./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-1.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_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/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_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/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_ac325084-9de6-46c9-8d26-a7f9d1288356/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 69d24e9affd7540aafb8052ecd737d7732ca2a63c7e8e16adc4217413d1d99a5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 22:11:55,083 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:11:55,086 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:11:55,137 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:11:55,138 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:11:55,139 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:11:55,141 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:11:55,144 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:11:55,147 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:11:55,148 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:11:55,149 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:11:55,151 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:11:55,152 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:11:55,153 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:11:55,155 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:11:55,157 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:11:55,158 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:11:55,159 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:11:55,162 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:11:55,165 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:11:55,167 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:11:55,168 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:11:55,170 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:11:55,171 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:11:55,175 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:11:55,176 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:11:55,177 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:11:55,178 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:11:55,179 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:11:55,180 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:11:55,180 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:11:55,181 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:11:55,183 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:11:55,184 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:11:55,185 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:11:55,185 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:11:55,186 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:11:55,187 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:11:55,187 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:11:55,189 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:11:55,190 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:11:55,191 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-02 22:11:55,219 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:11:55,219 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:11:55,219 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:11:55,219 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:11:55,221 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:11:55,221 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:11:55,221 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:11:55,221 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:11:55,222 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 22:11:55,222 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-02 22:11:55,222 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:11:55,222 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 22:11:55,222 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:11:55,223 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-02 22:11:55,223 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-02 22:11:55,223 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-02 22:11:55,223 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 22:11:55,223 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-02 22:11:55,224 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 22:11:55,224 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:11:55,224 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:11:55,224 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:11:55,224 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 22:11:55,225 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:11:55,225 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:11:55,225 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 22:11:55,225 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 22:11:55,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 22:11:55,226 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:11:55,226 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_ac325084-9de6-46c9-8d26-a7f9d1288356/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 69d24e9affd7540aafb8052ecd737d7732ca2a63c7e8e16adc4217413d1d99a5 [2021-11-02 22:11:55,490 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:11:55,540 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:11:55,550 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:11:55,552 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:11:55,555 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:11:55,556 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-1.i [2021-11-02 22:11:55,675 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/data/54f0c1e79/8e2d69358f1d45ea8d45a3fddf2fa3d3/FLAGc16f4c425 [2021-11-02 22:11:56,275 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:11:56,275 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-1.i [2021-11-02 22:11:56,309 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/data/54f0c1e79/8e2d69358f1d45ea8d45a3fddf2fa3d3/FLAGc16f4c425 [2021-11-02 22:11:56,507 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/data/54f0c1e79/8e2d69358f1d45ea8d45a3fddf2fa3d3 [2021-11-02 22:11:56,510 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:11:56,511 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-02 22:11:56,513 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:11:56,514 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:11:56,517 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:11:56,518 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:11:56" (1/1) ... [2021-11-02 22:11:56,520 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ff36856 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:11:56, skipping insertion in model container [2021-11-02 22:11:56,520 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:11:56" (1/1) ... [2021-11-02 22:11:56,537 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:11:56,612 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:11:57,226 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_ac325084-9de6-46c9-8d26-a7f9d1288356/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-1.i[37019,37032] [2021-11-02 22:11:57,383 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_ac325084-9de6-46c9-8d26-a7f9d1288356/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-1.i[47352,47365] [2021-11-02 22:11:57,397 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:11:57,419 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 22:11:57,420 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1d87167b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:11:57, skipping insertion in model container [2021-11-02 22:11:57,420 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:11:57,421 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-11-02 22:11:57,424 INFO L168 Benchmark]: Toolchain (without parser) took 910.72 ms. Allocated memory was 98.6 MB in the beginning and 132.1 MB in the end (delta: 33.6 MB). Free memory was 57.2 MB in the beginning and 101.5 MB in the end (delta: -44.3 MB). Peak memory consumption was 16.5 MB. Max. memory is 16.1 GB. [2021-11-02 22:11:57,425 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 98.6 MB. Free memory is still 76.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 22:11:57,426 INFO L168 Benchmark]: CACSL2BoogieTranslator took 907.70 ms. Allocated memory was 98.6 MB in the beginning and 132.1 MB in the end (delta: 33.6 MB). Free memory was 57.0 MB in the beginning and 101.5 MB in the end (delta: -44.6 MB). Peak memory consumption was 16.5 MB. Max. memory is 16.1 GB. [2021-11-02 22:11:57,429 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 98.6 MB. Free memory is still 76.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 907.70 ms. Allocated memory was 98.6 MB in the beginning and 132.1 MB in the end (delta: 33.6 MB). Free memory was 57.0 MB in the beginning and 101.5 MB in the end (delta: -44.6 MB). Peak memory consumption was 16.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 815]: 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_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/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_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/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_ac325084-9de6-46c9-8d26-a7f9d1288356/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 69d24e9affd7540aafb8052ecd737d7732ca2a63c7e8e16adc4217413d1d99a5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 22:12:00,118 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:12:00,121 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:12:00,162 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:12:00,162 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:12:00,164 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:12:00,166 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:12:00,169 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:12:00,172 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:12:00,174 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:12:00,175 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:12:00,177 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:12:00,178 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:12:00,180 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:12:00,182 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:12:00,184 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:12:00,185 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:12:00,187 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:12:00,203 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:12:00,207 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:12:00,209 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:12:00,215 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:12:00,217 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:12:00,218 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:12:00,223 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:12:00,224 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:12:00,224 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:12:00,226 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:12:00,227 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:12:00,233 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:12:00,233 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:12:00,235 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:12:00,238 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:12:00,239 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:12:00,244 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:12:00,245 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:12:00,246 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:12:00,246 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:12:00,247 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:12:00,249 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:12:00,250 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:12:00,256 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-02 22:12:00,320 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:12:00,320 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:12:00,321 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:12:00,321 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:12:00,322 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:12:00,323 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:12:00,323 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:12:00,323 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:12:00,324 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 22:12:00,327 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-02 22:12:00,328 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:12:00,329 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 22:12:00,329 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:12:00,329 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-02 22:12:00,329 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-02 22:12:00,330 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-02 22:12:00,330 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 22:12:00,330 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-02 22:12:00,330 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-02 22:12:00,330 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-02 22:12:00,331 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 22:12:00,331 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:12:00,331 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:12:00,332 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:12:00,332 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 22:12:00,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:12:00,333 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:12:00,333 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 22:12:00,333 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-02 22:12:00,333 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-02 22:12:00,334 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:12:00,334 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-02 22:12:00,334 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_ac325084-9de6-46c9-8d26-a7f9d1288356/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 69d24e9affd7540aafb8052ecd737d7732ca2a63c7e8e16adc4217413d1d99a5 [2021-11-02 22:12:00,711 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:12:00,750 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:12:00,754 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:12:00,755 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:12:00,756 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:12:00,759 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-1.i [2021-11-02 22:12:00,840 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/data/30241e53a/3be2cf3cd69d4448b6e72ad70680f351/FLAGaf451ac13 [2021-11-02 22:12:01,625 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:12:01,626 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-1.i [2021-11-02 22:12:01,661 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/data/30241e53a/3be2cf3cd69d4448b6e72ad70680f351/FLAGaf451ac13 [2021-11-02 22:12:01,780 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/data/30241e53a/3be2cf3cd69d4448b6e72ad70680f351 [2021-11-02 22:12:01,785 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:12:01,787 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-02 22:12:01,789 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:12:01,790 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:12:01,794 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:12:01,795 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:12:01" (1/1) ... [2021-11-02 22:12:01,796 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bd92c51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:12:01, skipping insertion in model container [2021-11-02 22:12:01,796 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:12:01" (1/1) ... [2021-11-02 22:12:01,806 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:12:01,891 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:12:02,479 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_ac325084-9de6-46c9-8d26-a7f9d1288356/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-1.i[37019,37032] [2021-11-02 22:12:02,674 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_ac325084-9de6-46c9-8d26-a7f9d1288356/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-1.i[47352,47365] [2021-11-02 22:12:02,681 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:12:02,697 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-02 22:12:02,721 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:12:02,758 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_ac325084-9de6-46c9-8d26-a7f9d1288356/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-1.i[37019,37032] [2021-11-02 22:12:02,878 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_ac325084-9de6-46c9-8d26-a7f9d1288356/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-1.i[47352,47365] [2021-11-02 22:12:02,881 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:12:02,887 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 22:12:02,921 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_ac325084-9de6-46c9-8d26-a7f9d1288356/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-1.i[37019,37032] [2021-11-02 22:12:02,969 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_ac325084-9de6-46c9-8d26-a7f9d1288356/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-1.i[47352,47365] [2021-11-02 22:12:02,973 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:12:03,037 INFO L208 MainTranslator]: Completed translation [2021-11-02 22:12:03,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:12:03 WrapperNode [2021-11-02 22:12:03,038 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:12:03,039 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 22:12:03,040 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 22:12:03,040 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 22:12:03,052 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:12:03" (1/1) ... [2021-11-02 22:12:03,052 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:12:03" (1/1) ... [2021-11-02 22:12:03,088 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:12:03" (1/1) ... [2021-11-02 22:12:03,088 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:12:03" (1/1) ... [2021-11-02 22:12:03,177 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:12:03" (1/1) ... [2021-11-02 22:12:03,201 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:12:03" (1/1) ... [2021-11-02 22:12:03,214 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:12:03" (1/1) ... [2021-11-02 22:12:03,229 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 22:12:03,230 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 22:12:03,230 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 22:12:03,230 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 22:12:03,231 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:12:03" (1/1) ... [2021-11-02 22:12:03,244 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:12:03,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:12:03,286 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 22:12:03,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 22:12:03,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-02 22:12:03,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 22:12:03,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-11-02 22:12:03,368 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-02 22:12:03,368 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-02 22:12:03,370 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-02 22:12:03,370 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-02 22:12:03,371 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-02 22:12:03,371 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-02 22:12:03,371 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-02 22:12:03,371 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2021-11-02 22:12:03,372 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-02 22:12:03,372 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-02 22:12:03,372 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-11-02 22:12:03,372 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-11-02 22:12:03,372 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-11-02 22:12:03,372 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-11-02 22:12:03,373 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-02 22:12:03,373 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-11-02 22:12:03,373 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-11-02 22:12:03,373 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-02 22:12:03,373 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-11-02 22:12:03,373 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-11-02 22:12:03,373 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-11-02 22:12:03,374 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-02 22:12:03,374 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-11-02 22:12:03,374 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-11-02 22:12:03,374 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-11-02 22:12:03,374 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-11-02 22:12:03,374 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-11-02 22:12:03,374 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-11-02 22:12:03,375 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-11-02 22:12:03,375 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-02 22:12:03,375 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-11-02 22:12:03,376 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-11-02 22:12:03,376 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-11-02 22:12:03,376 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-11-02 22:12:03,377 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-11-02 22:12:03,377 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-11-02 22:12:03,377 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-11-02 22:12:03,377 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-11-02 22:12:03,377 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-11-02 22:12:03,378 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-11-02 22:12:03,378 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-11-02 22:12:03,378 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-11-02 22:12:03,378 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-11-02 22:12:03,378 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-11-02 22:12:03,379 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-11-02 22:12:03,379 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-11-02 22:12:03,379 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-11-02 22:12:03,379 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-11-02 22:12:03,379 INFO L130 BoogieDeclarations]: Found specification of procedure ffsl [2021-11-02 22:12:03,380 INFO L130 BoogieDeclarations]: Found specification of procedure ffsll [2021-11-02 22:12:03,380 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-11-02 22:12:03,380 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-11-02 22:12:03,380 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp_l [2021-11-02 22:12:03,382 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp_l [2021-11-02 22:12:03,382 INFO L130 BoogieDeclarations]: Found specification of procedure explicit_bzero [2021-11-02 22:12:03,383 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-11-02 22:12:03,384 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-11-02 22:12:03,384 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-11-02 22:12:03,385 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-11-02 22:12:03,385 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-11-02 22:12:03,385 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-11-02 22:12:03,385 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-02 22:12:03,386 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-02 22:12:03,386 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-02 22:12:03,386 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-02 22:12:03,386 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-02 22:12:03,386 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-02 22:12:03,386 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-02 22:12:03,386 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-02 22:12:03,387 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-02 22:12:03,388 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-02 22:12:03,388 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-02 22:12:03,388 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-02 22:12:03,388 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-02 22:12:03,388 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-02 22:12:03,388 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-02 22:12:03,389 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-02 22:12:03,389 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-02 22:12:03,389 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-02 22:12:03,389 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-02 22:12:03,389 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-02 22:12:03,389 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-02 22:12:03,389 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-02 22:12:03,390 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-02 22:12:03,390 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-02 22:12:03,390 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-02 22:12:03,390 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-02 22:12:03,390 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-02 22:12:03,390 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-02 22:12:03,390 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-02 22:12:03,391 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-02 22:12:03,391 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-02 22:12:03,391 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-02 22:12:03,391 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-02 22:12:03,392 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-02 22:12:03,392 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-02 22:12:03,392 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-02 22:12:03,392 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-02 22:12:03,392 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-02 22:12:03,392 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-02 22:12:03,392 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-02 22:12:03,393 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-02 22:12:03,393 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-02 22:12:03,393 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-02 22:12:03,393 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-02 22:12:03,393 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-02 22:12:03,393 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-02 22:12:03,393 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-02 22:12:03,394 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-02 22:12:03,394 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-02 22:12:03,394 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-02 22:12:03,394 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-02 22:12:03,395 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-02 22:12:03,395 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-02 22:12:03,396 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-02 22:12:03,399 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-02 22:12:03,400 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-02 22:12:03,400 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-02 22:12:03,400 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-02 22:12:03,401 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-02 22:12:03,402 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-02 22:12:03,402 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-02 22:12:03,402 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-02 22:12:03,402 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-02 22:12:03,408 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-02 22:12:03,408 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-02 22:12:03,408 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-02 22:12:03,408 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-02 22:12:03,408 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-02 22:12:03,408 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-02 22:12:03,409 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-02 22:12:03,409 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-02 22:12:03,409 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-02 22:12:03,409 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-02 22:12:03,409 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-02 22:12:03,409 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-02 22:12:03,409 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-02 22:12:03,410 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-02 22:12:03,410 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-02 22:12:03,410 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-02 22:12:03,410 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-02 22:12:03,410 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-02 22:12:03,410 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-02 22:12:03,410 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-02 22:12:03,410 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-02 22:12:03,411 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-02 22:12:03,411 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-02 22:12:03,411 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-02 22:12:03,411 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-02 22:12:03,411 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-02 22:12:03,411 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-02 22:12:03,411 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-02 22:12:03,412 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-02 22:12:03,412 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-02 22:12:03,412 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-02 22:12:03,412 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-02 22:12:03,412 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-02 22:12:03,412 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-02 22:12:03,412 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-02 22:12:03,412 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-02 22:12:03,413 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-02 22:12:03,413 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-02 22:12:03,413 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-02 22:12:03,413 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-02 22:12:03,413 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-02 22:12:03,413 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-02 22:12:03,413 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-02 22:12:03,414 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-02 22:12:03,414 INFO L130 BoogieDeclarations]: Found specification of procedure clock [2021-11-02 22:12:03,414 INFO L130 BoogieDeclarations]: Found specification of procedure time [2021-11-02 22:12:03,414 INFO L130 BoogieDeclarations]: Found specification of procedure difftime [2021-11-02 22:12:03,414 INFO L130 BoogieDeclarations]: Found specification of procedure mktime [2021-11-02 22:12:03,414 INFO L130 BoogieDeclarations]: Found specification of procedure strftime [2021-11-02 22:12:03,414 INFO L130 BoogieDeclarations]: Found specification of procedure strftime_l [2021-11-02 22:12:03,414 INFO L130 BoogieDeclarations]: Found specification of procedure gmtime [2021-11-02 22:12:03,415 INFO L130 BoogieDeclarations]: Found specification of procedure localtime [2021-11-02 22:12:03,415 INFO L130 BoogieDeclarations]: Found specification of procedure gmtime_r [2021-11-02 22:12:03,415 INFO L130 BoogieDeclarations]: Found specification of procedure localtime_r [2021-11-02 22:12:03,415 INFO L130 BoogieDeclarations]: Found specification of procedure asctime [2021-11-02 22:12:03,415 INFO L130 BoogieDeclarations]: Found specification of procedure ctime [2021-11-02 22:12:03,415 INFO L130 BoogieDeclarations]: Found specification of procedure asctime_r [2021-11-02 22:12:03,415 INFO L130 BoogieDeclarations]: Found specification of procedure ctime_r [2021-11-02 22:12:03,415 INFO L130 BoogieDeclarations]: Found specification of procedure tzset [2021-11-02 22:12:03,416 INFO L130 BoogieDeclarations]: Found specification of procedure stime [2021-11-02 22:12:03,416 INFO L130 BoogieDeclarations]: Found specification of procedure timegm [2021-11-02 22:12:03,416 INFO L130 BoogieDeclarations]: Found specification of procedure timelocal [2021-11-02 22:12:03,416 INFO L130 BoogieDeclarations]: Found specification of procedure dysize [2021-11-02 22:12:03,416 INFO L130 BoogieDeclarations]: Found specification of procedure nanosleep [2021-11-02 22:12:03,416 INFO L130 BoogieDeclarations]: Found specification of procedure clock_getres [2021-11-02 22:12:03,416 INFO L130 BoogieDeclarations]: Found specification of procedure clock_gettime [2021-11-02 22:12:03,417 INFO L130 BoogieDeclarations]: Found specification of procedure clock_settime [2021-11-02 22:12:03,417 INFO L130 BoogieDeclarations]: Found specification of procedure clock_nanosleep [2021-11-02 22:12:03,417 INFO L130 BoogieDeclarations]: Found specification of procedure clock_getcpuclockid [2021-11-02 22:12:03,417 INFO L130 BoogieDeclarations]: Found specification of procedure timer_create [2021-11-02 22:12:03,417 INFO L130 BoogieDeclarations]: Found specification of procedure timer_delete [2021-11-02 22:12:03,417 INFO L130 BoogieDeclarations]: Found specification of procedure timer_settime [2021-11-02 22:12:03,417 INFO L130 BoogieDeclarations]: Found specification of procedure timer_gettime [2021-11-02 22:12:03,417 INFO L130 BoogieDeclarations]: Found specification of procedure timer_getoverrun [2021-11-02 22:12:03,418 INFO L130 BoogieDeclarations]: Found specification of procedure timespec_get [2021-11-02 22:12:03,418 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-02 22:12:03,418 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-02 22:12:03,418 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-02 22:12:03,418 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-02 22:12:03,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 22:12:03,418 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-02 22:12:03,419 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2021-11-02 22:12:03,419 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-02 22:12:03,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 22:12:03,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-02 22:12:03,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-02 22:12:03,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-02 22:12:03,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 22:12:03,420 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 22:12:03,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-02 22:12:03,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 22:12:03,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-02 22:12:03,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-02 22:12:03,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 22:12:03,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-11-02 22:12:03,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-02 22:12:04,078 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-02 22:12:09,251 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 22:12:09,252 INFO L299 CfgBuilder]: Removed 54 assume(true) statements. [2021-11-02 22:12:09,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:12:09 BoogieIcfgContainer [2021-11-02 22:12:09,256 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 22:12:09,259 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 22:12:09,259 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 22:12:09,263 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 22:12:09,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 10:12:01" (1/3) ... [2021-11-02 22:12:09,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@726e0b15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:12:09, skipping insertion in model container [2021-11-02 22:12:09,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:12:03" (2/3) ... [2021-11-02 22:12:09,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@726e0b15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:12:09, skipping insertion in model container [2021-11-02 22:12:09,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:12:09" (3/3) ... [2021-11-02 22:12:09,270 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test2-1.i [2021-11-02 22:12:09,277 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 22:12:09,277 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 431 error locations. [2021-11-02 22:12:09,343 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 22:12:09,353 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 22:12:09,354 INFO L340 AbstractCegarLoop]: Starting to check reachability of 431 error locations. [2021-11-02 22:12:09,423 INFO L276 IsEmpty]: Start isEmpty. Operand has 890 states, 445 states have (on average 2.2112359550561798) internal successors, (984), 878 states have internal predecessors, (984), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-02 22:12:09,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-02 22:12:09,433 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:12:09,438 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:12:09,439 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 427 more)] === [2021-11-02 22:12:09,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:12:09,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1238623229, now seen corresponding path program 1 times [2021-11-02 22:12:09,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:12:09,459 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1804398519] [2021-11-02 22:12:09,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:12:09,461 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:12:09,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:12:09,467 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:12:09,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-02 22:12:09,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:12:09,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-02 22:12:09,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:12:09,929 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 22:12:09,942 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 22:12:09,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:12:10,002 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 22:12:10,003 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:12:10,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1804398519] [2021-11-02 22:12:10,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1804398519] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:12:10,004 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:12:10,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-02 22:12:10,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594104569] [2021-11-02 22:12:10,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:12:10,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:12:10,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:12:10,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:12:10,043 INFO L87 Difference]: Start difference. First operand has 890 states, 445 states have (on average 2.2112359550561798) internal successors, (984), 878 states have internal predecessors, (984), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) 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 22:12:12,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:12:12,150 INFO L93 Difference]: Finished difference Result 877 states and 933 transitions. [2021-11-02 22:12:12,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:12:12,152 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 22:12:12,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:12:12,178 INFO L225 Difference]: With dead ends: 877 [2021-11-02 22:12:12,178 INFO L226 Difference]: Without dead ends: 874 [2021-11-02 22:12:12,184 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 22:12:12,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2021-11-02 22:12:12,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 873. [2021-11-02 22:12:12,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 445 states have (on average 2.042696629213483) internal successors, (909), 862 states have internal predecessors, (909), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-02 22:12:12,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 930 transitions. [2021-11-02 22:12:12,336 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 930 transitions. Word has length 7 [2021-11-02 22:12:12,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:12:12,337 INFO L470 AbstractCegarLoop]: Abstraction has 873 states and 930 transitions. [2021-11-02 22:12:12,337 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 22:12:12,337 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 930 transitions. [2021-11-02 22:12:12,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-02 22:12:12,338 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:12:12,338 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:12:12,356 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-02 22:12:12,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:12:12,552 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 427 more)] === [2021-11-02 22:12:12,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:12:12,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1238623228, now seen corresponding path program 1 times [2021-11-02 22:12:12,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:12:12,554 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [244577036] [2021-11-02 22:12:12,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:12:12,554 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:12:12,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:12:12,557 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:12:12,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-02 22:12:12,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:12:12,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:12:12,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:12:12,810 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 22:12:12,831 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 22:12:12,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:12:12,925 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 22:12:12,926 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:12:12,926 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [244577036] [2021-11-02 22:12:12,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [244577036] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:12:12,926 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:12:12,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-02 22:12:12,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278164368] [2021-11-02 22:12:12,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:12:12,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:12:12,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:12:12,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:12:12,930 INFO L87 Difference]: Start difference. First operand 873 states and 930 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 22:12:17,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:12:17,904 INFO L93 Difference]: Finished difference Result 1156 states and 1238 transitions. [2021-11-02 22:12:17,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:12:17,905 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 22:12:17,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:12:17,912 INFO L225 Difference]: With dead ends: 1156 [2021-11-02 22:12:17,912 INFO L226 Difference]: Without dead ends: 1156 [2021-11-02 22:12:17,913 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 22:12:17,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1156 states. [2021-11-02 22:12:17,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1156 to 908. [2021-11-02 22:12:17,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 908 states, 489 states have (on average 2.0204498977505114) internal successors, (988), 897 states have internal predecessors, (988), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-02 22:12:17,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 908 states to 908 states and 1009 transitions. [2021-11-02 22:12:17,948 INFO L78 Accepts]: Start accepts. Automaton has 908 states and 1009 transitions. Word has length 7 [2021-11-02 22:12:17,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:12:17,949 INFO L470 AbstractCegarLoop]: Abstraction has 908 states and 1009 transitions. [2021-11-02 22:12:17,949 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 22:12:17,949 INFO L276 IsEmpty]: Start isEmpty. Operand 908 states and 1009 transitions. [2021-11-02 22:12:17,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-02 22:12:17,950 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:12:17,950 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:12:17,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-02 22:12:18,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:12:18,162 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr6REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 427 more)] === [2021-11-02 22:12:18,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:12:18,163 INFO L85 PathProgramCache]: Analyzing trace with hash 372320716, now seen corresponding path program 1 times [2021-11-02 22:12:18,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:12:18,164 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1922047041] [2021-11-02 22:12:18,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:12:18,164 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:12:18,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:12:18,166 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:12:18,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-02 22:12:18,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:12:18,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-02 22:12:18,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:12:18,495 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 22:12:18,514 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 22:12:18,514 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:12:18,556 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 22:12:18,556 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:12:18,557 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1922047041] [2021-11-02 22:12:18,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1922047041] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:12:18,557 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:12:18,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-02 22:12:18,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218552492] [2021-11-02 22:12:18,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:12:18,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:12:18,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:12:18,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:12:18,560 INFO L87 Difference]: Start difference. First operand 908 states and 1009 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 22:12:20,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:12:20,727 INFO L93 Difference]: Finished difference Result 1074 states and 1193 transitions. [2021-11-02 22:12:20,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:12:20,729 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 22:12:20,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:12:20,737 INFO L225 Difference]: With dead ends: 1074 [2021-11-02 22:12:20,737 INFO L226 Difference]: Without dead ends: 1074 [2021-11-02 22:12:20,738 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 22:12:20,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1074 states. [2021-11-02 22:12:20,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1074 to 861. [2021-11-02 22:12:20,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 861 states, 489 states have (on average 1.918200408997955) internal successors, (938), 850 states have internal predecessors, (938), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-02 22:12:20,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 959 transitions. [2021-11-02 22:12:20,772 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 959 transitions. Word has length 12 [2021-11-02 22:12:20,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:12:20,773 INFO L470 AbstractCegarLoop]: Abstraction has 861 states and 959 transitions. [2021-11-02 22:12:20,773 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 22:12:20,773 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 959 transitions. [2021-11-02 22:12:20,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-02 22:12:20,774 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:12:20,774 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:12:20,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-02 22:12:20,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:12:21,002 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr7REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 427 more)] === [2021-11-02 22:12:21,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:12:21,003 INFO L85 PathProgramCache]: Analyzing trace with hash 372320717, now seen corresponding path program 1 times [2021-11-02 22:12:21,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:12:21,004 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1895049079] [2021-11-02 22:12:21,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:12:21,004 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:12:21,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:12:21,005 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:12:21,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-02 22:12:21,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:12:21,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:12:21,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:12:21,316 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 22:12:21,371 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 22:12:21,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:12:21,514 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 22:12:21,514 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:12:21,514 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1895049079] [2021-11-02 22:12:21,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1895049079] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:12:21,515 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:12:21,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-02 22:12:21,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468275052] [2021-11-02 22:12:21,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:12:21,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:12:21,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:12:21,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:12:21,517 INFO L87 Difference]: Start difference. First operand 861 states and 959 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 22:12:25,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:12:25,747 INFO L93 Difference]: Finished difference Result 1106 states and 1188 transitions. [2021-11-02 22:12:25,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:12:25,749 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 22:12:25,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:12:25,757 INFO L225 Difference]: With dead ends: 1106 [2021-11-02 22:12:25,757 INFO L226 Difference]: Without dead ends: 1106 [2021-11-02 22:12:25,757 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 22:12:25,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2021-11-02 22:12:25,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 851. [2021-11-02 22:12:25,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 851 states, 489 states have (on average 1.8916155419222904) internal successors, (925), 840 states have internal predecessors, (925), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-02 22:12:25,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 851 states to 851 states and 946 transitions. [2021-11-02 22:12:25,790 INFO L78 Accepts]: Start accepts. Automaton has 851 states and 946 transitions. Word has length 12 [2021-11-02 22:12:25,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:12:25,790 INFO L470 AbstractCegarLoop]: Abstraction has 851 states and 946 transitions. [2021-11-02 22:12:25,791 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 22:12:25,791 INFO L276 IsEmpty]: Start isEmpty. Operand 851 states and 946 transitions. [2021-11-02 22:12:25,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-02 22:12:25,792 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:12:25,792 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:12:25,820 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-02 22:12:26,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:12:26,006 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr429ENSURES_VIOLATIONMEMORY_LEAK === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 427 more)] === [2021-11-02 22:12:26,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:12:26,007 INFO L85 PathProgramCache]: Analyzing trace with hash 2123497305, now seen corresponding path program 1 times [2021-11-02 22:12:26,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:12:26,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1511842103] [2021-11-02 22:12:26,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:12:26,008 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:12:26,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:12:26,010 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:12:26,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-02 22:12:26,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:12:26,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:12:26,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:12:26,310 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:12:26,311 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:12:26,312 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:12:26,378 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-02 22:12:26,378 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 22:12:26,484 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-02 22:12:26,484 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 22:12:26,518 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 22:12:26,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:12:26,602 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 22:12:26,603 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:12:26,603 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1511842103] [2021-11-02 22:12:26,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1511842103] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:12:26,604 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:12:26,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-02 22:12:26,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284783257] [2021-11-02 22:12:26,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:12:26,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:12:26,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:12:26,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:12:26,607 INFO L87 Difference]: Start difference. First operand 851 states and 946 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 22:12:28,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:12:28,670 INFO L93 Difference]: Finished difference Result 1057 states and 1172 transitions. [2021-11-02 22:12:28,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:12:28,671 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 22:12:28,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:12:28,679 INFO L225 Difference]: With dead ends: 1057 [2021-11-02 22:12:28,679 INFO L226 Difference]: Without dead ends: 1057 [2021-11-02 22:12:28,680 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 22:12:28,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1057 states. [2021-11-02 22:12:28,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1057 to 851. [2021-11-02 22:12:28,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 851 states, 489 states have (on average 1.8895705521472392) internal successors, (924), 840 states have internal predecessors, (924), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-02 22:12:28,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 851 states to 851 states and 945 transitions. [2021-11-02 22:12:28,714 INFO L78 Accepts]: Start accepts. Automaton has 851 states and 945 transitions. Word has length 14 [2021-11-02 22:12:28,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:12:28,715 INFO L470 AbstractCegarLoop]: Abstraction has 851 states and 945 transitions. [2021-11-02 22:12:28,715 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 22:12:28,716 INFO L276 IsEmpty]: Start isEmpty. Operand 851 states and 945 transitions. [2021-11-02 22:12:28,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-02 22:12:28,717 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:12:28,717 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 22:12:28,736 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-02 22:12:28,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:12:28,932 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr14REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 427 more)] === [2021-11-02 22:12:28,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:12:28,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1316346504, now seen corresponding path program 1 times [2021-11-02 22:12:28,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:12:28,933 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1103238659] [2021-11-02 22:12:28,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:12:28,934 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:12:28,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:12:28,935 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:12:28,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-02 22:12:29,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:12:29,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-02 22:12:29,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:12:29,246 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 22:12:29,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:12:29,299 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 22:12:29,299 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:12:29,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1103238659] [2021-11-02 22:12:29,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1103238659] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:12:29,300 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:12:29,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-02 22:12:29,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141682899] [2021-11-02 22:12:29,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:12:29,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:12:29,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:12:29,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:12:29,301 INFO L87 Difference]: Start difference. First operand 851 states and 945 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 22:12:29,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:12:29,326 INFO L93 Difference]: Finished difference Result 818 states and 911 transitions. [2021-11-02 22:12:29,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:12:29,327 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 22:12:29,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:12:29,332 INFO L225 Difference]: With dead ends: 818 [2021-11-02 22:12:29,332 INFO L226 Difference]: Without dead ends: 818 [2021-11-02 22:12:29,332 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 22:12:29,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2021-11-02 22:12:29,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 809. [2021-11-02 22:12:29,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 809 states, 471 states have (on average 1.870488322717622) internal successors, (881), 798 states have internal predecessors, (881), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-02 22:12:29,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 809 states to 809 states and 902 transitions. [2021-11-02 22:12:29,354 INFO L78 Accepts]: Start accepts. Automaton has 809 states and 902 transitions. Word has length 22 [2021-11-02 22:12:29,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:12:29,354 INFO L470 AbstractCegarLoop]: Abstraction has 809 states and 902 transitions. [2021-11-02 22:12:29,354 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 22:12:29,355 INFO L276 IsEmpty]: Start isEmpty. Operand 809 states and 902 transitions. [2021-11-02 22:12:29,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-02 22:12:29,355 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:12:29,356 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 22:12:29,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-02 22:12:29,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:12:29,569 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr38REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 427 more)] === [2021-11-02 22:12:29,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:12:29,569 INFO L85 PathProgramCache]: Analyzing trace with hash 2006361010, now seen corresponding path program 1 times [2021-11-02 22:12:29,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:12:29,570 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [882261892] [2021-11-02 22:12:29,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:12:29,571 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:12:29,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:12:29,572 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:12:29,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-02 22:12:29,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:12:29,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:12:29,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:12:29,936 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 22:12:29,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:12:30,019 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 22:12:30,019 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:12:30,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [882261892] [2021-11-02 22:12:30,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [882261892] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:12:30,020 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:12:30,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-02 22:12:30,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408894280] [2021-11-02 22:12:30,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:12:30,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:12:30,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:12:30,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:12:30,022 INFO L87 Difference]: Start difference. First operand 809 states and 902 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 22:12:30,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:12:30,136 INFO L93 Difference]: Finished difference Result 797 states and 883 transitions. [2021-11-02 22:12:30,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:12:30,137 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 22:12:30,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:12:30,143 INFO L225 Difference]: With dead ends: 797 [2021-11-02 22:12:30,143 INFO L226 Difference]: Without dead ends: 797 [2021-11-02 22:12:30,146 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 22:12:30,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2021-11-02 22:12:30,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 787. [2021-11-02 22:12:30,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 787 states, 463 states have (on average 1.8401727861771058) internal successors, (852), 776 states have internal predecessors, (852), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-02 22:12:30,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 787 states to 787 states and 873 transitions. [2021-11-02 22:12:30,181 INFO L78 Accepts]: Start accepts. Automaton has 787 states and 873 transitions. Word has length 24 [2021-11-02 22:12:30,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:12:30,182 INFO L470 AbstractCegarLoop]: Abstraction has 787 states and 873 transitions. [2021-11-02 22:12:30,182 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 22:12:30,182 INFO L276 IsEmpty]: Start isEmpty. Operand 787 states and 873 transitions. [2021-11-02 22:12:30,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-02 22:12:30,184 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:12:30,184 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 22:12:30,208 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-02 22:12:30,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:12:30,403 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr52REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 427 more)] === [2021-11-02 22:12:30,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:12:30,404 INFO L85 PathProgramCache]: Analyzing trace with hash -366881472, now seen corresponding path program 1 times [2021-11-02 22:12:30,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:12:30,405 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [215453368] [2021-11-02 22:12:30,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:12:30,405 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:12:30,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:12:30,407 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:12:30,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-02 22:12:30,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:12:30,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:12:30,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:12:30,792 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 22:12:30,943 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 22:12:30,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:12:31,137 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 22:12:31,138 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:12:31,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [215453368] [2021-11-02 22:12:31,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [215453368] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:12:31,138 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:12:31,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-02 22:12:31,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791323373] [2021-11-02 22:12:31,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:12:31,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:12:31,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:12:31,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:12:31,140 INFO L87 Difference]: Start difference. First operand 787 states and 873 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 22:12:33,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:12:33,009 INFO L93 Difference]: Finished difference Result 1008 states and 1115 transitions. [2021-11-02 22:12:33,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:12:33,011 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 22:12:33,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:12:33,019 INFO L225 Difference]: With dead ends: 1008 [2021-11-02 22:12:33,019 INFO L226 Difference]: Without dead ends: 1008 [2021-11-02 22:12:33,019 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 22:12:33,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2021-11-02 22:12:33,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 783. [2021-11-02 22:12:33,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 783 states, 463 states have (on average 1.8315334773218142) internal successors, (848), 772 states have internal predecessors, (848), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-02 22:12:33,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 783 states to 783 states and 869 transitions. [2021-11-02 22:12:33,045 INFO L78 Accepts]: Start accepts. Automaton has 783 states and 869 transitions. Word has length 38 [2021-11-02 22:12:33,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:12:33,045 INFO L470 AbstractCegarLoop]: Abstraction has 783 states and 869 transitions. [2021-11-02 22:12:33,046 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 22:12:33,046 INFO L276 IsEmpty]: Start isEmpty. Operand 783 states and 869 transitions. [2021-11-02 22:12:33,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-02 22:12:33,047 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:12:33,048 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 22:12:33,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-02 22:12:33,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:12:33,264 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr53REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 427 more)] === [2021-11-02 22:12:33,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:12:33,265 INFO L85 PathProgramCache]: Analyzing trace with hash -366881471, now seen corresponding path program 1 times [2021-11-02 22:12:33,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:12:33,265 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1570347980] [2021-11-02 22:12:33,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:12:33,266 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:12:33,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:12:33,268 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:12:33,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-02 22:12:33,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:12:33,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-02 22:12:33,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:12:33,661 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 22:12:34,045 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 22:12:34,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:12:34,717 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 22:12:34,718 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:12:34,718 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1570347980] [2021-11-02 22:12:34,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1570347980] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:12:34,718 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:12:34,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-02 22:12:34,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462065625] [2021-11-02 22:12:34,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:12:34,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:12:34,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:12:34,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:12:34,721 INFO L87 Difference]: Start difference. First operand 783 states and 869 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 22:12:41,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:12:41,204 INFO L93 Difference]: Finished difference Result 1046 states and 1119 transitions. [2021-11-02 22:12:41,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:12:41,206 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 22:12:41,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:12:41,213 INFO L225 Difference]: With dead ends: 1046 [2021-11-02 22:12:41,213 INFO L226 Difference]: Without dead ends: 1046 [2021-11-02 22:12:41,214 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 22:12:41,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2021-11-02 22:12:41,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 779. [2021-11-02 22:12:41,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 779 states, 463 states have (on average 1.8228941684665227) internal successors, (844), 768 states have internal predecessors, (844), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-02 22:12:41,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 779 states to 779 states and 865 transitions. [2021-11-02 22:12:41,237 INFO L78 Accepts]: Start accepts. Automaton has 779 states and 865 transitions. Word has length 38 [2021-11-02 22:12:41,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:12:41,238 INFO L470 AbstractCegarLoop]: Abstraction has 779 states and 865 transitions. [2021-11-02 22:12:41,238 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 22:12:41,238 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states and 865 transitions. [2021-11-02 22:12:41,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-02 22:12:41,240 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:12:41,240 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 22:12:41,259 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-11-02 22:12:41,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:12:41,460 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr117REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 427 more)] === [2021-11-02 22:12:41,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:12:41,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1799597351, now seen corresponding path program 1 times [2021-11-02 22:12:41,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:12:41,461 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1954673404] [2021-11-02 22:12:41,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:12:41,461 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:12:41,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:12:41,463 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:12:41,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-02 22:12:41,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:12:41,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:12:41,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:12:42,120 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 22:12:42,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:12:42,330 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 22:12:42,330 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:12:42,330 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1954673404] [2021-11-02 22:12:42,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1954673404] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:12:42,331 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:12:42,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-02 22:12:42,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885473191] [2021-11-02 22:12:42,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:12:42,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:12:42,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:12:42,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:12:42,334 INFO L87 Difference]: Start difference. First operand 779 states and 865 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 22:12:42,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:12:42,412 INFO L93 Difference]: Finished difference Result 782 states and 864 transitions. [2021-11-02 22:12:42,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:12:42,413 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 22:12:42,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:12:42,419 INFO L225 Difference]: With dead ends: 782 [2021-11-02 22:12:42,419 INFO L226 Difference]: Without dead ends: 782 [2021-11-02 22:12:42,420 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 22:12:42,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2021-11-02 22:12:42,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 773. [2021-11-02 22:12:42,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 773 states, 457 states have (on average 1.824945295404814) internal successors, (834), 762 states have internal predecessors, (834), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-02 22:12:42,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 773 states to 773 states and 855 transitions. [2021-11-02 22:12:42,446 INFO L78 Accepts]: Start accepts. Automaton has 773 states and 855 transitions. Word has length 53 [2021-11-02 22:12:42,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:12:42,450 INFO L470 AbstractCegarLoop]: Abstraction has 773 states and 855 transitions. [2021-11-02 22:12:42,450 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 22:12:42,450 INFO L276 IsEmpty]: Start isEmpty. Operand 773 states and 855 transitions. [2021-11-02 22:12:42,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-02 22:12:42,455 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:12:42,456 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 22:12:42,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-02 22:12:42,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:12:42,673 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr117REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 427 more)] === [2021-11-02 22:12:42,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:12:42,674 INFO L85 PathProgramCache]: Analyzing trace with hash -387318643, now seen corresponding path program 1 times [2021-11-02 22:12:42,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:12:42,674 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1351261777] [2021-11-02 22:12:42,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:12:42,675 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:12:42,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:12:42,676 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:12:42,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-02 22:12:43,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:12:43,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:12:43,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:12:43,704 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 22:12:43,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:12:44,303 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 22:12:44,304 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:12:44,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1351261777] [2021-11-02 22:12:44,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1351261777] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:12:44,304 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:12:44,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-02 22:12:44,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392400481] [2021-11-02 22:12:44,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:12:44,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:12:44,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:12:44,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:12:44,308 INFO L87 Difference]: Start difference. First operand 773 states and 855 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 22:12:44,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:12:44,480 INFO L93 Difference]: Finished difference Result 962 states and 1057 transitions. [2021-11-02 22:12:44,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:12:44,481 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 22:12:44,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:12:44,490 INFO L225 Difference]: With dead ends: 962 [2021-11-02 22:12:44,490 INFO L226 Difference]: Without dead ends: 962 [2021-11-02 22:12:44,490 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 22:12:44,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 962 states. [2021-11-02 22:12:44,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 962 to 907. [2021-11-02 22:12:44,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 907 states, 590 states have (on average 1.7474576271186442) internal successors, (1031), 895 states have internal predecessors, (1031), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-02 22:12:44,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 907 states to 907 states and 1054 transitions. [2021-11-02 22:12:44,521 INFO L78 Accepts]: Start accepts. Automaton has 907 states and 1054 transitions. Word has length 61 [2021-11-02 22:12:44,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:12:44,522 INFO L470 AbstractCegarLoop]: Abstraction has 907 states and 1054 transitions. [2021-11-02 22:12:44,522 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 22:12:44,522 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states and 1054 transitions. [2021-11-02 22:12:44,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-02 22:12:44,531 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:12:44,531 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 22:12:44,552 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-02 22:12:44,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:12:44,744 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr71REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 427 more)] === [2021-11-02 22:12:44,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:12:44,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1860046283, now seen corresponding path program 1 times [2021-11-02 22:12:44,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:12:44,745 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [79622258] [2021-11-02 22:12:44,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:12:44,746 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:12:44,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:12:44,747 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:12:44,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-02 22:12:45,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:12:45,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-02 22:12:45,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:12:45,467 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 22:12:45,482 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 22:12:46,473 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-02 22:12:46,474 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 29 treesize of output 31 [2021-11-02 22:12:46,482 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-02 22:12:46,483 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 28 treesize of output 24 [2021-11-02 22:12:46,525 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 22:12:46,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:12:52,004 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 22:12:52,005 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:12:52,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [79622258] [2021-11-02 22:12:52,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [79622258] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:12:52,005 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:12:52,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-02 22:12:52,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160563894] [2021-11-02 22:12:52,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:12:52,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:12:52,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:12:52,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-02 22:12:52,008 INFO L87 Difference]: Start difference. First operand 907 states and 1054 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 22:13:05,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:13:05,356 INFO L93 Difference]: Finished difference Result 1169 states and 1401 transitions. [2021-11-02 22:13:05,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 22:13:05,359 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 22:13:05,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:13:05,365 INFO L225 Difference]: With dead ends: 1169 [2021-11-02 22:13:05,365 INFO L226 Difference]: Without dead ends: 1169 [2021-11-02 22:13:05,365 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 123 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 22:13:05,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1169 states. [2021-11-02 22:13:05,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1169 to 869. [2021-11-02 22:13:05,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 869 states, 590 states have (on average 1.6830508474576271) internal successors, (993), 857 states have internal predecessors, (993), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-02 22:13:05,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 1016 transitions. [2021-11-02 22:13:05,391 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 1016 transitions. Word has length 64 [2021-11-02 22:13:05,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:13:05,391 INFO L470 AbstractCegarLoop]: Abstraction has 869 states and 1016 transitions. [2021-11-02 22:13:05,392 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 22:13:05,392 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 1016 transitions. [2021-11-02 22:13:05,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-02 22:13:05,393 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:13:05,393 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 22:13:05,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-02 22:13:05,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:13:05,608 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr76REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 427 more)] === [2021-11-02 22:13:05,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:13:05,609 INFO L85 PathProgramCache]: Analyzing trace with hash -946127520, now seen corresponding path program 1 times [2021-11-02 22:13:05,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:13:05,610 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [860661274] [2021-11-02 22:13:05,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:13:05,610 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:13:05,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:13:05,611 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:13:05,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-02 22:13:06,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:13:06,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-02 22:13:06,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:13:06,445 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 22:13:06,464 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 22:13:06,515 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 22:13:06,535 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 22:13:06,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:13:06,752 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 22:13:06,752 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:13:06,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [860661274] [2021-11-02 22:13:06,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [860661274] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:13:06,753 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:13:06,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-02 22:13:06,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082016562] [2021-11-02 22:13:06,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:13:06,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:13:06,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:13:06,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:13:06,755 INFO L87 Difference]: Start difference. First operand 869 states and 1016 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 22:13:09,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:13:09,742 INFO L93 Difference]: Finished difference Result 868 states and 1015 transitions. [2021-11-02 22:13:09,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 22:13:09,743 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 22:13:09,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:13:09,748 INFO L225 Difference]: With dead ends: 868 [2021-11-02 22:13:09,748 INFO L226 Difference]: Without dead ends: 868 [2021-11-02 22:13:09,748 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 22:13:09,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2021-11-02 22:13:09,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 868. [2021-11-02 22:13:09,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 868 states, 590 states have (on average 1.6813559322033897) internal successors, (992), 856 states have internal predecessors, (992), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-02 22:13:09,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 868 states to 868 states and 1015 transitions. [2021-11-02 22:13:09,772 INFO L78 Accepts]: Start accepts. Automaton has 868 states and 1015 transitions. Word has length 69 [2021-11-02 22:13:09,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:13:09,773 INFO L470 AbstractCegarLoop]: Abstraction has 868 states and 1015 transitions. [2021-11-02 22:13:09,773 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 22:13:09,773 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states and 1015 transitions. [2021-11-02 22:13:09,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-02 22:13:09,774 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:13:09,775 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 22:13:09,818 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-02 22:13:09,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:13:09,993 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr77REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 427 more)] === [2021-11-02 22:13:09,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:13:09,994 INFO L85 PathProgramCache]: Analyzing trace with hash -946127519, now seen corresponding path program 1 times [2021-11-02 22:13:09,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:13:09,995 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1624061416] [2021-11-02 22:13:09,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:13:09,995 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:13:09,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:13:09,996 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:13:10,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-02 22:13:10,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:13:10,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-02 22:13:10,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:13:10,825 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 22:13:10,853 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 22:13:10,874 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 22:13:10,949 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 22:13:10,952 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 22:13:10,977 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 22:13:10,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:13:11,385 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 22:13:11,385 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:13:11,385 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1624061416] [2021-11-02 22:13:11,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1624061416] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:13:11,385 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:13:11,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-02 22:13:11,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298835077] [2021-11-02 22:13:11,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 22:13:11,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:13:11,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 22:13:11,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-02 22:13:11,387 INFO L87 Difference]: Start difference. First operand 868 states and 1015 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 22:13:19,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:13:19,788 INFO L93 Difference]: Finished difference Result 867 states and 1014 transitions. [2021-11-02 22:13:19,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 22:13:19,789 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 22:13:19,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:13:19,793 INFO L225 Difference]: With dead ends: 867 [2021-11-02 22:13:19,793 INFO L226 Difference]: Without dead ends: 867 [2021-11-02 22:13:19,794 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 22:13:19,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 867 states. [2021-11-02 22:13:19,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 867 to 867. [2021-11-02 22:13:19,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 867 states, 589 states have (on average 1.6825127334465195) internal successors, (991), 855 states have internal predecessors, (991), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-02 22:13:19,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 1014 transitions. [2021-11-02 22:13:19,815 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 1014 transitions. Word has length 69 [2021-11-02 22:13:19,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:13:19,816 INFO L470 AbstractCegarLoop]: Abstraction has 867 states and 1014 transitions. [2021-11-02 22:13:19,816 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 22:13:19,816 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 1014 transitions. [2021-11-02 22:13:19,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-02 22:13:19,818 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:13:19,818 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 22:13:19,852 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-11-02 22:13:20,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:13:20,037 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 427 more)] === [2021-11-02 22:13:20,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:13:20,037 INFO L85 PathProgramCache]: Analyzing trace with hash -582919641, now seen corresponding path program 1 times [2021-11-02 22:13:20,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:13:20,038 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1415558029] [2021-11-02 22:13:20,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:13:20,039 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:13:20,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:13:20,040 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:13:20,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-02 22:13:20,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:13:20,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:13:20,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:13:21,030 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 22:13:21,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:13:21,289 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 22:13:21,290 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:13:21,290 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1415558029] [2021-11-02 22:13:21,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1415558029] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:13:21,290 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:13:21,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-02 22:13:21,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107969081] [2021-11-02 22:13:21,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:13:21,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:13:21,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:13:21,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:13:21,292 INFO L87 Difference]: Start difference. First operand 867 states and 1014 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 22:13:21,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:13:21,468 INFO L93 Difference]: Finished difference Result 877 states and 1027 transitions. [2021-11-02 22:13:21,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 22:13:21,470 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 22:13:21,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:13:21,482 INFO L225 Difference]: With dead ends: 877 [2021-11-02 22:13:21,482 INFO L226 Difference]: Without dead ends: 877 [2021-11-02 22:13:21,485 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 22:13:21,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 877 states. [2021-11-02 22:13:21,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 877 to 877. [2021-11-02 22:13:21,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 877 states, 597 states have (on average 1.6800670016750419) internal successors, (1003), 864 states have internal predecessors, (1003), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 7 states have call predecessors, (12), 11 states have call successors, (12) [2021-11-02 22:13:21,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1027 transitions. [2021-11-02 22:13:21,517 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1027 transitions. Word has length 77 [2021-11-02 22:13:21,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:13:21,517 INFO L470 AbstractCegarLoop]: Abstraction has 877 states and 1027 transitions. [2021-11-02 22:13:21,518 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 22:13:21,518 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1027 transitions. [2021-11-02 22:13:21,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-02 22:13:21,519 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:13:21,519 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 22:13:21,543 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-02 22:13:21,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:13:21,736 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 427 more)] === [2021-11-02 22:13:21,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:13:21,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1748666471, now seen corresponding path program 1 times [2021-11-02 22:13:21,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:13:21,738 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1993572243] [2021-11-02 22:13:21,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:13:21,738 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:13:21,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:13:21,739 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:13:21,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-02 22:13:22,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:13:22,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-02 22:13:22,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:13:22,894 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 22:13:22,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:13:23,272 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 22:13:23,273 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:13:23,274 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1993572243] [2021-11-02 22:13:23,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1993572243] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 22:13:23,274 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:13:23,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-11-02 22:13:23,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651843197] [2021-11-02 22:13:23,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 22:13:23,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:13:23,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 22:13:23,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-02 22:13:23,276 INFO L87 Difference]: Start difference. First operand 877 states and 1027 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 22:13:23,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:13:23,748 INFO L93 Difference]: Finished difference Result 891 states and 1045 transitions. [2021-11-02 22:13:23,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-02 22:13:23,749 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 22:13:23,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:13:23,755 INFO L225 Difference]: With dead ends: 891 [2021-11-02 22:13:23,755 INFO L226 Difference]: Without dead ends: 887 [2021-11-02 22:13:23,756 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=193, Unknown=0, NotChecked=0, Total=306 [2021-11-02 22:13:23,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2021-11-02 22:13:23,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 883. [2021-11-02 22:13:23,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 603 states have (on average 1.6766169154228856) internal successors, (1011), 870 states have internal predecessors, (1011), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 7 states have call predecessors, (12), 11 states have call successors, (12) [2021-11-02 22:13:23,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1035 transitions. [2021-11-02 22:13:23,778 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1035 transitions. Word has length 79 [2021-11-02 22:13:23,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:13:23,779 INFO L470 AbstractCegarLoop]: Abstraction has 883 states and 1035 transitions. [2021-11-02 22:13:23,779 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 22:13:23,780 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1035 transitions. [2021-11-02 22:13:23,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-02 22:13:23,781 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:13:23,781 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 22:13:23,800 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-11-02 22:13:23,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:13:23,996 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 427 more)] === [2021-11-02 22:13:23,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:13:23,996 INFO L85 PathProgramCache]: Analyzing trace with hash 198784231, now seen corresponding path program 2 times [2021-11-02 22:13:23,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:13:23,997 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1967823634] [2021-11-02 22:13:23,997 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:13:23,998 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:13:23,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:13:23,999 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:13:24,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-02 22:13:25,218 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:13:25,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:13:25,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-02 22:13:25,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:13:25,591 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 22:13:25,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:13:26,324 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 22:13:26,325 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:13:26,325 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1967823634] [2021-11-02 22:13:26,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1967823634] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 22:13:26,326 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:13:26,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-11-02 22:13:26,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242791170] [2021-11-02 22:13:26,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-02 22:13:26,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:13:26,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-02 22:13:26,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-11-02 22:13:26,328 INFO L87 Difference]: Start difference. First operand 883 states and 1035 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 22:13:28,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:13:28,451 INFO L93 Difference]: Finished difference Result 911 states and 1073 transitions. [2021-11-02 22:13:28,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-02 22:13:28,453 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 22:13:28,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:13:28,459 INFO L225 Difference]: With dead ends: 911 [2021-11-02 22:13:28,459 INFO L226 Difference]: Without dead ends: 907 [2021-11-02 22:13:28,460 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=457, Invalid=949, Unknown=0, NotChecked=0, Total=1406 [2021-11-02 22:13:28,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 907 states. [2021-11-02 22:13:28,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 907 to 895. [2021-11-02 22:13:28,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 895 states, 615 states have (on average 1.6699186991869919) internal successors, (1027), 882 states have internal predecessors, (1027), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 7 states have call predecessors, (12), 11 states have call successors, (12) [2021-11-02 22:13:28,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 1051 transitions. [2021-11-02 22:13:28,483 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 1051 transitions. Word has length 83 [2021-11-02 22:13:28,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:13:28,484 INFO L470 AbstractCegarLoop]: Abstraction has 895 states and 1051 transitions. [2021-11-02 22:13:28,484 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 22:13:28,485 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 1051 transitions. [2021-11-02 22:13:28,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-02 22:13:28,486 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:13:28,486 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 22:13:28,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-02 22:13:28,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:13:28,700 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 427 more)] === [2021-11-02 22:13:28,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:13:28,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1907871207, now seen corresponding path program 3 times [2021-11-02 22:13:28,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:13:28,702 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [433134674] [2021-11-02 22:13:28,702 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:13:28,702 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:13:28,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:13:28,704 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:13:28,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-02 22:13:30,589 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-02 22:13:30,589 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:13:30,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-02 22:13:30,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:13:31,344 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 22:13:31,344 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:13:33,245 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 22:13:33,246 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:13:33,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [433134674] [2021-11-02 22:13:33,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [433134674] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 22:13:33,247 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:13:33,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2021-11-02 22:13:33,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829050747] [2021-11-02 22:13:33,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-02 22:13:33,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:13:33,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-02 22:13:33,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2021-11-02 22:13:33,250 INFO L87 Difference]: Start difference. First operand 895 states and 1051 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 22:13:42,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:13:42,115 INFO L93 Difference]: Finished difference Result 951 states and 1129 transitions. [2021-11-02 22:13:42,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-11-02 22:13:42,116 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 22:13:42,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:13:42,123 INFO L225 Difference]: With dead ends: 951 [2021-11-02 22:13:42,123 INFO L226 Difference]: Without dead ends: 947 [2021-11-02 22:13:42,126 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 598 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=1817, Invalid=4189, Unknown=0, NotChecked=0, Total=6006 [2021-11-02 22:13:42,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 947 states. [2021-11-02 22:13:42,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 947 to 919. [2021-11-02 22:13:42,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 919 states, 639 states have (on average 1.6572769953051643) internal successors, (1059), 906 states have internal predecessors, (1059), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 7 states have call predecessors, (12), 11 states have call successors, (12) [2021-11-02 22:13:42,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 1083 transitions. [2021-11-02 22:13:42,152 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 1083 transitions. Word has length 91 [2021-11-02 22:13:42,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:13:42,152 INFO L470 AbstractCegarLoop]: Abstraction has 919 states and 1083 transitions. [2021-11-02 22:13:42,153 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 22:13:42,153 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 1083 transitions. [2021-11-02 22:13:42,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-02 22:13:42,154 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:13:42,155 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 22:13:42,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-02 22:13:42,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:13:42,368 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 427 more)] === [2021-11-02 22:13:42,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:13:42,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1870266343, now seen corresponding path program 4 times [2021-11-02 22:13:42,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:13:42,369 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [849895205] [2021-11-02 22:13:42,370 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 22:13:42,370 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:13:42,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:13:42,370 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:13:42,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-02 22:13:43,510 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 22:13:43,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:13:43,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-02 22:13:43,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:13:45,031 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 22:13:45,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:13:50,932 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 22:13:50,932 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:13:50,933 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [849895205] [2021-11-02 22:13:50,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [849895205] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 22:13:50,933 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:13:50,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 66 [2021-11-02 22:13:50,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758970003] [2021-11-02 22:13:50,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-02 22:13:50,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:13:50,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-02 22:13:50,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1000, Invalid=3290, Unknown=0, NotChecked=0, Total=4290 [2021-11-02 22:13:50,937 INFO L87 Difference]: Start difference. First operand 919 states and 1083 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 22:14:09,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:14:09,400 INFO L93 Difference]: Finished difference Result 1013 states and 1205 transitions. [2021-11-02 22:14:09,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2021-11-02 22:14:09,401 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 22:14:09,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:14:09,408 INFO L225 Difference]: With dead ends: 1013 [2021-11-02 22:14:09,408 INFO L226 Difference]: Without dead ends: 1009 [2021-11-02 22:14:09,416 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2375 ImplicationChecksByTransitivity, 14.5s TimeCoverageRelationStatistics Valid=4552, Invalid=14908, Unknown=0, NotChecked=0, Total=19460 [2021-11-02 22:14:09,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2021-11-02 22:14:09,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 949. [2021-11-02 22:14:09,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 949 states, 669 states have (on average 1.6517189835575485) internal successors, (1105), 936 states have internal predecessors, (1105), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 7 states have call predecessors, (12), 11 states have call successors, (12) [2021-11-02 22:14:09,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1129 transitions. [2021-11-02 22:14:09,442 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1129 transitions. Word has length 107 [2021-11-02 22:14:09,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:14:09,443 INFO L470 AbstractCegarLoop]: Abstraction has 949 states and 1129 transitions. [2021-11-02 22:14:09,443 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 22:14:09,443 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1129 transitions. [2021-11-02 22:14:09,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-02 22:14:09,445 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:14:09,445 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 22:14:09,472 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-02 22:14:09,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:14:09,666 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 427 more)] === [2021-11-02 22:14:09,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:14:09,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1845795929, now seen corresponding path program 5 times [2021-11-02 22:14:09,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:14:09,667 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [82908051] [2021-11-02 22:14:09,667 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:14:09,667 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:14:09,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:14:09,668 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:14:09,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac325084-9de6-46c9-8d26-a7f9d1288356/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-02 22:14:11,769 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2021-11-02 22:14:11,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:14:11,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-02 22:14:11,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:14:11,837 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 22:14:12,204 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-02 22:14:12,204 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 22:14:12,261 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 22:14:12,478 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