./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL --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 9a814f1cabb0a814aaaa0ad04ef0792a07c6fb7c73876a2da6ae85372115ff6c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 04:55:17,188 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 04:55:17,192 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 04:55:17,261 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 04:55:17,262 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 04:55:17,264 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 04:55:17,266 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 04:55:17,269 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 04:55:17,272 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 04:55:17,273 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 04:55:17,275 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 04:55:17,277 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 04:55:17,279 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 04:55:17,281 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 04:55:17,287 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 04:55:17,290 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 04:55:17,299 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 04:55:17,301 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 04:55:17,304 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 04:55:17,316 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 04:55:17,318 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 04:55:17,321 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 04:55:17,322 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 04:55:17,327 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 04:55:17,332 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 04:55:17,334 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 04:55:17,338 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 04:55:17,340 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 04:55:17,341 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 04:55:17,343 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 04:55:17,343 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 04:55:17,344 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 04:55:17,345 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 04:55:17,347 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 04:55:17,348 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 04:55:17,348 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 04:55:17,349 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 04:55:17,349 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 04:55:17,349 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 04:55:17,350 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 04:55:17,351 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 04:55:17,352 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-19 04:55:17,384 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 04:55:17,385 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 04:55:17,385 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 04:55:17,385 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 04:55:17,386 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 04:55:17,387 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 04:55:17,388 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 04:55:17,388 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 04:55:17,388 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 04:55:17,389 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 04:55:17,389 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 04:55:17,390 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 04:55:17,390 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 04:55:17,390 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 04:55:17,390 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 04:55:17,391 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-19 04:55:17,391 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-19 04:55:17,391 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-19 04:55:17,392 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 04:55:17,392 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 04:55:17,392 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 04:55:17,393 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 04:55:17,393 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 04:55:17,393 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 04:55:17,394 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 04:55:17,394 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 04:55:17,394 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 04:55:17,395 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 04:55:17,395 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-19 04:55:17,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 04:55:17,396 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 04:55:17,396 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_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a814f1cabb0a814aaaa0ad04ef0792a07c6fb7c73876a2da6ae85372115ff6c [2021-11-19 04:55:17,694 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 04:55:17,722 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 04:55:17,726 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 04:55:17,727 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 04:55:17,728 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 04:55:17,730 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-1.i [2021-11-19 04:55:17,814 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/data/1265dd395/62501552a013462b9ea7b98320757f7d/FLAG7a8afbdeb [2021-11-19 04:55:18,469 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 04:55:18,470 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-1.i [2021-11-19 04:55:18,504 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/data/1265dd395/62501552a013462b9ea7b98320757f7d/FLAG7a8afbdeb [2021-11-19 04:55:18,723 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/data/1265dd395/62501552a013462b9ea7b98320757f7d [2021-11-19 04:55:18,725 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 04:55:18,727 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-19 04:55:18,729 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 04:55:18,729 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 04:55:18,736 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 04:55:18,736 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:55:18" (1/1) ... [2021-11-19 04:55:18,738 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68de64a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:18, skipping insertion in model container [2021-11-19 04:55:18,738 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:55:18" (1/1) ... [2021-11-19 04:55:18,744 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 04:55:18,813 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 04:55:19,306 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-1.i[33021,33034] [2021-11-19 04:55:19,440 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-1.i[44590,44603] [2021-11-19 04:55:19,463 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:55:19,486 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) [2021-11-19 04:55:19,487 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@540704ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:19, skipping insertion in model container [2021-11-19 04:55:19,488 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 04:55:19,490 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-11-19 04:55:19,494 INFO L158 Benchmark]: Toolchain (without parser) took 764.03ms. Allocated memory was 115.3MB in the beginning and 144.7MB in the end (delta: 29.4MB). Free memory was 82.3MB in the beginning and 106.3MB in the end (delta: -24.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-19 04:55:19,496 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 115.3MB. Free memory is still 71.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 04:55:19,499 INFO L158 Benchmark]: CACSL2BoogieTranslator took 760.92ms. Allocated memory was 115.3MB in the beginning and 144.7MB in the end (delta: 29.4MB). Free memory was 82.0MB in the beginning and 106.3MB in the end (delta: -24.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-19 04:55:19,502 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 115.3MB. Free memory is still 71.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 760.92ms. Allocated memory was 115.3MB in the beginning and 144.7MB in the end (delta: 29.4MB). Free memory was 82.0MB in the beginning and 106.3MB in the end (delta: -24.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 736]: 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_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL --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 9a814f1cabb0a814aaaa0ad04ef0792a07c6fb7c73876a2da6ae85372115ff6c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 04:55:22,286 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 04:55:22,289 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 04:55:22,357 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 04:55:22,358 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 04:55:22,365 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 04:55:22,368 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 04:55:22,376 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 04:55:22,380 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 04:55:22,384 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 04:55:22,386 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 04:55:22,388 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 04:55:22,388 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 04:55:22,396 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 04:55:22,397 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 04:55:22,399 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 04:55:22,405 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 04:55:22,406 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 04:55:22,408 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 04:55:22,413 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 04:55:22,416 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 04:55:22,418 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 04:55:22,421 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 04:55:22,423 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 04:55:22,429 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 04:55:22,430 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 04:55:22,430 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 04:55:22,433 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 04:55:22,434 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 04:55:22,435 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 04:55:22,435 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 04:55:22,436 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 04:55:22,442 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 04:55:22,443 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 04:55:22,444 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 04:55:22,445 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 04:55:22,446 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 04:55:22,446 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 04:55:22,446 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 04:55:22,447 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 04:55:22,448 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 04:55:22,449 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-19 04:55:22,507 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 04:55:22,507 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 04:55:22,508 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 04:55:22,508 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 04:55:22,509 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 04:55:22,510 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 04:55:22,511 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 04:55:22,512 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 04:55:22,512 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 04:55:22,512 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 04:55:22,514 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 04:55:22,514 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 04:55:22,514 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 04:55:22,514 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 04:55:22,515 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 04:55:22,515 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-19 04:55:22,515 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-19 04:55:22,515 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-19 04:55:22,516 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 04:55:22,516 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 04:55:22,516 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 04:55:22,516 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 04:55:22,516 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 04:55:22,517 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 04:55:22,517 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 04:55:22,517 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 04:55:22,518 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 04:55:22,518 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 04:55:22,518 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 04:55:22,518 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 04:55:22,519 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-19 04:55:22,519 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 04:55:22,519 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 04:55:22,519 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 04:55:22,520 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_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a814f1cabb0a814aaaa0ad04ef0792a07c6fb7c73876a2da6ae85372115ff6c [2021-11-19 04:55:23,011 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 04:55:23,057 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 04:55:23,060 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 04:55:23,064 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 04:55:23,065 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 04:55:23,067 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-1.i [2021-11-19 04:55:23,160 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/data/5371865d4/f03b000f41094eee8743d0b6a38d8048/FLAGa707f3059 [2021-11-19 04:55:24,048 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 04:55:24,049 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-1.i [2021-11-19 04:55:24,071 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/data/5371865d4/f03b000f41094eee8743d0b6a38d8048/FLAGa707f3059 [2021-11-19 04:55:24,117 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/data/5371865d4/f03b000f41094eee8743d0b6a38d8048 [2021-11-19 04:55:24,120 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 04:55:24,121 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-19 04:55:24,123 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 04:55:24,123 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 04:55:24,129 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 04:55:24,130 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:55:24" (1/1) ... [2021-11-19 04:55:24,132 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@691a986d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:24, skipping insertion in model container [2021-11-19 04:55:24,132 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:55:24" (1/1) ... [2021-11-19 04:55:24,143 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 04:55:24,223 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 04:55:24,877 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-1.i[33021,33034] [2021-11-19 04:55:25,110 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-1.i[44590,44603] [2021-11-19 04:55:25,127 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:55:25,153 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 04:55:25,179 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 04:55:25,221 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-1.i[33021,33034] [2021-11-19 04:55:25,362 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-1.i[44590,44603] [2021-11-19 04:55:25,365 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:55:25,372 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 04:55:25,404 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-1.i[33021,33034] [2021-11-19 04:55:25,500 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-1.i[44590,44603] [2021-11-19 04:55:25,504 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:55:25,564 INFO L208 MainTranslator]: Completed translation [2021-11-19 04:55:25,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:25 WrapperNode [2021-11-19 04:55:25,565 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 04:55:25,566 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 04:55:25,567 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 04:55:25,567 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 04:55:25,582 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:25" (1/1) ... [2021-11-19 04:55:25,583 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:25" (1/1) ... [2021-11-19 04:55:25,630 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:25" (1/1) ... [2021-11-19 04:55:25,631 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:25" (1/1) ... [2021-11-19 04:55:25,726 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:25" (1/1) ... [2021-11-19 04:55:25,754 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:25" (1/1) ... [2021-11-19 04:55:25,779 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:25" (1/1) ... [2021-11-19 04:55:25,818 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 04:55:25,819 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 04:55:25,820 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 04:55:25,820 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 04:55:25,821 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:25" (1/1) ... [2021-11-19 04:55:25,828 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 04:55:25,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:55:25,855 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 04:55:25,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 04:55:25,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-19 04:55:25,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 04:55:25,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-11-19 04:55:25,910 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-19 04:55:25,911 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-19 04:55:25,911 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-19 04:55:25,911 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-19 04:55:25,911 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-19 04:55:25,911 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-19 04:55:25,912 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 04:55:25,912 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2021-11-19 04:55:25,912 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-19 04:55:25,912 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-19 04:55:25,912 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-11-19 04:55:25,913 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-11-19 04:55:25,913 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-11-19 04:55:25,913 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-11-19 04:55:25,913 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-19 04:55:25,913 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-11-19 04:55:25,914 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-11-19 04:55:25,914 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-19 04:55:25,914 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-11-19 04:55:25,914 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-11-19 04:55:25,914 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-11-19 04:55:25,915 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-19 04:55:25,915 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-11-19 04:55:25,915 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-11-19 04:55:25,915 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-11-19 04:55:25,915 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-11-19 04:55:25,916 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-11-19 04:55:25,916 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-11-19 04:55:25,916 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-11-19 04:55:25,917 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-19 04:55:25,918 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-11-19 04:55:25,918 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-11-19 04:55:25,919 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-11-19 04:55:25,919 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-11-19 04:55:25,920 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-11-19 04:55:25,920 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-11-19 04:55:25,920 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-11-19 04:55:25,920 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-11-19 04:55:25,921 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-11-19 04:55:25,921 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-11-19 04:55:25,921 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-11-19 04:55:25,921 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-11-19 04:55:25,922 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-11-19 04:55:25,922 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-11-19 04:55:25,922 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-11-19 04:55:25,922 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-11-19 04:55:25,923 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-11-19 04:55:25,923 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-11-19 04:55:25,924 INFO L130 BoogieDeclarations]: Found specification of procedure ffsl [2021-11-19 04:55:25,924 INFO L130 BoogieDeclarations]: Found specification of procedure ffsll [2021-11-19 04:55:25,924 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-11-19 04:55:25,926 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-11-19 04:55:25,927 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp_l [2021-11-19 04:55:25,928 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp_l [2021-11-19 04:55:25,929 INFO L130 BoogieDeclarations]: Found specification of procedure explicit_bzero [2021-11-19 04:55:25,929 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-11-19 04:55:25,930 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-11-19 04:55:25,930 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-11-19 04:55:25,930 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-11-19 04:55:25,931 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-11-19 04:55:25,931 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-11-19 04:55:25,931 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-19 04:55:25,931 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-19 04:55:25,932 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-19 04:55:25,932 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-19 04:55:25,932 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-19 04:55:25,933 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-19 04:55:25,933 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-19 04:55:25,933 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-19 04:55:25,933 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-19 04:55:25,935 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-19 04:55:25,935 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-19 04:55:25,935 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-19 04:55:25,936 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-19 04:55:25,936 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-19 04:55:25,936 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-19 04:55:25,936 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-19 04:55:25,936 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-19 04:55:25,937 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-19 04:55:25,937 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-19 04:55:25,937 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-19 04:55:25,937 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-19 04:55:25,938 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-19 04:55:25,938 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-19 04:55:25,938 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-19 04:55:25,938 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-19 04:55:25,939 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-19 04:55:25,939 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-19 04:55:25,939 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-19 04:55:25,940 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-19 04:55:25,940 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-19 04:55:25,940 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-19 04:55:25,941 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-19 04:55:25,941 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-19 04:55:25,941 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-19 04:55:25,941 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-19 04:55:25,941 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-19 04:55:25,942 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-19 04:55:25,942 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-19 04:55:25,942 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-19 04:55:25,942 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-19 04:55:25,943 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-19 04:55:25,943 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-19 04:55:25,943 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-19 04:55:25,943 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-19 04:55:25,944 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-19 04:55:25,944 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-19 04:55:25,944 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-19 04:55:25,945 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-19 04:55:25,945 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-19 04:55:25,945 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-19 04:55:25,946 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-19 04:55:25,947 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-19 04:55:25,951 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-19 04:55:25,953 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-19 04:55:25,953 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-19 04:55:25,953 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-19 04:55:25,953 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-19 04:55:25,954 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-19 04:55:25,955 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-19 04:55:25,955 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-19 04:55:25,956 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-19 04:55:25,962 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-19 04:55:25,963 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-19 04:55:25,963 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-19 04:55:25,963 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-19 04:55:25,963 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-19 04:55:25,963 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-19 04:55:25,964 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-19 04:55:25,964 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-19 04:55:25,964 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-19 04:55:25,964 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-19 04:55:25,964 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-19 04:55:25,965 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-19 04:55:25,965 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-19 04:55:25,965 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-19 04:55:25,965 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-19 04:55:25,966 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-19 04:55:25,966 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-19 04:55:25,966 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-19 04:55:25,966 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-19 04:55:25,966 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-19 04:55:25,966 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-19 04:55:25,967 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-19 04:55:25,967 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-19 04:55:25,967 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-19 04:55:25,967 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-19 04:55:25,967 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-19 04:55:25,968 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-19 04:55:25,968 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-19 04:55:25,968 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-19 04:55:25,968 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-19 04:55:25,968 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-19 04:55:25,969 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-19 04:55:25,969 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-19 04:55:25,969 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-19 04:55:25,969 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-19 04:55:25,969 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-19 04:55:25,970 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-19 04:55:25,970 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-19 04:55:25,970 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-19 04:55:25,970 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-19 04:55:25,970 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-19 04:55:25,970 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-19 04:55:25,971 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-19 04:55:25,971 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-19 04:55:25,971 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-19 04:55:25,971 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-19 04:55:25,971 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-19 04:55:25,972 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-19 04:55:25,972 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-19 04:55:25,972 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-19 04:55:25,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 04:55:25,972 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 04:55:25,973 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2021-11-19 04:55:25,973 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-19 04:55:25,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 04:55:25,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 04:55:25,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 04:55:25,974 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 04:55:25,974 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 04:55:25,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 04:55:25,975 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 04:55:25,975 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-19 04:55:25,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 04:55:25,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-19 04:55:25,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 04:55:25,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 04:55:25,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-11-19 04:55:25,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-19 04:55:26,535 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 04:55:26,537 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 04:55:26,652 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-19 04:55:32,507 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 04:55:32,529 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 04:55:32,529 INFO L301 CfgBuilder]: Removed 63 assume(true) statements. [2021-11-19 04:55:32,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:55:32 BoogieIcfgContainer [2021-11-19 04:55:32,533 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 04:55:32,535 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 04:55:32,536 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 04:55:32,539 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 04:55:32,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:55:24" (1/3) ... [2021-11-19 04:55:32,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aa8fe98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:55:32, skipping insertion in model container [2021-11-19 04:55:32,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:25" (2/3) ... [2021-11-19 04:55:32,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aa8fe98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:55:32, skipping insertion in model container [2021-11-19 04:55:32,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:55:32" (3/3) ... [2021-11-19 04:55:32,543 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test3-1.i [2021-11-19 04:55:32,549 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 04:55:32,550 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 534 error locations. [2021-11-19 04:55:32,627 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 04:55:32,642 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 [2021-11-19 04:55:32,642 INFO L340 AbstractCegarLoop]: Starting to check reachability of 534 error locations. [2021-11-19 04:55:32,707 INFO L276 IsEmpty]: Start isEmpty. Operand has 1080 states, 532 states have (on average 2.2406015037593985) internal successors, (1192), 1068 states have internal predecessors, (1192), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-19 04:55:32,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-19 04:55:32,717 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:55:32,717 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:55:32,718 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-19 04:55:32,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:55:32,726 INFO L85 PathProgramCache]: Analyzing trace with hash 976431319, now seen corresponding path program 1 times [2021-11-19 04:55:32,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:55:32,740 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [30668691] [2021-11-19 04:55:32,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:55:32,742 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:55:32,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:55:32,746 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:55:32,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 04:55:32,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:55:32,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 04:55:32,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:55:33,154 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 [2021-11-19 04:55:33,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:55:33,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:55:33,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:55:33,232 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:55:33,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [30668691] [2021-11-19 04:55:33,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [30668691] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:55:33,234 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:55:33,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 04:55:33,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182538417] [2021-11-19 04:55:33,239 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:55:33,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 04:55:33,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:55:33,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 04:55:33,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 04:55:33,304 INFO L87 Difference]: Start difference. First operand has 1080 states, 532 states have (on average 2.2406015037593985) internal successors, (1192), 1068 states have internal predecessors, (1192), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:55:35,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:55:35,906 INFO L93 Difference]: Finished difference Result 1075 states and 1140 transitions. [2021-11-19 04:55:35,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 04:55:35,912 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-11-19 04:55:35,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:55:35,947 INFO L225 Difference]: With dead ends: 1075 [2021-11-19 04:55:35,948 INFO L226 Difference]: Without dead ends: 1072 [2021-11-19 04:55:35,950 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 04:55:35,954 INFO L933 BasicCegarLoop]: 656 mSDtfsCounter, 978 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 982 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-19 04:55:35,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [982 Valid, 741 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-11-19 04:55:35,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1072 states. [2021-11-19 04:55:36,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1072 to 1064. [2021-11-19 04:55:36,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1064 states, 532 states have (on average 2.0845864661654137) internal successors, (1109), 1053 states have internal predecessors, (1109), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-19 04:55:36,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1064 states to 1064 states and 1130 transitions. [2021-11-19 04:55:36,070 INFO L78 Accepts]: Start accepts. Automaton has 1064 states and 1130 transitions. Word has length 7 [2021-11-19 04:55:36,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:55:36,071 INFO L470 AbstractCegarLoop]: Abstraction has 1064 states and 1130 transitions. [2021-11-19 04:55:36,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:55:36,071 INFO L276 IsEmpty]: Start isEmpty. Operand 1064 states and 1130 transitions. [2021-11-19 04:55:36,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-19 04:55:36,072 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:55:36,072 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:55:36,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 04:55:36,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:55:36,290 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-19 04:55:36,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:55:36,291 INFO L85 PathProgramCache]: Analyzing trace with hash 976431320, now seen corresponding path program 1 times [2021-11-19 04:55:36,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:55:36,292 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1645176049] [2021-11-19 04:55:36,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:55:36,292 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:55:36,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:55:36,294 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:55:36,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 04:55:36,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:55:36,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 04:55:36,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:55:36,599 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 [2021-11-19 04:55:36,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:55:36,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:55:36,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:55:36,704 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:55:36,704 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1645176049] [2021-11-19 04:55:36,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1645176049] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:55:36,704 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:55:36,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-19 04:55:36,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865134375] [2021-11-19 04:55:36,705 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:55:36,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 04:55:36,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:55:36,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 04:55:36,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:55:36,707 INFO L87 Difference]: Start difference. First operand 1064 states and 1130 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:55:43,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:55:43,020 INFO L93 Difference]: Finished difference Result 1538 states and 1638 transitions. [2021-11-19 04:55:43,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 04:55:43,021 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-11-19 04:55:43,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:55:43,033 INFO L225 Difference]: With dead ends: 1538 [2021-11-19 04:55:43,033 INFO L226 Difference]: Without dead ends: 1538 [2021-11-19 04:55:43,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:55:43,036 INFO L933 BasicCegarLoop]: 795 mSDtfsCounter, 1143 mSDsluCounter, 842 mSDsCounter, 0 mSdLazyCounter, 1072 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1145 SdHoareTripleChecker+Valid, 1637 SdHoareTripleChecker+Invalid, 1090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2021-11-19 04:55:43,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1145 Valid, 1637 Invalid, 1090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1072 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2021-11-19 04:55:43,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1538 states. [2021-11-19 04:55:43,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1538 to 1099. [2021-11-19 04:55:43,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1099 states, 576 states have (on average 2.0625) internal successors, (1188), 1088 states have internal predecessors, (1188), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-19 04:55:43,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 1209 transitions. [2021-11-19 04:55:43,098 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 1209 transitions. Word has length 7 [2021-11-19 04:55:43,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:55:43,098 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 1209 transitions. [2021-11-19 04:55:43,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:55:43,099 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 1209 transitions. [2021-11-19 04:55:43,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-19 04:55:43,100 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:55:43,100 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:55:43,130 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 04:55:43,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:55:43,325 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr6REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-19 04:55:43,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:55:43,325 INFO L85 PathProgramCache]: Analyzing trace with hash -499465612, now seen corresponding path program 1 times [2021-11-19 04:55:43,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:55:43,326 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [966184120] [2021-11-19 04:55:43,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:55:43,327 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:55:43,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:55:43,331 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:55:43,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 04:55:43,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:55:43,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 04:55:43,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:55:43,628 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 [2021-11-19 04:55:43,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:55:43,648 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:55:43,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:55:43,696 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:55:43,696 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [966184120] [2021-11-19 04:55:43,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [966184120] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:55:43,696 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:55:43,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 04:55:43,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271776663] [2021-11-19 04:55:43,698 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:55:43,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 04:55:43,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:55:43,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 04:55:43,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 04:55:43,700 INFO L87 Difference]: Start difference. First operand 1099 states and 1209 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:55:46,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:55:46,302 INFO L93 Difference]: Finished difference Result 1427 states and 1562 transitions. [2021-11-19 04:55:46,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 04:55:46,304 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-11-19 04:55:46,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:55:46,313 INFO L225 Difference]: With dead ends: 1427 [2021-11-19 04:55:46,314 INFO L226 Difference]: Without dead ends: 1427 [2021-11-19 04:55:46,314 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 04:55:46,316 INFO L933 BasicCegarLoop]: 962 mSDtfsCounter, 980 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 716 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 984 SdHoareTripleChecker+Valid, 1235 SdHoareTripleChecker+Invalid, 770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-19 04:55:46,316 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [984 Valid, 1235 Invalid, 770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 716 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-11-19 04:55:46,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1427 states. [2021-11-19 04:55:46,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1427 to 1050. [2021-11-19 04:55:46,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1050 states, 576 states have (on average 1.9722222222222223) internal successors, (1136), 1039 states have internal predecessors, (1136), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-19 04:55:46,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1050 states to 1050 states and 1157 transitions. [2021-11-19 04:55:46,354 INFO L78 Accepts]: Start accepts. Automaton has 1050 states and 1157 transitions. Word has length 12 [2021-11-19 04:55:46,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:55:46,354 INFO L470 AbstractCegarLoop]: Abstraction has 1050 states and 1157 transitions. [2021-11-19 04:55:46,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:55:46,355 INFO L276 IsEmpty]: Start isEmpty. Operand 1050 states and 1157 transitions. [2021-11-19 04:55:46,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-19 04:55:46,355 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:55:46,356 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:55:46,371 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-19 04:55:46,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:55:46,568 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr7REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-19 04:55:46,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:55:46,568 INFO L85 PathProgramCache]: Analyzing trace with hash -499465611, now seen corresponding path program 1 times [2021-11-19 04:55:46,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:55:46,569 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [974645883] [2021-11-19 04:55:46,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:55:46,570 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:55:46,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:55:46,578 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:55:46,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 04:55:46,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:55:46,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 04:55:46,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:55:46,846 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 [2021-11-19 04:55:46,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:55:46,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:55:47,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:55:47,013 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:55:47,013 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [974645883] [2021-11-19 04:55:47,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [974645883] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:55:47,014 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:55:47,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-19 04:55:47,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43233915] [2021-11-19 04:55:47,014 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:55:47,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 04:55:47,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:55:47,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 04:55:47,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:55:47,016 INFO L87 Difference]: Start difference. First operand 1050 states and 1157 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:55:52,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:55:52,619 INFO L93 Difference]: Finished difference Result 1470 states and 1569 transitions. [2021-11-19 04:55:52,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 04:55:52,620 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-11-19 04:55:52,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:55:52,630 INFO L225 Difference]: With dead ends: 1470 [2021-11-19 04:55:52,630 INFO L226 Difference]: Without dead ends: 1470 [2021-11-19 04:55:52,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:55:52,632 INFO L933 BasicCegarLoop]: 1135 mSDtfsCounter, 1395 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1397 SdHoareTripleChecker+Valid, 1578 SdHoareTripleChecker+Invalid, 787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2021-11-19 04:55:52,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1397 Valid, 1578 Invalid, 787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 772 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2021-11-19 04:55:52,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1470 states. [2021-11-19 04:55:52,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1470 to 1040. [2021-11-19 04:55:52,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1040 states, 576 states have (on average 1.9496527777777777) internal successors, (1123), 1029 states have internal predecessors, (1123), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-19 04:55:52,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1040 states to 1040 states and 1144 transitions. [2021-11-19 04:55:52,673 INFO L78 Accepts]: Start accepts. Automaton has 1040 states and 1144 transitions. Word has length 12 [2021-11-19 04:55:52,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:55:52,674 INFO L470 AbstractCegarLoop]: Abstraction has 1040 states and 1144 transitions. [2021-11-19 04:55:52,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:55:52,675 INFO L276 IsEmpty]: Start isEmpty. Operand 1040 states and 1144 transitions. [2021-11-19 04:55:52,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-19 04:55:52,676 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:55:52,676 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:55:52,698 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 04:55:52,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:55:52,891 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr526REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-19 04:55:52,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:55:52,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1684895394, now seen corresponding path program 1 times [2021-11-19 04:55:52,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:55:52,892 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1354029809] [2021-11-19 04:55:52,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:55:52,893 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:55:52,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:55:52,894 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:55:52,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 04:55:53,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:55:53,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 04:55:53,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:55:53,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:55:53,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:55:53,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:55:53,308 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:55:53,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1354029809] [2021-11-19 04:55:53,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1354029809] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:55:53,308 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:55:53,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 04:55:53,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867712044] [2021-11-19 04:55:53,308 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:55:53,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 04:55:53,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:55:53,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 04:55:53,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:55:53,309 INFO L87 Difference]: Start difference. First operand 1040 states and 1144 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:55:54,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:55:54,301 INFO L93 Difference]: Finished difference Result 1486 states and 1622 transitions. [2021-11-19 04:55:54,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 04:55:54,302 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-11-19 04:55:54,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:55:54,312 INFO L225 Difference]: With dead ends: 1486 [2021-11-19 04:55:54,313 INFO L226 Difference]: Without dead ends: 1486 [2021-11-19 04:55:54,313 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:55:54,314 INFO L933 BasicCegarLoop]: 1123 mSDtfsCounter, 547 mSDsluCounter, 1923 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 3046 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 04:55:54,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [549 Valid, 3046 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-19 04:55:54,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1486 states. [2021-11-19 04:55:54,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1486 to 1276. [2021-11-19 04:55:54,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1276 states, 812 states have (on average 1.937192118226601) internal successors, (1573), 1265 states have internal predecessors, (1573), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-19 04:55:54,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 1594 transitions. [2021-11-19 04:55:54,393 INFO L78 Accepts]: Start accepts. Automaton has 1276 states and 1594 transitions. Word has length 15 [2021-11-19 04:55:54,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:55:54,394 INFO L470 AbstractCegarLoop]: Abstraction has 1276 states and 1594 transitions. [2021-11-19 04:55:54,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:55:54,394 INFO L276 IsEmpty]: Start isEmpty. Operand 1276 states and 1594 transitions. [2021-11-19 04:55:54,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-19 04:55:54,395 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:55:54,396 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:55:54,418 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 04:55:54,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:55:54,611 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr532ENSURES_VIOLATIONMEMORY_LEAK === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-19 04:55:54,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:55:54,612 INFO L85 PathProgramCache]: Analyzing trace with hash 692149927, now seen corresponding path program 1 times [2021-11-19 04:55:54,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:55:54,613 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1447472856] [2021-11-19 04:55:54,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:55:54,613 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:55:54,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:55:54,614 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:55:54,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 04:55:54,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:55:54,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 04:55:54,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:55:54,899 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 04:55:54,900 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 04:55:54,901 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 04:55:54,966 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-19 04:55:54,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-19 04:55:55,043 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-19 04:55:55,044 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-11-19 04:55:55,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:55:55,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:55:55,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:55:55,173 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:55:55,173 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1447472856] [2021-11-19 04:55:55,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1447472856] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:55:55,174 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:55:55,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 04:55:55,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911533472] [2021-11-19 04:55:55,175 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:55:55,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 04:55:55,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:55:55,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 04:55:55,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 04:55:55,176 INFO L87 Difference]: Start difference. First operand 1276 states and 1594 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:55:58,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:55:58,277 INFO L93 Difference]: Finished difference Result 1639 states and 2018 transitions. [2021-11-19 04:55:58,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 04:55:58,278 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-11-19 04:55:58,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:55:58,289 INFO L225 Difference]: With dead ends: 1639 [2021-11-19 04:55:58,289 INFO L226 Difference]: Without dead ends: 1639 [2021-11-19 04:55:58,290 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-19 04:55:58,291 INFO L933 BasicCegarLoop]: 1007 mSDtfsCounter, 361 mSDsluCounter, 2802 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 3809 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-11-19 04:55:58,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [362 Valid, 3809 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-11-19 04:55:58,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1639 states. [2021-11-19 04:55:58,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1639 to 1275. [2021-11-19 04:55:58,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1275 states, 811 states have (on average 1.93711467324291) internal successors, (1571), 1264 states have internal predecessors, (1571), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-19 04:55:58,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1275 states to 1275 states and 1592 transitions. [2021-11-19 04:55:58,337 INFO L78 Accepts]: Start accepts. Automaton has 1275 states and 1592 transitions. Word has length 16 [2021-11-19 04:55:58,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:55:58,337 INFO L470 AbstractCegarLoop]: Abstraction has 1275 states and 1592 transitions. [2021-11-19 04:55:58,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:55:58,338 INFO L276 IsEmpty]: Start isEmpty. Operand 1275 states and 1592 transitions. [2021-11-19 04:55:58,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-19 04:55:58,339 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:55:58,339 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, 1] [2021-11-19 04:55:58,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 04:55:58,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:55:58,555 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr14REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-19 04:55:58,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:55:58,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1440200288, now seen corresponding path program 1 times [2021-11-19 04:55:58,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:55:58,557 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1928245507] [2021-11-19 04:55:58,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:55:58,558 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:55:58,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:55:58,559 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:55:58,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 04:55:58,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:55:58,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 04:55:58,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:55:58,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:55:58,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:55:58,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:55:58,987 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:55:58,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1928245507] [2021-11-19 04:55:58,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1928245507] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:55:58,988 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:55:58,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 04:55:58,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621063562] [2021-11-19 04:55:58,989 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:55:58,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 04:55:58,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:55:58,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 04:55:58,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:55:58,990 INFO L87 Difference]: Start difference. First operand 1275 states and 1592 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:55:59,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:55:59,033 INFO L93 Difference]: Finished difference Result 1215 states and 1506 transitions. [2021-11-19 04:55:59,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 04:55:59,034 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2021-11-19 04:55:59,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:55:59,043 INFO L225 Difference]: With dead ends: 1215 [2021-11-19 04:55:59,043 INFO L226 Difference]: Without dead ends: 1215 [2021-11-19 04:55:59,043 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:55:59,044 INFO L933 BasicCegarLoop]: 1014 mSDtfsCounter, 964 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 968 SdHoareTripleChecker+Valid, 1126 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 04:55:59,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [968 Valid, 1126 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 04:55:59,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2021-11-19 04:55:59,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 1215. [2021-11-19 04:55:59,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1215 states, 775 states have (on average 1.9161290322580644) internal successors, (1485), 1204 states have internal predecessors, (1485), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-19 04:55:59,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 1506 transitions. [2021-11-19 04:55:59,083 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 1506 transitions. Word has length 22 [2021-11-19 04:55:59,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:55:59,083 INFO L470 AbstractCegarLoop]: Abstraction has 1215 states and 1506 transitions. [2021-11-19 04:55:59,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:55:59,084 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 1506 transitions. [2021-11-19 04:55:59,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-19 04:55:59,085 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:55:59,085 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, 1, 1, 1] [2021-11-19 04:55:59,106 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 04:55:59,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:55:59,298 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr38REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-19 04:55:59,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:55:59,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1053008550, now seen corresponding path program 1 times [2021-11-19 04:55:59,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:55:59,299 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [21685006] [2021-11-19 04:55:59,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:55:59,300 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:55:59,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:55:59,300 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:55:59,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 04:55:59,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:55:59,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 04:55:59,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:55:59,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:55:59,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:55:59,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:55:59,704 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:55:59,704 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [21685006] [2021-11-19 04:55:59,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [21685006] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:55:59,705 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:55:59,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-19 04:55:59,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698188236] [2021-11-19 04:55:59,705 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:55:59,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 04:55:59,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:55:59,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 04:55:59,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:55:59,707 INFO L87 Difference]: Start difference. First operand 1215 states and 1506 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:55:59,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:55:59,822 INFO L93 Difference]: Finished difference Result 1187 states and 1450 transitions. [2021-11-19 04:55:59,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 04:55:59,823 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2021-11-19 04:55:59,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:55:59,831 INFO L225 Difference]: With dead ends: 1187 [2021-11-19 04:55:59,832 INFO L226 Difference]: Without dead ends: 1187 [2021-11-19 04:55:59,832 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 04:55:59,833 INFO L933 BasicCegarLoop]: 969 mSDtfsCounter, 1860 mSDsluCounter, 1019 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1864 SdHoareTripleChecker+Valid, 1988 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:55:59,834 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1864 Valid, 1988 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 04:55:59,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1187 states. [2021-11-19 04:55:59,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1187 to 1185. [2021-11-19 04:55:59,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1185 states, 759 states have (on average 1.8801054018445322) internal successors, (1427), 1174 states have internal predecessors, (1427), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-19 04:55:59,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1185 states to 1185 states and 1448 transitions. [2021-11-19 04:55:59,870 INFO L78 Accepts]: Start accepts. Automaton has 1185 states and 1448 transitions. Word has length 24 [2021-11-19 04:55:59,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:55:59,871 INFO L470 AbstractCegarLoop]: Abstraction has 1185 states and 1448 transitions. [2021-11-19 04:55:59,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:55:59,871 INFO L276 IsEmpty]: Start isEmpty. Operand 1185 states and 1448 transitions. [2021-11-19 04:55:59,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-19 04:55:59,872 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:55:59,873 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:55:59,893 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 04:56:00,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:56:00,089 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr52REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-19 04:56:00,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:56:00,089 INFO L85 PathProgramCache]: Analyzing trace with hash 646849896, now seen corresponding path program 1 times [2021-11-19 04:56:00,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:56:00,090 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [20559750] [2021-11-19 04:56:00,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:56:00,090 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:56:00,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:56:00,091 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:56:00,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 04:56:00,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:56:00,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 04:56:00,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:56:00,361 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 [2021-11-19 04:56:00,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:56:00,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:56:00,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:56:00,695 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:56:00,695 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [20559750] [2021-11-19 04:56:00,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [20559750] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:56:00,696 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:56:00,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 04:56:00,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486064446] [2021-11-19 04:56:00,697 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:56:00,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 04:56:00,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:56:00,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 04:56:00,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:56:00,698 INFO L87 Difference]: Start difference. First operand 1185 states and 1448 transitions. Second operand has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:56:03,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:56:03,307 INFO L93 Difference]: Finished difference Result 1656 states and 2041 transitions. [2021-11-19 04:56:03,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 04:56:03,308 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2021-11-19 04:56:03,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:56:03,318 INFO L225 Difference]: With dead ends: 1656 [2021-11-19 04:56:03,318 INFO L226 Difference]: Without dead ends: 1656 [2021-11-19 04:56:03,319 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:56:03,320 INFO L933 BasicCegarLoop]: 527 mSDtfsCounter, 1702 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 932 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1703 SdHoareTripleChecker+Valid, 1108 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 932 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-19 04:56:03,320 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1703 Valid, 1108 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 932 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-11-19 04:56:03,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1656 states. [2021-11-19 04:56:03,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1656 to 1181. [2021-11-19 04:56:03,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1181 states, 759 states have (on average 1.8695652173913044) internal successors, (1419), 1170 states have internal predecessors, (1419), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-19 04:56:03,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1181 states to 1181 states and 1440 transitions. [2021-11-19 04:56:03,360 INFO L78 Accepts]: Start accepts. Automaton has 1181 states and 1440 transitions. Word has length 38 [2021-11-19 04:56:03,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:56:03,360 INFO L470 AbstractCegarLoop]: Abstraction has 1181 states and 1440 transitions. [2021-11-19 04:56:03,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:56:03,361 INFO L276 IsEmpty]: Start isEmpty. Operand 1181 states and 1440 transitions. [2021-11-19 04:56:03,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-19 04:56:03,362 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:56:03,363 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:56:03,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 04:56:03,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:56:03,587 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr53REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-19 04:56:03,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:56:03,587 INFO L85 PathProgramCache]: Analyzing trace with hash 646849897, now seen corresponding path program 1 times [2021-11-19 04:56:03,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:56:03,588 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [315067314] [2021-11-19 04:56:03,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:56:03,588 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:56:03,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:56:03,589 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:56:03,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 04:56:03,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:56:03,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 04:56:03,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:56:03,849 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 [2021-11-19 04:56:04,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:56:04,170 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:56:04,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:56:04,790 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:56:04,790 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [315067314] [2021-11-19 04:56:04,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [315067314] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:56:04,791 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:56:04,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 04:56:04,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732270820] [2021-11-19 04:56:04,791 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:56:04,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 04:56:04,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:56:04,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 04:56:04,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 04:56:04,793 INFO L87 Difference]: Start difference. First operand 1181 states and 1440 transitions. Second operand has 6 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:56:13,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:56:13,791 INFO L93 Difference]: Finished difference Result 1787 states and 2194 transitions. [2021-11-19 04:56:13,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 04:56:13,792 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2021-11-19 04:56:13,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:56:13,801 INFO L225 Difference]: With dead ends: 1787 [2021-11-19 04:56:13,801 INFO L226 Difference]: Without dead ends: 1787 [2021-11-19 04:56:13,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-19 04:56:13,802 INFO L933 BasicCegarLoop]: 1191 mSDtfsCounter, 1255 mSDsluCounter, 1772 mSDsCounter, 0 mSdLazyCounter, 2006 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1256 SdHoareTripleChecker+Valid, 2963 SdHoareTripleChecker+Invalid, 2019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 2006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2021-11-19 04:56:13,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1256 Valid, 2963 Invalid, 2019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 2006 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2021-11-19 04:56:13,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1787 states. [2021-11-19 04:56:13,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1787 to 1177. [2021-11-19 04:56:13,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1177 states, 759 states have (on average 1.8590250329380764) internal successors, (1411), 1166 states have internal predecessors, (1411), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-19 04:56:13,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1432 transitions. [2021-11-19 04:56:13,841 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1432 transitions. Word has length 38 [2021-11-19 04:56:13,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:56:13,841 INFO L470 AbstractCegarLoop]: Abstraction has 1177 states and 1432 transitions. [2021-11-19 04:56:13,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:56:13,842 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1432 transitions. [2021-11-19 04:56:13,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-19 04:56:13,844 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:56:13,844 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:56:13,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 04:56:14,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:56:14,059 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr71REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-19 04:56:14,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:56:14,059 INFO L85 PathProgramCache]: Analyzing trace with hash -927296089, now seen corresponding path program 1 times [2021-11-19 04:56:14,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:56:14,062 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1336562545] [2021-11-19 04:56:14,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:56:14,062 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:56:14,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:56:14,063 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:56:14,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 04:56:14,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:56:14,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 04:56:14,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:56:14,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:56:14,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:56:14,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:56:14,718 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:56:14,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1336562545] [2021-11-19 04:56:14,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1336562545] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:56:14,719 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:56:14,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 04:56:14,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165650747] [2021-11-19 04:56:14,719 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:56:14,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 04:56:14,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:56:14,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 04:56:14,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:56:14,721 INFO L87 Difference]: Start difference. First operand 1177 states and 1432 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:56:14,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:56:14,791 INFO L93 Difference]: Finished difference Result 1165 states and 1412 transitions. [2021-11-19 04:56:14,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 04:56:14,792 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 56 [2021-11-19 04:56:14,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:56:14,801 INFO L225 Difference]: With dead ends: 1165 [2021-11-19 04:56:14,801 INFO L226 Difference]: Without dead ends: 1165 [2021-11-19 04:56:14,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:56:14,802 INFO L933 BasicCegarLoop]: 963 mSDtfsCounter, 911 mSDsluCounter, 1003 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 915 SdHoareTripleChecker+Valid, 1966 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 04:56:14,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [915 Valid, 1966 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 04:56:14,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1165 states. [2021-11-19 04:56:14,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1165 to 1165. [2021-11-19 04:56:14,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1165 states, 747 states have (on average 1.8621151271753682) internal successors, (1391), 1154 states have internal predecessors, (1391), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-19 04:56:14,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1165 states to 1165 states and 1412 transitions. [2021-11-19 04:56:14,838 INFO L78 Accepts]: Start accepts. Automaton has 1165 states and 1412 transitions. Word has length 56 [2021-11-19 04:56:14,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:56:14,839 INFO L470 AbstractCegarLoop]: Abstraction has 1165 states and 1412 transitions. [2021-11-19 04:56:14,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:56:14,839 INFO L276 IsEmpty]: Start isEmpty. Operand 1165 states and 1412 transitions. [2021-11-19 04:56:14,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-19 04:56:14,843 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:56:14,843 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:56:14,860 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 04:56:15,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:56:15,058 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr71REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-19 04:56:15,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:56:15,059 INFO L85 PathProgramCache]: Analyzing trace with hash 548320627, now seen corresponding path program 1 times [2021-11-19 04:56:15,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:56:15,059 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [689039704] [2021-11-19 04:56:15,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:56:15,060 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:56:15,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:56:15,061 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:56:15,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 04:56:15,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:56:15,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 04:56:15,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:56:15,602 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 [2021-11-19 04:56:15,614 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 [2021-11-19 04:56:16,482 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-19 04:56:16,483 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 27 [2021-11-19 04:56:16,491 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-19 04:56:16,492 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 20 [2021-11-19 04:56:16,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:56:16,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:56:22,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:56:22,108 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:56:22,108 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [689039704] [2021-11-19 04:56:22,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [689039704] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:56:22,109 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:56:22,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 04:56:22,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328623698] [2021-11-19 04:56:22,109 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:56:22,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 04:56:22,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:56:22,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 04:56:22,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-19 04:56:22,111 INFO L87 Difference]: Start difference. First operand 1165 states and 1412 transitions. Second operand has 6 states, 5 states have (on average 23.4) internal successors, (117), 6 states have internal predecessors, (117), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:56:29,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:56:29,372 INFO L93 Difference]: Finished difference Result 1776 states and 2121 transitions. [2021-11-19 04:56:29,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 04:56:29,373 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 23.4) internal successors, (117), 6 states have internal predecessors, (117), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 64 [2021-11-19 04:56:29,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:56:29,383 INFO L225 Difference]: With dead ends: 1776 [2021-11-19 04:56:29,383 INFO L226 Difference]: Without dead ends: 1776 [2021-11-19 04:56:29,383 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=19, Invalid=22, Unknown=1, NotChecked=0, Total=42 [2021-11-19 04:56:29,384 INFO L933 BasicCegarLoop]: 656 mSDtfsCounter, 1481 mSDsluCounter, 1226 mSDsCounter, 0 mSdLazyCounter, 1400 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1485 SdHoareTripleChecker+Valid, 1882 SdHoareTripleChecker+Invalid, 2932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1477 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:56:29,384 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1485 Valid, 1882 Invalid, 2932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1400 Invalid, 0 Unknown, 1477 Unchecked, 7.1s Time] [2021-11-19 04:56:29,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1776 states. [2021-11-19 04:56:29,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1776 to 1143. [2021-11-19 04:56:29,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1143 states, 757 states have (on average 1.8190224570673712) internal successors, (1377), 1132 states have internal predecessors, (1377), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-19 04:56:29,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 1398 transitions. [2021-11-19 04:56:29,419 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 1398 transitions. Word has length 64 [2021-11-19 04:56:29,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:56:29,419 INFO L470 AbstractCegarLoop]: Abstraction has 1143 states and 1398 transitions. [2021-11-19 04:56:29,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 23.4) internal successors, (117), 6 states have internal predecessors, (117), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:56:29,420 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 1398 transitions. [2021-11-19 04:56:29,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-19 04:56:29,421 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:56:29,421 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:56:29,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-19 04:56:29,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:56:29,636 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr73REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-19 04:56:29,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:56:29,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1344844684, now seen corresponding path program 1 times [2021-11-19 04:56:29,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:56:29,637 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [928511297] [2021-11-19 04:56:29,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:56:29,637 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:56:29,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:56:29,638 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:56:29,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-19 04:56:29,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:56:29,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 04:56:29,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:56:30,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:56:30,205 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:56:30,272 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-19 04:56:30,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:56:30,632 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:56:30,632 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [928511297] [2021-11-19 04:56:30,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [928511297] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:56:30,632 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:56:30,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 04:56:30,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438561830] [2021-11-19 04:56:30,633 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:56:30,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 04:56:30,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:56:30,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 04:56:30,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-19 04:56:30,635 INFO L87 Difference]: Start difference. First operand 1143 states and 1398 transitions. Second operand has 6 states, 5 states have (on average 24.2) internal successors, (121), 6 states have internal predecessors, (121), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:56:33,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:56:33,051 INFO L93 Difference]: Finished difference Result 1141 states and 1396 transitions. [2021-11-19 04:56:33,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 04:56:33,052 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.2) internal successors, (121), 6 states have internal predecessors, (121), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 66 [2021-11-19 04:56:33,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:56:33,059 INFO L225 Difference]: With dead ends: 1141 [2021-11-19 04:56:33,059 INFO L226 Difference]: Without dead ends: 1141 [2021-11-19 04:56:33,059 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-19 04:56:33,060 INFO L933 BasicCegarLoop]: 522 mSDtfsCounter, 882 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 885 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-19 04:56:33,061 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [885 Valid, 622 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-19 04:56:33,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1141 states. [2021-11-19 04:56:33,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1141 to 1141. [2021-11-19 04:56:33,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1141 states, 757 states have (on average 1.8163804491413473) internal successors, (1375), 1130 states have internal predecessors, (1375), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-19 04:56:33,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1141 states to 1141 states and 1396 transitions. [2021-11-19 04:56:33,106 INFO L78 Accepts]: Start accepts. Automaton has 1141 states and 1396 transitions. Word has length 66 [2021-11-19 04:56:33,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:56:33,106 INFO L470 AbstractCegarLoop]: Abstraction has 1141 states and 1396 transitions. [2021-11-19 04:56:33,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.2) internal successors, (121), 6 states have internal predecessors, (121), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:56:33,107 INFO L276 IsEmpty]: Start isEmpty. Operand 1141 states and 1396 transitions. [2021-11-19 04:56:33,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-19 04:56:33,108 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:56:33,108 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:56:33,126 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-19 04:56:33,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:56:33,327 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr76REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-19 04:56:33,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:56:33,328 INFO L85 PathProgramCache]: Analyzing trace with hash -812720204, now seen corresponding path program 1 times [2021-11-19 04:56:33,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:56:33,329 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1822105025] [2021-11-19 04:56:33,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:56:33,329 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:56:33,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:56:33,331 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:56:33,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-19 04:56:33,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:56:33,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 04:56:33,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:56:33,840 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 [2021-11-19 04:56:33,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2021-11-19 04:56:33,911 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-19 04:56:33,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:56:33,931 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:56:34,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:56:34,115 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:56:34,115 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1822105025] [2021-11-19 04:56:34,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1822105025] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:56:34,115 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:56:34,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 04:56:34,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739292081] [2021-11-19 04:56:34,115 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:56:34,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 04:56:34,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:56:34,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 04:56:34,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:56:34,116 INFO L87 Difference]: Start difference. First operand 1141 states and 1396 transitions. Second operand has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:56:37,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:56:37,657 INFO L93 Difference]: Finished difference Result 1140 states and 1395 transitions. [2021-11-19 04:56:37,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 04:56:37,658 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2021-11-19 04:56:37,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:56:37,664 INFO L225 Difference]: With dead ends: 1140 [2021-11-19 04:56:37,664 INFO L226 Difference]: Without dead ends: 1140 [2021-11-19 04:56:37,664 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 131 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-19 04:56:37,665 INFO L933 BasicCegarLoop]: 927 mSDtfsCounter, 4 mSDsluCounter, 1478 mSDsCounter, 0 mSdLazyCounter, 1308 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2405 SdHoareTripleChecker+Invalid, 1309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-11-19 04:56:37,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 2405 Invalid, 1309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1308 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-11-19 04:56:37,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1140 states. [2021-11-19 04:56:37,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1140 to 1140. [2021-11-19 04:56:37,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1140 states, 757 states have (on average 1.8150594451783355) internal successors, (1374), 1129 states have internal predecessors, (1374), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-19 04:56:37,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1140 states to 1140 states and 1395 transitions. [2021-11-19 04:56:37,709 INFO L78 Accepts]: Start accepts. Automaton has 1140 states and 1395 transitions. Word has length 69 [2021-11-19 04:56:37,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:56:37,710 INFO L470 AbstractCegarLoop]: Abstraction has 1140 states and 1395 transitions. [2021-11-19 04:56:37,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:56:37,710 INFO L276 IsEmpty]: Start isEmpty. Operand 1140 states and 1395 transitions. [2021-11-19 04:56:37,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-19 04:56:37,713 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:56:37,713 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:56:37,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-19 04:56:37,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:56:37,938 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr77REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-19 04:56:37,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:56:37,939 INFO L85 PathProgramCache]: Analyzing trace with hash -812720203, now seen corresponding path program 1 times [2021-11-19 04:56:37,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:56:37,940 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [178213927] [2021-11-19 04:56:37,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:56:37,940 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:56:37,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:56:37,942 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:56:37,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-19 04:56:38,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:56:38,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 04:56:38,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:56:38,443 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 [2021-11-19 04:56:38,478 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-19 04:56:38,488 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-19 04:56:38,584 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-11-19 04:56:38,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-19 04:56:38,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:56:38,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:56:39,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:56:39,012 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:56:39,012 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [178213927] [2021-11-19 04:56:39,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [178213927] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:56:39,012 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:56:39,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-19 04:56:39,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191459399] [2021-11-19 04:56:39,013 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:56:39,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 04:56:39,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:56:39,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 04:56:39,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 04:56:39,015 INFO L87 Difference]: Start difference. First operand 1140 states and 1395 transitions. Second operand has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 8 states have internal predecessors, (73), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:56:49,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:56:49,201 INFO L93 Difference]: Finished difference Result 1139 states and 1394 transitions. [2021-11-19 04:56:49,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 04:56:49,202 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 8 states have internal predecessors, (73), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2021-11-19 04:56:49,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:56:49,207 INFO L225 Difference]: With dead ends: 1139 [2021-11-19 04:56:49,207 INFO L226 Difference]: Without dead ends: 1139 [2021-11-19 04:56:49,208 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 04:56:49,208 INFO L933 BasicCegarLoop]: 927 mSDtfsCounter, 3 mSDsluCounter, 2509 mSDsCounter, 0 mSdLazyCounter, 2131 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 3436 SdHoareTripleChecker+Invalid, 2132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:56:49,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 3436 Invalid, 2132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2131 Invalid, 0 Unknown, 0 Unchecked, 10.1s Time] [2021-11-19 04:56:49,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2021-11-19 04:56:49,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1139. [2021-11-19 04:56:49,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1139 states, 756 states have (on average 1.816137566137566) internal successors, (1373), 1128 states have internal predecessors, (1373), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-19 04:56:49,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1394 transitions. [2021-11-19 04:56:49,231 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1394 transitions. Word has length 69 [2021-11-19 04:56:49,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:56:49,232 INFO L470 AbstractCegarLoop]: Abstraction has 1139 states and 1394 transitions. [2021-11-19 04:56:49,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 8 states have internal predecessors, (73), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:56:49,232 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1394 transitions. [2021-11-19 04:56:49,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-19 04:56:49,233 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:56:49,234 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:56:49,253 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-19 04:56:49,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:56:49,454 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-19 04:56:49,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:56:49,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1139648005, now seen corresponding path program 1 times [2021-11-19 04:56:49,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:56:49,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1374868741] [2021-11-19 04:56:49,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:56:49,455 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:56:49,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:56:49,457 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:56:49,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-19 04:56:49,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:56:49,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 04:56:49,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:56:49,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:56:49,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:56:50,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:56:50,118 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:56:50,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1374868741] [2021-11-19 04:56:50,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1374868741] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:56:50,118 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:56:50,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 04:56:50,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168163219] [2021-11-19 04:56:50,118 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:56:50,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 04:56:50,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:56:50,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 04:56:50,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 04:56:50,120 INFO L87 Difference]: Start difference. First operand 1139 states and 1394 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 04:56:50,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:56:50,221 INFO L93 Difference]: Finished difference Result 1149 states and 1407 transitions. [2021-11-19 04:56:50,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 04:56:50,222 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 77 [2021-11-19 04:56:50,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:56:50,229 INFO L225 Difference]: With dead ends: 1149 [2021-11-19 04:56:50,230 INFO L226 Difference]: Without dead ends: 1149 [2021-11-19 04:56:50,230 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-19 04:56:50,230 INFO L933 BasicCegarLoop]: 927 mSDtfsCounter, 11 mSDsluCounter, 1848 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2775 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:56:50,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 2775 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 04:56:50,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1149 states. [2021-11-19 04:56:50,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1149 to 1149. [2021-11-19 04:56:50,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1149 states, 764 states have (on average 1.8128272251308901) internal successors, (1385), 1137 states have internal predecessors, (1385), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (11), 6 states have call predecessors, (11), 10 states have call successors, (11) [2021-11-19 04:56:50,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1149 states to 1149 states and 1407 transitions. [2021-11-19 04:56:50,256 INFO L78 Accepts]: Start accepts. Automaton has 1149 states and 1407 transitions. Word has length 77 [2021-11-19 04:56:50,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:56:50,256 INFO L470 AbstractCegarLoop]: Abstraction has 1149 states and 1407 transitions. [2021-11-19 04:56:50,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 04:56:50,257 INFO L276 IsEmpty]: Start isEmpty. Operand 1149 states and 1407 transitions. [2021-11-19 04:56:50,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-19 04:56:50,258 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:56:50,258 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:56:50,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-19 04:56:50,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:56:50,472 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-19 04:56:50,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:56:50,473 INFO L85 PathProgramCache]: Analyzing trace with hash 2077664763, now seen corresponding path program 1 times [2021-11-19 04:56:50,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:56:50,473 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1040211171] [2021-11-19 04:56:50,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:56:50,473 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:56:50,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:56:50,474 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:56:50,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-19 04:56:50,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:56:50,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 04:56:50,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:56:50,960 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:56:50,961 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:56:51,279 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:56:51,280 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:56:51,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1040211171] [2021-11-19 04:56:51,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1040211171] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 04:56:51,280 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 04:56:51,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-11-19 04:56:51,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768832726] [2021-11-19 04:56:51,280 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 04:56:51,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 04:56:51,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:56:51,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 04:56:51,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-19 04:56:51,281 INFO L87 Difference]: Start difference. First operand 1149 states and 1407 transitions. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 04:56:51,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:56:51,706 INFO L93 Difference]: Finished difference Result 1163 states and 1425 transitions. [2021-11-19 04:56:51,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 04:56:51,707 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 79 [2021-11-19 04:56:51,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:56:51,713 INFO L225 Difference]: With dead ends: 1163 [2021-11-19 04:56:51,713 INFO L226 Difference]: Without dead ends: 1159 [2021-11-19 04:56:51,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=193, Unknown=0, NotChecked=0, Total=306 [2021-11-19 04:56:51,714 INFO L933 BasicCegarLoop]: 929 mSDtfsCounter, 21 mSDsluCounter, 5543 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 6472 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 04:56:51,714 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 6472 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 04:56:51,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2021-11-19 04:56:51,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 1155. [2021-11-19 04:56:51,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1155 states, 770 states have (on average 1.809090909090909) internal successors, (1393), 1143 states have internal predecessors, (1393), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (11), 6 states have call predecessors, (11), 10 states have call successors, (11) [2021-11-19 04:56:51,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 1415 transitions. [2021-11-19 04:56:51,737 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 1415 transitions. Word has length 79 [2021-11-19 04:56:51,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:56:51,738 INFO L470 AbstractCegarLoop]: Abstraction has 1155 states and 1415 transitions. [2021-11-19 04:56:51,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 04:56:51,738 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 1415 transitions. [2021-11-19 04:56:51,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-19 04:56:51,739 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:56:51,739 INFO L514 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:56:51,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-19 04:56:51,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:56:51,954 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-19 04:56:51,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:56:51,955 INFO L85 PathProgramCache]: Analyzing trace with hash -931774981, now seen corresponding path program 2 times [2021-11-19 04:56:51,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:56:51,956 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [997044199] [2021-11-19 04:56:51,956 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 04:56:51,956 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:56:51,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:56:51,957 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:56:51,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-19 04:56:52,482 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 04:56:52,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 04:56:52,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 04:56:52,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:56:52,750 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:56:52,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:56:53,304 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:56:53,304 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:56:53,305 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [997044199] [2021-11-19 04:56:53,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [997044199] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 04:56:53,305 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 04:56:53,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-11-19 04:56:53,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26843809] [2021-11-19 04:56:53,309 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 04:56:53,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-19 04:56:53,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:56:53,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-19 04:56:53,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-11-19 04:56:53,311 INFO L87 Difference]: Start difference. First operand 1155 states and 1415 transitions. Second operand has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 04:56:54,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:56:54,872 INFO L93 Difference]: Finished difference Result 1183 states and 1453 transitions. [2021-11-19 04:56:54,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-19 04:56:54,873 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 83 [2021-11-19 04:56:54,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:56:54,881 INFO L225 Difference]: With dead ends: 1183 [2021-11-19 04:56:54,881 INFO L226 Difference]: Without dead ends: 1179 [2021-11-19 04:56:54,888 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=457, Invalid=949, Unknown=0, NotChecked=0, Total=1406 [2021-11-19 04:56:54,889 INFO L933 BasicCegarLoop]: 933 mSDtfsCounter, 89 mSDsluCounter, 6507 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 7440 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 04:56:54,889 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 7440 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 04:56:54,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2021-11-19 04:56:54,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 1167. [2021-11-19 04:56:54,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1167 states, 782 states have (on average 1.8017902813299234) internal successors, (1409), 1155 states have internal predecessors, (1409), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (11), 6 states have call predecessors, (11), 10 states have call successors, (11) [2021-11-19 04:56:54,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1167 states to 1167 states and 1431 transitions. [2021-11-19 04:56:54,924 INFO L78 Accepts]: Start accepts. Automaton has 1167 states and 1431 transitions. Word has length 83 [2021-11-19 04:56:54,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:56:54,924 INFO L470 AbstractCegarLoop]: Abstraction has 1167 states and 1431 transitions. [2021-11-19 04:56:54,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 04:56:54,925 INFO L276 IsEmpty]: Start isEmpty. Operand 1167 states and 1431 transitions. [2021-11-19 04:56:54,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-19 04:56:54,926 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:56:54,926 INFO L514 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:56:54,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-19 04:56:55,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:56:55,143 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-19 04:56:55,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:56:55,144 INFO L85 PathProgramCache]: Analyzing trace with hash -351179269, now seen corresponding path program 3 times [2021-11-19 04:56:55,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:56:55,144 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1154154981] [2021-11-19 04:56:55,144 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 04:56:55,144 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:56:55,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:56:55,145 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:56:55,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-19 04:56:56,083 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-19 04:56:56,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 04:56:56,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-19 04:56:56,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:56:56,603 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:56:56,603 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:56:58,439 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:56:58,440 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:56:58,440 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1154154981] [2021-11-19 04:56:58,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1154154981] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 04:56:58,440 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 04:56:58,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2021-11-19 04:56:58,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031249995] [2021-11-19 04:56:58,441 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 04:56:58,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-19 04:56:58,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:56:58,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-19 04:56:58,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2021-11-19 04:56:58,443 INFO L87 Difference]: Start difference. First operand 1167 states and 1431 transitions. Second operand has 34 states, 34 states have (on average 3.0294117647058822) internal successors, (103), 34 states have internal predecessors, (103), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 04:57:07,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:57:07,374 INFO L93 Difference]: Finished difference Result 1223 states and 1515 transitions. [2021-11-19 04:57:07,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-19 04:57:07,376 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.0294117647058822) internal successors, (103), 34 states have internal predecessors, (103), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 91 [2021-11-19 04:57:07,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:57:07,383 INFO L225 Difference]: With dead ends: 1223 [2021-11-19 04:57:07,383 INFO L226 Difference]: Without dead ends: 1217 [2021-11-19 04:57:07,385 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=1377, Invalid=2783, Unknown=0, NotChecked=0, Total=4160 [2021-11-19 04:57:07,386 INFO L933 BasicCegarLoop]: 940 mSDtfsCounter, 216 mSDsluCounter, 14963 mSDsCounter, 0 mSdLazyCounter, 1253 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 15903 SdHoareTripleChecker+Invalid, 1436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 1253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-19 04:57:07,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [216 Valid, 15903 Invalid, 1436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 1253 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-11-19 04:57:07,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2021-11-19 04:57:07,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 1191. [2021-11-19 04:57:07,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1191 states, 806 states have (on average 1.7866004962779156) internal successors, (1440), 1179 states have internal predecessors, (1440), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (11), 6 states have call predecessors, (11), 10 states have call successors, (11) [2021-11-19 04:57:07,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 1462 transitions. [2021-11-19 04:57:07,415 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 1462 transitions. Word has length 91 [2021-11-19 04:57:07,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:57:07,416 INFO L470 AbstractCegarLoop]: Abstraction has 1191 states and 1462 transitions. [2021-11-19 04:57:07,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.0294117647058822) internal successors, (103), 34 states have internal predecessors, (103), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 04:57:07,416 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 1462 transitions. [2021-11-19 04:57:07,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-19 04:57:07,418 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:57:07,418 INFO L514 BasicCegarLoop]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:57:07,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-19 04:57:07,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:57:07,636 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-19 04:57:07,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:57:07,637 INFO L85 PathProgramCache]: Analyzing trace with hash 2109197819, now seen corresponding path program 4 times [2021-11-19 04:57:07,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:57:07,637 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1467067300] [2021-11-19 04:57:07,637 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-19 04:57:07,638 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:57:07,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:57:07,639 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:57:07,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-19 04:57:08,076 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-19 04:57:08,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 04:57:08,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-19 04:57:08,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:57:09,443 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:57:09,443 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:57:13,966 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:57:13,967 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:57:13,967 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1467067300] [2021-11-19 04:57:13,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1467067300] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 04:57:13,967 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 04:57:13,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 66 [2021-11-19 04:57:13,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093319972] [2021-11-19 04:57:13,967 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 04:57:13,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-19 04:57:13,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:57:13,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-19 04:57:13,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1000, Invalid=3290, Unknown=0, NotChecked=0, Total=4290 [2021-11-19 04:57:13,971 INFO L87 Difference]: Start difference. First operand 1191 states and 1462 transitions. Second operand has 66 states, 66 states have (on average 2.0454545454545454) internal successors, (135), 66 states have internal predecessors, (135), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 04:57:29,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:57:29,362 INFO L93 Difference]: Finished difference Result 1283 states and 1582 transitions. [2021-11-19 04:57:29,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-11-19 04:57:29,363 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.0454545454545454) internal successors, (135), 66 states have internal predecessors, (135), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 107 [2021-11-19 04:57:29,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:57:29,369 INFO L225 Difference]: With dead ends: 1283 [2021-11-19 04:57:29,369 INFO L226 Difference]: Without dead ends: 1279 [2021-11-19 04:57:29,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2313 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=4503, Invalid=14679, Unknown=0, NotChecked=0, Total=19182 [2021-11-19 04:57:29,378 INFO L933 BasicCegarLoop]: 956 mSDtfsCounter, 276 mSDsluCounter, 30438 mSDsCounter, 0 mSdLazyCounter, 4087 mSolverCounterSat, 529 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 31394 SdHoareTripleChecker+Invalid, 4616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 529 IncrementalHoareTripleChecker+Valid, 4087 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:57:29,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [276 Valid, 31394 Invalid, 4616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [529 Valid, 4087 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2021-11-19 04:57:29,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2021-11-19 04:57:29,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 1221. [2021-11-19 04:57:29,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1221 states, 836 states have (on average 1.777511961722488) internal successors, (1486), 1209 states have internal predecessors, (1486), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (11), 6 states have call predecessors, (11), 10 states have call successors, (11) [2021-11-19 04:57:29,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1221 states to 1221 states and 1508 transitions. [2021-11-19 04:57:29,416 INFO L78 Accepts]: Start accepts. Automaton has 1221 states and 1508 transitions. Word has length 107 [2021-11-19 04:57:29,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:57:29,417 INFO L470 AbstractCegarLoop]: Abstraction has 1221 states and 1508 transitions. [2021-11-19 04:57:29,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 2.0454545454545454) internal successors, (135), 66 states have internal predecessors, (135), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 04:57:29,418 INFO L276 IsEmpty]: Start isEmpty. Operand 1221 states and 1508 transitions. [2021-11-19 04:57:29,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-19 04:57:29,419 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:57:29,420 INFO L514 BasicCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:57:29,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-19 04:57:29,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:57:29,636 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-19 04:57:29,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:57:29,636 INFO L85 PathProgramCache]: Analyzing trace with hash -736370181, now seen corresponding path program 5 times [2021-11-19 04:57:29,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:57:29,637 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1545350620] [2021-11-19 04:57:29,637 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-19 04:57:29,637 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:57:29,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:57:29,638 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:57:29,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b7c6edc-429a-4a96-ac74-882c6125e7b1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-19 04:57:30,949 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2021-11-19 04:57:30,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 04:57:30,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 55 conjunts are in the unsatisfiable core [2021-11-19 04:57:30,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:57:31,014 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 [2021-11-19 04:57:31,250 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-19 04:57:31,251 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 22 treesize of output 29 [2021-11-19 04:57:31,295 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-11-19 04:57:31,459 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2021-11-19 05:08:43,550 WARN L227 SmtUtils]: Spent 6.70s on a formula simplification that was a NOOP. DAG size: 79 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)