./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b6c6a722152c52daf4f5e799c877f12032a99023b4a9ea1a935c1ce634969e85 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 22:42:50,734 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:42:50,736 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:42:50,780 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:42:50,781 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:42:50,782 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:42:50,784 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:42:50,787 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:42:50,789 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:42:50,791 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:42:50,792 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:42:50,794 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:42:50,795 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:42:50,796 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:42:50,798 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:42:50,800 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:42:50,802 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:42:50,803 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:42:50,806 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:42:50,809 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:42:50,812 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:42:50,814 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:42:50,816 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:42:50,821 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:42:50,826 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:42:50,833 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:42:50,834 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:42:50,835 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:42:50,836 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:42:50,837 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:42:50,838 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:42:50,841 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:42:50,842 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:42:50,844 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:42:50,846 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:42:50,848 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:42:50,849 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:42:50,850 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:42:50,850 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:42:50,851 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:42:50,852 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:42:50,853 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-02 22:42:50,903 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:42:50,906 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:42:50,907 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:42:50,907 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:42:50,916 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:42:50,916 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:42:50,917 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:42:50,917 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:42:50,917 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 22:42:50,918 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-02 22:42:50,919 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:42:50,919 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 22:42:50,920 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:42:50,920 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-02 22:42:50,920 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-02 22:42:50,920 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-02 22:42:50,921 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 22:42:50,921 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-02 22:42:50,921 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 22:42:50,921 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:42:50,922 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:42:50,922 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:42:50,922 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 22:42:50,922 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:42:50,923 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:42:50,923 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 22:42:50,923 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 22:42:50,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 22:42:50,924 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:42:50,926 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_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b6c6a722152c52daf4f5e799c877f12032a99023b4a9ea1a935c1ce634969e85 [2021-11-02 22:42:51,323 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:42:51,356 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:42:51,359 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:42:51,361 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:42:51,362 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:42:51,363 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-1.i [2021-11-02 22:42:51,445 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/data/79feb65fa/3e9ab36d7dff4d60b0469c5285a5fbfe/FLAG8fd3279a4 [2021-11-02 22:42:52,204 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:42:52,205 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-1.i [2021-11-02 22:42:52,236 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/data/79feb65fa/3e9ab36d7dff4d60b0469c5285a5fbfe/FLAG8fd3279a4 [2021-11-02 22:42:52,393 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/data/79feb65fa/3e9ab36d7dff4d60b0469c5285a5fbfe [2021-11-02 22:42:52,397 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:42:52,399 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-02 22:42:52,403 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:42:52,403 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:42:52,408 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:42:52,409 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:42:52" (1/1) ... [2021-11-02 22:42:52,411 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62b6cfb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:42:52, skipping insertion in model container [2021-11-02 22:42:52,411 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:42:52" (1/1) ... [2021-11-02 22:42:52,420 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:42:52,514 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:42:53,007 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_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-1.i[33021,33034] [2021-11-02 22:42:53,225 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_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-1.i[45234,45247] [2021-11-02 22:42:53,233 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:42:53,246 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) [2021-11-02 22:42:53,246 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@f523abc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:42:53, skipping insertion in model container [2021-11-02 22:42:53,247 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:42:53,247 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-11-02 22:42:53,250 INFO L168 Benchmark]: Toolchain (without parser) took 849.94 ms. Allocated memory is still 104.9 MB. Free memory was 62.1 MB in the beginning and 69.1 MB in the end (delta: -7.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-02 22:42:53,251 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 104.9 MB. Free memory is still 80.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 22:42:53,252 INFO L168 Benchmark]: CACSL2BoogieTranslator took 844.37 ms. Allocated memory is still 104.9 MB. Free memory was 61.9 MB in the beginning and 69.1 MB in the end (delta: -7.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-02 22:42:53,255 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 104.9 MB. Free memory is still 80.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 844.37 ms. Allocated memory is still 104.9 MB. Free memory was 61.9 MB in the beginning and 69.1 MB in the end (delta: -7.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 766]: 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... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b6c6a722152c52daf4f5e799c877f12032a99023b4a9ea1a935c1ce634969e85 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 22:42:56,117 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:42:56,120 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:42:56,169 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:42:56,170 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:42:56,172 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:42:56,174 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:42:56,183 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:42:56,191 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:42:56,193 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:42:56,195 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:42:56,199 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:42:56,200 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:42:56,209 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:42:56,211 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:42:56,212 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:42:56,214 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:42:56,215 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:42:56,218 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:42:56,227 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:42:56,235 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:42:56,238 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:42:56,240 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:42:56,242 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:42:56,247 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:42:56,249 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:42:56,250 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:42:56,252 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:42:56,253 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:42:56,255 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:42:56,256 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:42:56,257 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:42:56,260 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:42:56,261 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:42:56,263 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:42:56,263 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:42:56,265 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:42:56,265 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:42:56,265 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:42:56,268 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:42:56,269 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:42:56,270 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-02 22:42:56,326 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:42:56,327 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:42:56,328 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:42:56,328 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:42:56,331 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:42:56,331 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:42:56,331 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:42:56,332 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:42:56,332 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 22:42:56,332 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-02 22:42:56,334 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:42:56,334 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 22:42:56,334 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:42:56,335 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-02 22:42:56,335 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-02 22:42:56,335 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-02 22:42:56,335 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 22:42:56,336 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-02 22:42:56,336 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-02 22:42:56,336 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-02 22:42:56,336 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 22:42:56,337 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:42:56,337 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:42:56,337 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:42:56,338 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 22:42:56,338 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:42:56,338 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:42:56,339 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 22:42:56,339 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-02 22:42:56,339 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-02 22:42:56,339 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:42:56,340 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-02 22:42:56,340 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_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b6c6a722152c52daf4f5e799c877f12032a99023b4a9ea1a935c1ce634969e85 [2021-11-02 22:42:56,894 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:42:56,946 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:42:56,950 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:42:56,952 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:42:56,953 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:42:56,954 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-1.i [2021-11-02 22:42:57,046 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/data/e7710b751/51b77608b17048d0859ea171191e562d/FLAG34dfc6e1d [2021-11-02 22:42:57,906 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:42:57,906 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-1.i [2021-11-02 22:42:57,943 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/data/e7710b751/51b77608b17048d0859ea171191e562d/FLAG34dfc6e1d [2021-11-02 22:42:58,058 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/data/e7710b751/51b77608b17048d0859ea171191e562d [2021-11-02 22:42:58,061 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:42:58,063 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-02 22:42:58,065 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:42:58,065 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:42:58,070 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:42:58,071 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:42:58" (1/1) ... [2021-11-02 22:42:58,073 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b45a5ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:42:58, skipping insertion in model container [2021-11-02 22:42:58,073 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:42:58" (1/1) ... [2021-11-02 22:42:58,082 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:42:58,166 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:42:58,764 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_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-1.i[33021,33034] [2021-11-02 22:42:58,894 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_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-1.i[45234,45247] [2021-11-02 22:42:58,904 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:42:58,919 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-02 22:42:58,942 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:42:58,966 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_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-1.i[33021,33034] [2021-11-02 22:42:59,118 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_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-1.i[45234,45247] [2021-11-02 22:42:59,122 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:42:59,128 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 22:42:59,194 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_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-1.i[33021,33034] [2021-11-02 22:42:59,261 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_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-1.i[45234,45247] [2021-11-02 22:42:59,265 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:42:59,323 INFO L208 MainTranslator]: Completed translation [2021-11-02 22:42:59,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:42:59 WrapperNode [2021-11-02 22:42:59,324 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:42:59,326 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 22:42:59,326 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 22:42:59,326 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 22:42:59,341 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:42:59" (1/1) ... [2021-11-02 22:42:59,341 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:42:59" (1/1) ... [2021-11-02 22:42:59,386 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:42:59" (1/1) ... [2021-11-02 22:42:59,400 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:42:59" (1/1) ... [2021-11-02 22:42:59,529 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:42:59" (1/1) ... [2021-11-02 22:42:59,546 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:42:59" (1/1) ... [2021-11-02 22:42:59,557 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:42:59" (1/1) ... [2021-11-02 22:42:59,621 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 22:42:59,624 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 22:42:59,625 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 22:42:59,625 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 22:42:59,627 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:42:59" (1/1) ... [2021-11-02 22:42:59,637 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:42:59,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:42:59,674 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 22:42:59,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 22:42:59,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-02 22:42:59,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 22:42:59,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-11-02 22:42:59,740 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-02 22:42:59,741 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-02 22:42:59,741 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-02 22:42:59,741 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-02 22:42:59,741 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-02 22:42:59,741 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-02 22:42:59,742 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-02 22:42:59,742 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int [2021-11-02 22:42:59,742 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-02 22:42:59,742 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-02 22:42:59,743 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-11-02 22:42:59,743 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-11-02 22:42:59,743 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-11-02 22:42:59,743 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-11-02 22:42:59,743 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-02 22:42:59,744 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-11-02 22:42:59,744 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-11-02 22:42:59,744 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-02 22:42:59,744 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-11-02 22:42:59,744 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-11-02 22:42:59,745 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-11-02 22:42:59,745 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-02 22:42:59,745 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-11-02 22:42:59,745 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-11-02 22:42:59,745 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-11-02 22:42:59,746 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-11-02 22:42:59,746 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-11-02 22:42:59,746 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-11-02 22:42:59,746 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-11-02 22:42:59,746 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-02 22:42:59,748 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-11-02 22:42:59,748 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-11-02 22:42:59,748 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-11-02 22:42:59,749 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-11-02 22:42:59,749 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-11-02 22:42:59,750 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-11-02 22:42:59,750 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-11-02 22:42:59,750 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-11-02 22:42:59,750 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-11-02 22:42:59,750 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-11-02 22:42:59,751 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-11-02 22:42:59,751 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-11-02 22:42:59,752 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-11-02 22:42:59,752 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-11-02 22:42:59,752 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-11-02 22:42:59,752 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-11-02 22:42:59,752 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-11-02 22:42:59,753 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-11-02 22:42:59,753 INFO L130 BoogieDeclarations]: Found specification of procedure ffsl [2021-11-02 22:42:59,753 INFO L130 BoogieDeclarations]: Found specification of procedure ffsll [2021-11-02 22:42:59,754 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-11-02 22:42:59,754 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-11-02 22:42:59,755 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp_l [2021-11-02 22:42:59,756 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp_l [2021-11-02 22:42:59,756 INFO L130 BoogieDeclarations]: Found specification of procedure explicit_bzero [2021-11-02 22:42:59,758 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-11-02 22:42:59,758 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-11-02 22:42:59,758 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-11-02 22:42:59,758 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-11-02 22:42:59,758 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-11-02 22:42:59,759 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-11-02 22:42:59,759 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-02 22:42:59,760 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-02 22:42:59,760 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-02 22:42:59,760 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-02 22:42:59,760 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-02 22:42:59,760 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-02 22:42:59,761 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-02 22:42:59,762 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-02 22:42:59,762 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-02 22:42:59,762 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-02 22:42:59,762 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-02 22:42:59,763 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-02 22:42:59,763 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-02 22:42:59,763 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-02 22:42:59,763 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-02 22:42:59,763 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-02 22:42:59,764 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-02 22:42:59,764 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-02 22:42:59,764 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-02 22:42:59,764 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-02 22:42:59,764 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-02 22:42:59,765 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-02 22:42:59,765 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-02 22:42:59,765 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-02 22:42:59,765 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-02 22:42:59,765 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-02 22:42:59,766 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-02 22:42:59,766 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-02 22:42:59,766 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-02 22:42:59,767 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-02 22:42:59,767 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-02 22:42:59,767 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-02 22:42:59,768 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-02 22:42:59,768 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-02 22:42:59,768 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-02 22:42:59,768 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-02 22:42:59,768 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-02 22:42:59,769 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-02 22:42:59,769 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-02 22:42:59,769 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-02 22:42:59,769 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-02 22:42:59,769 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-02 22:42:59,770 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-02 22:42:59,770 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-02 22:42:59,770 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-02 22:42:59,770 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-02 22:42:59,770 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-02 22:42:59,771 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-02 22:42:59,771 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-02 22:42:59,771 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-02 22:42:59,772 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-02 22:42:59,772 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-02 22:42:59,773 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-02 22:42:59,773 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-02 22:42:59,776 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-02 22:42:59,778 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-02 22:42:59,778 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-02 22:42:59,778 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-02 22:42:59,779 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-02 22:42:59,780 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-02 22:42:59,781 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-02 22:42:59,781 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-02 22:42:59,781 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-02 22:42:59,787 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-02 22:42:59,788 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-02 22:42:59,788 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-02 22:42:59,788 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-02 22:42:59,788 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-02 22:42:59,788 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-02 22:42:59,789 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-02 22:42:59,789 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-02 22:42:59,789 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-02 22:42:59,789 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-02 22:42:59,789 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-02 22:42:59,790 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-02 22:42:59,790 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-02 22:42:59,790 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-02 22:42:59,790 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-02 22:42:59,790 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-02 22:42:59,790 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-02 22:42:59,791 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-02 22:42:59,791 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-02 22:42:59,791 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-02 22:42:59,791 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-02 22:42:59,791 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-02 22:42:59,792 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-02 22:42:59,792 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-02 22:42:59,792 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-02 22:42:59,792 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-02 22:42:59,792 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-02 22:42:59,792 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-02 22:42:59,793 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-02 22:42:59,793 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-02 22:42:59,793 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-02 22:42:59,793 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-02 22:42:59,793 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-02 22:42:59,794 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-02 22:42:59,794 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-02 22:42:59,794 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-02 22:42:59,794 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-02 22:42:59,794 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-02 22:42:59,794 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-02 22:42:59,795 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-02 22:42:59,795 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-02 22:42:59,795 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-02 22:42:59,795 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-02 22:42:59,795 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-02 22:42:59,796 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-02 22:42:59,796 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-02 22:42:59,796 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-02 22:42:59,796 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-02 22:42:59,796 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 22:42:59,797 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-02 22:42:59,797 INFO L130 BoogieDeclarations]: Found specification of procedure test_int [2021-11-02 22:42:59,797 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-02 22:42:59,797 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 22:42:59,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-02 22:42:59,797 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-02 22:42:59,798 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-02 22:42:59,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 22:42:59,798 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 22:42:59,798 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-02 22:42:59,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 22:42:59,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-02 22:42:59,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-02 22:42:59,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 22:42:59,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-11-02 22:42:59,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-02 22:43:00,490 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-02 22:43:06,401 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 22:43:06,401 INFO L299 CfgBuilder]: Removed 62 assume(true) statements. [2021-11-02 22:43:06,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:43:06 BoogieIcfgContainer [2021-11-02 22:43:06,406 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 22:43:06,408 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 22:43:06,409 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 22:43:06,413 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 22:43:06,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 10:42:58" (1/3) ... [2021-11-02 22:43:06,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d741ef3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:43:06, skipping insertion in model container [2021-11-02 22:43:06,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:42:59" (2/3) ... [2021-11-02 22:43:06,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d741ef3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:43:06, skipping insertion in model container [2021-11-02 22:43:06,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:43:06" (3/3) ... [2021-11-02 22:43:06,417 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test8-1.i [2021-11-02 22:43:06,424 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 22:43:06,424 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 536 error locations. [2021-11-02 22:43:06,486 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 22:43:06,494 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 [2021-11-02 22:43:06,494 INFO L340 AbstractCegarLoop]: Starting to check reachability of 536 error locations. [2021-11-02 22:43:06,540 INFO L276 IsEmpty]: Start isEmpty. Operand has 1102 states, 541 states have (on average 2.2384473197781887) internal successors, (1211), 1089 states have internal predecessors, (1211), 22 states have call successors, (22), 5 states have call predecessors, (22), 5 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-02 22:43:06,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-02 22:43:06,549 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:43:06,550 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:43:06,550 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-02 22:43:06,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:43:06,557 INFO L85 PathProgramCache]: Analyzing trace with hash -292335135, now seen corresponding path program 1 times [2021-11-02 22:43:06,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:43:06,572 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1769136175] [2021-11-02 22:43:06,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:43:06,574 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:43:06,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:43:06,578 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:43:06,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-02 22:43:06,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:43:06,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-02 22:43:06,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:43:07,009 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 [2021-11-02 22:43:07,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:43:07,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:43:07,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:43:07,121 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:43:07,122 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1769136175] [2021-11-02 22:43:07,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1769136175] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:43:07,123 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:43:07,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-02 22:43:07,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738919043] [2021-11-02 22:43:07,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:43:07,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:43:07,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:43:07,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:43:07,190 INFO L87 Difference]: Start difference. First operand has 1102 states, 541 states have (on average 2.2384473197781887) internal successors, (1211), 1089 states have internal predecessors, (1211), 22 states have call successors, (22), 5 states have call predecessors, (22), 5 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:43:09,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:43:09,716 INFO L93 Difference]: Finished difference Result 1105 states and 1191 transitions. [2021-11-02 22:43:09,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:43:09,722 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-11-02 22:43:09,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:43:09,754 INFO L225 Difference]: With dead ends: 1105 [2021-11-02 22:43:09,754 INFO L226 Difference]: Without dead ends: 1102 [2021-11-02 22:43:09,756 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:43:09,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1102 states. [2021-11-02 22:43:09,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1102 to 1090. [2021-11-02 22:43:09,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1090 states, 544 states have (on average 2.088235294117647) internal successors, (1136), 1077 states have internal predecessors, (1136), 23 states have call successors, (23), 5 states have call predecessors, (23), 4 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-02 22:43:09,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1090 states to 1090 states and 1181 transitions. [2021-11-02 22:43:09,896 INFO L78 Accepts]: Start accepts. Automaton has 1090 states and 1181 transitions. Word has length 7 [2021-11-02 22:43:09,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:43:09,897 INFO L470 AbstractCegarLoop]: Abstraction has 1090 states and 1181 transitions. [2021-11-02 22:43:09,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:43:09,897 INFO L276 IsEmpty]: Start isEmpty. Operand 1090 states and 1181 transitions. [2021-11-02 22:43:09,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-02 22:43:09,898 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:43:09,898 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:43:09,920 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-02 22:43:10,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:43:10,117 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-02 22:43:10,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:43:10,117 INFO L85 PathProgramCache]: Analyzing trace with hash -292335134, now seen corresponding path program 1 times [2021-11-02 22:43:10,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:43:10,118 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1972296566] [2021-11-02 22:43:10,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:43:10,119 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:43:10,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:43:10,120 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:43:10,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-02 22:43:10,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:43:10,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:43:10,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:43:10,430 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 [2021-11-02 22:43:10,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:43:10,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:43:10,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:43:10,551 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:43:10,551 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1972296566] [2021-11-02 22:43:10,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1972296566] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:43:10,552 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:43:10,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-02 22:43:10,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339228037] [2021-11-02 22:43:10,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:43:10,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:43:10,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:43:10,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:43:10,556 INFO L87 Difference]: Start difference. First operand 1090 states and 1181 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:43:16,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:43:16,833 INFO L93 Difference]: Finished difference Result 1566 states and 1691 transitions. [2021-11-02 22:43:16,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:43:16,834 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-11-02 22:43:16,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:43:16,844 INFO L225 Difference]: With dead ends: 1566 [2021-11-02 22:43:16,844 INFO L226 Difference]: Without dead ends: 1566 [2021-11-02 22:43:16,845 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:43:16,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1566 states. [2021-11-02 22:43:16,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1566 to 1129. [2021-11-02 22:43:16,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1129 states, 591 states have (on average 2.0676818950930627) internal successors, (1222), 1115 states have internal predecessors, (1222), 24 states have call successors, (24), 5 states have call predecessors, (24), 4 states have return successors, (23), 9 states have call predecessors, (23), 23 states have call successors, (23) [2021-11-02 22:43:16,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1129 states to 1129 states and 1269 transitions. [2021-11-02 22:43:16,918 INFO L78 Accepts]: Start accepts. Automaton has 1129 states and 1269 transitions. Word has length 7 [2021-11-02 22:43:16,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:43:16,921 INFO L470 AbstractCegarLoop]: Abstraction has 1129 states and 1269 transitions. [2021-11-02 22:43:16,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:43:16,922 INFO L276 IsEmpty]: Start isEmpty. Operand 1129 states and 1269 transitions. [2021-11-02 22:43:16,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-02 22:43:16,924 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:43:16,924 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:43:16,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-02 22:43:17,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:43:17,138 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr7REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-02 22:43:17,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:43:17,139 INFO L85 PathProgramCache]: Analyzing trace with hash -184131353, now seen corresponding path program 1 times [2021-11-02 22:43:17,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:43:17,141 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1246113351] [2021-11-02 22:43:17,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:43:17,141 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:43:17,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:43:17,148 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:43:17,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-02 22:43:17,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:43:17,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:43:17,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:43:17,467 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 [2021-11-02 22:43:17,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:43:17,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:43:17,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:43:17,649 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:43:17,649 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1246113351] [2021-11-02 22:43:17,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1246113351] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:43:17,649 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:43:17,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-02 22:43:17,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043281635] [2021-11-02 22:43:17,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:43:17,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:43:17,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:43:17,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:43:17,651 INFO L87 Difference]: Start difference. First operand 1129 states and 1269 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:43:24,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:43:24,436 INFO L93 Difference]: Finished difference Result 1565 states and 1690 transitions. [2021-11-02 22:43:24,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:43:24,439 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-11-02 22:43:24,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:43:24,452 INFO L225 Difference]: With dead ends: 1565 [2021-11-02 22:43:24,452 INFO L226 Difference]: Without dead ends: 1565 [2021-11-02 22:43:24,456 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:43:24,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1565 states. [2021-11-02 22:43:24,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1565 to 1327. [2021-11-02 22:43:24,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1327 states, 798 states have (on average 2.0426065162907268) internal successors, (1630), 1312 states have internal predecessors, (1630), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 10 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-02 22:43:24,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1327 states to 1327 states and 1679 transitions. [2021-11-02 22:43:24,526 INFO L78 Accepts]: Start accepts. Automaton has 1327 states and 1679 transitions. Word has length 12 [2021-11-02 22:43:24,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:43:24,527 INFO L470 AbstractCegarLoop]: Abstraction has 1327 states and 1679 transitions. [2021-11-02 22:43:24,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:43:24,528 INFO L276 IsEmpty]: Start isEmpty. Operand 1327 states and 1679 transitions. [2021-11-02 22:43:24,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-02 22:43:24,528 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:43:24,529 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:43:24,543 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-02 22:43:24,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:43:24,744 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr6REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-02 22:43:24,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:43:24,745 INFO L85 PathProgramCache]: Analyzing trace with hash -184131354, now seen corresponding path program 1 times [2021-11-02 22:43:24,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:43:24,746 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1986353046] [2021-11-02 22:43:24,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:43:24,746 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:43:24,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:43:24,747 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:43:24,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-02 22:43:24,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:43:24,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-02 22:43:24,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:43:24,998 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 [2021-11-02 22:43:25,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:43:25,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:43:25,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:43:25,077 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:43:25,080 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1986353046] [2021-11-02 22:43:25,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1986353046] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:43:25,081 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:43:25,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-02 22:43:25,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188754713] [2021-11-02 22:43:25,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:43:25,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:43:25,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:43:25,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:43:25,085 INFO L87 Difference]: Start difference. First operand 1327 states and 1679 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:43:27,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:43:27,970 INFO L93 Difference]: Finished difference Result 1656 states and 2033 transitions. [2021-11-02 22:43:27,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:43:27,971 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-11-02 22:43:27,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:43:27,982 INFO L225 Difference]: With dead ends: 1656 [2021-11-02 22:43:27,982 INFO L226 Difference]: Without dead ends: 1656 [2021-11-02 22:43:27,983 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:43:27,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1656 states. [2021-11-02 22:43:28,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1656 to 1280. [2021-11-02 22:43:28,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1280 states, 798 states have (on average 1.9774436090225564) internal successors, (1578), 1265 states have internal predecessors, (1578), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 10 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-02 22:43:28,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1280 states to 1280 states and 1627 transitions. [2021-11-02 22:43:28,035 INFO L78 Accepts]: Start accepts. Automaton has 1280 states and 1627 transitions. Word has length 12 [2021-11-02 22:43:28,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:43:28,035 INFO L470 AbstractCegarLoop]: Abstraction has 1280 states and 1627 transitions. [2021-11-02 22:43:28,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:43:28,036 INFO L276 IsEmpty]: Start isEmpty. Operand 1280 states and 1627 transitions. [2021-11-02 22:43:28,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-02 22:43:28,037 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:43:28,037 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:43:28,056 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-02 22:43:28,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:43:28,252 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr534ENSURES_VIOLATIONMEMORY_LEAK === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-02 22:43:28,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:43:28,252 INFO L85 PathProgramCache]: Analyzing trace with hash -42398436, now seen corresponding path program 1 times [2021-11-02 22:43:28,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:43:28,253 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1864338216] [2021-11-02 22:43:28,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:43:28,253 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:43:28,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:43:28,255 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:43:28,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-02 22:43:28,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:43:28,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:43:28,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:43:28,655 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:43:28,656 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:43:28,657 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:43:28,742 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-02 22:43:28,743 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 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-02 22:43:28,840 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-02 22:43:28,841 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-11-02 22:43:28,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:43:28,878 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:43:28,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:43:28,985 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:43:28,985 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1864338216] [2021-11-02 22:43:28,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1864338216] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:43:28,986 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:43:28,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-02 22:43:28,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712186481] [2021-11-02 22:43:28,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:43:28,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:43:28,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:43:28,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:43:28,988 INFO L87 Difference]: Start difference. First operand 1280 states and 1627 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:43:31,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:43:31,632 INFO L93 Difference]: Finished difference Result 1790 states and 2346 transitions. [2021-11-02 22:43:31,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:43:31,633 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-11-02 22:43:31,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:43:31,645 INFO L225 Difference]: With dead ends: 1790 [2021-11-02 22:43:31,645 INFO L226 Difference]: Without dead ends: 1790 [2021-11-02 22:43:31,645 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-02 22:43:31,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1790 states. [2021-11-02 22:43:31,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1790 to 1280. [2021-11-02 22:43:31,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1280 states, 798 states have (on average 1.9761904761904763) internal successors, (1577), 1265 states have internal predecessors, (1577), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 10 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-02 22:43:31,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1280 states to 1280 states and 1626 transitions. [2021-11-02 22:43:31,693 INFO L78 Accepts]: Start accepts. Automaton has 1280 states and 1626 transitions. Word has length 14 [2021-11-02 22:43:31,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:43:31,693 INFO L470 AbstractCegarLoop]: Abstraction has 1280 states and 1626 transitions. [2021-11-02 22:43:31,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:43:31,694 INFO L276 IsEmpty]: Start isEmpty. Operand 1280 states and 1626 transitions. [2021-11-02 22:43:31,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-02 22:43:31,695 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:43:31,695 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:43:31,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-02 22:43:31,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:43:31,911 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr14REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-02 22:43:31,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:43:31,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1725470958, now seen corresponding path program 1 times [2021-11-02 22:43:31,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:43:31,913 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [493491060] [2021-11-02 22:43:31,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:43:31,913 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:43:31,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:43:31,914 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:43:31,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-02 22:43:32,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:43:32,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-02 22:43:32,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:43:32,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:43:32,326 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:43:32,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:43:32,413 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:43:32,413 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [493491060] [2021-11-02 22:43:32,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [493491060] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:43:32,414 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:43:32,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-02 22:43:32,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582251262] [2021-11-02 22:43:32,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:43:32,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:43:32,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:43:32,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:43:32,417 INFO L87 Difference]: Start difference. First operand 1280 states and 1626 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:43:32,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:43:32,478 INFO L93 Difference]: Finished difference Result 1247 states and 1592 transitions. [2021-11-02 22:43:32,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:43:32,479 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2021-11-02 22:43:32,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:43:32,486 INFO L225 Difference]: With dead ends: 1247 [2021-11-02 22:43:32,487 INFO L226 Difference]: Without dead ends: 1247 [2021-11-02 22:43:32,488 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:43:32,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1247 states. [2021-11-02 22:43:32,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1247 to 1238. [2021-11-02 22:43:32,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1238 states, 780 states have (on average 1.9666666666666666) internal successors, (1534), 1223 states have internal predecessors, (1534), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 10 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-02 22:43:32,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 1583 transitions. [2021-11-02 22:43:32,531 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 1583 transitions. Word has length 22 [2021-11-02 22:43:32,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:43:32,531 INFO L470 AbstractCegarLoop]: Abstraction has 1238 states and 1583 transitions. [2021-11-02 22:43:32,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:43:32,532 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 1583 transitions. [2021-11-02 22:43:32,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-02 22:43:32,533 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:43:32,533 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:43:32,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-02 22:43:32,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:43:32,749 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr38REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-02 22:43:32,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:43:32,749 INFO L85 PathProgramCache]: Analyzing trace with hash -320213556, now seen corresponding path program 1 times [2021-11-02 22:43:32,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:43:32,750 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1714946853] [2021-11-02 22:43:32,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:43:32,750 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:43:32,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:43:32,751 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:43:32,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-02 22:43:33,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:43:33,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:43:33,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:43:33,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:43:33,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:43:33,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:43:33,231 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:43:33,231 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1714946853] [2021-11-02 22:43:33,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1714946853] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:43:33,232 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:43:33,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-02 22:43:33,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103190930] [2021-11-02 22:43:33,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:43:33,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:43:33,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:43:33,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:43:33,234 INFO L87 Difference]: Start difference. First operand 1238 states and 1583 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:43:33,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:43:33,368 INFO L93 Difference]: Finished difference Result 1226 states and 1564 transitions. [2021-11-02 22:43:33,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:43:33,369 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2021-11-02 22:43:33,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:43:33,378 INFO L225 Difference]: With dead ends: 1226 [2021-11-02 22:43:33,378 INFO L226 Difference]: Without dead ends: 1226 [2021-11-02 22:43:33,381 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:43:33,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1226 states. [2021-11-02 22:43:33,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1226 to 1216. [2021-11-02 22:43:33,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1216 states, 772 states have (on average 1.9494818652849741) internal successors, (1505), 1201 states have internal predecessors, (1505), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 10 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-02 22:43:33,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1216 states to 1216 states and 1554 transitions. [2021-11-02 22:43:33,423 INFO L78 Accepts]: Start accepts. Automaton has 1216 states and 1554 transitions. Word has length 24 [2021-11-02 22:43:33,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:43:33,424 INFO L470 AbstractCegarLoop]: Abstraction has 1216 states and 1554 transitions. [2021-11-02 22:43:33,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:43:33,424 INFO L276 IsEmpty]: Start isEmpty. Operand 1216 states and 1554 transitions. [2021-11-02 22:43:33,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-02 22:43:33,426 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:43:33,427 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:43:33,445 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-02 22:43:33,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:43:33,643 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr52REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-02 22:43:33,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:43:33,643 INFO L85 PathProgramCache]: Analyzing trace with hash 44817114, now seen corresponding path program 1 times [2021-11-02 22:43:33,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:43:33,644 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1830294835] [2021-11-02 22:43:33,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:43:33,645 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:43:33,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:43:33,647 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:43:33,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-02 22:43:34,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:43:34,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:43:34,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:43:34,058 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 [2021-11-02 22:43:34,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:43:34,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:43:34,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:43:34,433 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:43:34,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1830294835] [2021-11-02 22:43:34,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1830294835] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:43:34,434 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:43:34,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-02 22:43:34,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161646714] [2021-11-02 22:43:34,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:43:34,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:43:34,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:43:34,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:43:34,437 INFO L87 Difference]: Start difference. First operand 1216 states and 1554 transitions. Second operand has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:43:36,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:43:36,938 INFO L93 Difference]: Finished difference Result 1806 states and 2377 transitions. [2021-11-02 22:43:36,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:43:36,941 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2021-11-02 22:43:36,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:43:36,948 INFO L225 Difference]: With dead ends: 1806 [2021-11-02 22:43:36,948 INFO L226 Difference]: Without dead ends: 1806 [2021-11-02 22:43:36,949 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:43:36,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1806 states. [2021-11-02 22:43:36,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1806 to 1212. [2021-11-02 22:43:36,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1212 states, 772 states have (on average 1.944300518134715) internal successors, (1501), 1197 states have internal predecessors, (1501), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 10 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-02 22:43:36,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1212 states to 1212 states and 1550 transitions. [2021-11-02 22:43:36,983 INFO L78 Accepts]: Start accepts. Automaton has 1212 states and 1550 transitions. Word has length 38 [2021-11-02 22:43:36,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:43:36,984 INFO L470 AbstractCegarLoop]: Abstraction has 1212 states and 1550 transitions. [2021-11-02 22:43:36,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:43:36,984 INFO L276 IsEmpty]: Start isEmpty. Operand 1212 states and 1550 transitions. [2021-11-02 22:43:36,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-02 22:43:36,986 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:43:36,986 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:43:37,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-02 22:43:37,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:43:37,201 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr53REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-02 22:43:37,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:43:37,201 INFO L85 PathProgramCache]: Analyzing trace with hash 44817115, now seen corresponding path program 1 times [2021-11-02 22:43:37,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:43:37,202 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [48440062] [2021-11-02 22:43:37,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:43:37,202 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:43:37,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:43:37,203 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:43:37,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-02 22:43:37,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:43:37,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-02 22:43:37,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:43:37,517 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 [2021-11-02 22:43:37,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:43:37,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:43:38,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:43:38,479 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:43:38,479 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [48440062] [2021-11-02 22:43:38,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [48440062] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:43:38,479 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:43:38,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-02 22:43:38,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519542501] [2021-11-02 22:43:38,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:43:38,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:43:38,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:43:38,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:43:38,484 INFO L87 Difference]: Start difference. First operand 1212 states and 1550 transitions. Second operand has 6 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:43:45,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:43:45,950 INFO L93 Difference]: Finished difference Result 1453 states and 1568 transitions. [2021-11-02 22:43:45,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:43:45,952 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2021-11-02 22:43:45,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:43:45,960 INFO L225 Difference]: With dead ends: 1453 [2021-11-02 22:43:45,960 INFO L226 Difference]: Without dead ends: 1453 [2021-11-02 22:43:45,960 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-02 22:43:45,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2021-11-02 22:43:45,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 1208. [2021-11-02 22:43:45,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1208 states, 772 states have (on average 1.939119170984456) internal successors, (1497), 1193 states have internal predecessors, (1497), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 10 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-02 22:43:45,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1208 states to 1208 states and 1546 transitions. [2021-11-02 22:43:45,990 INFO L78 Accepts]: Start accepts. Automaton has 1208 states and 1546 transitions. Word has length 38 [2021-11-02 22:43:45,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:43:45,990 INFO L470 AbstractCegarLoop]: Abstraction has 1208 states and 1546 transitions. [2021-11-02 22:43:45,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:43:45,991 INFO L276 IsEmpty]: Start isEmpty. Operand 1208 states and 1546 transitions. [2021-11-02 22:43:45,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-02 22:43:45,992 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:43:45,992 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:43:46,005 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-02 22:43:46,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:43:46,205 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr117REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-02 22:43:46,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:43:46,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1384262345, now seen corresponding path program 1 times [2021-11-02 22:43:46,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:43:46,206 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1600587962] [2021-11-02 22:43:46,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:43:46,207 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:43:46,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:43:46,208 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:43:46,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-02 22:43:46,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:43:46,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:43:46,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:43:46,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:43:46,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:43:46,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:43:46,899 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:43:46,899 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1600587962] [2021-11-02 22:43:46,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1600587962] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:43:46,899 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:43:46,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-02 22:43:46,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934904078] [2021-11-02 22:43:46,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:43:46,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:43:46,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:43:46,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:43:46,901 INFO L87 Difference]: Start difference. First operand 1208 states and 1546 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:43:46,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:43:46,970 INFO L93 Difference]: Finished difference Result 1211 states and 1545 transitions. [2021-11-02 22:43:46,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:43:46,971 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 53 [2021-11-02 22:43:46,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:43:46,979 INFO L225 Difference]: With dead ends: 1211 [2021-11-02 22:43:46,979 INFO L226 Difference]: Without dead ends: 1211 [2021-11-02 22:43:46,980 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:43:46,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1211 states. [2021-11-02 22:43:47,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1211 to 1202. [2021-11-02 22:43:47,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1202 states, 766 states have (on average 1.941253263707572) internal successors, (1487), 1187 states have internal predecessors, (1487), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 10 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-02 22:43:47,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1202 states to 1202 states and 1536 transitions. [2021-11-02 22:43:47,013 INFO L78 Accepts]: Start accepts. Automaton has 1202 states and 1536 transitions. Word has length 53 [2021-11-02 22:43:47,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:43:47,015 INFO L470 AbstractCegarLoop]: Abstraction has 1202 states and 1536 transitions. [2021-11-02 22:43:47,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:43:47,016 INFO L276 IsEmpty]: Start isEmpty. Operand 1202 states and 1536 transitions. [2021-11-02 22:43:47,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-02 22:43:47,019 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:43:47,020 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:43:47,038 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-02 22:43:47,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:43:47,233 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr117REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-02 22:43:47,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:43:47,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1870144277, now seen corresponding path program 1 times [2021-11-02 22:43:47,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:43:47,234 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [84324323] [2021-11-02 22:43:47,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:43:47,235 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:43:47,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:43:47,237 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:43:47,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-02 22:43:47,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:43:47,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:43:47,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:43:48,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:43:48,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:43:48,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:43:48,748 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:43:48,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [84324323] [2021-11-02 22:43:48,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [84324323] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:43:48,748 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:43:48,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-02 22:43:48,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208500067] [2021-11-02 22:43:48,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:43:48,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:43:48,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:43:48,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:43:48,750 INFO L87 Difference]: Start difference. First operand 1202 states and 1536 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:43:49,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:43:49,049 INFO L93 Difference]: Finished difference Result 1742 states and 2271 transitions. [2021-11-02 22:43:49,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:43:49,058 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 61 [2021-11-02 22:43:49,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:43:49,065 INFO L225 Difference]: With dead ends: 1742 [2021-11-02 22:43:49,066 INFO L226 Difference]: Without dead ends: 1742 [2021-11-02 22:43:49,066 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:43:49,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1742 states. [2021-11-02 22:43:49,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1742 to 1563. [2021-11-02 22:43:49,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1563 states, 1125 states have (on average 1.9244444444444444) internal successors, (2165), 1546 states have internal predecessors, (2165), 27 states have call successors, (27), 5 states have call predecessors, (27), 4 states have return successors, (26), 12 states have call predecessors, (26), 26 states have call successors, (26) [2021-11-02 22:43:49,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 2218 transitions. [2021-11-02 22:43:49,130 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 2218 transitions. Word has length 61 [2021-11-02 22:43:49,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:43:49,131 INFO L470 AbstractCegarLoop]: Abstraction has 1563 states and 2218 transitions. [2021-11-02 22:43:49,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:43:49,131 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 2218 transitions. [2021-11-02 22:43:49,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-02 22:43:49,137 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:43:49,138 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2021-11-02 22:43:49,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-02 22:43:49,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:43:49,356 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr71REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-02 22:43:49,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:43:49,357 INFO L85 PathProgramCache]: Analyzing trace with hash 740278757, now seen corresponding path program 1 times [2021-11-02 22:43:49,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:43:49,358 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1583958850] [2021-11-02 22:43:49,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:43:49,358 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:43:49,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:43:49,359 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:43:49,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-02 22:43:49,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:43:49,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-02 22:43:49,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:43:49,972 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 [2021-11-02 22:43:49,979 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 [2021-11-02 22:43:50,806 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-02 22:43:50,807 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 27 [2021-11-02 22:43:50,829 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-02 22:43:50,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 20 [2021-11-02 22:43:50,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:43:50,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:43:56,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:43:56,103 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:43:56,104 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1583958850] [2021-11-02 22:43:56,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1583958850] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:43:56,104 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:43:56,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-02 22:43:56,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530820086] [2021-11-02 22:43:56,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:43:56,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:43:56,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:43:56,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-02 22:43:56,105 INFO L87 Difference]: Start difference. First operand 1563 states and 2218 transitions. Second operand has 6 states, 5 states have (on average 23.4) internal successors, (117), 6 states have internal predecessors, (117), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:44:11,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:44:11,162 INFO L93 Difference]: Finished difference Result 2272 states and 3358 transitions. [2021-11-02 22:44:11,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 22:44:11,165 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 23.4) internal successors, (117), 6 states have internal predecessors, (117), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 64 [2021-11-02 22:44:11,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:44:11,182 INFO L225 Difference]: With dead ends: 2272 [2021-11-02 22:44:11,182 INFO L226 Difference]: Without dead ends: 2272 [2021-11-02 22:44:11,182 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=26, Invalid=28, Unknown=2, NotChecked=0, Total=56 [2021-11-02 22:44:11,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2272 states. [2021-11-02 22:44:11,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2272 to 1159. [2021-11-02 22:44:11,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1159 states, 763 states have (on average 1.817824377457405) internal successors, (1387), 1144 states have internal predecessors, (1387), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 10 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-02 22:44:11,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1159 states to 1159 states and 1436 transitions. [2021-11-02 22:44:11,222 INFO L78 Accepts]: Start accepts. Automaton has 1159 states and 1436 transitions. Word has length 64 [2021-11-02 22:44:11,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:44:11,222 INFO L470 AbstractCegarLoop]: Abstraction has 1159 states and 1436 transitions. [2021-11-02 22:44:11,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 23.4) internal successors, (117), 6 states have internal predecessors, (117), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:44:11,223 INFO L276 IsEmpty]: Start isEmpty. Operand 1159 states and 1436 transitions. [2021-11-02 22:44:11,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-02 22:44:11,224 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:44:11,224 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2021-11-02 22:44:11,249 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-11-02 22:44:11,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:44:11,450 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr76REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-02 22:44:11,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:44:11,450 INFO L85 PathProgramCache]: Analyzing trace with hash -2099807298, now seen corresponding path program 1 times [2021-11-02 22:44:11,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:44:11,451 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1738765821] [2021-11-02 22:44:11,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:44:11,451 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:44:11,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:44:11,452 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:44:11,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-02 22:44:12,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:44:12,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-02 22:44:12,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:44:12,201 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 [2021-11-02 22:44:12,222 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-02 22:44:12,287 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 24 treesize of output 12 [2021-11-02 22:44:12,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:44:12,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:44:12,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:44:12,474 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:44:12,474 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1738765821] [2021-11-02 22:44:12,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1738765821] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:44:12,474 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:44:12,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-02 22:44:12,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698136843] [2021-11-02 22:44:12,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:44:12,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:44:12,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:44:12,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:44:12,477 INFO L87 Difference]: Start difference. First operand 1159 states and 1436 transitions. Second operand has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:44:15,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:44:15,873 INFO L93 Difference]: Finished difference Result 1158 states and 1435 transitions. [2021-11-02 22:44:15,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 22:44:15,873 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2021-11-02 22:44:15,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:44:15,879 INFO L225 Difference]: With dead ends: 1158 [2021-11-02 22:44:15,879 INFO L226 Difference]: Without dead ends: 1158 [2021-11-02 22:44:15,880 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-02 22:44:15,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1158 states. [2021-11-02 22:44:15,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1158 to 1158. [2021-11-02 22:44:15,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1158 states, 763 states have (on average 1.81651376146789) internal successors, (1386), 1143 states have internal predecessors, (1386), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 10 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-02 22:44:15,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1158 states to 1158 states and 1435 transitions. [2021-11-02 22:44:15,913 INFO L78 Accepts]: Start accepts. Automaton has 1158 states and 1435 transitions. Word has length 69 [2021-11-02 22:44:15,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:44:15,913 INFO L470 AbstractCegarLoop]: Abstraction has 1158 states and 1435 transitions. [2021-11-02 22:44:15,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:44:15,914 INFO L276 IsEmpty]: Start isEmpty. Operand 1158 states and 1435 transitions. [2021-11-02 22:44:15,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-02 22:44:15,916 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:44:15,916 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2021-11-02 22:44:15,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-02 22:44:16,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:44:16,137 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr77REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-02 22:44:16,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:44:16,137 INFO L85 PathProgramCache]: Analyzing trace with hash -2099807297, now seen corresponding path program 1 times [2021-11-02 22:44:16,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:44:16,138 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [22945572] [2021-11-02 22:44:16,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:44:16,138 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:44:16,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:44:16,140 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:44:16,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-02 22:44:16,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:44:16,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-02 22:44:16,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:44:17,144 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 [2021-11-02 22:44:17,187 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 [2021-11-02 22:44:17,199 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 19 treesize of output 15 [2021-11-02 22:44:17,288 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 39 treesize of output 27 [2021-11-02 22:44:17,293 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 24 treesize of output 12 [2021-11-02 22:44:17,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:44:17,327 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:44:17,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:44:17,695 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:44:17,696 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [22945572] [2021-11-02 22:44:17,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [22945572] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:44:17,696 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:44:17,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-02 22:44:17,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497110050] [2021-11-02 22:44:17,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 22:44:17,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:44:17,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 22:44:17,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-02 22:44:17,698 INFO L87 Difference]: Start difference. First operand 1158 states and 1435 transitions. Second operand has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 8 states have internal predecessors, (73), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:44:27,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:44:27,979 INFO L93 Difference]: Finished difference Result 1157 states and 1434 transitions. [2021-11-02 22:44:27,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 22:44:27,981 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 8 states have internal predecessors, (73), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2021-11-02 22:44:27,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:44:27,986 INFO L225 Difference]: With dead ends: 1157 [2021-11-02 22:44:27,986 INFO L226 Difference]: Without dead ends: 1157 [2021-11-02 22:44:27,987 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-02 22:44:27,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2021-11-02 22:44:28,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1157. [2021-11-02 22:44:28,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1157 states, 762 states have (on average 1.8175853018372703) internal successors, (1385), 1142 states have internal predecessors, (1385), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 10 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-02 22:44:28,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1434 transitions. [2021-11-02 22:44:28,014 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1434 transitions. Word has length 69 [2021-11-02 22:44:28,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:44:28,014 INFO L470 AbstractCegarLoop]: Abstraction has 1157 states and 1434 transitions. [2021-11-02 22:44:28,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 8 states have internal predecessors, (73), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:44:28,015 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1434 transitions. [2021-11-02 22:44:28,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-02 22:44:28,016 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:44:28,016 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:44:28,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-02 22:44:28,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:44:28,233 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-02 22:44:28,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:44:28,233 INFO L85 PathProgramCache]: Analyzing trace with hash 178416389, now seen corresponding path program 1 times [2021-11-02 22:44:28,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:44:28,234 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [814502803] [2021-11-02 22:44:28,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:44:28,235 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:44:28,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:44:28,236 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:44:28,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-02 22:44:28,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:44:28,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:44:28,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:44:29,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:44:29,195 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:44:29,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:44:29,428 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:44:29,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [814502803] [2021-11-02 22:44:29,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [814502803] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:44:29,428 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:44:29,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-02 22:44:29,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720292423] [2021-11-02 22:44:29,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:44:29,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:44:29,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:44:29,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:44:29,430 INFO L87 Difference]: Start difference. First operand 1157 states and 1434 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-02 22:44:29,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:44:29,562 INFO L93 Difference]: Finished difference Result 1167 states and 1447 transitions. [2021-11-02 22:44:29,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 22:44:29,563 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 77 [2021-11-02 22:44:29,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:44:29,573 INFO L225 Difference]: With dead ends: 1167 [2021-11-02 22:44:29,573 INFO L226 Difference]: Without dead ends: 1167 [2021-11-02 22:44:29,573 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-02 22:44:29,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1167 states. [2021-11-02 22:44:29,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1167 to 1167. [2021-11-02 22:44:29,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1167 states, 770 states have (on average 1.8142857142857143) internal successors, (1397), 1151 states have internal predecessors, (1397), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 10 states have call predecessors, (25), 24 states have call successors, (25) [2021-11-02 22:44:29,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1167 states to 1167 states and 1447 transitions. [2021-11-02 22:44:29,606 INFO L78 Accepts]: Start accepts. Automaton has 1167 states and 1447 transitions. Word has length 77 [2021-11-02 22:44:29,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:44:29,606 INFO L470 AbstractCegarLoop]: Abstraction has 1167 states and 1447 transitions. [2021-11-02 22:44:29,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-02 22:44:29,607 INFO L276 IsEmpty]: Start isEmpty. Operand 1167 states and 1447 transitions. [2021-11-02 22:44:29,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-02 22:44:29,608 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:44:29,608 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:44:29,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-02 22:44:29,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:44:29,828 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-02 22:44:29,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:44:29,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1398946491, now seen corresponding path program 1 times [2021-11-02 22:44:29,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:44:29,829 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [11534063] [2021-11-02 22:44:29,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:44:29,829 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:44:29,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:44:29,830 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:44:29,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-02 22:44:30,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:44:30,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-02 22:44:30,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:44:30,778 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:44:30,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:44:31,126 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:44:31,127 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:44:31,127 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [11534063] [2021-11-02 22:44:31,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [11534063] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 22:44:31,128 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:44:31,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-11-02 22:44:31,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980046372] [2021-11-02 22:44:31,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 22:44:31,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:44:31,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 22:44:31,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-02 22:44:31,129 INFO L87 Difference]: Start difference. First operand 1167 states and 1447 transitions. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-02 22:44:31,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:44:31,533 INFO L93 Difference]: Finished difference Result 1181 states and 1465 transitions. [2021-11-02 22:44:31,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-02 22:44:31,534 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 79 [2021-11-02 22:44:31,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:44:31,540 INFO L225 Difference]: With dead ends: 1181 [2021-11-02 22:44:31,541 INFO L226 Difference]: Without dead ends: 1177 [2021-11-02 22:44:31,541 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=193, Unknown=0, NotChecked=0, Total=306 [2021-11-02 22:44:31,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1177 states. [2021-11-02 22:44:31,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1177 to 1173. [2021-11-02 22:44:31,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1173 states, 776 states have (on average 1.8105670103092784) internal successors, (1405), 1157 states have internal predecessors, (1405), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 10 states have call predecessors, (25), 24 states have call successors, (25) [2021-11-02 22:44:31,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1173 states to 1173 states and 1455 transitions. [2021-11-02 22:44:31,569 INFO L78 Accepts]: Start accepts. Automaton has 1173 states and 1455 transitions. Word has length 79 [2021-11-02 22:44:31,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:44:31,570 INFO L470 AbstractCegarLoop]: Abstraction has 1173 states and 1455 transitions. [2021-11-02 22:44:31,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-02 22:44:31,570 INFO L276 IsEmpty]: Start isEmpty. Operand 1173 states and 1455 transitions. [2021-11-02 22:44:31,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-02 22:44:31,571 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:44:31,571 INFO L513 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:44:31,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-02 22:44:31,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:44:31,785 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-02 22:44:31,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:44:31,785 INFO L85 PathProgramCache]: Analyzing trace with hash -512767547, now seen corresponding path program 2 times [2021-11-02 22:44:31,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:44:31,786 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [548794061] [2021-11-02 22:44:31,786 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:44:31,786 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:44:31,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:44:31,787 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:44:31,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-02 22:44:32,601 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:44:32,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:44:32,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-02 22:44:32,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:44:32,926 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:44:32,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:44:33,561 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:44:33,561 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:44:33,561 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [548794061] [2021-11-02 22:44:33,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [548794061] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 22:44:33,561 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:44:33,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-11-02 22:44:33,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429597079] [2021-11-02 22:44:33,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-02 22:44:33,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:44:33,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-02 22:44:33,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-11-02 22:44:33,563 INFO L87 Difference]: Start difference. First operand 1173 states and 1455 transitions. Second operand has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-02 22:44:35,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:44:35,305 INFO L93 Difference]: Finished difference Result 1201 states and 1493 transitions. [2021-11-02 22:44:35,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-02 22:44:35,306 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 83 [2021-11-02 22:44:35,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:44:35,314 INFO L225 Difference]: With dead ends: 1201 [2021-11-02 22:44:35,314 INFO L226 Difference]: Without dead ends: 1197 [2021-11-02 22:44:35,315 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=457, Invalid=949, Unknown=0, NotChecked=0, Total=1406 [2021-11-02 22:44:35,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1197 states. [2021-11-02 22:44:35,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1197 to 1185. [2021-11-02 22:44:35,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1185 states, 788 states have (on average 1.8032994923857868) internal successors, (1421), 1169 states have internal predecessors, (1421), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 10 states have call predecessors, (25), 24 states have call successors, (25) [2021-11-02 22:44:35,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1185 states to 1185 states and 1471 transitions. [2021-11-02 22:44:35,353 INFO L78 Accepts]: Start accepts. Automaton has 1185 states and 1471 transitions. Word has length 83 [2021-11-02 22:44:35,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:44:35,354 INFO L470 AbstractCegarLoop]: Abstraction has 1185 states and 1471 transitions. [2021-11-02 22:44:35,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-02 22:44:35,354 INFO L276 IsEmpty]: Start isEmpty. Operand 1185 states and 1471 transitions. [2021-11-02 22:44:35,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-02 22:44:35,355 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:44:35,355 INFO L513 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:44:35,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-02 22:44:35,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:44:35,572 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-02 22:44:35,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:44:35,573 INFO L85 PathProgramCache]: Analyzing trace with hash 326177477, now seen corresponding path program 3 times [2021-11-02 22:44:35,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:44:35,573 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1020028630] [2021-11-02 22:44:35,573 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:44:35,574 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:44:35,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:44:35,574 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:44:35,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-02 22:44:36,883 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-02 22:44:36,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:44:36,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-02 22:44:36,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:44:37,421 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:44:37,421 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:44:38,963 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:44:38,963 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:44:38,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1020028630] [2021-11-02 22:44:38,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1020028630] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 22:44:38,964 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:44:38,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2021-11-02 22:44:38,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761335936] [2021-11-02 22:44:38,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-02 22:44:38,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:44:38,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-02 22:44:38,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2021-11-02 22:44:38,967 INFO L87 Difference]: Start difference. First operand 1185 states and 1471 transitions. Second operand has 34 states, 34 states have (on average 3.0294117647058822) internal successors, (103), 34 states have internal predecessors, (103), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-02 22:44:46,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:44:46,545 INFO L93 Difference]: Finished difference Result 1241 states and 1549 transitions. [2021-11-02 22:44:46,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-11-02 22:44:46,546 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.0294117647058822) internal successors, (103), 34 states have internal predecessors, (103), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 91 [2021-11-02 22:44:46,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:44:46,553 INFO L225 Difference]: With dead ends: 1241 [2021-11-02 22:44:46,553 INFO L226 Difference]: Without dead ends: 1237 [2021-11-02 22:44:46,555 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 596 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=1817, Invalid=4189, Unknown=0, NotChecked=0, Total=6006 [2021-11-02 22:44:46,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1237 states. [2021-11-02 22:44:46,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1237 to 1209. [2021-11-02 22:44:46,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1209 states, 812 states have (on average 1.7894088669950738) internal successors, (1453), 1193 states have internal predecessors, (1453), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 10 states have call predecessors, (25), 24 states have call successors, (25) [2021-11-02 22:44:46,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1209 states to 1209 states and 1503 transitions. [2021-11-02 22:44:46,592 INFO L78 Accepts]: Start accepts. Automaton has 1209 states and 1503 transitions. Word has length 91 [2021-11-02 22:44:46,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:44:46,593 INFO L470 AbstractCegarLoop]: Abstraction has 1209 states and 1503 transitions. [2021-11-02 22:44:46,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.0294117647058822) internal successors, (103), 34 states have internal predecessors, (103), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-02 22:44:46,593 INFO L276 IsEmpty]: Start isEmpty. Operand 1209 states and 1503 transitions. [2021-11-02 22:44:46,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-02 22:44:46,594 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:44:46,595 INFO L513 BasicCegarLoop]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:44:46,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-02 22:44:46,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:44:46,817 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-02 22:44:46,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:44:46,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1201101627, now seen corresponding path program 4 times [2021-11-02 22:44:46,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:44:46,818 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [415174993] [2021-11-02 22:44:46,818 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 22:44:46,818 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:44:46,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:44:46,819 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:44:46,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-02 22:44:47,583 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 22:44:47,583 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:44:47,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-02 22:44:47,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:44:48,916 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:44:48,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:44:53,656 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:44:53,656 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:44:53,656 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [415174993] [2021-11-02 22:44:53,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [415174993] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 22:44:53,657 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:44:53,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 66 [2021-11-02 22:44:53,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531154684] [2021-11-02 22:44:53,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-02 22:44:53,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:44:53,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-02 22:44:53,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1000, Invalid=3290, Unknown=0, NotChecked=0, Total=4290 [2021-11-02 22:44:53,660 INFO L87 Difference]: Start difference. First operand 1209 states and 1503 transitions. Second operand has 66 states, 66 states have (on average 2.0454545454545454) internal successors, (135), 66 states have internal predecessors, (135), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-02 22:45:09,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:45:09,794 INFO L93 Difference]: Finished difference Result 1303 states and 1625 transitions. [2021-11-02 22:45:09,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2021-11-02 22:45:09,795 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.0454545454545454) internal successors, (135), 66 states have internal predecessors, (135), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 107 [2021-11-02 22:45:09,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:45:09,801 INFO L225 Difference]: With dead ends: 1303 [2021-11-02 22:45:09,802 INFO L226 Difference]: Without dead ends: 1299 [2021-11-02 22:45:09,808 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2373 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=4552, Invalid=14908, Unknown=0, NotChecked=0, Total=19460 [2021-11-02 22:45:09,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1299 states. [2021-11-02 22:45:09,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1299 to 1239. [2021-11-02 22:45:09,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1239 states, 842 states have (on average 1.7802850356294537) internal successors, (1499), 1223 states have internal predecessors, (1499), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 10 states have call predecessors, (25), 24 states have call successors, (25) [2021-11-02 22:45:09,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1239 states to 1239 states and 1549 transitions. [2021-11-02 22:45:09,864 INFO L78 Accepts]: Start accepts. Automaton has 1239 states and 1549 transitions. Word has length 107 [2021-11-02 22:45:09,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:45:09,864 INFO L470 AbstractCegarLoop]: Abstraction has 1239 states and 1549 transitions. [2021-11-02 22:45:09,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 2.0454545454545454) internal successors, (135), 66 states have internal predecessors, (135), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-02 22:45:09,865 INFO L276 IsEmpty]: Start isEmpty. Operand 1239 states and 1549 transitions. [2021-11-02 22:45:09,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-02 22:45:09,866 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:45:09,866 INFO L513 BasicCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:45:09,885 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-02 22:45:10,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:45:10,066 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-02 22:45:10,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:45:10,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1844395141, now seen corresponding path program 5 times [2021-11-02 22:45:10,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:45:10,068 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1600577426] [2021-11-02 22:45:10,068 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:45:10,068 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:45:10,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:45:10,069 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:45:10,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb702ae5-c8bd-4079-bec7-412bd2e78c6b/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-02 22:45:11,900 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2021-11-02 22:45:11,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:45:11,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-02 22:45:11,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:45:11,955 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 [2021-11-02 22:45:12,201 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-02 22:45:12,201 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 20 treesize of output 27 [2021-11-02 22:45:12,245 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 26 treesize of output 22 [2021-11-02 22:45:12,429 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 36 treesize of output 24