,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:53:28,355 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 104 transitions. [2021-10-28 22:53:28,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 22:53:28,356 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 104 transitions. [2021-10-28 22:53:28,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-10-28 22:53:28,360 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:53:28,361 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:53:28,380 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-28 22:53:28,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 22:53:28,579 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0REQUIRES_VIOLATION === [search_listErr0REQUIRES_VIOLATION, search_listErr1REQUIRES_VIOLATION, search_listErr2REQUIRES_VIOLATION, search_listErr3REQUIRES_VIOLATION (and 29 more)] === [2021-10-28 22:53:28,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:53:28,580 INFO L85 PathProgramCache]: Analyzing trace with hash -841914658, now seen corresponding path program 1 times [2021-10-28 22:53:28,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 22:53:28,583 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1199301692] [2021-10-28 22:53:28,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:53:28,584 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 22:53:28,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 22:53:28,587 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 22:53:28,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-28 22:53:28,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:28,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 22:53:28,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:53:29,161 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 29 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-28 22:53:29,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 22:53:29,457 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 1 proven. 32 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-28 22:53:29,457 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 22:53:29,457 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1199301692] [2021-10-28 22:53:29,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1199301692] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-28 22:53:29,458 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 22:53:29,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2021-10-28 22:53:29,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525112386] [2021-10-28 22:53:29,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 22:53:29,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 22:53:29,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 22:53:29,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-28 22:53:29,461 INFO L87 Difference]: Start difference. First operand 95 states and 104 transitions. Second operand has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-10-28 22:53:30,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:53:30,034 INFO L93 Difference]: Finished difference Result 165 states and 182 transitions. [2021-10-28 22:53:30,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 22:53:30,035 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 44 [2021-10-28 22:53:30,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:53:30,038 INFO L225 Difference]: With dead ends: 165 [2021-10-28 22:53:30,038 INFO L226 Difference]: Without dead ends: 165 [2021-10-28 22:53:30,039 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-10-28 22:53:30,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-10-28 22:53:30,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 100. [2021-10-28 22:53:30,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 60 states have (on average 1.5166666666666666) internal successors, (91), 84 states have internal predecessors, (91), 9 states have call successors, (9), 7 states have call predecessors, (9), 6 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2021-10-28 22:53:30,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 109 transitions. [2021-10-28 22:53:30,075 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 109 transitions. Word has length 44 [2021-10-28 22:53:30,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:53:30,076 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 109 transitions. [2021-10-28 22:53:30,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-10-28 22:53:30,076 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 109 transitions. [2021-10-28 22:53:30,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-10-28 22:53:30,079 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:53:30,079 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 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 22:53:30,102 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-28 22:53:30,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 22:53:30,294 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0REQUIRES_VIOLATION === [search_listErr0REQUIRES_VIOLATION, search_listErr1REQUIRES_VIOLATION, search_listErr2REQUIRES_VIOLATION, search_listErr3REQUIRES_VIOLATION (and 29 more)] === [2021-10-28 22:53:30,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:53:30,295 INFO L85 PathProgramCache]: Analyzing trace with hash 124950246, now seen corresponding path program 1 times [2021-10-28 22:53:30,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 22:53:30,296 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1933942113] [2021-10-28 22:53:30,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:53:30,297 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 22:53:30,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 22:53:30,298 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 22:53:30,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-28 22:53:30,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:30,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 22:53:30,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:53:30,892 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 22:53:30,965 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-10-28 22:53:30,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 22:53:31,178 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-10-28 22:53:31,178 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 22:53:31,178 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1933942113] [2021-10-28 22:53:31,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1933942113] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 22:53:31,179 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:53:31,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-28 22:53:31,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530762102] [2021-10-28 22:53:31,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 22:53:31,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 22:53:31,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 22:53:31,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 22:53:31,181 INFO L87 Difference]: Start difference. First operand 100 states and 109 transitions. Second operand has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-10-28 22:53:31,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:53:31,676 INFO L93 Difference]: Finished difference Result 127 states and 140 transitions. [2021-10-28 22:53:31,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 22:53:31,677 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 44 [2021-10-28 22:53:31,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:53:31,681 INFO L225 Difference]: With dead ends: 127 [2021-10-28 22:53:31,681 INFO L226 Difference]: Without dead ends: 127 [2021-10-28 22:53:31,681 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 83 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-28 22:53:31,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-10-28 22:53:31,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 102. [2021-10-28 22:53:31,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 62 states have (on average 1.532258064516129) internal successors, (95), 86 states have internal predecessors, (95), 9 states have call successors, (9), 7 states have call predecessors, (9), 6 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2021-10-28 22:53:31,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 113 transitions. [2021-10-28 22:53:31,694 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 113 transitions. Word has length 44 [2021-10-28 22:53:31,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:53:31,695 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 113 transitions. [2021-10-28 22:53:31,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-10-28 22:53:31,696 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 113 transitions. [2021-10-28 22:53:31,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-10-28 22:53:31,698 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:53:31,698 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 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 22:53:31,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-28 22:53:31,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 22:53:31,915 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr1REQUIRES_VIOLATION === [search_listErr0REQUIRES_VIOLATION, search_listErr1REQUIRES_VIOLATION, search_listErr2REQUIRES_VIOLATION, search_listErr3REQUIRES_VIOLATION (and 29 more)] === [2021-10-28 22:53:31,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:53:31,915 INFO L85 PathProgramCache]: Analyzing trace with hash 124950247, now seen corresponding path program 1 times [2021-10-28 22:53:31,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 22:53:31,916 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [276148085] [2021-10-28 22:53:31,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:53:31,917 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 22:53:31,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 22:53:31,919 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 22:53:31,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-28 22:53:32,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:32,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 22:53:32,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:53:32,557 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 22:53:32,726 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-10-28 22:53:32,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 22:53:33,208 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-10-28 22:53:33,208 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 22:53:33,208 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [276148085] [2021-10-28 22:53:33,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [276148085] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 22:53:33,209 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:53:33,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-28 22:53:33,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925990980] [2021-10-28 22:53:33,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 22:53:33,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 22:53:33,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 22:53:33,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-28 22:53:33,212 INFO L87 Difference]: Start difference. First operand 102 states and 113 transitions. Second operand has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 8 states have internal predecessors, (33), 1 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2021-10-28 22:53:34,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:53:34,266 INFO L93 Difference]: Finished difference Result 147 states and 161 transitions. [2021-10-28 22:53:34,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 22:53:34,272 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 8 states have internal predecessors, (33), 1 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) Word has length 44 [2021-10-28 22:53:34,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:53:34,275 INFO L225 Difference]: With dead ends: 147 [2021-10-28 22:53:34,275 INFO L226 Difference]: Without dead ends: 147 [2021-10-28 22:53:34,276 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-10-28 22:53:34,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-10-28 22:53:34,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 113. [2021-10-28 22:53:34,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 72 states have (on average 1.5694444444444444) internal successors, (113), 96 states have internal predecessors, (113), 9 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (10), 9 states have call predecessors, (10), 8 states have call successors, (10) [2021-10-28 22:53:34,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 132 transitions. [2021-10-28 22:53:34,289 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 132 transitions. Word has length 44 [2021-10-28 22:53:34,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:53:34,290 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 132 transitions. [2021-10-28 22:53:34,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 8 states have internal predecessors, (33), 1 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2021-10-28 22:53:34,291 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 132 transitions. [2021-10-28 22:53:34,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-10-28 22:53:34,293 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:53:34,293 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 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 22:53:34,313 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-28 22:53:34,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 22:53:34,513 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting search_listErr0REQUIRES_VIOLATION === [search_listErr0REQUIRES_VIOLATION, search_listErr1REQUIRES_VIOLATION, search_listErr2REQUIRES_VIOLATION, search_listErr3REQUIRES_VIOLATION (and 29 more)] === [2021-10-28 22:53:34,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:53:34,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1335329181, now seen corresponding path program 1 times [2021-10-28 22:53:34,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 22:53:34,515 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [668998462] [2021-10-28 22:53:34,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:53:34,515 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 22:53:34,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 22:53:34,517 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 22:53:34,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-28 22:53:34,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:34,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 22:53:34,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:53:35,121 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-10-28 22:53:35,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 22:53:35,299 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-10-28 22:53:35,299 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 22:53:35,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [668998462] [2021-10-28 22:53:35,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [668998462] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 22:53:35,300 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:53:35,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-28 22:53:35,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755055070] [2021-10-28 22:53:35,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 22:53:35,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 22:53:35,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 22:53:35,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 22:53:35,302 INFO L87 Difference]: Start difference. First operand 113 states and 132 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-10-28 22:53:35,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:53:35,561 INFO L93 Difference]: Finished difference Result 134 states and 143 transitions. [2021-10-28 22:53:35,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 22:53:35,562 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 48 [2021-10-28 22:53:35,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:53:35,564 INFO L225 Difference]: With dead ends: 134 [2021-10-28 22:53:35,564 INFO L226 Difference]: Without dead ends: 134 [2021-10-28 22:53:35,564 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-28 22:53:35,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-10-28 22:53:35,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 113. [2021-10-28 22:53:35,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 72 states have (on average 1.5416666666666667) internal successors, (111), 96 states have internal predecessors, (111), 9 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (10), 9 states have call predecessors, (10), 8 states have call successors, (10) [2021-10-28 22:53:35,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 130 transitions. [2021-10-28 22:53:35,591 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 130 transitions. Word has length 48 [2021-10-28 22:53:35,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:53:35,591 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 130 transitions. [2021-10-28 22:53:35,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-10-28 22:53:35,592 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 130 transitions. [2021-10-28 22:53:35,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-28 22:53:35,600 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:53:35,600 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 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 22:53:35,620 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-28 22:53:35,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 22:53:35,801 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0REQUIRES_VIOLATION === [search_listErr0REQUIRES_VIOLATION, search_listErr1REQUIRES_VIOLATION, search_listErr2REQUIRES_VIOLATION, search_listErr3REQUIRES_VIOLATION (and 29 more)] === [2021-10-28 22:53:35,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:53:35,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1343794684, now seen corresponding path program 1 times [2021-10-28 22:53:35,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 22:53:35,802 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2004690222] [2021-10-28 22:53:35,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:53:35,803 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 22:53:35,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 22:53:35,804 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 22:53:35,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-28 22:53:36,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:36,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-28 22:53:36,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:53:36,429 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 22:53:36,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-28 22:53:36,811 INFO L354 Elim1Store]: treesize reduction 33, result has 43.1 percent of original size [2021-10-28 22:53:36,811 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 2 case distinctions, treesize of input 28 treesize of output 41 [2021-10-28 22:53:37,094 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 48 treesize of output 36 [2021-10-28 22:53:37,334 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-28 22:53:37,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 22:53:56,750 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 23 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-28 22:53:56,750 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 22:53:56,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2004690222] [2021-10-28 22:53:56,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2004690222] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-28 22:53:56,751 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 22:53:56,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-28 22:53:56,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163488185] [2021-10-28 22:53:56,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-28 22:53:56,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 22:53:56,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-28 22:53:56,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=384, Unknown=6, NotChecked=0, Total=462 [2021-10-28 22:53:56,754 INFO L87 Difference]: Start difference. First operand 113 states and 130 transitions. Second operand has 22 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 18 states have internal predecessors, (52), 3 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2021-10-28 22:54:12,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:54:12,181 INFO L93 Difference]: Finished difference Result 144 states and 159 transitions. [2021-10-28 22:54:12,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-28 22:54:12,182 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 18 states have internal predecessors, (52), 3 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) Word has length 47 [2021-10-28 22:54:12,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:54:12,184 INFO L225 Difference]: With dead ends: 144 [2021-10-28 22:54:12,184 INFO L226 Difference]: Without dead ends: 144 [2021-10-28 22:54:12,186 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 19.8s TimeCoverageRelationStatistics Valid=232, Invalid=952, Unknown=6, NotChecked=0, Total=1190 [2021-10-28 22:54:12,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-10-28 22:54:12,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 118. [2021-10-28 22:54:12,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 77 states have (on average 1.5324675324675325) internal successors, (118), 101 states have internal predecessors, (118), 9 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2021-10-28 22:54:12,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 136 transitions. [2021-10-28 22:54:12,197 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 136 transitions. Word has length 47 [2021-10-28 22:54:12,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:54:12,198 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 136 transitions. [2021-10-28 22:54:12,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 18 states have internal predecessors, (52), 3 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2021-10-28 22:54:12,198 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 136 transitions. [2021-10-28 22:54:12,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-28 22:54:12,200 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:54:12,201 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 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 22:54:12,225 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-10-28 22:54:12,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 22:54:12,421 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr1REQUIRES_VIOLATION === [search_listErr0REQUIRES_VIOLATION, search_listErr1REQUIRES_VIOLATION, search_listErr2REQUIRES_VIOLATION, search_listErr3REQUIRES_VIOLATION (and 29 more)] === [2021-10-28 22:54:12,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:54:12,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1343794683, now seen corresponding path program 1 times [2021-10-28 22:54:12,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 22:54:12,430 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1216876891] [2021-10-28 22:54:12,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:54:12,431 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 22:54:12,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 22:54:12,432 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 22:54:12,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-28 22:54:12,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:54:12,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-28 22:54:12,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:54:13,017 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 22:54:13,023 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 22:54:13,392 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-28 22:54:13,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-28 22:54:13,655 INFO L354 Elim1Store]: treesize reduction 4, result has 71.4 percent of original size [2021-10-28 22:54:13,656 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 22 treesize of output 22 [2021-10-28 22:54:13,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-10-28 22:54:13,895 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 44 treesize of output 32 [2021-10-28 22:54:13,900 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 29 treesize of output 21 [2021-10-28 22:54:14,119 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 23 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-28 22:54:14,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 22:54:34,667 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 23 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-28 22:54:34,667 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 22:54:34,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1216876891] [2021-10-28 22:54:34,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1216876891] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-28 22:54:34,668 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 22:54:34,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-28 22:54:34,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817064744] [2021-10-28 22:54:34,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-28 22:54:34,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 22:54:34,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-28 22:54:34,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=392, Unknown=4, NotChecked=0, Total=462 [2021-10-28 22:54:34,670 INFO L87 Difference]: Start difference. First operand 118 states and 136 transitions. Second operand has 22 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 18 states have internal predecessors, (52), 3 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2021-10-28 22:55:30,229 WARN L207 SmtUtils]: Spent 12.69 s on a formula simplification that was a NOOP. DAG size: 48 [2021-10-28 22:55:46,501 WARN L207 SmtUtils]: Spent 14.47 s on a formula simplification that was a NOOP. DAG size: 61 [2021-10-28 22:56:03,606 WARN L207 SmtUtils]: Spent 13.29 s on a formula simplification that was a NOOP. DAG size: 55 [2021-10-28 22:56:09,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:56:09,287 INFO L93 Difference]: Finished difference Result 154 states and 169 transitions. [2021-10-28 22:56:09,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-28 22:56:09,289 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 18 states have internal predecessors, (52), 3 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) Word has length 47 [2021-10-28 22:56:09,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:56:09,292 INFO L225 Difference]: With dead ends: 154 [2021-10-28 22:56:09,293 INFO L226 Difference]: Without dead ends: 154 [2021-10-28 22:56:09,295 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 73.4s TimeCoverageRelationStatistics Valid=322, Invalid=1396, Unknown=4, NotChecked=0, Total=1722 [2021-10-28 22:56:09,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-10-28 22:56:09,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 118. [2021-10-28 22:56:09,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 77 states have (on average 1.5194805194805194) internal successors, (117), 101 states have internal predecessors, (117), 9 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2021-10-28 22:56:09,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 135 transitions. [2021-10-28 22:56:09,308 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 135 transitions. Word has length 47 [2021-10-28 22:56:09,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:56:09,309 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 135 transitions. [2021-10-28 22:56:09,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 18 states have internal predecessors, (52), 3 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2021-10-28 22:56:09,310 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 135 transitions. [2021-10-28 22:56:09,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-28 22:56:09,313 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:56:09,314 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 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 22:56:09,337 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-10-28 22:56:09,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 22:56:09,530 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting search_listErr0REQUIRES_VIOLATION === [search_listErr0REQUIRES_VIOLATION, search_listErr1REQUIRES_VIOLATION, search_listErr2REQUIRES_VIOLATION, search_listErr3REQUIRES_VIOLATION (and 29 more)] === [2021-10-28 22:56:09,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:56:09,530 INFO L85 PathProgramCache]: Analyzing trace with hash -354583109, now seen corresponding path program 1 times [2021-10-28 22:56:09,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 22:56:09,531 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2002484162] [2021-10-28 22:56:09,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:56:09,531 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 22:56:09,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 22:56:09,533 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 22:56:09,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-28 22:56:10,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:56:10,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-28 22:56:10,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:56:10,517 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-28 22:56:10,859 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 16 treesize of output 8 [2021-10-28 22:56:10,995 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-28 22:56:10,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 22:56:11,804 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-28 22:56:11,804 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 22:56:11,804 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2002484162] [2021-10-28 22:56:11,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2002484162] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-28 22:56:11,805 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 22:56:11,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 17 [2021-10-28 22:56:11,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717626078] [2021-10-28 22:56:11,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-28 22:56:11,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 22:56:11,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-28 22:56:11,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2021-10-28 22:56:11,807 INFO L87 Difference]: Start difference. First operand 118 states and 135 transitions. Second operand has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 14 states have internal predecessors, (45), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2021-10-28 22:56:15,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:56:15,083 INFO L93 Difference]: Finished difference Result 146 states and 155 transitions. [2021-10-28 22:56:15,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-28 22:56:15,084 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 14 states have internal predecessors, (45), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) Word has length 51 [2021-10-28 22:56:15,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:56:15,086 INFO L225 Difference]: With dead ends: 146 [2021-10-28 22:56:15,086 INFO L226 Difference]: Without dead ends: 146 [2021-10-28 22:56:15,087 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=241, Invalid=1019, Unknown=0, NotChecked=0, Total=1260 [2021-10-28 22:56:15,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-10-28 22:56:15,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 118. [2021-10-28 22:56:15,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 77 states have (on average 1.5064935064935066) internal successors, (116), 101 states have internal predecessors, (116), 9 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2021-10-28 22:56:15,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 134 transitions. [2021-10-28 22:56:15,097 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 134 transitions. Word has length 51 [2021-10-28 22:56:15,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:56:15,098 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 134 transitions. [2021-10-28 22:56:15,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 14 states have internal predecessors, (45), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2021-10-28 22:56:15,098 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 134 transitions. [2021-10-28 22:56:15,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-10-28 22:56:15,103 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:56:15,103 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 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 22:56:15,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-28 22:56:15,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 22:56:15,319 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0REQUIRES_VIOLATION === [search_listErr0REQUIRES_VIOLATION, search_listErr1REQUIRES_VIOLATION, search_listErr2REQUIRES_VIOLATION, search_listErr3REQUIRES_VIOLATION (and 29 more)] === [2021-10-28 22:56:15,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:56:15,319 INFO L85 PathProgramCache]: Analyzing trace with hash 402807334, now seen corresponding path program 2 times [2021-10-28 22:56:15,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 22:56:15,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [380791059] [2021-10-28 22:56:15,320 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 22:56:15,321 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 22:56:15,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 22:56:15,323 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 22:56:15,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-28 22:56:16,249 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 22:56:16,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 22:56:16,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 37 conjunts are in the unsatisfiable core [2021-10-28 22:56:16,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:56:16,337 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 22:56:16,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-28 22:56:16,833 INFO L354 Elim1Store]: treesize reduction 33, result has 43.1 percent of original size [2021-10-28 22:56:16,834 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 2 case distinctions, treesize of input 29 treesize of output 42 [2021-10-28 22:56:17,699 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-28 22:56:22,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:22,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:22,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:22,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:22,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:22,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:22,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:22,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:22,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:22,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:22,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:22,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:22,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:22,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:22,187 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 22:56:22,224 INFO L354 Elim1Store]: treesize reduction 25, result has 37.5 percent of original size [2021-10-28 22:56:22,225 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 14 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 99 treesize of output 102 [2021-10-28 22:56:22,309 INFO L354 Elim1Store]: treesize reduction 144, result has 30.4 percent of original size [2021-10-28 22:56:22,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 92 treesize of output 123 [2021-10-28 22:56:23,049 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 125 treesize of output 105 [2021-10-28 22:56:23,923 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-28 22:56:23,924 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 104 treesize of output 71 [2021-10-28 22:56:24,689 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 35 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 22:56:24,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 22:56:28,690 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (v_~head~0.base_175 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (or (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| v_~head~0.base_175 (_ bv1 1)) (select (select (store |c_#memory_$Pointer$.base| v_~head~0.base_175 (store (store (store (store (store (select |c_#memory_$Pointer$.base| v_~head~0.base_175) (_ bv0 32) v_DerPreprocessor_5) (_ bv1 32) v_DerPreprocessor_6) (_ bv2 32) v_DerPreprocessor_7) (_ bv3 32) v_DerPreprocessor_8) (_ bv4 32) c_~head~0.base)) c_~head~0.base) (bvadd (_ bv4 32) c_~head~0.offset)))))))))))) (_ bv1 1))) (not (= (_ bv0 1) (bvneg (select |c_#valid| v_~head~0.base_175)))))) is different from false [2021-10-28 22:56:30,777 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (v_~head~0.base_175 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (select |c_old(#valid)| v_~head~0.base_175))) (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_old(#valid)| v_~head~0.base_175 (_ bv1 1)) (select (select (store |c_old(#memory_$Pointer$.base)| v_~head~0.base_175 (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| v_~head~0.base_175) (_ bv0 32) v_DerPreprocessor_5) (_ bv1 32) v_DerPreprocessor_6) (_ bv2 32) v_DerPreprocessor_7) (_ bv3 32) v_DerPreprocessor_8) (_ bv4 32) |c_old(~head~0.base)|)) |c_old(~head~0.base)|) (bvadd (_ bv4 32) |c_old(~head~0.offset)|)))))))))))))) (_ bv1 1)))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse0 (bvadd (_ bv4 32) c_~head~0.offset))) (select (select |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| c_~head~0.base) .cse0)) (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$.offset| c_~head~0.base) .cse0)))))))) (_ bv1 1)))) is different from true [2021-10-28 22:56:32,968 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (v_~head~0.base_175 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (select |c_old(#valid)| v_~head~0.base_175))) (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_old(#valid)| v_~head~0.base_175 (_ bv1 1)) (select (select (store |c_old(#memory_$Pointer$.base)| v_~head~0.base_175 (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| v_~head~0.base_175) (_ bv0 32) v_DerPreprocessor_5) (_ bv1 32) v_DerPreprocessor_6) (_ bv2 32) v_DerPreprocessor_7) (_ bv3 32) v_DerPreprocessor_8) (_ bv4 32) |c_old(~head~0.base)|)) |c_old(~head~0.base)|) (bvadd (_ bv4 32) |c_old(~head~0.offset)|)))))))))))))) (_ bv1 1)))))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse0 (bvadd (_ bv4 32) c_insert_list_~l.offset))) (select (select |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| c_insert_list_~l.base) .cse0)) (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$.offset| c_insert_list_~l.base) .cse0))))))))))) is different from true [2021-10-28 22:56:35,059 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (v_~head~0.base_175 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (select |c_old(#valid)| v_~head~0.base_175))) (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_old(#valid)| v_~head~0.base_175 (_ bv1 1)) (select (select (store |c_old(#memory_$Pointer$.base)| v_~head~0.base_175 (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| v_~head~0.base_175) (_ bv0 32) v_DerPreprocessor_5) (_ bv1 32) v_DerPreprocessor_6) (_ bv2 32) v_DerPreprocessor_7) (_ bv3 32) v_DerPreprocessor_8) (_ bv4 32) |c_old(~head~0.base)|)) |c_old(~head~0.base)|) (bvadd (_ bv4 32) |c_old(~head~0.offset)|)))))))))))))) (_ bv1 1)))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| c_insert_list_~l.base (store (select |c_#memory_$Pointer$.base| c_insert_list_~l.base) (bvadd (_ bv4 32) c_insert_list_~l.offset) c_~head~0.base)) c_~head~0.base) (bvadd (_ bv4 32) c_~head~0.offset))))))) (_ bv1 1)))) is different from true [2021-10-28 22:56:37,172 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (v_~head~0.base_175 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (select |c_old(#valid)| v_~head~0.base_175))) (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_old(#valid)| v_~head~0.base_175 (_ bv1 1)) (select (select (store |c_old(#memory_$Pointer$.base)| v_~head~0.base_175 (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| v_~head~0.base_175) (_ bv0 32) v_DerPreprocessor_5) (_ bv1 32) v_DerPreprocessor_6) (_ bv2 32) v_DerPreprocessor_7) (_ bv3 32) v_DerPreprocessor_8) (_ bv4 32) |c_old(~head~0.base)|)) |c_old(~head~0.base)|) (bvadd (_ bv4 32) |c_old(~head~0.offset)|)))))))))))))) (_ bv1 1)))))) (forall ((v_DerPreprocessor_10 (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| c_insert_list_~l.base (store (store (store (store (store (select |c_#memory_$Pointer$.base| c_insert_list_~l.base) c_insert_list_~l.offset v_DerPreprocessor_9) (bvadd (_ bv1 32) c_insert_list_~l.offset) v_DerPreprocessor_10) (bvadd (_ bv2 32) c_insert_list_~l.offset) v_DerPreprocessor_11) (bvadd (_ bv3 32) c_insert_list_~l.offset) v_DerPreprocessor_12) (bvadd (_ bv4 32) c_insert_list_~l.offset) c_~head~0.base)) c_~head~0.base) (bvadd (_ bv4 32) c_~head~0.offset)))))))))) (_ bv1 1))))) is different from true [2021-10-28 22:56:39,388 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (v_~head~0.base_175 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (select |c_old(#valid)| v_~head~0.base_175))) (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_old(#valid)| v_~head~0.base_175 (_ bv1 1)) (select (select (store |c_old(#memory_$Pointer$.base)| v_~head~0.base_175 (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| v_~head~0.base_175) (_ bv0 32) v_DerPreprocessor_5) (_ bv1 32) v_DerPreprocessor_6) (_ bv2 32) v_DerPreprocessor_7) (_ bv3 32) v_DerPreprocessor_8) (_ bv4 32) |c_old(~head~0.base)|)) |c_old(~head~0.base)|) (bvadd (_ bv4 32) |c_old(~head~0.offset)|)))))))))))))) (_ bv1 1)))))) (forall ((v_DerPreprocessor_10 (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32)) (v_insert_list_~l.base_116 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_insert_list_~l.base_116))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| v_insert_list_~l.base_116 (_ bv1 1)) (select (select (store |c_#memory_$Pointer$.base| v_insert_list_~l.base_116 (store (store (store (store (store (select |c_#memory_$Pointer$.base| v_insert_list_~l.base_116) (_ bv0 32) v_DerPreprocessor_9) (_ bv1 32) v_DerPreprocessor_10) (_ bv2 32) v_DerPreprocessor_11) (_ bv3 32) v_DerPreprocessor_12) (_ bv4 32) c_~head~0.base)) c_~head~0.base) (bvadd (_ bv4 32) c_~head~0.offset)))))))))))) (_ bv1 1)))))) is different from true [2021-10-28 22:56:53,644 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 22:56:53,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [380791059] [2021-10-28 22:56:53,645 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-28 22:56:53,645 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1647628272] [2021-10-28 22:56:53,645 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 22:56:53,645 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-28 22:56:53,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/cvc4 [2021-10-28 22:56:53,648 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-28 22:56:53,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-10-28 22:56:54,670 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 22:56:54,670 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 22:56:54,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 38 conjunts are in the unsatisfiable core [2021-10-28 22:56:54,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:56:54,731 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 22:56:54,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-28 22:56:54,992 INFO L354 Elim1Store]: treesize reduction 33, result has 43.1 percent of original size [2021-10-28 22:56:54,993 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 2 case distinctions, treesize of input 30 treesize of output 43 [2021-10-28 22:56:55,383 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-28 22:56:55,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:55,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:55,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:55,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:55,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:55,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:55,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:55,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:55,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:55,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:55,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:55,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:55,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:56:55,657 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 22:56:55,696 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-10-28 22:56:55,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 14 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 100 [2021-10-28 22:56:55,776 INFO L354 Elim1Store]: treesize reduction 112, result has 29.6 percent of original size [2021-10-28 22:56:55,777 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 82 treesize of output 105 [2021-10-28 22:56:56,221 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 125 treesize of output 105 [2021-10-28 22:56:57,118 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-28 22:56:57,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 104 treesize of output 71 [2021-10-28 22:56:57,601 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 35 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 22:56:57,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 22:57:01,194 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_19 (_ BitVec 32)) (v_~head~0.base_189 (_ BitVec 32)) (v_DerPreprocessor_20 (_ BitVec 32)) (v_DerPreprocessor_17 (_ BitVec 32)) (v_DerPreprocessor_18 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select |c_#valid| v_~head~0.base_189))))))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| v_~head~0.base_189 (_ bv1 1)) (select (select (store |c_#memory_$Pointer$.base| v_~head~0.base_189 (store (store (store (store (store (select |c_#memory_$Pointer$.base| v_~head~0.base_189) (_ bv0 32) v_DerPreprocessor_17) (_ bv1 32) v_DerPreprocessor_18) (_ bv2 32) v_DerPreprocessor_19) (_ bv3 32) v_DerPreprocessor_20) (_ bv4 32) c_~head~0.base)) c_~head~0.base) (bvadd (_ bv4 32) c_~head~0.offset))))))))))) is different from false [2021-10-28 22:57:03,302 WARN L860 $PredicateComparison]: unable to prove that (or (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse0 (bvadd (_ bv4 32) c_~head~0.offset))) (select (select |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| c_~head~0.base) .cse0)) (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$.offset| c_~head~0.base) .cse0)))))))) (_ bv1 1))) (exists ((v_DerPreprocessor_19 (_ BitVec 32)) (v_~head~0.base_189 (_ BitVec 32)) (v_DerPreprocessor_20 (_ BitVec 32)) (v_DerPreprocessor_17 (_ BitVec 32)) (v_DerPreprocessor_18 (_ BitVec 32))) (and (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_old(#valid)| v_~head~0.base_189 (_ bv1 1)) (select (select (store |c_old(#memory_$Pointer$.base)| v_~head~0.base_189 (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| v_~head~0.base_189) (_ bv0 32) v_DerPreprocessor_17) (_ bv1 32) v_DerPreprocessor_18) (_ bv2 32) v_DerPreprocessor_19) (_ bv3 32) v_DerPreprocessor_20) (_ bv4 32) |c_old(~head~0.base)|)) |c_old(~head~0.base)|) (bvadd (_ bv4 32) |c_old(~head~0.offset)|))))))))) (_ bv1 1)))) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_old(#valid)| v_~head~0.base_189)))))))))) is different from true [2021-10-28 22:57:05,436 WARN L860 $PredicateComparison]: unable to prove that (or (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse0 (bvadd (_ bv4 32) c_insert_list_~l.offset))) (select (select |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| c_insert_list_~l.base) .cse0)) (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$.offset| c_insert_list_~l.base) .cse0))))))))) (_ bv1 1))) (exists ((v_DerPreprocessor_19 (_ BitVec 32)) (v_~head~0.base_189 (_ BitVec 32)) (v_DerPreprocessor_20 (_ BitVec 32)) (v_DerPreprocessor_17 (_ BitVec 32)) (v_DerPreprocessor_18 (_ BitVec 32))) (and (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_old(#valid)| v_~head~0.base_189 (_ bv1 1)) (select (select (store |c_old(#memory_$Pointer$.base)| v_~head~0.base_189 (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| v_~head~0.base_189) (_ bv0 32) v_DerPreprocessor_17) (_ bv1 32) v_DerPreprocessor_18) (_ bv2 32) v_DerPreprocessor_19) (_ bv3 32) v_DerPreprocessor_20) (_ bv4 32) |c_old(~head~0.base)|)) |c_old(~head~0.base)|) (bvadd (_ bv4 32) |c_old(~head~0.offset)|))))))))) (_ bv1 1)))) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_old(#valid)| v_~head~0.base_189)))))))))) is different from true [2021-10-28 22:57:07,535 WARN L860 $PredicateComparison]: unable to prove that (or (not (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| c_insert_list_~l.base)) (_ bv1 1)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| c_insert_list_~l.base (store (select |c_#memory_$Pointer$.base| c_insert_list_~l.base) (bvadd (_ bv4 32) c_insert_list_~l.offset) c_~head~0.base)) c_~head~0.base) (bvadd (_ bv4 32) c_~head~0.offset)))))))))) (_ bv1 1))) (exists ((v_DerPreprocessor_19 (_ BitVec 32)) (v_~head~0.base_189 (_ BitVec 32)) (v_DerPreprocessor_20 (_ BitVec 32)) (v_DerPreprocessor_17 (_ BitVec 32)) (v_DerPreprocessor_18 (_ BitVec 32))) (and (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_old(#valid)| v_~head~0.base_189 (_ bv1 1)) (select (select (store |c_old(#memory_$Pointer$.base)| v_~head~0.base_189 (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| v_~head~0.base_189) (_ bv0 32) v_DerPreprocessor_17) (_ bv1 32) v_DerPreprocessor_18) (_ bv2 32) v_DerPreprocessor_19) (_ bv3 32) v_DerPreprocessor_20) (_ bv4 32) |c_old(~head~0.base)|)) |c_old(~head~0.base)|) (bvadd (_ bv4 32) |c_old(~head~0.offset)|))))))))) (_ bv1 1)))) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_old(#valid)| v_~head~0.base_189)))))))))) is different from true [2021-10-28 22:57:09,657 WARN L860 $PredicateComparison]: unable to prove that (or (forall ((v_DerPreprocessor_21 (_ BitVec 32)) (v_DerPreprocessor_24 (_ BitVec 32)) (v_DerPreprocessor_22 (_ BitVec 32)) (v_DerPreprocessor_23 (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| c_insert_list_~l.base (store (store (store (store (store (select |c_#memory_$Pointer$.base| c_insert_list_~l.base) c_insert_list_~l.offset v_DerPreprocessor_21) (bvadd (_ bv1 32) c_insert_list_~l.offset) v_DerPreprocessor_22) (bvadd (_ bv2 32) c_insert_list_~l.offset) v_DerPreprocessor_23) (bvadd (_ bv3 32) c_insert_list_~l.offset) v_DerPreprocessor_24) (bvadd (_ bv4 32) c_insert_list_~l.offset) c_~head~0.base)) c_~head~0.base) (bvadd (_ bv4 32) c_~head~0.offset))))))))))) (_ bv1 1)))) (not (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| c_insert_list_~l.base)) (_ bv1 1)))) (exists ((v_DerPreprocessor_19 (_ BitVec 32)) (v_~head~0.base_189 (_ BitVec 32)) (v_DerPreprocessor_20 (_ BitVec 32)) (v_DerPreprocessor_17 (_ BitVec 32)) (v_DerPreprocessor_18 (_ BitVec 32))) (and (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_old(#valid)| v_~head~0.base_189 (_ bv1 1)) (select (select (store |c_old(#memory_$Pointer$.base)| v_~head~0.base_189 (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| v_~head~0.base_189) (_ bv0 32) v_DerPreprocessor_17) (_ bv1 32) v_DerPreprocessor_18) (_ bv2 32) v_DerPreprocessor_19) (_ bv3 32) v_DerPreprocessor_20) (_ bv4 32) |c_old(~head~0.base)|)) |c_old(~head~0.base)|) (bvadd (_ bv4 32) |c_old(~head~0.offset)|))))))))) (_ bv1 1)))) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_old(#valid)| v_~head~0.base_189)))))))))) is different from true [2021-10-28 22:57:11,818 WARN L860 $PredicateComparison]: unable to prove that (or (forall ((v_DerPreprocessor_21 (_ BitVec 32)) (v_DerPreprocessor_24 (_ BitVec 32)) (v_DerPreprocessor_22 (_ BitVec 32)) (v_insert_list_~l.base_123 (_ BitVec 32)) (v_DerPreprocessor_23 (_ BitVec 32))) (or (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| v_insert_list_~l.base_123 (_ bv1 1)) (select (select (store |c_#memory_$Pointer$.base| v_insert_list_~l.base_123 (store (store (store (store (store (select |c_#memory_$Pointer$.base| v_insert_list_~l.base_123) (_ bv0 32) v_DerPreprocessor_21) (_ bv1 32) v_DerPreprocessor_22) (_ bv2 32) v_DerPreprocessor_23) (_ bv3 32) v_DerPreprocessor_24) (_ bv4 32) c_~head~0.base)) c_~head~0.base) (bvadd (_ bv4 32) c_~head~0.offset)))))))))))))))) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_insert_list_~l.base_123))))))) (exists ((v_DerPreprocessor_19 (_ BitVec 32)) (v_~head~0.base_189 (_ BitVec 32)) (v_DerPreprocessor_20 (_ BitVec 32)) (v_DerPreprocessor_17 (_ BitVec 32)) (v_DerPreprocessor_18 (_ BitVec 32))) (and (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_old(#valid)| v_~head~0.base_189 (_ bv1 1)) (select (select (store |c_old(#memory_$Pointer$.base)| v_~head~0.base_189 (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| v_~head~0.base_189) (_ bv0 32) v_DerPreprocessor_17) (_ bv1 32) v_DerPreprocessor_18) (_ bv2 32) v_DerPreprocessor_19) (_ bv3 32) v_DerPreprocessor_20) (_ bv4 32) |c_old(~head~0.base)|)) |c_old(~head~0.base)|) (bvadd (_ bv4 32) |c_old(~head~0.offset)|))))))))) (_ bv1 1)))) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_old(#valid)| v_~head~0.base_189)))))))))) is different from true [2021-10-28 22:57:19,211 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-28 22:57:19,211 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734273147] [2021-10-28 22:57:19,211 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 22:57:19,211 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:57:19,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:57:19,220 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:57:19,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-28 22:57:19,955 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 22:57:19,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 22:57:19,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 38 conjunts are in the unsatisfiable core [2021-10-28 22:57:19,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:57:20,152 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-28 22:57:20,260 INFO L354 Elim1Store]: treesize reduction 33, result has 43.1 percent of original size [2021-10-28 22:57:20,260 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 2 case distinctions, treesize of input 33 treesize of output 46 [2021-10-28 22:57:20,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-28 22:57:20,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:57:20,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:57:20,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:57:20,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:57:20,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:57:20,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:57:20,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:57:20,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:57:20,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:57:20,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:57:20,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:57:20,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:57:20,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 22:57:20,807 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 22:57:20,835 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-10-28 22:57:20,836 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 14 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 96 [2021-10-28 22:57:20,907 INFO L354 Elim1Store]: treesize reduction 112, result has 29.6 percent of original size [2021-10-28 22:57:20,907 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 78 treesize of output 101 [2021-10-28 22:57:21,284 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 125 treesize of output 105 [2021-10-28 22:57:21,986 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-28 22:57:21,986 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 104 treesize of output 71 [2021-10-28 22:57:22,429 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 34 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-28 22:57:22,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 22:57:25,624 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_~head~0.base_203 (_ BitVec 32)) (v_DerPreprocessor_31 (_ BitVec 32)) (v_DerPreprocessor_32 (_ BitVec 32)) (v_DerPreprocessor_30 (_ BitVec 32)) (v_DerPreprocessor_29 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| v_~head~0.base_203)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| v_~head~0.base_203 (_ bv1 1)) (select (select (store |c_#memory_$Pointer$.base| v_~head~0.base_203 (store (store (store (store (store (select |c_#memory_$Pointer$.base| v_~head~0.base_203) (_ bv0 32) v_DerPreprocessor_29) (_ bv1 32) v_DerPreprocessor_30) (_ bv2 32) v_DerPreprocessor_31) (_ bv3 32) v_DerPreprocessor_32) (_ bv4 32) c_~head~0.base)) c_~head~0.base) (bvadd (_ bv4 32) c_~head~0.offset))))))))) (_ bv1 1))))) is different from false [2021-10-28 22:57:27,719 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((v_~head~0.base_203 (_ BitVec 32)) (v_DerPreprocessor_31 (_ BitVec 32)) (v_DerPreprocessor_32 (_ BitVec 32)) (v_DerPreprocessor_30 (_ BitVec 32)) (v_DerPreprocessor_29 (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (bvneg (select |c_old(#valid)| v_~head~0.base_203)))) (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_old(#valid)| v_~head~0.base_203 (_ bv1 1)) (select (select (store |c_old(#memory_$Pointer$.base)| v_~head~0.base_203 (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| v_~head~0.base_203) (_ bv0 32) v_DerPreprocessor_29) (_ bv1 32) v_DerPreprocessor_30) (_ bv2 32) v_DerPreprocessor_31) (_ bv3 32) v_DerPreprocessor_32) (_ bv4 32) |c_old(~head~0.base)|)) |c_old(~head~0.base)|) (bvadd (_ bv4 32) |c_old(~head~0.offset)|)))))))))) (_ bv1 1)))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse0 (bvadd (_ bv4 32) c_~head~0.offset))) (select (select |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| c_~head~0.base) .cse0)) (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$.offset| c_~head~0.base) .cse0)))))))) (_ bv1 1)))) is different from true [2021-10-28 22:57:29,832 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((v_~head~0.base_203 (_ BitVec 32)) (v_DerPreprocessor_31 (_ BitVec 32)) (v_DerPreprocessor_32 (_ BitVec 32)) (v_DerPreprocessor_30 (_ BitVec 32)) (v_DerPreprocessor_29 (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (bvneg (select |c_old(#valid)| v_~head~0.base_203)))) (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_old(#valid)| v_~head~0.base_203 (_ bv1 1)) (select (select (store |c_old(#memory_$Pointer$.base)| v_~head~0.base_203 (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| v_~head~0.base_203) (_ bv0 32) v_DerPreprocessor_29) (_ bv1 32) v_DerPreprocessor_30) (_ bv2 32) v_DerPreprocessor_31) (_ bv3 32) v_DerPreprocessor_32) (_ bv4 32) |c_old(~head~0.base)|)) |c_old(~head~0.base)|) (bvadd (_ bv4 32) |c_old(~head~0.offset)|)))))))))) (_ bv1 1)))))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse0 (bvadd (_ bv4 32) c_insert_list_~l.offset))) (select (select |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| c_insert_list_~l.base) .cse0)) (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$.offset| c_insert_list_~l.base) .cse0))))))))))) is different from true [2021-10-28 22:57:31,928 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((v_~head~0.base_203 (_ BitVec 32)) (v_DerPreprocessor_31 (_ BitVec 32)) (v_DerPreprocessor_32 (_ BitVec 32)) (v_DerPreprocessor_30 (_ BitVec 32)) (v_DerPreprocessor_29 (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (bvneg (select |c_old(#valid)| v_~head~0.base_203)))) (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_old(#valid)| v_~head~0.base_203 (_ bv1 1)) (select (select (store |c_old(#memory_$Pointer$.base)| v_~head~0.base_203 (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| v_~head~0.base_203) (_ bv0 32) v_DerPreprocessor_29) (_ bv1 32) v_DerPreprocessor_30) (_ bv2 32) v_DerPreprocessor_31) (_ bv3 32) v_DerPreprocessor_32) (_ bv4 32) |c_old(~head~0.base)|)) |c_old(~head~0.base)|) (bvadd (_ bv4 32) |c_old(~head~0.offset)|)))))))))) (_ bv1 1)))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| c_insert_list_~l.base (store (select |c_#memory_$Pointer$.base| c_insert_list_~l.base) (bvadd (_ bv4 32) c_insert_list_~l.offset) c_~head~0.base)) c_~head~0.base) (bvadd (_ bv4 32) c_~head~0.offset))))))) (_ bv1 1)))) is different from true [2021-10-28 22:57:34,026 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((v_~head~0.base_203 (_ BitVec 32)) (v_DerPreprocessor_31 (_ BitVec 32)) (v_DerPreprocessor_32 (_ BitVec 32)) (v_DerPreprocessor_30 (_ BitVec 32)) (v_DerPreprocessor_29 (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (bvneg (select |c_old(#valid)| v_~head~0.base_203)))) (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_old(#valid)| v_~head~0.base_203 (_ bv1 1)) (select (select (store |c_old(#memory_$Pointer$.base)| v_~head~0.base_203 (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| v_~head~0.base_203) (_ bv0 32) v_DerPreprocessor_29) (_ bv1 32) v_DerPreprocessor_30) (_ bv2 32) v_DerPreprocessor_31) (_ bv3 32) v_DerPreprocessor_32) (_ bv4 32) |c_old(~head~0.base)|)) |c_old(~head~0.base)|) (bvadd (_ bv4 32) |c_old(~head~0.offset)|)))))))))) (_ bv1 1)))))) (forall ((v_DerPreprocessor_35 (_ BitVec 32)) (v_DerPreprocessor_36 (_ BitVec 32)) (v_DerPreprocessor_33 (_ BitVec 32)) (v_DerPreprocessor_34 (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| c_insert_list_~l.base (store (store (store (store (store (select |c_#memory_$Pointer$.base| c_insert_list_~l.base) c_insert_list_~l.offset v_DerPreprocessor_33) (bvadd (_ bv1 32) c_insert_list_~l.offset) v_DerPreprocessor_34) (bvadd (_ bv2 32) c_insert_list_~l.offset) v_DerPreprocessor_35) (bvadd (_ bv3 32) c_insert_list_~l.offset) v_DerPreprocessor_36) (bvadd (_ bv4 32) c_insert_list_~l.offset) c_~head~0.base)) c_~head~0.base) (bvadd (_ bv4 32) c_~head~0.offset))))))) (_ bv1 1))))) is different from true [2021-10-28 22:57:36,198 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((v_~head~0.base_203 (_ BitVec 32)) (v_DerPreprocessor_31 (_ BitVec 32)) (v_DerPreprocessor_32 (_ BitVec 32)) (v_DerPreprocessor_30 (_ BitVec 32)) (v_DerPreprocessor_29 (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (bvneg (select |c_old(#valid)| v_~head~0.base_203)))) (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_old(#valid)| v_~head~0.base_203 (_ bv1 1)) (select (select (store |c_old(#memory_$Pointer$.base)| v_~head~0.base_203 (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| v_~head~0.base_203) (_ bv0 32) v_DerPreprocessor_29) (_ bv1 32) v_DerPreprocessor_30) (_ bv2 32) v_DerPreprocessor_31) (_ bv3 32) v_DerPreprocessor_32) (_ bv4 32) |c_old(~head~0.base)|)) |c_old(~head~0.base)|) (bvadd (_ bv4 32) |c_old(~head~0.offset)|)))))))))) (_ bv1 1)))))) (forall ((v_insert_list_~l.base_130 (_ BitVec 32)) (v_DerPreprocessor_35 (_ BitVec 32)) (v_DerPreprocessor_36 (_ BitVec 32)) (v_DerPreprocessor_33 (_ BitVec 32)) (v_DerPreprocessor_34 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select |c_#valid| v_insert_list_~l.base_130))))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| v_insert_list_~l.base_130 (_ bv1 1)) (select (select (store |c_#memory_$Pointer$.base| v_insert_list_~l.base_130 (store (store (store (store (store (select |c_#memory_$Pointer$.base| v_insert_list_~l.base_130) (_ bv0 32) v_DerPreprocessor_33) (_ bv1 32) v_DerPreprocessor_34) (_ bv2 32) v_DerPreprocessor_35) (_ bv3 32) v_DerPreprocessor_36) (_ bv4 32) c_~head~0.base)) c_~head~0.base) (bvadd (_ bv4 32) c_~head~0.offset)))))))) (_ bv1 1)))))) is different from true [2021-10-28 22:57:52,010 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-28 22:57:52,010 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:57:52,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-28 22:57:52,010 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-10-28 22:57:52,010 INFO L627 BasicCegarLoop]: Counterexample might be feasible [2021-10-28 22:57:52,019 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-10-28 22:57:52,022 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location search_listErr0REQUIRES_VIOLATION [2021-10-28 22:57:52,022 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location search_listErr1REQUIRES_VIOLATION [2021-10-28 22:57:52,022 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location search_listErr2REQUIRES_VIOLATION [2021-10-28 22:57:52,023 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location search_listErr3REQUIRES_VIOLATION [2021-10-28 22:57:52,023 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 22:57:52,023 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-10-28 22:57:52,024 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-10-28 22:57:52,024 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-10-28 22:57:52,024 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-10-28 22:57:52,024 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-10-28 22:57:52,025 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6ENSURES_VIOLATIONMEMORY_LEAK [2021-10-28 22:57:52,025 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location delete_listErr0REQUIRES_VIOLATION [2021-10-28 22:57:52,025 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location delete_listErr1REQUIRES_VIOLATION [2021-10-28 22:57:52,025 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location delete_listErr2REQUIRES_VIOLATION [2021-10-28 22:57:52,026 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location delete_listErr3REQUIRES_VIOLATION [2021-10-28 22:57:52,026 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location delete_listErr4REQUIRES_VIOLATION [2021-10-28 22:57:52,026 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location delete_listErr5REQUIRES_VIOLATION [2021-10-28 22:57:52,026 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location delete_listErr6REQUIRES_VIOLATION [2021-10-28 22:57:52,027 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location delete_listErr7REQUIRES_VIOLATION [2021-10-28 22:57:52,027 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location delete_listErr8REQUIRES_VIOLATION [2021-10-28 22:57:52,027 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location delete_listErr9REQUIRES_VIOLATION [2021-10-28 22:57:52,027 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location delete_listErr10ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 22:57:52,028 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location delete_listErr11ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 22:57:52,028 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location delete_listErr12ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 22:57:52,028 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location insert_listErr0REQUIRES_VIOLATION [2021-10-28 22:57:52,028 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location insert_listErr1REQUIRES_VIOLATION [2021-10-28 22:57:52,029 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location insert_listErr2REQUIRES_VIOLATION [2021-10-28 22:57:52,029 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location insert_listErr3REQUIRES_VIOLATION [2021-10-28 22:57:52,029 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location insert_listErr4REQUIRES_VIOLATION [2021-10-28 22:57:52,029 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location insert_listErr5REQUIRES_VIOLATION [2021-10-28 22:57:52,030 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location insert_listErr6REQUIRES_VIOLATION [2021-10-28 22:57:52,030 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location insert_listErr7REQUIRES_VIOLATION [2021-10-28 22:57:52,052 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-28 22:57:52,250 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/cvc4 --incremental --print-success --lang smt (12)] Ended with exit code 0 [2021-10-28 22:57:52,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-28 22:57:52,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:57:52,651 INFO L731 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:57:52,655 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 22:57:52,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 10:57:52 BoogieIcfgContainer [2021-10-28 22:57:52,675 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 22:57:52,676 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 22:57:52,676 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 22:57:52,677 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 22:57:52,677 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:53:26" (3/4) ... [2021-10-28 22:57:52,683 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 22:57:52,683 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 22:57:52,684 INFO L168 Benchmark]: Toolchain (without parser) took 269099.12 ms. Allocated memory was 56.6 MB in the beginning and 125.8 MB in the end (delta: 69.2 MB). Free memory was 32.6 MB in the beginning and 81.5 MB in the end (delta: -48.8 MB). Peak memory consumption was 19.2 MB. Max. memory is 16.1 GB. [2021-10-28 22:57:52,685 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 56.6 MB. Free memory is still 37.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 22:57:52,685 INFO L168 Benchmark]: CACSL2BoogieTranslator took 962.08 ms. Allocated memory was 56.6 MB in the beginning and 77.6 MB in the end (delta: 21.0 MB). Free memory was 32.3 MB in the beginning and 57.9 MB in the end (delta: -25.6 MB). Peak memory consumption was 16.9 MB. Max. memory is 16.1 GB. [2021-10-28 22:57:52,686 INFO L168 Benchmark]: Boogie Preprocessor took 165.48 ms. Allocated memory is still 77.6 MB. Free memory was 57.9 MB in the beginning and 53.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 22:57:52,686 INFO L168 Benchmark]: RCFGBuilder took 1409.65 ms. Allocated memory is still 77.6 MB. Free memory was 53.7 MB in the beginning and 40.4 MB in the end (delta: 13.3 MB). Peak memory consumption was 20.9 MB. Max. memory is 16.1 GB. [2021-10-28 22:57:52,687 INFO L168 Benchmark]: TraceAbstraction took 266544.59 ms. Allocated memory was 77.6 MB in the beginning and 125.8 MB in the end (delta: 48.2 MB). Free memory was 40.0 MB in the beginning and 81.5 MB in the end (delta: -41.4 MB). Peak memory consumption was 65.3 MB. Max. memory is 16.1 GB. [2021-10-28 22:57:52,688 INFO L168 Benchmark]: Witness Printer took 6.74 ms. Allocated memory is still 125.8 MB. Free memory is still 81.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 22:57:52,691 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 56.6 MB. Free memory is still 37.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 962.08 ms. Allocated memory was 56.6 MB in the beginning and 77.6 MB in the end (delta: 21.0 MB). Free memory was 32.3 MB in the beginning and 57.9 MB in the end (delta: -25.6 MB). Peak memory consumption was 16.9 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 165.48 ms. Allocated memory is still 77.6 MB. Free memory was 57.9 MB in the beginning and 53.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1409.65 ms. Allocated memory is still 77.6 MB. Free memory was 53.7 MB in the beginning and 40.4 MB in the end (delta: 13.3 MB). Peak memory consumption was 20.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 266544.59 ms. Allocated memory was 77.6 MB in the beginning and 125.8 MB in the end (delta: 48.2 MB). Free memory was 40.0 MB in the beginning and 81.5 MB in the end (delta: -41.4 MB). Peak memory consumption was 65.3 MB. Max. memory is 16.1 GB. * Witness Printer took 6.74 ms. Allocated memory is still 125.8 MB. Free memory is still 81.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * 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: 813]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L769] mlist *head; [L804] int i; [L805] mlist *mylist = 0; [L806] mlist *temp; [L807] CALL insert_list(mylist,2) [L792] l = (mlist*)malloc(sizeof(mlist)) [L793] COND TRUE head==((void *)0) [L794] l->key = k [L795] l->next = ((void *)0) [L800] head = l [L801] return 0; [L807] RET insert_list(mylist,2) [L808] CALL insert_list(mylist,5) [L792] l = (mlist*)malloc(sizeof(mlist)) [L793] COND FALSE !(head==((void *)0)) [L797] l->key = k [L798] l->next = head [L800] head = l [L801] return 0; [L808] RET insert_list(mylist,5) [L809] CALL insert_list(mylist,1) [L792] l = (mlist*)malloc(sizeof(mlist)) [L793] COND FALSE !(head==((void *)0)) [L797] l->key = k [L798] l->next = head [L800] head = l [L801] return 0; [L809] RET insert_list(mylist,1) [L810] CALL insert_list(mylist,3) [L792] l = (mlist*)malloc(sizeof(mlist)) [L793] COND FALSE !(head==((void *)0)) [L797] l->key = k [L798] l->next = head [L800] head = l [L801] return 0; [L810] RET insert_list(mylist,3) [L811] mylist = head [L812] COND TRUE \read(*mylist) [L813] EXPR mylist->next [L813] mylist = mylist->next [L812] COND TRUE \read(*mylist) [L813] EXPR mylist->next [L813] mylist = mylist->next [L812] COND TRUE \read(*mylist) [L813] mylist->next - UnprovableResult [Line: 772]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 772]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 773]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 773]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 15]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 813]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 816]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 816]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 820]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 820]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 803]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 781]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 781]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 782]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 782]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 785]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 785]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 787]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 787]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 787]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 787]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 788]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 788]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 788]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 794]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 794]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 795]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 795]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 797]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 797]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 798]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 798]: 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 14 procedures, 130 locations, 33 error locations. Started 1 CEGAR loops. OverallTime: 266.4s, OverallIterations: 10, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 116.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 740 SDtfs, 1496 SDslu, 2095 SDs, 0 SdLazy, 3379 SolverSat, 341 SolverUnsat, 18 SolverUnknown, 0 SolverNotchecked, 57.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 757 GetRequests, 615 SyntacticMatches, 1 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 598 ImplicationChecksByTransitivity, 95.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=118occurred in iteration=7, InterpolantAutomatonStates: 110, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 235 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 83.7s InterpolantComputationTime, 395 NumberOfCodeBlocks, 395 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 721 ConstructedInterpolants, 53 QuantifiedInterpolants, 5276 SizeOfPredicates, 62 NumberOfNonLiveVariables, 2216 ConjunctsInSsa, 122 ConjunctsInUnsatCore, 19 InterpolantComputations, 10 PerfectInterpolantSequences, 484/569 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 22:57:52,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_858247f2-7ec6-47c9-860c-197488b6e060/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...