./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test6_3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test6_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF --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 8767e0bad2c10bf5e26ce466e806335c672949ef870a6e01ac396a8c6ce00fcd --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 06:42:07,222 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 06:42:07,225 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 06:42:07,262 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 06:42:07,262 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 06:42:07,264 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 06:42:07,266 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 06:42:07,268 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 06:42:07,271 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 06:42:07,273 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 06:42:07,274 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 06:42:07,276 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 06:42:07,276 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 06:42:07,278 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 06:42:07,279 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 06:42:07,281 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 06:42:07,282 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 06:42:07,284 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 06:42:07,287 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 06:42:07,290 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 06:42:07,293 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 06:42:07,295 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 06:42:07,296 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 06:42:07,297 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 06:42:07,302 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 06:42:07,302 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 06:42:07,303 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 06:42:07,304 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 06:42:07,304 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 06:42:07,306 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 06:42:07,306 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 06:42:07,307 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 06:42:07,308 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 06:42:07,309 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 06:42:07,310 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 06:42:07,311 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 06:42:07,312 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 06:42:07,312 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 06:42:07,313 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 06:42:07,314 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 06:42:07,315 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 06:42:07,316 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-20 06:42:07,341 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 06:42:07,342 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 06:42:07,342 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 06:42:07,343 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 06:42:07,343 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 06:42:07,344 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 06:42:07,344 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 06:42:07,345 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 06:42:07,345 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 06:42:07,345 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 06:42:07,346 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 06:42:07,346 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 06:42:07,346 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 06:42:07,346 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 06:42:07,347 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 06:42:07,347 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-20 06:42:07,347 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-20 06:42:07,347 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-20 06:42:07,347 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 06:42:07,348 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 06:42:07,348 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 06:42:07,348 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 06:42:07,348 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 06:42:07,349 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 06:42:07,349 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 06:42:07,349 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:42:07,349 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 06:42:07,350 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 06:42:07,350 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 06:42:07,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 06:42:07,350 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 06:42:07,350 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_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8767e0bad2c10bf5e26ce466e806335c672949ef870a6e01ac396a8c6ce00fcd [2021-11-20 06:42:07,590 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 06:42:07,609 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 06:42:07,612 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 06:42:07,613 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 06:42:07,614 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 06:42:07,615 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/ldv-memsafety/memleaks_test6_3.i [2021-11-20 06:42:07,678 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/data/c74dd0c0f/0ba69011e7124e719afd075e91ba4df5/FLAG44cb9f3cd [2021-11-20 06:42:08,277 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 06:42:08,277 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/sv-benchmarks/c/ldv-memsafety/memleaks_test6_3.i [2021-11-20 06:42:08,298 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/data/c74dd0c0f/0ba69011e7124e719afd075e91ba4df5/FLAG44cb9f3cd [2021-11-20 06:42:08,544 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/data/c74dd0c0f/0ba69011e7124e719afd075e91ba4df5 [2021-11-20 06:42:08,547 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 06:42:08,548 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 06:42:08,552 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 06:42:08,552 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 06:42:08,555 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 06:42:08,555 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:42:08" (1/1) ... [2021-11-20 06:42:08,556 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39a6e6f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:42:08, skipping insertion in model container [2021-11-20 06:42:08,556 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:42:08" (1/1) ... [2021-11-20 06:42:08,564 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 06:42:08,625 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:42:09,074 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:42:09,099 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) [2021-11-20 06:42:09,100 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7e5df258 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:42:09, skipping insertion in model container [2021-11-20 06:42:09,100 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 06:42:09,101 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-20 06:42:09,104 INFO L158 Benchmark]: Toolchain (without parser) took 553.70ms. Allocated memory is still 100.7MB. Free memory was 58.0MB in the beginning and 71.5MB in the end (delta: -13.6MB). Peak memory consumption was 4.5MB. Max. memory is 16.1GB. [2021-11-20 06:42:09,104 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 100.7MB. Free memory is still 75.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:42:09,106 INFO L158 Benchmark]: CACSL2BoogieTranslator took 548.70ms. Allocated memory is still 100.7MB. Free memory was 57.8MB in the beginning and 71.5MB in the end (delta: -13.8MB). Peak memory consumption was 4.5MB. Max. memory is 16.1GB. [2021-11-20 06:42:09,108 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 100.7MB. Free memory is still 75.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 548.70ms. Allocated memory is still 100.7MB. Free memory was 57.8MB in the beginning and 71.5MB in the end (delta: -13.8MB). Peak memory consumption was 4.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- 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_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test6_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF --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 8767e0bad2c10bf5e26ce466e806335c672949ef870a6e01ac396a8c6ce00fcd --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 06:42:11,277 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 06:42:11,280 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 06:42:11,332 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 06:42:11,333 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 06:42:11,337 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 06:42:11,340 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 06:42:11,347 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 06:42:11,350 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 06:42:11,355 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 06:42:11,356 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 06:42:11,358 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 06:42:11,359 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 06:42:11,361 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 06:42:11,363 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 06:42:11,365 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 06:42:11,367 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 06:42:11,368 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 06:42:11,372 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 06:42:11,379 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 06:42:11,381 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 06:42:11,383 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 06:42:11,385 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 06:42:11,387 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 06:42:11,395 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 06:42:11,396 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 06:42:11,396 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 06:42:11,398 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 06:42:11,399 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 06:42:11,400 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 06:42:11,400 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 06:42:11,401 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 06:42:11,403 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 06:42:11,404 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 06:42:11,405 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 06:42:11,405 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 06:42:11,406 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 06:42:11,407 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 06:42:11,407 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 06:42:11,409 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 06:42:11,409 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 06:42:11,410 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-20 06:42:11,450 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 06:42:11,450 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 06:42:11,451 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 06:42:11,451 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 06:42:11,452 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 06:42:11,452 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 06:42:11,453 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 06:42:11,453 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 06:42:11,454 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 06:42:11,454 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 06:42:11,455 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 06:42:11,455 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 06:42:11,456 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 06:42:11,456 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 06:42:11,456 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 06:42:11,456 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-20 06:42:11,457 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-20 06:42:11,457 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-20 06:42:11,457 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 06:42:11,457 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 06:42:11,458 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-20 06:42:11,458 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-20 06:42:11,458 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 06:42:11,458 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 06:42:11,459 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 06:42:11,459 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 06:42:11,459 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 06:42:11,460 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:42:11,460 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 06:42:11,460 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 06:42:11,460 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-20 06:42:11,461 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-20 06:42:11,461 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 06:42:11,461 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 06:42:11,461 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_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8767e0bad2c10bf5e26ce466e806335c672949ef870a6e01ac396a8c6ce00fcd [2021-11-20 06:42:11,875 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 06:42:11,903 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 06:42:11,907 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 06:42:11,908 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 06:42:11,909 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 06:42:11,910 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/ldv-memsafety/memleaks_test6_3.i [2021-11-20 06:42:11,990 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/data/7fb43947c/b1b2188ed4dc465e97c5c5cd4d188316/FLAG9db87df1f [2021-11-20 06:42:12,622 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 06:42:12,624 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/sv-benchmarks/c/ldv-memsafety/memleaks_test6_3.i [2021-11-20 06:42:12,648 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/data/7fb43947c/b1b2188ed4dc465e97c5c5cd4d188316/FLAG9db87df1f [2021-11-20 06:42:12,935 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/data/7fb43947c/b1b2188ed4dc465e97c5c5cd4d188316 [2021-11-20 06:42:12,939 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 06:42:12,941 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 06:42:12,944 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 06:42:12,945 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 06:42:12,948 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 06:42:12,949 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:42:12" (1/1) ... [2021-11-20 06:42:12,951 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12df5cc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:42:12, skipping insertion in model container [2021-11-20 06:42:12,951 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:42:12" (1/1) ... [2021-11-20 06:42:12,958 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 06:42:13,029 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:42:13,546 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:42:13,569 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-20 06:42:13,584 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:42:13,665 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:42:13,683 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 06:42:13,741 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:42:13,784 INFO L208 MainTranslator]: Completed translation [2021-11-20 06:42:13,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:42:13 WrapperNode [2021-11-20 06:42:13,785 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 06:42:13,786 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 06:42:13,786 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 06:42:13,786 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 06:42:13,793 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:42:13" (1/1) ... [2021-11-20 06:42:13,816 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:42:13" (1/1) ... [2021-11-20 06:42:13,842 INFO L137 Inliner]: procedures = 169, calls = 77, calls flagged for inlining = 25, calls inlined = 7, statements flattened = 55 [2021-11-20 06:42:13,843 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 06:42:13,844 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 06:42:13,845 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 06:42:13,845 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 06:42:13,853 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:42:13" (1/1) ... [2021-11-20 06:42:13,853 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:42:13" (1/1) ... [2021-11-20 06:42:13,870 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:42:13" (1/1) ... [2021-11-20 06:42:13,874 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:42:13" (1/1) ... [2021-11-20 06:42:13,881 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:42:13" (1/1) ... [2021-11-20 06:42:13,897 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:42:13" (1/1) ... [2021-11-20 06:42:13,899 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:42:13" (1/1) ... [2021-11-20 06:42:13,910 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 06:42:13,911 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 06:42:13,911 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 06:42:13,912 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 06:42:13,912 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:42:13" (1/1) ... [2021-11-20 06:42:13,919 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:42:13,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:13,943 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:13,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 06:42:13,989 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-20 06:42:13,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-20 06:42:13,990 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 06:42:13,990 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 06:42:13,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 06:42:13,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 06:42:13,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-20 06:42:13,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 06:42:13,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 06:42:14,129 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 06:42:14,131 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 06:42:14,303 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 06:42:14,309 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 06:42:14,309 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-20 06:42:14,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:42:14 BoogieIcfgContainer [2021-11-20 06:42:14,311 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 06:42:14,313 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 06:42:14,313 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 06:42:14,316 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 06:42:14,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:42:12" (1/3) ... [2021-11-20 06:42:14,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f79e3a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:42:14, skipping insertion in model container [2021-11-20 06:42:14,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:42:13" (2/3) ... [2021-11-20 06:42:14,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f79e3a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:42:14, skipping insertion in model container [2021-11-20 06:42:14,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:42:14" (3/3) ... [2021-11-20 06:42:14,319 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test6_3.i [2021-11-20 06:42:14,324 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 06:42:14,325 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-11-20 06:42:14,369 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 06:42:14,376 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 [2021-11-20 06:42:14,376 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-11-20 06:42:14,391 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 23 states have (on average 1.565217391304348) internal successors, (36), 31 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 06:42:14,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-20 06:42:14,398 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:42:14,399 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:42:14,399 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 5 more)] === [2021-11-20 06:42:14,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:42:14,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1378433930, now seen corresponding path program 1 times [2021-11-20 06:42:14,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:42:14,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [771755518] [2021-11-20 06:42:14,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:42:14,418 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:42:14,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:42:14,422 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:42:14,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-20 06:42:14,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:14,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 06:42:14,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:42:14,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:42:14,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:42:14,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:42:14,742 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:42:14,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [771755518] [2021-11-20 06:42:14,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [771755518] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:42:14,743 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:42:14,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-20 06:42:14,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20332145] [2021-11-20 06:42:14,746 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:42:14,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:42:14,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:42:14,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:42:14,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:42:14,778 INFO L87 Difference]: Start difference. First operand has 34 states, 23 states have (on average 1.565217391304348) internal successors, (36), 31 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 06:42:14,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:42:14,848 INFO L93 Difference]: Finished difference Result 62 states and 69 transitions. [2021-11-20 06:42:14,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:42:14,851 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-11-20 06:42:14,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:42:14,858 INFO L225 Difference]: With dead ends: 62 [2021-11-20 06:42:14,859 INFO L226 Difference]: Without dead ends: 58 [2021-11-20 06:42:14,860 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:42:14,864 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 28 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:42:14,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 152 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:42:14,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-11-20 06:42:14,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 36. [2021-11-20 06:42:14,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 25 states have (on average 1.48) internal successors, (37), 32 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 06:42:14,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2021-11-20 06:42:14,900 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 12 [2021-11-20 06:42:14,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:42:14,900 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2021-11-20 06:42:14,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 06:42:14,901 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2021-11-20 06:42:14,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-20 06:42:14,901 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:42:14,902 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:42:14,912 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:15,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:42:15,104 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 5 more)] === [2021-11-20 06:42:15,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:42:15,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1378399289, now seen corresponding path program 1 times [2021-11-20 06:42:15,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:42:15,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [267484380] [2021-11-20 06:42:15,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:42:15,107 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:42:15,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:42:15,112 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:42:15,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-20 06:42:15,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:15,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 06:42:15,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:42:15,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:42:15,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:42:15,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:42:15,273 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:42:15,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [267484380] [2021-11-20 06:42:15,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [267484380] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:42:15,274 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:42:15,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-20 06:42:15,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687436582] [2021-11-20 06:42:15,274 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:42:15,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:42:15,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:42:15,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:42:15,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:42:15,277 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 06:42:15,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:42:15,304 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2021-11-20 06:42:15,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:42:15,306 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-11-20 06:42:15,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:42:15,307 INFO L225 Difference]: With dead ends: 35 [2021-11-20 06:42:15,324 INFO L226 Difference]: Without dead ends: 35 [2021-11-20 06:42:15,325 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:42:15,326 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 23 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:42:15,327 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 92 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:42:15,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-11-20 06:42:15,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-11-20 06:42:15,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 25 states have (on average 1.44) internal successors, (36), 31 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 06:42:15,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2021-11-20 06:42:15,333 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 12 [2021-11-20 06:42:15,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:42:15,334 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2021-11-20 06:42:15,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 06:42:15,334 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2021-11-20 06:42:15,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-20 06:42:15,335 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:42:15,335 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:42:15,350 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:15,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:42:15,547 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 5 more)] === [2021-11-20 06:42:15,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:42:15,547 INFO L85 PathProgramCache]: Analyzing trace with hash 364376405, now seen corresponding path program 1 times [2021-11-20 06:42:15,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:42:15,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [459575925] [2021-11-20 06:42:15,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:42:15,548 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:42:15,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:42:15,549 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:42:15,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-20 06:42:15,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:15,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 06:42:15,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:42:15,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:42:15,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:42:16,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:42:16,004 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:42:16,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [459575925] [2021-11-20 06:42:16,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [459575925] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:42:16,004 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:42:16,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-11-20 06:42:16,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348832637] [2021-11-20 06:42:16,005 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:42:16,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:42:16,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:42:16,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:42:16,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:42:16,006 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 06:42:16,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:42:16,126 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2021-11-20 06:42:16,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:42:16,132 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 12 [2021-11-20 06:42:16,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:42:16,134 INFO L225 Difference]: With dead ends: 43 [2021-11-20 06:42:16,135 INFO L226 Difference]: Without dead ends: 43 [2021-11-20 06:42:16,136 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:42:16,137 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 56 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:42:16,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 49 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:42:16,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-11-20 06:42:16,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2021-11-20 06:42:16,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 29 states have (on average 1.4482758620689655) internal successors, (42), 35 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 06:42:16,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2021-11-20 06:42:16,155 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 12 [2021-11-20 06:42:16,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:42:16,156 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2021-11-20 06:42:16,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 06:42:16,156 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2021-11-20 06:42:16,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-20 06:42:16,158 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:42:16,158 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:42:16,171 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:16,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:42:16,359 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 5 more)] === [2021-11-20 06:42:16,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:42:16,360 INFO L85 PathProgramCache]: Analyzing trace with hash 364376406, now seen corresponding path program 1 times [2021-11-20 06:42:16,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:42:16,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1168766249] [2021-11-20 06:42:16,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:42:16,361 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:42:16,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:42:16,362 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:42:16,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-20 06:42:16,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:16,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 06:42:16,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:42:16,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:42:16,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:42:16,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:42:16,916 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:42:16,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1168766249] [2021-11-20 06:42:16,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1168766249] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:42:16,916 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:42:16,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-11-20 06:42:16,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304776037] [2021-11-20 06:42:16,917 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:42:16,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:42:16,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:42:16,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:42:16,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:42:16,918 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 06:42:17,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:42:17,054 INFO L93 Difference]: Finished difference Result 64 states and 73 transitions. [2021-11-20 06:42:17,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:42:17,056 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 12 [2021-11-20 06:42:17,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:42:17,057 INFO L225 Difference]: With dead ends: 64 [2021-11-20 06:42:17,057 INFO L226 Difference]: Without dead ends: 64 [2021-11-20 06:42:17,057 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:42:17,059 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 58 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:42:17,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 124 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:42:17,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-11-20 06:42:17,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 56. [2021-11-20 06:42:17,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 46 states have (on average 1.4782608695652173) internal successors, (68), 52 states have internal predecessors, (68), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 06:42:17,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 71 transitions. [2021-11-20 06:42:17,077 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 71 transitions. Word has length 12 [2021-11-20 06:42:17,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:42:17,078 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 71 transitions. [2021-11-20 06:42:17,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 06:42:17,078 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 71 transitions. [2021-11-20 06:42:17,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-20 06:42:17,080 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:42:17,080 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:42:17,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:17,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:42:17,293 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 5 more)] === [2021-11-20 06:42:17,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:42:17,294 INFO L85 PathProgramCache]: Analyzing trace with hash 219295069, now seen corresponding path program 1 times [2021-11-20 06:42:17,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:42:17,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [767013470] [2021-11-20 06:42:17,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:42:17,295 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:42:17,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:42:17,296 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:42:17,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-20 06:42:17,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:17,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 06:42:17,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:42:17,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:42:17,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:42:17,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:42:17,571 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:42:17,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [767013470] [2021-11-20 06:42:17,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [767013470] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:42:17,572 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:42:17,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2021-11-20 06:42:17,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423033282] [2021-11-20 06:42:17,572 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:42:17,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 06:42:17,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:42:17,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 06:42:17,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-20 06:42:17,573 INFO L87 Difference]: Start difference. First operand 56 states and 71 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 06:42:17,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:42:17,678 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2021-11-20 06:42:17,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 06:42:17,680 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 13 [2021-11-20 06:42:17,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:42:17,681 INFO L225 Difference]: With dead ends: 61 [2021-11-20 06:42:17,681 INFO L226 Difference]: Without dead ends: 61 [2021-11-20 06:42:17,681 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-20 06:42:17,682 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 50 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:42:17,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 143 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:42:17,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-11-20 06:42:17,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 55. [2021-11-20 06:42:17,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 46 states have (on average 1.434782608695652) internal successors, (66), 51 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 06:42:17,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 69 transitions. [2021-11-20 06:42:17,690 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 69 transitions. Word has length 13 [2021-11-20 06:42:17,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:42:17,691 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 69 transitions. [2021-11-20 06:42:17,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 06:42:17,691 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 69 transitions. [2021-11-20 06:42:17,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-20 06:42:17,692 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:42:17,692 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:42:17,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:17,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:42:17,903 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 5 more)] === [2021-11-20 06:42:17,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:42:17,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1791787383, now seen corresponding path program 1 times [2021-11-20 06:42:17,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:42:17,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1214785959] [2021-11-20 06:42:17,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:42:17,905 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:42:17,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:42:17,906 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:42:17,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-20 06:42:17,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:17,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 06:42:17,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:42:18,022 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 [2021-11-20 06:42:18,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:42:18,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:42:18,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:42:18,132 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:42:18,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1214785959] [2021-11-20 06:42:18,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1214785959] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:42:18,134 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:42:18,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-20 06:42:18,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415351195] [2021-11-20 06:42:18,135 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:42:18,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:42:18,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:42:18,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:42:18,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:42:18,136 INFO L87 Difference]: Start difference. First operand 55 states and 69 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 06:42:18,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:42:18,220 INFO L93 Difference]: Finished difference Result 61 states and 70 transitions. [2021-11-20 06:42:18,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:42:18,222 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-11-20 06:42:18,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:42:18,222 INFO L225 Difference]: With dead ends: 61 [2021-11-20 06:42:18,223 INFO L226 Difference]: Without dead ends: 61 [2021-11-20 06:42:18,223 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:42:18,224 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 16 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:42:18,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 105 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:42:18,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-11-20 06:42:18,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 55. [2021-11-20 06:42:18,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 46 states have (on average 1.4130434782608696) internal successors, (65), 51 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 06:42:18,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 68 transitions. [2021-11-20 06:42:18,230 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 68 transitions. Word has length 14 [2021-11-20 06:42:18,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:42:18,230 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 68 transitions. [2021-11-20 06:42:18,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 06:42:18,231 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 68 transitions. [2021-11-20 06:42:18,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-20 06:42:18,231 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:42:18,231 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:42:18,245 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:18,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:42:18,442 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 5 more)] === [2021-11-20 06:42:18,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:42:18,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1791739619, now seen corresponding path program 1 times [2021-11-20 06:42:18,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:42:18,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [170836896] [2021-11-20 06:42:18,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:42:18,443 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:42:18,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:42:18,443 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:42:18,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-20 06:42:18,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:18,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-20 06:42:18,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:42:20,733 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 06:42:20,733 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 30 treesize of output 32 [2021-11-20 06:42:20,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:42:20,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:42:26,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:42:26,681 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:42:26,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [170836896] [2021-11-20 06:42:26,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [170836896] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:42:26,681 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:42:26,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 10 [2021-11-20 06:42:26,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566194] [2021-11-20 06:42:26,682 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:42:26,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 06:42:26,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:42:26,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 06:42:26,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=102, Unknown=2, NotChecked=0, Total=132 [2021-11-20 06:42:26,684 INFO L87 Difference]: Start difference. First operand 55 states and 68 transitions. Second operand has 12 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 11 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 06:42:26,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:42:26,805 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2021-11-20 06:42:26,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 06:42:26,805 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 11 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 14 [2021-11-20 06:42:26,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:42:26,806 INFO L225 Difference]: With dead ends: 58 [2021-11-20 06:42:26,806 INFO L226 Difference]: Without dead ends: 58 [2021-11-20 06:42:26,806 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=36, Invalid=118, Unknown=2, NotChecked=0, Total=156 [2021-11-20 06:42:26,807 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 77 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:42:26,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 217 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 37 Invalid, 0 Unknown, 57 Unchecked, 0.1s Time] [2021-11-20 06:42:26,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-11-20 06:42:26,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2021-11-20 06:42:26,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 46 states have (on average 1.3478260869565217) internal successors, (62), 50 states have internal predecessors, (62), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 06:42:26,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 65 transitions. [2021-11-20 06:42:26,813 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 65 transitions. Word has length 14 [2021-11-20 06:42:26,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:42:26,813 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 65 transitions. [2021-11-20 06:42:26,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 11 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 06:42:26,814 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 65 transitions. [2021-11-20 06:42:26,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-20 06:42:26,814 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:42:26,815 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:42:26,829 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:27,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:42:27,015 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 5 more)] === [2021-11-20 06:42:27,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:42:27,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1791739620, now seen corresponding path program 1 times [2021-11-20 06:42:27,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:42:27,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [557087915] [2021-11-20 06:42:27,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:42:27,017 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:42:27,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:42:27,018 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:42:27,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-20 06:42:27,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:27,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 06:42:27,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:42:27,211 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-20 06:42:27,212 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 17 treesize of output 22 [2021-11-20 06:42:27,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:42:27,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:42:27,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:42:27,484 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:42:27,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [557087915] [2021-11-20 06:42:27,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [557087915] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:42:27,484 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:42:27,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 3] imperfect sequences [] total 7 [2021-11-20 06:42:27,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296641594] [2021-11-20 06:42:27,484 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:42:27,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 06:42:27,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:42:27,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 06:42:27,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-20 06:42:27,485 INFO L87 Difference]: Start difference. First operand 54 states and 65 transitions. Second operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 06:42:27,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:42:27,667 INFO L93 Difference]: Finished difference Result 57 states and 66 transitions. [2021-11-20 06:42:27,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 06:42:27,668 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 14 [2021-11-20 06:42:27,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:42:27,669 INFO L225 Difference]: With dead ends: 57 [2021-11-20 06:42:27,669 INFO L226 Difference]: Without dead ends: 57 [2021-11-20 06:42:27,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2021-11-20 06:42:27,670 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 44 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 11 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:42:27,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 106 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 39 Invalid, 0 Unknown, 11 Unchecked, 0.1s Time] [2021-11-20 06:42:27,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-11-20 06:42:27,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 53. [2021-11-20 06:42:27,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 46 states have (on average 1.326086956521739) internal successors, (61), 49 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 06:42:27,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 64 transitions. [2021-11-20 06:42:27,677 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 64 transitions. Word has length 14 [2021-11-20 06:42:27,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:42:27,677 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 64 transitions. [2021-11-20 06:42:27,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 06:42:27,677 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 64 transitions. [2021-11-20 06:42:27,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-20 06:42:27,678 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:42:27,678 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:42:27,693 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:27,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:42:27,879 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 5 more)] === [2021-11-20 06:42:27,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:42:27,879 INFO L85 PathProgramCache]: Analyzing trace with hash -2021592266, now seen corresponding path program 1 times [2021-11-20 06:42:27,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:42:27,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [703694074] [2021-11-20 06:42:27,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:42:27,880 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:42:27,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:42:27,882 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:42:27,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-20 06:42:27,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:27,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 06:42:27,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:42:27,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:42:27,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:42:28,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:42:28,041 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:42:28,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [703694074] [2021-11-20 06:42:28,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [703694074] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:42:28,042 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:42:28,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-20 06:42:28,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440282661] [2021-11-20 06:42:28,042 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:42:28,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:42:28,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:42:28,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:42:28,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:42:28,043 INFO L87 Difference]: Start difference. First operand 53 states and 64 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 06:42:28,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:42:28,111 INFO L93 Difference]: Finished difference Result 55 states and 65 transitions. [2021-11-20 06:42:28,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:42:28,112 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-11-20 06:42:28,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:42:28,119 INFO L225 Difference]: With dead ends: 55 [2021-11-20 06:42:28,119 INFO L226 Difference]: Without dead ends: 47 [2021-11-20 06:42:28,119 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:42:28,120 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 14 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:42:28,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 93 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:42:28,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-11-20 06:42:28,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-11-20 06:42:28,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 40 states have (on average 1.3) internal successors, (52), 43 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 06:42:28,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2021-11-20 06:42:28,124 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 14 [2021-11-20 06:42:28,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:42:28,125 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2021-11-20 06:42:28,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 06:42:28,125 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2021-11-20 06:42:28,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-20 06:42:28,126 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:42:28,126 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:42:28,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:28,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:42:28,327 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 5 more)] === [2021-11-20 06:42:28,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:42:28,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1988300888, now seen corresponding path program 1 times [2021-11-20 06:42:28,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:42:28,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [752219752] [2021-11-20 06:42:28,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:42:28,327 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:42:28,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:42:28,328 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:42:28,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-20 06:42:28,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:28,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 06:42:28,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:42:28,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:42:28,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:42:28,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:42:28,525 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:42:28,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [752219752] [2021-11-20 06:42:28,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [752219752] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:42:28,525 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:42:28,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-20 06:42:28,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558954097] [2021-11-20 06:42:28,526 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:42:28,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:42:28,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:42:28,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:42:28,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:42:28,527 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 06:42:28,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:42:28,554 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2021-11-20 06:42:28,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:42:28,556 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-11-20 06:42:28,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:42:28,556 INFO L225 Difference]: With dead ends: 35 [2021-11-20 06:42:28,556 INFO L226 Difference]: Without dead ends: 31 [2021-11-20 06:42:28,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:42:28,557 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:42:28,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 115 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:42:28,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-11-20 06:42:28,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-11-20 06:42:28,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 28 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 06:42:28,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2021-11-20 06:42:28,560 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 14 [2021-11-20 06:42:28,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:42:28,560 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2021-11-20 06:42:28,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 06:42:28,561 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2021-11-20 06:42:28,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-20 06:42:28,561 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:42:28,561 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:42:28,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:28,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:42:28,771 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 5 more)] === [2021-11-20 06:42:28,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:42:28,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1284300541, now seen corresponding path program 1 times [2021-11-20 06:42:28,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:42:28,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [565659125] [2021-11-20 06:42:28,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:42:28,772 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:42:28,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:42:28,773 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:42:28,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-20 06:42:28,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:28,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-20 06:42:28,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:42:28,959 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-20 06:42:28,959 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 25 treesize of output 32 [2021-11-20 06:42:29,234 INFO L354 Elim1Store]: treesize reduction 20, result has 28.6 percent of original size [2021-11-20 06:42:29,235 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 39 treesize of output 42 [2021-11-20 06:42:29,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:42:29,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:42:29,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:42:29,677 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:42:29,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [565659125] [2021-11-20 06:42:29,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [565659125] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:42:29,678 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:42:29,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [] total 11 [2021-11-20 06:42:29,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601202394] [2021-11-20 06:42:29,678 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:42:29,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 06:42:29,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:42:29,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 06:42:29,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2021-11-20 06:42:29,680 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand has 13 states, 12 states have (on average 2.5) internal successors, (30), 10 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 06:42:29,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:42:29,715 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2021-11-20 06:42:29,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 06:42:29,716 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.5) internal successors, (30), 10 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2021-11-20 06:42:29,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:42:29,716 INFO L225 Difference]: With dead ends: 32 [2021-11-20 06:42:29,717 INFO L226 Difference]: Without dead ends: 32 [2021-11-20 06:42:29,717 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2021-11-20 06:42:29,717 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 23 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:42:29,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 79 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 17 Unchecked, 0.0s Time] [2021-11-20 06:42:29,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-11-20 06:42:29,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2021-11-20 06:42:29,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 28 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 06:42:29,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2021-11-20 06:42:29,721 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 17 [2021-11-20 06:42:29,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:42:29,721 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2021-11-20 06:42:29,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.5) internal successors, (30), 10 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 06:42:29,721 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2021-11-20 06:42:29,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-20 06:42:29,722 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:42:29,722 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:42:29,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:29,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:42:29,931 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 5 more)] === [2021-11-20 06:42:29,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:42:29,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1284300540, now seen corresponding path program 1 times [2021-11-20 06:42:29,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:42:29,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1471870466] [2021-11-20 06:42:29,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:42:29,932 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:42:29,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:42:29,933 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:42:29,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-20 06:42:29,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:30,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-20 06:42:30,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:42:32,225 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 06:42:32,225 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 31 treesize of output 33 [2021-11-20 06:42:32,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:42:32,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:42:39,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:42:39,311 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:42:39,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1471870466] [2021-11-20 06:42:39,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1471870466] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:42:39,311 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:42:39,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2021-11-20 06:42:39,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606383234] [2021-11-20 06:42:39,312 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:42:39,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:42:39,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:42:39,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:42:39,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=59, Unknown=3, NotChecked=0, Total=90 [2021-11-20 06:42:39,313 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 06:42:41,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:42:41,383 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2021-11-20 06:42:41,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 06:42:41,384 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2021-11-20 06:42:41,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:42:41,385 INFO L225 Difference]: With dead ends: 30 [2021-11-20 06:42:41,385 INFO L226 Difference]: Without dead ends: 30 [2021-11-20 06:42:41,385 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=35, Invalid=71, Unknown=4, NotChecked=0, Total=110 [2021-11-20 06:42:41,386 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 38 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 18 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:42:41,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 72 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 0 Unknown, 18 Unchecked, 0.0s Time] [2021-11-20 06:42:41,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-11-20 06:42:41,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-11-20 06:42:41,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 27 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 06:42:41,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2021-11-20 06:42:41,389 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 17 [2021-11-20 06:42:41,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:42:41,389 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2021-11-20 06:42:41,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 06:42:41,390 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2021-11-20 06:42:41,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 06:42:41,390 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:42:41,390 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:42:41,401 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:41,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:42:41,591 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 5 more)] === [2021-11-20 06:42:41,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:42:41,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1158615054, now seen corresponding path program 1 times [2021-11-20 06:42:41,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:42:41,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [138461107] [2021-11-20 06:42:41,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:42:41,592 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:42:41,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:42:41,593 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:42:41,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-20 06:42:41,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:41,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 06:42:41,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:42:41,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:42:41,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:42:41,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:42:41,744 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:42:41,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [138461107] [2021-11-20 06:42:41,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [138461107] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:42:41,745 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:42:41,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-20 06:42:41,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455487123] [2021-11-20 06:42:41,745 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:42:41,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 06:42:41,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:42:41,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 06:42:41,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-20 06:42:41,746 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 06:42:41,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:42:41,800 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2021-11-20 06:42:41,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 06:42:41,800 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-11-20 06:42:41,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:42:41,801 INFO L225 Difference]: With dead ends: 35 [2021-11-20 06:42:41,801 INFO L226 Difference]: Without dead ends: 35 [2021-11-20 06:42:41,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:42:41,802 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 20 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:42:41,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 144 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:42:41,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-11-20 06:42:41,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 27. [2021-11-20 06:42:41,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 24 states have (on average 1.125) internal successors, (27), 24 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 06:42:41,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2021-11-20 06:42:41,805 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 18 [2021-11-20 06:42:41,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:42:41,806 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2021-11-20 06:42:41,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 06:42:41,806 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2021-11-20 06:42:41,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-20 06:42:41,807 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:42:41,807 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:42:41,816 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:42,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:42:42,016 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 5 more)] === [2021-11-20 06:42:42,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:42:42,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1557205148, now seen corresponding path program 1 times [2021-11-20 06:42:42,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:42:42,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1260786028] [2021-11-20 06:42:42,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:42:42,017 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:42:42,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:42:42,017 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:42:42,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-20 06:42:42,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:42,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 06:42:42,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:42:42,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:42:42,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:42:46,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:42:46,965 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:42:46,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1260786028] [2021-11-20 06:42:46,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1260786028] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:42:46,966 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:42:46,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-11-20 06:42:46,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240697946] [2021-11-20 06:42:46,966 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:42:46,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 06:42:46,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:42:46,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 06:42:46,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=114, Unknown=12, NotChecked=0, Total=156 [2021-11-20 06:42:46,967 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand has 13 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 06:42:47,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:42:47,115 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2021-11-20 06:42:47,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 06:42:47,116 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2021-11-20 06:42:47,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:42:47,117 INFO L225 Difference]: With dead ends: 30 [2021-11-20 06:42:47,117 INFO L226 Difference]: Without dead ends: 22 [2021-11-20 06:42:47,117 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=36, Invalid=134, Unknown=12, NotChecked=0, Total=182 [2021-11-20 06:42:47,118 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 31 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 35 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:42:47,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 145 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 35 Unchecked, 0.1s Time] [2021-11-20 06:42:47,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-11-20 06:42:47,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-11-20 06:42:47,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 06:42:47,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2021-11-20 06:42:47,122 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 19 [2021-11-20 06:42:47,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:42:47,122 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2021-11-20 06:42:47,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 06:42:47,122 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2021-11-20 06:42:47,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 06:42:47,123 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:42:47,123 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:42:47,152 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-11-20 06:42:47,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:42:47,337 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 5 more)] === [2021-11-20 06:42:47,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:42:47,337 INFO L85 PathProgramCache]: Analyzing trace with hash -261845752, now seen corresponding path program 1 times [2021-11-20 06:42:47,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:42:47,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1035436819] [2021-11-20 06:42:47,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:42:47,338 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:42:47,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:42:47,339 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:42:47,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-20 06:42:47,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:47,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 06:42:47,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:42:47,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:42:47,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:42:47,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:42:47,508 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:42:47,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1035436819] [2021-11-20 06:42:47,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1035436819] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:42:47,508 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:42:47,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-20 06:42:47,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379579439] [2021-11-20 06:42:47,508 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:42:47,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:42:47,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:42:47,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:42:47,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:42:47,509 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 06:42:47,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:42:47,525 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2021-11-20 06:42:47,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:42:47,526 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2021-11-20 06:42:47,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:42:47,526 INFO L225 Difference]: With dead ends: 22 [2021-11-20 06:42:47,526 INFO L226 Difference]: Without dead ends: 22 [2021-11-20 06:42:47,527 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:42:47,527 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 11 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:42:47,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 46 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:42:47,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-11-20 06:42:47,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-11-20 06:42:47,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 19 states have (on average 1.0) internal successors, (19), 19 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 06:42:47,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 21 transitions. [2021-11-20 06:42:47,530 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 21 transitions. Word has length 20 [2021-11-20 06:42:47,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:42:47,531 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 21 transitions. [2021-11-20 06:42:47,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 06:42:47,531 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 21 transitions. [2021-11-20 06:42:47,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-20 06:42:47,532 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:42:47,532 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:42:47,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:47,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:42:47,739 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 5 more)] === [2021-11-20 06:42:47,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:42:47,740 INFO L85 PathProgramCache]: Analyzing trace with hash 468899183, now seen corresponding path program 1 times [2021-11-20 06:42:47,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:42:47,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1431795817] [2021-11-20 06:42:47,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:42:47,740 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:42:47,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:42:47,742 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:42:47,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-20 06:42:47,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:42:47,805 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:42:47,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:42:47,874 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-11-20 06:42:47,875 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-20 06:42:47,876 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (7 of 8 remaining) [2021-11-20 06:42:47,882 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION (6 of 8 remaining) [2021-11-20 06:42:47,893 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION (5 of 8 remaining) [2021-11-20 06:42:47,894 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (4 of 8 remaining) [2021-11-20 06:42:47,894 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE (3 of 8 remaining) [2021-11-20 06:42:47,894 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE (2 of 8 remaining) [2021-11-20 06:42:47,894 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION (1 of 8 remaining) [2021-11-20 06:42:47,894 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION (0 of 8 remaining) [2021-11-20 06:42:47,906 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:48,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:42:48,106 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:42:48,109 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 06:42:48,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 06:42:48 BoogieIcfgContainer [2021-11-20 06:42:48,142 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 06:42:48,142 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 06:42:48,142 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 06:42:48,143 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 06:42:48,143 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:42:14" (3/4) ... [2021-11-20 06:42:48,145 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-20 06:42:48,145 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 06:42:48,145 INFO L158 Benchmark]: Toolchain (without parser) took 35204.36ms. Allocated memory was 73.4MB in the beginning and 111.1MB in the end (delta: 37.7MB). Free memory was 50.3MB in the beginning and 75.3MB in the end (delta: -25.1MB). Peak memory consumption was 11.3MB. Max. memory is 16.1GB. [2021-11-20 06:42:48,146 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 50.3MB. Free memory is still 30.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:42:48,146 INFO L158 Benchmark]: CACSL2BoogieTranslator took 840.75ms. Allocated memory is still 73.4MB. Free memory was 50.1MB in the beginning and 38.5MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-20 06:42:48,146 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.79ms. Allocated memory is still 73.4MB. Free memory was 38.5MB in the beginning and 36.2MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 06:42:48,146 INFO L158 Benchmark]: Boogie Preprocessor took 66.19ms. Allocated memory is still 73.4MB. Free memory was 36.2MB in the beginning and 56.9MB in the end (delta: -20.7MB). Peak memory consumption was 5.0MB. Max. memory is 16.1GB. [2021-11-20 06:42:48,146 INFO L158 Benchmark]: RCFGBuilder took 400.12ms. Allocated memory is still 73.4MB. Free memory was 56.9MB in the beginning and 45.0MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-20 06:42:48,147 INFO L158 Benchmark]: TraceAbstraction took 33829.10ms. Allocated memory was 73.4MB in the beginning and 111.1MB in the end (delta: 37.7MB). Free memory was 44.7MB in the beginning and 75.3MB in the end (delta: -30.6MB). Peak memory consumption was 7.0MB. Max. memory is 16.1GB. [2021-11-20 06:42:48,147 INFO L158 Benchmark]: Witness Printer took 2.56ms. Allocated memory is still 111.1MB. Free memory is still 75.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:42:48,148 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 50.3MB. Free memory is still 30.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 840.75ms. Allocated memory is still 73.4MB. Free memory was 50.1MB in the beginning and 38.5MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.79ms. Allocated memory is still 73.4MB. Free memory was 38.5MB in the beginning and 36.2MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 66.19ms. Allocated memory is still 73.4MB. Free memory was 36.2MB in the beginning and 56.9MB in the end (delta: -20.7MB). Peak memory consumption was 5.0MB. Max. memory is 16.1GB. * RCFGBuilder took 400.12ms. Allocated memory is still 73.4MB. Free memory was 56.9MB in the beginning and 45.0MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 33829.10ms. Allocated memory was 73.4MB in the beginning and 111.1MB in the end (delta: 37.7MB). Free memory was 44.7MB in the beginning and 75.3MB in the end (delta: -30.6MB). Peak memory consumption was 7.0MB. Max. memory is 16.1GB. * Witness Printer took 2.56ms. Allocated memory is still 111.1MB. Free memory is still 75.3MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 790]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 790. Possible FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; [L782] struct A a6; VAL [a6={2:0}, ldv_global_msg_list={1:0}] [L791] CALL entry_point() [L784] CALL, EXPR probe1_6(&a6) [L764] int ret = - -3; VAL [a={2:0}, a={2:0}, a6={2:0}, ldv_global_msg_list={1:0}, ret=3] [L765] CALL, EXPR ldv_malloc(sizeof(int)) VAL [\old(size)=4, a6={2:0}, ldv_global_msg_list={1:0}] [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L765] RET, EXPR ldv_malloc(sizeof(int)) VAL [a={2:0}, a={2:0}, a6={2:0}, ldv_global_msg_list={1:0}, ldv_malloc(sizeof(int))={6:0}, ret=3] [L765] int *p = (int *)ldv_malloc(sizeof(int)); [L766] COND FALSE !(p==0) [L768] CALL, EXPR f6() [L758] return __VERIFIER_nondet_int(); [L768] RET, EXPR f6() [L768] ret = f6() [L769] COND FALSE !(ret<0) [L771] CALL, EXPR g6() [L761] return __VERIFIER_nondet_int(); [L771] RET, EXPR g6() [L771] ret = g6() [L772] COND FALSE !(ret<0) VAL [a={2:0}, a={2:0}, a6={2:0}, ldv_global_msg_list={1:0}, p={6:0}, ret=0] [L774] a->p = p VAL [a={2:0}, a={2:0}, a6={2:0}, ldv_global_msg_list={1:0}, p={6:0}, ret=0] [L775] return 0; VAL [\result=0, a={2:0}, a={2:0}, a6={2:0}, ldv_global_msg_list={1:0}, p={6:0}, ret=0] [L784] RET, EXPR probe1_6(&a6) [L784] int ret = probe1_6(&a6); [L785] COND TRUE ret==0 [L786] FCALL disconnect_2_6(&a6) [L788] a6.p = 0 VAL [a6={2:0}, ldv_global_msg_list={1:0}, ret=0] [L791] RET entry_point() - UnprovableResult [Line: 774]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 774]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 777]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 777]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 777]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 788]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 788]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 34 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 33.7s, OverallIterations: 16, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 492 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 489 mSDsluCounter, 1682 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 138 IncrementalHoareTripleChecker+Unchecked, 1233 mSDsCounter, 35 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 468 IncrementalHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 35 mSolverCounterUnsat, 449 mSDtfsCounter, 468 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 428 GetRequests, 326 SyntacticMatches, 6 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 20.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=4, InterpolantAutomatonStates: 94, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 15 MinimizatonAttempts, 63 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 25.7s InterpolantComputationTime, 243 NumberOfCodeBlocks, 243 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 414 ConstructedInterpolants, 44 QuantifiedInterpolants, 3715 SizeOfPredicates, 21 NumberOfNonLiveVariables, 807 ConjunctsInSsa, 100 ConjunctsInUnsatCore, 30 InterpolantComputations, 30 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-20 06:42:48,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73941132-31d7-4ba5-9dd9-552f48a45c67/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample