./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY --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 bb48026e7f870ff561a4cdd394c24cb5edb1d0f2fc8e8ef2bffe0b7b8438fda4 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 07:22:03,142 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 07:22:03,145 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 07:22:03,199 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 07:22:03,200 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 07:22:03,204 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 07:22:03,206 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 07:22:03,210 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 07:22:03,212 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 07:22:03,218 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 07:22:03,219 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 07:22:03,220 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 07:22:03,221 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 07:22:03,223 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 07:22:03,225 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 07:22:03,229 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 07:22:03,231 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 07:22:03,233 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 07:22:03,235 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 07:22:03,243 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 07:22:03,245 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 07:22:03,247 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 07:22:03,250 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 07:22:03,251 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 07:22:03,259 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 07:22:03,260 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 07:22:03,260 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 07:22:03,262 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 07:22:03,263 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 07:22:03,265 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 07:22:03,265 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 07:22:03,266 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 07:22:03,268 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 07:22:03,269 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 07:22:03,271 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 07:22:03,271 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 07:22:03,272 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 07:22:03,272 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 07:22:03,272 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 07:22:03,273 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 07:22:03,274 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 07:22:03,275 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-07 07:22:03,314 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 07:22:03,314 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 07:22:03,315 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 07:22:03,315 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 07:22:03,317 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 07:22:03,317 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 07:22:03,317 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 07:22:03,318 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 07:22:03,318 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 07:22:03,318 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 07:22:03,319 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 07:22:03,319 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 07:22:03,320 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 07:22:03,320 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-07 07:22:03,320 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-07 07:22:03,320 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-07 07:22:03,320 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 07:22:03,321 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 07:22:03,321 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 07:22:03,321 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 07:22:03,321 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 07:22:03,321 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 07:22:03,322 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 07:22:03,322 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 07:22:03,322 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 07:22:03,322 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 07:22:03,323 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 07:22:03,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 07:22:03,323 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 07:22:03,325 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_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb48026e7f870ff561a4cdd394c24cb5edb1d0f2fc8e8ef2bffe0b7b8438fda4 [2021-11-07 07:22:03,610 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 07:22:03,646 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 07:22:03,648 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 07:22:03,649 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 07:22:03,650 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 07:22:03,651 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i [2021-11-07 07:22:03,726 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/data/abb7f3eb7/92c6b1b3bd504800b631eaa9347bb030/FLAG6bf3bd079 [2021-11-07 07:22:04,383 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 07:22:04,384 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i [2021-11-07 07:22:04,407 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/data/abb7f3eb7/92c6b1b3bd504800b631eaa9347bb030/FLAG6bf3bd079 [2021-11-07 07:22:04,599 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/data/abb7f3eb7/92c6b1b3bd504800b631eaa9347bb030 [2021-11-07 07:22:04,601 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 07:22:04,603 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-07 07:22:04,605 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 07:22:04,605 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 07:22:04,623 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 07:22:04,633 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:22:04" (1/1) ... [2021-11-07 07:22:04,634 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fdd63d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:04, skipping insertion in model container [2021-11-07 07:22:04,634 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:22:04" (1/1) ... [2021-11-07 07:22:04,643 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 07:22:04,744 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 07:22:05,525 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[44118,44131] [2021-11-07 07:22:05,550 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[44660,44673] [2021-11-07 07:22:05,714 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[56247,56260] [2021-11-07 07:22:05,716 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[56368,56381] [2021-11-07 07:22:05,730 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:22:05,756 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) [2021-11-07 07:22:05,758 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@21f90e57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:05, skipping insertion in model container [2021-11-07 07:22:05,758 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 07:22:05,759 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-11-07 07:22:05,762 INFO L168 Benchmark]: Toolchain (without parser) took 1157.04 ms. Allocated memory is still 92.3 MB. Free memory was 48.6 MB in the beginning and 53.5 MB in the end (delta: -4.9 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. [2021-11-07 07:22:05,763 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 92.3 MB. Free memory was 67.9 MB in the beginning and 67.8 MB in the end (delta: 50.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 07:22:05,765 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1153.86 ms. Allocated memory is still 92.3 MB. Free memory was 48.4 MB in the beginning and 53.5 MB in the end (delta: -5.1 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. [2021-11-07 07:22:05,767 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 92.3 MB. Free memory was 67.9 MB in the beginning and 67.8 MB in the end (delta: 50.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1153.86 ms. Allocated memory is still 92.3 MB. Free memory was 48.4 MB in the beginning and 53.5 MB in the end (delta: -5.1 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 990]: 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_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY --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 bb48026e7f870ff561a4cdd394c24cb5edb1d0f2fc8e8ef2bffe0b7b8438fda4 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 07:22:08,236 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 07:22:08,240 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 07:22:08,297 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 07:22:08,298 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 07:22:08,303 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 07:22:08,306 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 07:22:08,308 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 07:22:08,317 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 07:22:08,321 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 07:22:08,323 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 07:22:08,327 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 07:22:08,328 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 07:22:08,336 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 07:22:08,338 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 07:22:08,340 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 07:22:08,346 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 07:22:08,347 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 07:22:08,349 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 07:22:08,354 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 07:22:08,359 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 07:22:08,361 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 07:22:08,365 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 07:22:08,367 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 07:22:08,375 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 07:22:08,376 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 07:22:08,376 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 07:22:08,377 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 07:22:08,378 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 07:22:08,385 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 07:22:08,385 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 07:22:08,386 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 07:22:08,388 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 07:22:08,390 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 07:22:08,391 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 07:22:08,392 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 07:22:08,393 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 07:22:08,393 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 07:22:08,394 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 07:22:08,395 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 07:22:08,397 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 07:22:08,400 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-07 07:22:08,460 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 07:22:08,461 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 07:22:08,461 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 07:22:08,462 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 07:22:08,464 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 07:22:08,465 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 07:22:08,465 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 07:22:08,466 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 07:22:08,466 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 07:22:08,466 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 07:22:08,467 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 07:22:08,468 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 07:22:08,468 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 07:22:08,468 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-07 07:22:08,469 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-07 07:22:08,469 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-07 07:22:08,469 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 07:22:08,470 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 07:22:08,470 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 07:22:08,470 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 07:22:08,470 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 07:22:08,471 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 07:22:08,471 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 07:22:08,471 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 07:22:08,472 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 07:22:08,472 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 07:22:08,472 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 07:22:08,473 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 07:22:08,473 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-07 07:22:08,473 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 07:22:08,474 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 07:22:08,474 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 07:22:08,474 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_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb48026e7f870ff561a4cdd394c24cb5edb1d0f2fc8e8ef2bffe0b7b8438fda4 [2021-11-07 07:22:08,909 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 07:22:08,932 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 07:22:08,936 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 07:22:08,937 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 07:22:08,938 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 07:22:08,939 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i [2021-11-07 07:22:09,007 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/data/82ba3b85e/9549c50231984395994c4639d8a9dc22/FLAG667adaeb2 [2021-11-07 07:22:09,795 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 07:22:09,798 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i [2021-11-07 07:22:09,830 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/data/82ba3b85e/9549c50231984395994c4639d8a9dc22/FLAG667adaeb2 [2021-11-07 07:22:09,909 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/data/82ba3b85e/9549c50231984395994c4639d8a9dc22 [2021-11-07 07:22:09,914 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 07:22:09,917 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-07 07:22:09,918 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 07:22:09,919 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 07:22:09,923 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 07:22:09,923 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:22:09" (1/1) ... [2021-11-07 07:22:09,925 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34769ce5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:09, skipping insertion in model container [2021-11-07 07:22:09,926 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:22:09" (1/1) ... [2021-11-07 07:22:09,933 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 07:22:10,021 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 07:22:10,650 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[44118,44131] [2021-11-07 07:22:10,660 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[44660,44673] [2021-11-07 07:22:10,802 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[56247,56260] [2021-11-07 07:22:10,804 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[56368,56381] [2021-11-07 07:22:10,828 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:22:10,853 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 07:22:10,892 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 07:22:10,920 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[44118,44131] [2021-11-07 07:22:10,923 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[44660,44673] [2021-11-07 07:22:11,068 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[56247,56260] [2021-11-07 07:22:11,069 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[56368,56381] [2021-11-07 07:22:11,097 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:22:11,104 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 07:22:11,164 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[44118,44131] [2021-11-07 07:22:11,167 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[44660,44673] [2021-11-07 07:22:11,276 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[56247,56260] [2021-11-07 07:22:11,277 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[56368,56381] [2021-11-07 07:22:11,298 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:22:11,421 INFO L208 MainTranslator]: Completed translation [2021-11-07 07:22:11,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:11 WrapperNode [2021-11-07 07:22:11,422 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 07:22:11,424 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 07:22:11,424 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 07:22:11,425 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 07:22:11,438 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:11" (1/1) ... [2021-11-07 07:22:11,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:11" (1/1) ... [2021-11-07 07:22:11,530 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:11" (1/1) ... [2021-11-07 07:22:11,531 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:11" (1/1) ... [2021-11-07 07:22:11,640 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:11" (1/1) ... [2021-11-07 07:22:11,668 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:11" (1/1) ... [2021-11-07 07:22:11,678 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:11" (1/1) ... [2021-11-07 07:22:11,699 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 07:22:11,700 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 07:22:11,701 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 07:22:11,701 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 07:22:11,707 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:11" (1/1) ... [2021-11-07 07:22:11,715 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 07:22:11,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:11,740 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 07:22:11,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 07:22:11,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-07 07:22:11,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 07:22:11,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-11-07 07:22:11,793 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-07 07:22:11,793 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-07 07:22:11,794 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-07 07:22:11,794 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-07 07:22:11,794 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-07 07:22:11,794 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-07 07:22:11,794 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-07 07:22:11,795 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2021-11-07 07:22:11,795 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2021-11-07 07:22:11,795 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_memcmp [2021-11-07 07:22:11,795 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2021-11-07 07:22:11,795 INFO L138 BoogieDeclarations]: Found implementation of procedure real_malloc [2021-11-07 07:22:11,796 INFO L138 BoogieDeclarations]: Found implementation of procedure real_free [2021-11-07 07:22:11,796 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-07 07:22:11,796 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-07 07:22:11,796 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-11-07 07:22:11,796 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-11-07 07:22:11,797 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-11-07 07:22:11,797 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-11-07 07:22:11,797 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-07 07:22:11,797 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-11-07 07:22:11,797 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-11-07 07:22:11,798 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-07 07:22:11,798 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-11-07 07:22:11,798 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-11-07 07:22:11,798 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-11-07 07:22:11,798 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-07 07:22:11,799 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-11-07 07:22:11,799 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-11-07 07:22:11,799 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-11-07 07:22:11,799 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-11-07 07:22:11,799 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-11-07 07:22:11,800 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-11-07 07:22:11,800 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-11-07 07:22:11,800 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-07 07:22:11,800 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-11-07 07:22:11,800 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-11-07 07:22:11,801 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-11-07 07:22:11,801 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-11-07 07:22:11,801 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-11-07 07:22:11,801 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-11-07 07:22:11,801 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-11-07 07:22:11,801 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-11-07 07:22:11,802 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-11-07 07:22:11,802 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-11-07 07:22:11,802 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-11-07 07:22:11,802 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-11-07 07:22:11,802 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-11-07 07:22:11,803 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-11-07 07:22:11,803 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-11-07 07:22:11,803 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-11-07 07:22:11,803 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-11-07 07:22:11,803 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-11-07 07:22:11,804 INFO L130 BoogieDeclarations]: Found specification of procedure ffsl [2021-11-07 07:22:11,804 INFO L130 BoogieDeclarations]: Found specification of procedure ffsll [2021-11-07 07:22:11,804 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-11-07 07:22:11,804 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-11-07 07:22:11,804 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp_l [2021-11-07 07:22:11,805 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp_l [2021-11-07 07:22:11,805 INFO L130 BoogieDeclarations]: Found specification of procedure explicit_bzero [2021-11-07 07:22:11,805 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-11-07 07:22:11,805 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-11-07 07:22:11,805 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-11-07 07:22:11,806 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-11-07 07:22:11,806 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-11-07 07:22:11,806 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-11-07 07:22:11,806 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-07 07:22:11,806 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-07 07:22:11,806 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-07 07:22:11,807 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-07 07:22:11,807 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-07 07:22:11,807 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-07 07:22:11,807 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-07 07:22:11,807 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-07 07:22:11,808 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-07 07:22:11,808 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-07 07:22:11,808 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-07 07:22:11,808 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-07 07:22:11,808 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-07 07:22:11,808 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-07 07:22:11,809 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-07 07:22:11,809 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-07 07:22:11,809 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-07 07:22:11,809 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-07 07:22:11,809 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-07 07:22:11,809 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-07 07:22:11,810 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-07 07:22:11,810 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-07 07:22:11,810 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-07 07:22:11,810 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-07 07:22:11,810 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-07 07:22:11,811 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-07 07:22:11,811 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-07 07:22:11,811 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-07 07:22:11,811 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-07 07:22:11,811 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-07 07:22:11,812 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-07 07:22:11,812 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-07 07:22:11,812 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-07 07:22:11,812 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-07 07:22:11,812 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-07 07:22:11,812 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-07 07:22:11,813 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-07 07:22:11,813 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-07 07:22:11,813 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-07 07:22:11,813 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-07 07:22:11,813 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-07 07:22:11,814 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-07 07:22:11,814 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-07 07:22:11,814 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-07 07:22:11,814 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-07 07:22:11,814 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-07 07:22:11,815 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-07 07:22:11,815 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-07 07:22:11,815 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-07 07:22:11,815 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-07 07:22:11,815 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-07 07:22:11,816 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-07 07:22:11,816 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-07 07:22:11,816 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-07 07:22:11,816 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-07 07:22:11,816 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-07 07:22:11,817 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-07 07:22:11,817 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-07 07:22:11,817 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-07 07:22:11,817 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-07 07:22:11,817 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-07 07:22:11,818 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-07 07:22:11,818 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-07 07:22:11,818 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-07 07:22:11,818 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-07 07:22:11,818 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-07 07:22:11,819 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-07 07:22:11,819 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-07 07:22:11,819 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-07 07:22:11,819 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-07 07:22:11,819 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-07 07:22:11,820 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-07 07:22:11,820 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-07 07:22:11,820 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-07 07:22:11,820 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-07 07:22:11,820 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-07 07:22:11,820 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-07 07:22:11,821 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-07 07:22:11,821 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-07 07:22:11,821 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-07 07:22:11,821 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-07 07:22:11,821 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-07 07:22:11,822 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-07 07:22:11,822 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-07 07:22:11,822 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-07 07:22:11,822 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-07 07:22:11,822 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-07 07:22:11,823 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-07 07:22:11,823 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-07 07:22:11,823 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-07 07:22:11,823 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-07 07:22:11,823 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-07 07:22:11,824 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-07 07:22:11,824 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-07 07:22:11,824 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-07 07:22:11,824 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-07 07:22:11,824 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-07 07:22:11,824 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-07 07:22:11,825 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-07 07:22:11,825 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-07 07:22:11,825 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-07 07:22:11,826 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-07 07:22:11,826 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-07 07:22:11,826 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-07 07:22:11,826 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-07 07:22:11,826 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-07 07:22:11,827 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-07 07:22:11,827 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-07 07:22:11,827 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-07 07:22:11,827 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-07 07:22:11,827 INFO L130 BoogieDeclarations]: Found specification of procedure __underflow [2021-11-07 07:22:11,828 INFO L130 BoogieDeclarations]: Found specification of procedure __uflow [2021-11-07 07:22:11,828 INFO L130 BoogieDeclarations]: Found specification of procedure __overflow [2021-11-07 07:22:11,828 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_getc [2021-11-07 07:22:11,828 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_putc [2021-11-07 07:22:11,828 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_feof [2021-11-07 07:22:11,829 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ferror [2021-11-07 07:22:11,829 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_peekc_locked [2021-11-07 07:22:11,829 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_flockfile [2021-11-07 07:22:11,829 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_funlockfile [2021-11-07 07:22:11,829 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ftrylockfile [2021-11-07 07:22:11,829 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfscanf [2021-11-07 07:22:11,830 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfprintf [2021-11-07 07:22:11,830 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_padn [2021-11-07 07:22:11,830 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_sgetn [2021-11-07 07:22:11,830 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekoff [2021-11-07 07:22:11,830 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekpos [2021-11-07 07:22:11,831 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_free_backup_area [2021-11-07 07:22:11,831 INFO L130 BoogieDeclarations]: Found specification of procedure remove [2021-11-07 07:22:11,831 INFO L130 BoogieDeclarations]: Found specification of procedure rename [2021-11-07 07:22:11,831 INFO L130 BoogieDeclarations]: Found specification of procedure renameat [2021-11-07 07:22:11,831 INFO L130 BoogieDeclarations]: Found specification of procedure tmpfile [2021-11-07 07:22:11,832 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam [2021-11-07 07:22:11,832 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam_r [2021-11-07 07:22:11,832 INFO L130 BoogieDeclarations]: Found specification of procedure tempnam [2021-11-07 07:22:11,832 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2021-11-07 07:22:11,832 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2021-11-07 07:22:11,833 INFO L130 BoogieDeclarations]: Found specification of procedure fflush_unlocked [2021-11-07 07:22:11,833 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2021-11-07 07:22:11,833 INFO L130 BoogieDeclarations]: Found specification of procedure freopen [2021-11-07 07:22:11,833 INFO L130 BoogieDeclarations]: Found specification of procedure fdopen [2021-11-07 07:22:11,833 INFO L130 BoogieDeclarations]: Found specification of procedure fmemopen [2021-11-07 07:22:11,833 INFO L130 BoogieDeclarations]: Found specification of procedure open_memstream [2021-11-07 07:22:11,834 INFO L130 BoogieDeclarations]: Found specification of procedure setbuf [2021-11-07 07:22:11,834 INFO L130 BoogieDeclarations]: Found specification of procedure setvbuf [2021-11-07 07:22:11,834 INFO L130 BoogieDeclarations]: Found specification of procedure setbuffer [2021-11-07 07:22:11,834 INFO L130 BoogieDeclarations]: Found specification of procedure setlinebuf [2021-11-07 07:22:11,834 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2021-11-07 07:22:11,835 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-11-07 07:22:11,835 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2021-11-07 07:22:11,835 INFO L130 BoogieDeclarations]: Found specification of procedure vfprintf [2021-11-07 07:22:11,835 INFO L130 BoogieDeclarations]: Found specification of procedure vprintf [2021-11-07 07:22:11,835 INFO L130 BoogieDeclarations]: Found specification of procedure vsprintf [2021-11-07 07:22:11,835 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2021-11-07 07:22:11,836 INFO L130 BoogieDeclarations]: Found specification of procedure vsnprintf [2021-11-07 07:22:11,836 INFO L130 BoogieDeclarations]: Found specification of procedure vdprintf [2021-11-07 07:22:11,836 INFO L130 BoogieDeclarations]: Found specification of procedure dprintf [2021-11-07 07:22:11,836 INFO L130 BoogieDeclarations]: Found specification of procedure fscanf [2021-11-07 07:22:11,836 INFO L130 BoogieDeclarations]: Found specification of procedure scanf [2021-11-07 07:22:11,837 INFO L130 BoogieDeclarations]: Found specification of procedure sscanf [2021-11-07 07:22:11,837 INFO L130 BoogieDeclarations]: Found specification of procedure vfscanf [2021-11-07 07:22:11,837 INFO L130 BoogieDeclarations]: Found specification of procedure vscanf [2021-11-07 07:22:11,837 INFO L130 BoogieDeclarations]: Found specification of procedure vsscanf [2021-11-07 07:22:11,837 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2021-11-07 07:22:11,837 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2021-11-07 07:22:11,838 INFO L130 BoogieDeclarations]: Found specification of procedure getchar [2021-11-07 07:22:11,838 INFO L130 BoogieDeclarations]: Found specification of procedure getc_unlocked [2021-11-07 07:22:11,838 INFO L130 BoogieDeclarations]: Found specification of procedure getchar_unlocked [2021-11-07 07:22:11,838 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc_unlocked [2021-11-07 07:22:11,838 INFO L130 BoogieDeclarations]: Found specification of procedure fputc [2021-11-07 07:22:11,839 INFO L130 BoogieDeclarations]: Found specification of procedure putc [2021-11-07 07:22:11,839 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2021-11-07 07:22:11,839 INFO L130 BoogieDeclarations]: Found specification of procedure fputc_unlocked [2021-11-07 07:22:11,839 INFO L130 BoogieDeclarations]: Found specification of procedure putc_unlocked [2021-11-07 07:22:11,839 INFO L130 BoogieDeclarations]: Found specification of procedure putchar_unlocked [2021-11-07 07:22:11,839 INFO L130 BoogieDeclarations]: Found specification of procedure getw [2021-11-07 07:22:11,840 INFO L130 BoogieDeclarations]: Found specification of procedure putw [2021-11-07 07:22:11,840 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2021-11-07 07:22:11,840 INFO L130 BoogieDeclarations]: Found specification of procedure __getdelim [2021-11-07 07:22:11,840 INFO L130 BoogieDeclarations]: Found specification of procedure getdelim [2021-11-07 07:22:11,840 INFO L130 BoogieDeclarations]: Found specification of procedure getline [2021-11-07 07:22:11,841 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2021-11-07 07:22:11,841 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-07 07:22:11,841 INFO L130 BoogieDeclarations]: Found specification of procedure ungetc [2021-11-07 07:22:11,841 INFO L130 BoogieDeclarations]: Found specification of procedure fread [2021-11-07 07:22:11,841 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite [2021-11-07 07:22:11,842 INFO L130 BoogieDeclarations]: Found specification of procedure fread_unlocked [2021-11-07 07:22:11,842 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite_unlocked [2021-11-07 07:22:11,842 INFO L130 BoogieDeclarations]: Found specification of procedure fseek [2021-11-07 07:22:11,842 INFO L130 BoogieDeclarations]: Found specification of procedure ftell [2021-11-07 07:22:11,842 INFO L130 BoogieDeclarations]: Found specification of procedure rewind [2021-11-07 07:22:11,843 INFO L130 BoogieDeclarations]: Found specification of procedure fseeko [2021-11-07 07:22:11,843 INFO L130 BoogieDeclarations]: Found specification of procedure ftello [2021-11-07 07:22:11,843 INFO L130 BoogieDeclarations]: Found specification of procedure fgetpos [2021-11-07 07:22:11,843 INFO L130 BoogieDeclarations]: Found specification of procedure fsetpos [2021-11-07 07:22:11,843 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr [2021-11-07 07:22:11,843 INFO L130 BoogieDeclarations]: Found specification of procedure feof [2021-11-07 07:22:11,844 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2021-11-07 07:22:11,844 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr_unlocked [2021-11-07 07:22:11,844 INFO L130 BoogieDeclarations]: Found specification of procedure feof_unlocked [2021-11-07 07:22:11,844 INFO L130 BoogieDeclarations]: Found specification of procedure ferror_unlocked [2021-11-07 07:22:11,844 INFO L130 BoogieDeclarations]: Found specification of procedure perror [2021-11-07 07:22:11,845 INFO L130 BoogieDeclarations]: Found specification of procedure fileno [2021-11-07 07:22:11,845 INFO L130 BoogieDeclarations]: Found specification of procedure fileno_unlocked [2021-11-07 07:22:11,845 INFO L130 BoogieDeclarations]: Found specification of procedure popen [2021-11-07 07:22:11,845 INFO L130 BoogieDeclarations]: Found specification of procedure pclose [2021-11-07 07:22:11,845 INFO L130 BoogieDeclarations]: Found specification of procedure ctermid [2021-11-07 07:22:11,845 INFO L130 BoogieDeclarations]: Found specification of procedure flockfile [2021-11-07 07:22:11,846 INFO L130 BoogieDeclarations]: Found specification of procedure ftrylockfile [2021-11-07 07:22:11,846 INFO L130 BoogieDeclarations]: Found specification of procedure funlockfile [2021-11-07 07:22:11,846 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-07 07:22:11,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 07:22:11,846 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-07 07:22:11,847 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2021-11-07 07:22:11,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 07:22:11,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 07:22:11,847 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2021-11-07 07:22:11,847 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 07:22:11,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 07:22:11,848 INFO L130 BoogieDeclarations]: Found specification of procedure alt_memcmp [2021-11-07 07:22:11,848 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2021-11-07 07:22:11,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-07 07:22:11,848 INFO L130 BoogieDeclarations]: Found specification of procedure real_malloc [2021-11-07 07:22:11,848 INFO L130 BoogieDeclarations]: Found specification of procedure real_free [2021-11-07 07:22:11,849 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-07 07:22:11,849 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 07:22:11,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 07:22:11,849 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 07:22:11,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-07 07:22:11,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 07:22:11,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 07:22:11,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-11-07 07:22:11,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 07:22:12,590 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 07:22:18,371 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 07:22:18,372 INFO L299 CfgBuilder]: Removed 72 assume(true) statements. [2021-11-07 07:22:18,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:22:18 BoogieIcfgContainer [2021-11-07 07:22:18,377 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 07:22:18,379 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 07:22:18,379 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 07:22:18,382 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 07:22:18,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 07:22:09" (1/3) ... [2021-11-07 07:22:18,384 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66da56cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:22:18, skipping insertion in model container [2021-11-07 07:22:18,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:11" (2/3) ... [2021-11-07 07:22:18,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66da56cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:22:18, skipping insertion in model container [2021-11-07 07:22:18,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:22:18" (3/3) ... [2021-11-07 07:22:18,389 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test6-2.i [2021-11-07 07:22:18,395 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 07:22:18,396 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 634 error locations. [2021-11-07 07:22:18,452 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 07:22:18,467 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 [2021-11-07 07:22:18,467 INFO L340 AbstractCegarLoop]: Starting to check reachability of 634 error locations. [2021-11-07 07:22:18,541 INFO L276 IsEmpty]: Start isEmpty. Operand has 1296 states, 631 states have (on average 2.2329635499207607) internal successors, (1409), 1265 states have internal predecessors, (1409), 22 states have call successors, (22), 10 states have call predecessors, (22), 10 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-07 07:22:18,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-07 07:22:18,548 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:18,548 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:22:18,549 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [alt_bzeroErr0REQUIRES_VIOLATION, alt_bzeroErr1REQUIRES_VIOLATION, real_freeErr0ASSERT_VIOLATIONMEMORY_FREE, real_freeErr1ASSERT_VIOLATIONMEMORY_FREE (and 630 more)] === [2021-11-07 07:22:18,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:18,555 INFO L85 PathProgramCache]: Analyzing trace with hash 2029925141, now seen corresponding path program 1 times [2021-11-07 07:22:18,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:22:18,567 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [739428188] [2021-11-07 07:22:18,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:18,568 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:22:18,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:22:18,572 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:22:18,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 07:22:18,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:18,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 07:22:18,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:19,004 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 [2021-11-07 07:22:19,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:19,016 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:22:19,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:19,056 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:22:19,056 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [739428188] [2021-11-07 07:22:19,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [739428188] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:22:19,057 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:22:19,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 07:22:19,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240410558] [2021-11-07 07:22:19,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:22:19,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:22:19,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:22:19,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:22:19,084 INFO L87 Difference]: Start difference. First operand has 1296 states, 631 states have (on average 2.2329635499207607) internal successors, (1409), 1265 states have internal predecessors, (1409), 22 states have call successors, (22), 10 states have call predecessors, (22), 10 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:22:22,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:22,048 INFO L93 Difference]: Finished difference Result 1548 states and 1639 transitions. [2021-11-07 07:22:22,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:22:22,056 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 [2021-11-07 07:22:22,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:22,083 INFO L225 Difference]: With dead ends: 1548 [2021-11-07 07:22:22,084 INFO L226 Difference]: Without dead ends: 1545 [2021-11-07 07:22:22,087 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:22:22,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1545 states. [2021-11-07 07:22:22,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1545 to 1316. [2021-11-07 07:22:22,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1316 states, 665 states have (on average 2.0977443609022557) internal successors, (1395), 1286 states have internal predecessors, (1395), 21 states have call successors, (21), 10 states have call predecessors, (21), 9 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-07 07:22:22,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1316 states to 1316 states and 1436 transitions. [2021-11-07 07:22:22,225 INFO L78 Accepts]: Start accepts. Automaton has 1316 states and 1436 transitions. Word has length 7 [2021-11-07 07:22:22,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:22,226 INFO L470 AbstractCegarLoop]: Abstraction has 1316 states and 1436 transitions. [2021-11-07 07:22:22,227 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) [2021-11-07 07:22:22,228 INFO L276 IsEmpty]: Start isEmpty. Operand 1316 states and 1436 transitions. [2021-11-07 07:22:22,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-07 07:22:22,228 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:22,230 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:22:22,251 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:22,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:22:22,442 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [alt_bzeroErr0REQUIRES_VIOLATION, alt_bzeroErr1REQUIRES_VIOLATION, real_freeErr0ASSERT_VIOLATIONMEMORY_FREE, real_freeErr1ASSERT_VIOLATIONMEMORY_FREE (and 630 more)] === [2021-11-07 07:22:22,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:22,443 INFO L85 PathProgramCache]: Analyzing trace with hash 2029925142, now seen corresponding path program 1 times [2021-11-07 07:22:22,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:22:22,444 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [632611722] [2021-11-07 07:22:22,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:22,444 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:22:22,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:22:22,445 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:22:22,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 07:22:22,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:22,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 07:22:22,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:22,773 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 [2021-11-07 07:22:22,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:22,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:22:22,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:22,865 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:22:22,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [632611722] [2021-11-07 07:22:22,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [632611722] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:22:22,866 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:22:22,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-07 07:22:22,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724174496] [2021-11-07 07:22:22,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:22:22,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:22:22,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:22:22,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:22:22,869 INFO L87 Difference]: Start difference. First operand 1316 states and 1436 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) [2021-11-07 07:22:29,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:29,606 INFO L93 Difference]: Finished difference Result 1933 states and 2062 transitions. [2021-11-07 07:22:29,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:22:29,607 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 [2021-11-07 07:22:29,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:29,618 INFO L225 Difference]: With dead ends: 1933 [2021-11-07 07:22:29,618 INFO L226 Difference]: Without dead ends: 1933 [2021-11-07 07:22:29,619 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:22:29,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1933 states. [2021-11-07 07:22:29,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1933 to 1307. [2021-11-07 07:22:29,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1307 states, 665 states have (on average 2.082706766917293) internal successors, (1385), 1277 states have internal predecessors, (1385), 21 states have call successors, (21), 10 states have call predecessors, (21), 9 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-07 07:22:29,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1307 states to 1307 states and 1426 transitions. [2021-11-07 07:22:29,662 INFO L78 Accepts]: Start accepts. Automaton has 1307 states and 1426 transitions. Word has length 7 [2021-11-07 07:22:29,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:29,663 INFO L470 AbstractCegarLoop]: Abstraction has 1307 states and 1426 transitions. [2021-11-07 07:22:29,663 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) [2021-11-07 07:22:29,663 INFO L276 IsEmpty]: Start isEmpty. Operand 1307 states and 1426 transitions. [2021-11-07 07:22:29,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-07 07:22:29,664 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:29,664 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:22:29,690 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-07 07:22:29,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:22:29,877 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr513ASSERT_VIOLATIONMEMORY_LEAK === [alt_bzeroErr0REQUIRES_VIOLATION, alt_bzeroErr1REQUIRES_VIOLATION, real_freeErr0ASSERT_VIOLATIONMEMORY_FREE, real_freeErr1ASSERT_VIOLATIONMEMORY_FREE (and 630 more)] === [2021-11-07 07:22:29,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:29,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1872919129, now seen corresponding path program 1 times [2021-11-07 07:22:29,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:22:29,879 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [99981366] [2021-11-07 07:22:29,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:29,879 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:22:29,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:22:29,880 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:22:29,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 07:22:30,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:30,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 07:22:30,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:30,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:30,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:22:30,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:30,387 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:22:30,387 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [99981366] [2021-11-07 07:22:30,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [99981366] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:22:30,388 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:22:30,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 07:22:30,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003497568] [2021-11-07 07:22:30,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:22:30,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:22:30,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:22:30,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:22:30,390 INFO L87 Difference]: Start difference. First operand 1307 states and 1426 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) [2021-11-07 07:22:31,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:31,819 INFO L93 Difference]: Finished difference Result 1962 states and 2133 transitions. [2021-11-07 07:22:31,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 07:22:31,819 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 [2021-11-07 07:22:31,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:31,831 INFO L225 Difference]: With dead ends: 1962 [2021-11-07 07:22:31,831 INFO L226 Difference]: Without dead ends: 1962 [2021-11-07 07:22:31,832 INFO L786 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 [2021-11-07 07:22:31,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1962 states. [2021-11-07 07:22:31,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1962 to 1555. [2021-11-07 07:22:31,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1555 states, 908 states have (on average 2.039647577092511) internal successors, (1852), 1520 states have internal predecessors, (1852), 26 states have call successors, (26), 10 states have call predecessors, (26), 9 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2021-11-07 07:22:31,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1555 states to 1555 states and 1903 transitions. [2021-11-07 07:22:31,883 INFO L78 Accepts]: Start accepts. Automaton has 1555 states and 1903 transitions. Word has length 15 [2021-11-07 07:22:31,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:31,883 INFO L470 AbstractCegarLoop]: Abstraction has 1555 states and 1903 transitions. [2021-11-07 07:22:31,883 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) [2021-11-07 07:22:31,884 INFO L276 IsEmpty]: Start isEmpty. Operand 1555 states and 1903 transitions. [2021-11-07 07:22:31,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-07 07:22:31,884 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:31,885 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:22:31,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:32,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:22:32,097 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr4REQUIRES_VIOLATION === [alt_bzeroErr0REQUIRES_VIOLATION, alt_bzeroErr1REQUIRES_VIOLATION, real_freeErr0ASSERT_VIOLATIONMEMORY_FREE, real_freeErr1ASSERT_VIOLATIONMEMORY_FREE (and 630 more)] === [2021-11-07 07:22:32,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:32,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1600449588, now seen corresponding path program 1 times [2021-11-07 07:22:32,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:22:32,098 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [563032518] [2021-11-07 07:22:32,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:32,099 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:22:32,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:22:32,100 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:22:32,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 07:22:32,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:32,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 07:22:32,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:32,418 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 [2021-11-07 07:22:32,566 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-07 07:22:32,566 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 15 treesize of output 20 [2021-11-07 07:22:32,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:32,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:22:32,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:32,829 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:22:32,829 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [563032518] [2021-11-07 07:22:32,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [563032518] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:22:32,829 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:22:32,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 3] imperfect sequences [] total 5 [2021-11-07 07:22:32,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036062463] [2021-11-07 07:22:32,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 07:22:32,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:22:32,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 07:22:32,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 07:22:32,832 INFO L87 Difference]: Start difference. First operand 1555 states and 1903 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-07 07:22:46,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:46,860 INFO L93 Difference]: Finished difference Result 3313 states and 3969 transitions. [2021-11-07 07:22:46,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 07:22:46,861 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 16 [2021-11-07 07:22:46,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:46,883 INFO L225 Difference]: With dead ends: 3313 [2021-11-07 07:22:46,883 INFO L226 Difference]: Without dead ends: 3313 [2021-11-07 07:22:46,884 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-07 07:22:46,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3313 states. [2021-11-07 07:22:46,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3313 to 1559. [2021-11-07 07:22:46,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1559 states, 913 states have (on average 2.032858707557503) internal successors, (1856), 1524 states have internal predecessors, (1856), 26 states have call successors, (26), 10 states have call predecessors, (26), 9 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2021-11-07 07:22:46,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1559 states to 1559 states and 1907 transitions. [2021-11-07 07:22:46,952 INFO L78 Accepts]: Start accepts. Automaton has 1559 states and 1907 transitions. Word has length 16 [2021-11-07 07:22:46,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:46,952 INFO L470 AbstractCegarLoop]: Abstraction has 1559 states and 1907 transitions. [2021-11-07 07:22:46,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-07 07:22:46,953 INFO L276 IsEmpty]: Start isEmpty. Operand 1559 states and 1907 transitions. [2021-11-07 07:22:46,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-07 07:22:46,954 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:46,954 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:22:46,969 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-07 07:22:47,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:22:47,169 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr5REQUIRES_VIOLATION === [alt_bzeroErr0REQUIRES_VIOLATION, alt_bzeroErr1REQUIRES_VIOLATION, real_freeErr0ASSERT_VIOLATIONMEMORY_FREE, real_freeErr1ASSERT_VIOLATIONMEMORY_FREE (and 630 more)] === [2021-11-07 07:22:47,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:47,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1600449589, now seen corresponding path program 1 times [2021-11-07 07:22:47,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:22:47,171 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1925328571] [2021-11-07 07:22:47,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:47,171 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:22:47,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:22:47,177 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:22:47,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 07:22:47,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:47,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 07:22:47,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:47,520 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 [2021-11-07 07:22:47,531 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 [2021-11-07 07:22:51,854 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-07 07:22:51,854 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 33 treesize of output 35 [2021-11-07 07:22:51,873 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-07 07:22:51,873 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 27 treesize of output 27 [2021-11-07 07:22:51,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:51,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:22:59,130 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_main_~#i~0.base_BEFORE_CALL_4| (_ BitVec 32)) (|v_main_~#i~0.offset_BEFORE_CALL_2| (_ BitVec 32)) (|v_real_malloc_#res.base_9| (_ BitVec 32))) (or (exists ((|v_real_malloc_#res.base_8| (_ BitVec 32))) (and (or (not (bvule |v_main_~#i~0.offset_BEFORE_CALL_2| (bvadd (_ bv4 32) |v_main_~#i~0.offset_BEFORE_CALL_2|))) (exists ((v_real_malloc_~n_8 (_ BitVec 32))) (not (bvule (bvadd (_ bv4 32) |v_main_~#i~0.offset_BEFORE_CALL_2|) (select (store |c_old(#length)| |v_real_malloc_#res.base_8| v_real_malloc_~n_8) |v_main_~#i~0.base_BEFORE_CALL_4|))))) (= (_ bv0 1) (select |c_old(#valid)| |v_real_malloc_#res.base_8|)))) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_real_malloc_#res.base_9|)))) (and (forall ((v_real_malloc_~n_9 (_ BitVec 32))) (bvule (bvadd (_ bv4 32) |v_main_~#i~0.offset_BEFORE_CALL_2|) (select (store |c_#length| |v_real_malloc_#res.base_9| v_real_malloc_~n_9) |v_main_~#i~0.base_BEFORE_CALL_4|))) (bvule |v_main_~#i~0.offset_BEFORE_CALL_2| (bvadd (_ bv4 32) |v_main_~#i~0.offset_BEFORE_CALL_2|))))) is different from true [2021-11-07 07:22:59,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:59,355 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:22:59,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1925328571] [2021-11-07 07:22:59,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1925328571] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:22:59,356 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:22:59,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-07 07:22:59,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868924877] [2021-11-07 07:22:59,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 07:22:59,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:22:59,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 07:22:59,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=51, Unknown=3, NotChecked=14, Total=90 [2021-11-07 07:22:59,359 INFO L87 Difference]: Start difference. First operand 1559 states and 1907 transitions. Second operand has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-07 07:29:32,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:29:32,437 INFO L93 Difference]: Finished difference Result 2900 states and 3381 transitions. [2021-11-07 07:29:32,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-07 07:29:32,438 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 16 [2021-11-07 07:29:32,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:29:32,454 INFO L225 Difference]: With dead ends: 2900 [2021-11-07 07:29:32,455 INFO L226 Difference]: Without dead ends: 2900 [2021-11-07 07:29:32,455 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 17.2s TimeCoverageRelationStatistics Valid=53, Invalid=128, Unknown=5, NotChecked=24, Total=210 [2021-11-07 07:29:32,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2900 states. [2021-11-07 07:29:32,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2900 to 1678. [2021-11-07 07:29:32,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1678 states, 1030 states have (on average 2.066019417475728) internal successors, (2128), 1640 states have internal predecessors, (2128), 29 states have call successors, (29), 10 states have call predecessors, (29), 9 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-07 07:29:32,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1678 states to 1678 states and 2185 transitions. [2021-11-07 07:29:32,525 INFO L78 Accepts]: Start accepts. Automaton has 1678 states and 2185 transitions. Word has length 16 [2021-11-07 07:29:32,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:29:32,526 INFO L470 AbstractCegarLoop]: Abstraction has 1678 states and 2185 transitions. [2021-11-07 07:29:32,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-07 07:29:32,526 INFO L276 IsEmpty]: Start isEmpty. Operand 1678 states and 2185 transitions. [2021-11-07 07:29:32,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-07 07:29:32,527 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:29:32,528 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:29:32,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 07:29:32,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:29:32,743 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr6REQUIRES_VIOLATION === [alt_bzeroErr0REQUIRES_VIOLATION, alt_bzeroErr1REQUIRES_VIOLATION, real_freeErr0ASSERT_VIOLATIONMEMORY_FREE, real_freeErr1ASSERT_VIOLATIONMEMORY_FREE (and 630 more)] === [2021-11-07 07:29:32,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:29:32,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1925670236, now seen corresponding path program 1 times [2021-11-07 07:29:32,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:29:32,744 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [582942155] [2021-11-07 07:29:32,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:29:32,744 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:29:32,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:29:32,745 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:29:32,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 07:29:33,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:29:33,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 07:29:33,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:29:33,091 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 [2021-11-07 07:29:33,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:29:33,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:29:33,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:29:33,307 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:29:33,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [582942155] [2021-11-07 07:29:33,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [582942155] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:29:33,308 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:29:33,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 07:29:33,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076689229] [2021-11-07 07:29:33,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 07:29:33,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:29:33,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 07:29:33,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:29:33,310 INFO L87 Difference]: Start difference. First operand 1678 states and 2185 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-07 07:29:40,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:29:40,650 INFO L93 Difference]: Finished difference Result 2079 states and 2681 transitions. [2021-11-07 07:29:40,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 07:29:40,659 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2021-11-07 07:29:40,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:29:40,670 INFO L225 Difference]: With dead ends: 2079 [2021-11-07 07:29:40,670 INFO L226 Difference]: Without dead ends: 2079 [2021-11-07 07:29:40,671 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:29:40,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2079 states. [2021-11-07 07:29:40,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2079 to 1633. [2021-11-07 07:29:40,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1633 states, 1030 states have (on average 1.992233009708738) internal successors, (2052), 1595 states have internal predecessors, (2052), 29 states have call successors, (29), 10 states have call predecessors, (29), 9 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-07 07:29:40,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1633 states to 1633 states and 2109 transitions. [2021-11-07 07:29:40,729 INFO L78 Accepts]: Start accepts. Automaton has 1633 states and 2109 transitions. Word has length 17 [2021-11-07 07:29:40,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:29:40,730 INFO L470 AbstractCegarLoop]: Abstraction has 1633 states and 2109 transitions. [2021-11-07 07:29:40,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-07 07:29:40,730 INFO L276 IsEmpty]: Start isEmpty. Operand 1633 states and 2109 transitions. [2021-11-07 07:29:40,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-07 07:29:40,731 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:29:40,731 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:29:40,751 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 07:29:40,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:29:40,951 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr7REQUIRES_VIOLATION === [alt_bzeroErr0REQUIRES_VIOLATION, alt_bzeroErr1REQUIRES_VIOLATION, real_freeErr0ASSERT_VIOLATIONMEMORY_FREE, real_freeErr1ASSERT_VIOLATIONMEMORY_FREE (and 630 more)] === [2021-11-07 07:29:40,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:29:40,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1925670235, now seen corresponding path program 1 times [2021-11-07 07:29:40,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:29:40,952 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1781951607] [2021-11-07 07:29:40,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:29:40,953 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:29:40,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:29:40,957 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:29:40,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 07:29:41,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:29:41,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 07:29:41,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:29:41,435 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 [2021-11-07 07:29:41,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:29:41,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:29:42,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:29:42,120 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:29:42,121 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1781951607] [2021-11-07 07:29:42,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1781951607] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:29:42,121 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:29:42,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-07 07:29:42,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441747699] [2021-11-07 07:29:42,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 07:29:42,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:29:42,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 07:29:42,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 07:29:42,123 INFO L87 Difference]: Start difference. First operand 1633 states and 2109 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-07 07:30:03,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:30:03,510 INFO L93 Difference]: Finished difference Result 2196 states and 2815 transitions. [2021-11-07 07:30:03,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 07:30:03,512 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 17 [2021-11-07 07:30:03,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:30:03,523 INFO L225 Difference]: With dead ends: 2196 [2021-11-07 07:30:03,523 INFO L226 Difference]: Without dead ends: 2196 [2021-11-07 07:30:03,523 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 07:30:03,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2196 states. [2021-11-07 07:30:03,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2196 to 1623. [2021-11-07 07:30:03,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1623 states, 1030 states have (on average 1.974757281553398) internal successors, (2034), 1585 states have internal predecessors, (2034), 29 states have call successors, (29), 10 states have call predecessors, (29), 9 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-07 07:30:03,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1623 states to 1623 states and 2091 transitions. [2021-11-07 07:30:03,574 INFO L78 Accepts]: Start accepts. Automaton has 1623 states and 2091 transitions. Word has length 17 [2021-11-07 07:30:03,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:30:03,575 INFO L470 AbstractCegarLoop]: Abstraction has 1623 states and 2091 transitions. [2021-11-07 07:30:03,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-07 07:30:03,575 INFO L276 IsEmpty]: Start isEmpty. Operand 1623 states and 2091 transitions. [2021-11-07 07:30:03,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-07 07:30:03,576 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:30:03,576 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:30:03,600 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 07:30:03,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:30:03,792 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [alt_bzeroErr0REQUIRES_VIOLATION, alt_bzeroErr1REQUIRES_VIOLATION, real_freeErr0ASSERT_VIOLATIONMEMORY_FREE, real_freeErr1ASSERT_VIOLATIONMEMORY_FREE (and 630 more)] === [2021-11-07 07:30:03,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:30:03,793 INFO L85 PathProgramCache]: Analyzing trace with hash 222632638, now seen corresponding path program 1 times [2021-11-07 07:30:03,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:30:03,793 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1664218360] [2021-11-07 07:30:03,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:30:03,794 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:30:03,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:30:03,795 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:30:03,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 07:30:04,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:30:04,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 07:30:04,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:30:04,236 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 07:30:04,237 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 07:30:04,237 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 07:30:04,318 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-07 07:30:04,318 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 [2021-11-07 07:30:04,409 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-07 07:30:04,410 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 [2021-11-07 07:30:04,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:30:04,461 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:30:04,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:30:04,587 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:30:04,587 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1664218360] [2021-11-07 07:30:04,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1664218360] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:30:04,587 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:30:04,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 07:30:04,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566913807] [2021-11-07 07:30:04,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 07:30:04,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:30:04,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 07:30:04,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 07:30:04,589 INFO L87 Difference]: Start difference. First operand 1623 states and 2091 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:30:08,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:30:08,437 INFO L93 Difference]: Finished difference Result 2117 states and 2661 transitions. [2021-11-07 07:30:08,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:30:08,439 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-11-07 07:30:08,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:30:08,455 INFO L225 Difference]: With dead ends: 2117 [2021-11-07 07:30:08,456 INFO L226 Difference]: Without dead ends: 2117 [2021-11-07 07:30:08,456 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 07:30:08,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2117 states. [2021-11-07 07:30:08,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2117 to 1622. [2021-11-07 07:30:08,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1622 states, 1029 states have (on average 1.9747327502429544) internal successors, (2032), 1584 states have internal predecessors, (2032), 29 states have call successors, (29), 10 states have call predecessors, (29), 9 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-07 07:30:08,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1622 states to 1622 states and 2089 transitions. [2021-11-07 07:30:08,522 INFO L78 Accepts]: Start accepts. Automaton has 1622 states and 2089 transitions. Word has length 18 [2021-11-07 07:30:08,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:30:08,522 INFO L470 AbstractCegarLoop]: Abstraction has 1622 states and 2089 transitions. [2021-11-07 07:30:08,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:30:08,523 INFO L276 IsEmpty]: Start isEmpty. Operand 1622 states and 2089 transitions. [2021-11-07 07:30:08,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-07 07:30:08,526 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:30:08,527 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:30:08,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 07:30:08,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:30:08,744 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr14REQUIRES_VIOLATION === [alt_bzeroErr0REQUIRES_VIOLATION, alt_bzeroErr1REQUIRES_VIOLATION, real_freeErr0ASSERT_VIOLATIONMEMORY_FREE, real_freeErr1ASSERT_VIOLATIONMEMORY_FREE (and 630 more)] === [2021-11-07 07:30:08,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:30:08,744 INFO L85 PathProgramCache]: Analyzing trace with hash -84121520, now seen corresponding path program 1 times [2021-11-07 07:30:08,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:30:08,745 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1189946576] [2021-11-07 07:30:08,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:30:08,745 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:30:08,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:30:08,746 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:30:08,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 07:30:09,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:30:09,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 07:30:09,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:30:09,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:30:09,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:30:09,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:30:09,351 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:30:09,351 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1189946576] [2021-11-07 07:30:09,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1189946576] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:30:09,351 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:30:09,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 07:30:09,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013905333] [2021-11-07 07:30:09,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:30:09,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:30:09,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:30:09,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:30:09,353 INFO L87 Difference]: Start difference. First operand 1622 states and 2089 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-07 07:30:09,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:30:09,440 INFO L93 Difference]: Finished difference Result 1562 states and 2003 transitions. [2021-11-07 07:30:09,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:30:09,441 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 27 [2021-11-07 07:30:09,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:30:09,449 INFO L225 Difference]: With dead ends: 1562 [2021-11-07 07:30:09,449 INFO L226 Difference]: Without dead ends: 1562 [2021-11-07 07:30:09,450 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:30:09,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1562 states. [2021-11-07 07:30:09,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1562 to 1562. [2021-11-07 07:30:09,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1562 states, 993 states have (on average 1.959718026183283) internal successors, (1946), 1524 states have internal predecessors, (1946), 29 states have call successors, (29), 10 states have call predecessors, (29), 9 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-07 07:30:09,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1562 states to 1562 states and 2003 transitions. [2021-11-07 07:30:09,492 INFO L78 Accepts]: Start accepts. Automaton has 1562 states and 2003 transitions. Word has length 27 [2021-11-07 07:30:09,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:30:09,493 INFO L470 AbstractCegarLoop]: Abstraction has 1562 states and 2003 transitions. [2021-11-07 07:30:09,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-07 07:30:09,493 INFO L276 IsEmpty]: Start isEmpty. Operand 1562 states and 2003 transitions. [2021-11-07 07:30:09,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-07 07:30:09,494 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:30:09,494 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:30:09,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 07:30:09,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:30:09,716 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr38REQUIRES_VIOLATION === [alt_bzeroErr0REQUIRES_VIOLATION, alt_bzeroErr1REQUIRES_VIOLATION, real_freeErr0ASSERT_VIOLATIONMEMORY_FREE, real_freeErr1ASSERT_VIOLATIONMEMORY_FREE (and 630 more)] === [2021-11-07 07:30:09,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:30:09,716 INFO L85 PathProgramCache]: Analyzing trace with hash 763596938, now seen corresponding path program 1 times [2021-11-07 07:30:09,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:30:09,717 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [528667851] [2021-11-07 07:30:09,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:30:09,718 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:30:09,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:30:09,719 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:30:09,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 07:30:10,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:30:10,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 07:30:10,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:30:10,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:30:10,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:30:10,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:30:10,490 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:30:10,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [528667851] [2021-11-07 07:30:10,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [528667851] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:30:10,491 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:30:10,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 07:30:10,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899617824] [2021-11-07 07:30:10,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 07:30:10,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:30:10,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 07:30:10,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:30:10,493 INFO L87 Difference]: Start difference. First operand 1562 states and 2003 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-07 07:30:10,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:30:10,626 INFO L93 Difference]: Finished difference Result 1534 states and 1947 transitions. [2021-11-07 07:30:10,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:30:10,627 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 29 [2021-11-07 07:30:10,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:30:10,638 INFO L225 Difference]: With dead ends: 1534 [2021-11-07 07:30:10,638 INFO L226 Difference]: Without dead ends: 1534 [2021-11-07 07:30:10,638 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 07:30:10,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1534 states. [2021-11-07 07:30:10,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1534 to 1532. [2021-11-07 07:30:10,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1532 states, 977 states have (on average 1.932446264073695) internal successors, (1888), 1494 states have internal predecessors, (1888), 29 states have call successors, (29), 10 states have call predecessors, (29), 9 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-07 07:30:10,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1532 states to 1532 states and 1945 transitions. [2021-11-07 07:30:10,676 INFO L78 Accepts]: Start accepts. Automaton has 1532 states and 1945 transitions. Word has length 29 [2021-11-07 07:30:10,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:30:10,677 INFO L470 AbstractCegarLoop]: Abstraction has 1532 states and 1945 transitions. [2021-11-07 07:30:10,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-07 07:30:10,677 INFO L276 IsEmpty]: Start isEmpty. Operand 1532 states and 1945 transitions. [2021-11-07 07:30:10,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-07 07:30:10,679 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:30:10,679 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:30:10,694 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-11-07 07:30:10,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:30:10,894 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr52REQUIRES_VIOLATION === [alt_bzeroErr0REQUIRES_VIOLATION, alt_bzeroErr1REQUIRES_VIOLATION, real_freeErr0ASSERT_VIOLATIONMEMORY_FREE, real_freeErr1ASSERT_VIOLATIONMEMORY_FREE (and 630 more)] === [2021-11-07 07:30:10,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:30:10,895 INFO L85 PathProgramCache]: Analyzing trace with hash -366778344, now seen corresponding path program 1 times [2021-11-07 07:30:10,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:30:10,896 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1855936852] [2021-11-07 07:30:10,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:30:10,899 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:30:10,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:30:10,900 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:30:10,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 07:30:11,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:30:11,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 07:30:11,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:30:11,408 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 [2021-11-07 07:30:11,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:30:11,703 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:30:12,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:30:12,056 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:30:12,056 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1855936852] [2021-11-07 07:30:12,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1855936852] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:30:12,056 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:30:12,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 07:30:12,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928607258] [2021-11-07 07:30:12,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 07:30:12,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:30:12,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 07:30:12,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 07:30:12,058 INFO L87 Difference]: Start difference. First operand 1532 states and 1945 transitions. Second operand has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-07 07:30:22,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:30:22,618 INFO L93 Difference]: Finished difference Result 2647 states and 3286 transitions. [2021-11-07 07:30:22,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 07:30:22,619 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 43 [2021-11-07 07:30:22,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:30:22,636 INFO L225 Difference]: With dead ends: 2647 [2021-11-07 07:30:22,637 INFO L226 Difference]: Without dead ends: 2647 [2021-11-07 07:30:22,637 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 79 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-07 07:30:22,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2647 states. [2021-11-07 07:30:22,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2647 to 1528. [2021-11-07 07:30:22,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1528 states, 977 states have (on average 1.924257932446264) internal successors, (1880), 1490 states have internal predecessors, (1880), 29 states have call successors, (29), 10 states have call predecessors, (29), 9 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-07 07:30:22,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1528 states to 1528 states and 1937 transitions. [2021-11-07 07:30:22,686 INFO L78 Accepts]: Start accepts. Automaton has 1528 states and 1937 transitions. Word has length 43 [2021-11-07 07:30:22,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:30:22,687 INFO L470 AbstractCegarLoop]: Abstraction has 1528 states and 1937 transitions. [2021-11-07 07:30:22,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-07 07:30:22,687 INFO L276 IsEmpty]: Start isEmpty. Operand 1528 states and 1937 transitions. [2021-11-07 07:30:22,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-07 07:30:22,689 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:30:22,689 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:30:22,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 07:30:22,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:30:22,905 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr53REQUIRES_VIOLATION === [alt_bzeroErr0REQUIRES_VIOLATION, alt_bzeroErr1REQUIRES_VIOLATION, real_freeErr0ASSERT_VIOLATIONMEMORY_FREE, real_freeErr1ASSERT_VIOLATIONMEMORY_FREE (and 630 more)] === [2021-11-07 07:30:22,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:30:22,906 INFO L85 PathProgramCache]: Analyzing trace with hash -366778343, now seen corresponding path program 1 times [2021-11-07 07:30:22,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:30:22,907 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1635428171] [2021-11-07 07:30:22,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:30:22,908 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:30:22,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:30:22,909 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:30:22,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 07:30:23,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:30:23,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-07 07:30:23,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:30:23,457 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 [2021-11-07 07:30:23,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:30:23,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:30:25,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:30:25,079 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:30:25,080 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1635428171] [2021-11-07 07:30:25,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1635428171] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:30:25,080 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:30:25,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-07 07:30:25,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033456804] [2021-11-07 07:30:25,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 07:30:25,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:30:25,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 07:30:25,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-07 07:30:25,082 INFO L87 Difference]: Start difference. First operand 1528 states and 1937 transitions. Second operand has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 8 states have internal predecessors, (70), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-07 07:30:50,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:30:50,594 INFO L93 Difference]: Finished difference Result 2311 states and 2885 transitions. [2021-11-07 07:30:50,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 07:30:50,595 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 8 states have internal predecessors, (70), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 43 [2021-11-07 07:30:50,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:30:50,607 INFO L225 Difference]: With dead ends: 2311 [2021-11-07 07:30:50,607 INFO L226 Difference]: Without dead ends: 2311 [2021-11-07 07:30:50,607 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-11-07 07:30:50,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2311 states. [2021-11-07 07:30:50,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2311 to 1524. [2021-11-07 07:30:50,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1524 states, 977 states have (on average 1.9160696008188332) internal successors, (1872), 1486 states have internal predecessors, (1872), 29 states have call successors, (29), 10 states have call predecessors, (29), 9 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-07 07:30:50,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1524 states to 1524 states and 1929 transitions. [2021-11-07 07:30:50,648 INFO L78 Accepts]: Start accepts. Automaton has 1524 states and 1929 transitions. Word has length 43 [2021-11-07 07:30:50,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:30:50,649 INFO L470 AbstractCegarLoop]: Abstraction has 1524 states and 1929 transitions. [2021-11-07 07:30:50,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 8 states have internal predecessors, (70), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-07 07:30:50,649 INFO L276 IsEmpty]: Start isEmpty. Operand 1524 states and 1929 transitions. [2021-11-07 07:30:50,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-07 07:30:50,651 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:30:50,651 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:30:50,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-07 07:30:50,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:30:50,871 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting alt_mallocErr0REQUIRES_VIOLATION === [alt_bzeroErr0REQUIRES_VIOLATION, alt_bzeroErr1REQUIRES_VIOLATION, real_freeErr0ASSERT_VIOLATIONMEMORY_FREE, real_freeErr1ASSERT_VIOLATIONMEMORY_FREE (and 630 more)] === [2021-11-07 07:30:50,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:30:50,872 INFO L85 PathProgramCache]: Analyzing trace with hash 856696478, now seen corresponding path program 1 times [2021-11-07 07:30:50,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:30:50,873 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1520161514] [2021-11-07 07:30:50,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:30:50,873 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:30:50,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:30:50,875 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:30:50,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 07:30:51,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:30:51,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 07:30:51,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:30:51,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:30:51,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:30:52,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:30:52,147 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:30:52,147 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1520161514] [2021-11-07 07:30:52,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1520161514] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:30:52,148 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:30:52,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 07:30:52,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108421225] [2021-11-07 07:30:52,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:30:52,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:30:52,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:30:52,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:30:52,150 INFO L87 Difference]: Start difference. First operand 1524 states and 1929 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-07 07:30:52,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:30:52,234 INFO L93 Difference]: Finished difference Result 1512 states and 1909 transitions. [2021-11-07 07:30:52,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:30:52,237 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 62 [2021-11-07 07:30:52,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:30:52,245 INFO L225 Difference]: With dead ends: 1512 [2021-11-07 07:30:52,245 INFO L226 Difference]: Without dead ends: 1512 [2021-11-07 07:30:52,245 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:30:52,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1512 states. [2021-11-07 07:30:52,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1512 to 1512. [2021-11-07 07:30:52,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1512 states, 965 states have (on average 1.9191709844559586) internal successors, (1852), 1474 states have internal predecessors, (1852), 29 states have call successors, (29), 10 states have call predecessors, (29), 9 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-07 07:30:52,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1512 states to 1512 states and 1909 transitions. [2021-11-07 07:30:52,281 INFO L78 Accepts]: Start accepts. Automaton has 1512 states and 1909 transitions. Word has length 62 [2021-11-07 07:30:52,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:30:52,282 INFO L470 AbstractCegarLoop]: Abstraction has 1512 states and 1909 transitions. [2021-11-07 07:30:52,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-07 07:30:52,283 INFO L276 IsEmpty]: Start isEmpty. Operand 1512 states and 1909 transitions. [2021-11-07 07:30:52,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-07 07:30:52,284 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:30:52,284 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:30:52,306 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 07:30:52,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:30:52,498 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting alt_mallocErr0REQUIRES_VIOLATION === [alt_bzeroErr0REQUIRES_VIOLATION, alt_bzeroErr1REQUIRES_VIOLATION, real_freeErr0ASSERT_VIOLATIONMEMORY_FREE, real_freeErr1ASSERT_VIOLATIONMEMORY_FREE (and 630 more)] === [2021-11-07 07:30:52,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:30:52,499 INFO L85 PathProgramCache]: Analyzing trace with hash -621990318, now seen corresponding path program 1 times [2021-11-07 07:30:52,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:30:52,500 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [818424910] [2021-11-07 07:30:52,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:30:52,500 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:30:52,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:30:52,501 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:30:52,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-07 07:30:53,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:30:53,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-07 07:30:53,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:30:53,375 INFO L354 Elim1Store]: treesize reduction 77, result has 29.4 percent of original size [2021-11-07 07:30:53,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 37 [2021-11-07 07:30:53,666 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-07 07:30:53,666 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 14 treesize of output 19 [2021-11-07 07:30:53,751 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-07 07:30:53,752 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 18 treesize of output 14 [2021-11-07 07:30:53,885 INFO L354 Elim1Store]: treesize reduction 30, result has 36.2 percent of original size [2021-11-07 07:30:53,886 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 3 case distinctions, treesize of input 25 treesize of output 36 [2021-11-07 07:30:54,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:30:54,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:31:01,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:31:01,978 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:31:01,978 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [818424910] [2021-11-07 07:31:01,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [818424910] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:31:01,978 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:31:01,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-07 07:31:01,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697858483] [2021-11-07 07:31:01,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 07:31:01,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:31:01,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 07:31:01,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=67, Unknown=3, NotChecked=0, Total=110 [2021-11-07 07:31:01,980 INFO L87 Difference]: Start difference. First operand 1512 states and 1909 transitions. Second operand has 11 states, 10 states have (on average 7.3) internal successors, (73), 7 states have internal predecessors, (73), 4 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-07 07:31:19,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:31:19,879 INFO L93 Difference]: Finished difference Result 2385 states and 2888 transitions. [2021-11-07 07:31:19,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 07:31:19,880 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 7.3) internal successors, (73), 7 states have internal predecessors, (73), 4 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 70 [2021-11-07 07:31:19,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:31:19,889 INFO L225 Difference]: With dead ends: 2385 [2021-11-07 07:31:19,890 INFO L226 Difference]: Without dead ends: 2385 [2021-11-07 07:31:19,890 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 126 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=56, Invalid=97, Unknown=3, NotChecked=0, Total=156 [2021-11-07 07:31:19,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2385 states. [2021-11-07 07:31:19,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2385 to 1807. [2021-11-07 07:31:19,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1807 states, 1248 states have (on average 1.8758012820512822) internal successors, (2341), 1759 states have internal predecessors, (2341), 38 states have call successors, (38), 15 states have call predecessors, (38), 12 states have return successors, (37), 33 states have call predecessors, (37), 37 states have call successors, (37) [2021-11-07 07:31:19,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1807 states to 1807 states and 2416 transitions. [2021-11-07 07:31:19,939 INFO L78 Accepts]: Start accepts. Automaton has 1807 states and 2416 transitions. Word has length 70 [2021-11-07 07:31:19,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:31:19,940 INFO L470 AbstractCegarLoop]: Abstraction has 1807 states and 2416 transitions. [2021-11-07 07:31:19,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 7.3) internal successors, (73), 7 states have internal predecessors, (73), 4 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-07 07:31:19,940 INFO L276 IsEmpty]: Start isEmpty. Operand 1807 states and 2416 transitions. [2021-11-07 07:31:19,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-07 07:31:19,941 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:31:19,942 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:31:19,960 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-11-07 07:31:20,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:31:20,160 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting alt_mallocErr1REQUIRES_VIOLATION === [alt_bzeroErr0REQUIRES_VIOLATION, alt_bzeroErr1REQUIRES_VIOLATION, real_freeErr0ASSERT_VIOLATIONMEMORY_FREE, real_freeErr1ASSERT_VIOLATIONMEMORY_FREE (and 630 more)] === [2021-11-07 07:31:20,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:31:20,160 INFO L85 PathProgramCache]: Analyzing trace with hash -621990317, now seen corresponding path program 1 times [2021-11-07 07:31:20,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:31:20,161 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1668669456] [2021-11-07 07:31:20,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:31:20,161 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:31:20,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:31:20,162 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:31:20,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 07:31:20,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:31:20,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-07 07:31:20,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:31:21,114 INFO L354 Elim1Store]: treesize reduction 77, result has 29.4 percent of original size [2021-11-07 07:31:21,115 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 49 [2021-11-07 07:31:21,194 INFO L354 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2021-11-07 07:31:21,194 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 63 [2021-11-07 07:31:21,672 INFO L354 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2021-11-07 07:31:21,673 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 3 case distinctions, treesize of input 44 treesize of output 51 [2021-11-07 07:31:21,732 INFO L354 Elim1Store]: treesize reduction 2, result has 92.0 percent of original size [2021-11-07 07:31:21,732 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 64 [2021-11-07 07:31:22,006 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-07 07:31:22,006 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 11 treesize of output 11 [2021-11-07 07:31:22,283 INFO L354 Elim1Store]: treesize reduction 28, result has 40.4 percent of original size [2021-11-07 07:31:22,284 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 3 case distinctions, treesize of input 17 treesize of output 30 [2021-11-07 07:31:30,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:31:30,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:31:42,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:31:42,133 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:31:42,133 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1668669456] [2021-11-07 07:31:42,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1668669456] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:31:42,133 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:31:42,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 6] imperfect sequences [] total 13 [2021-11-07 07:31:42,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302997503] [2021-11-07 07:31:42,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-07 07:31:42,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:31:42,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-07 07:31:42,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=130, Unknown=2, NotChecked=0, Total=182 [2021-11-07 07:31:42,136 INFO L87 Difference]: Start difference. First operand 1807 states and 2416 transitions. Second operand has 14 states, 13 states have (on average 9.846153846153847) internal successors, (128), 11 states have internal predecessors, (128), 7 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-07 07:32:36,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:32:36,714 INFO L93 Difference]: Finished difference Result 1825 states and 2435 transitions. [2021-11-07 07:32:36,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-07 07:32:36,716 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 9.846153846153847) internal successors, (128), 11 states have internal predecessors, (128), 7 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 70 [2021-11-07 07:32:36,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:32:36,722 INFO L225 Difference]: With dead ends: 1825 [2021-11-07 07:32:36,722 INFO L226 Difference]: Without dead ends: 1825 [2021-11-07 07:32:36,723 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 124 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 13.9s TimeCoverageRelationStatistics Valid=145, Invalid=359, Unknown=2, NotChecked=0, Total=506 [2021-11-07 07:32:36,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1825 states. [2021-11-07 07:32:36,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1825 to 1822. [2021-11-07 07:32:36,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1822 states, 1259 states have (on average 1.8697378872120731) internal successors, (2354), 1771 states have internal predecessors, (2354), 40 states have call successors, (40), 18 states have call predecessors, (40), 14 states have return successors, (39), 33 states have call predecessors, (39), 39 states have call successors, (39) [2021-11-07 07:32:36,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1822 states to 1822 states and 2433 transitions. [2021-11-07 07:32:36,763 INFO L78 Accepts]: Start accepts. Automaton has 1822 states and 2433 transitions. Word has length 70 [2021-11-07 07:32:36,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:32:36,765 INFO L470 AbstractCegarLoop]: Abstraction has 1822 states and 2433 transitions. [2021-11-07 07:32:36,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 9.846153846153847) internal successors, (128), 11 states have internal predecessors, (128), 7 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-07 07:32:36,765 INFO L276 IsEmpty]: Start isEmpty. Operand 1822 states and 2433 transitions. [2021-11-07 07:32:36,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-07 07:32:36,766 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:32:36,767 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:32:36,791 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-07 07:32:36,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:32:36,987 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [alt_bzeroErr0REQUIRES_VIOLATION, alt_bzeroErr1REQUIRES_VIOLATION, real_freeErr0ASSERT_VIOLATIONMEMORY_FREE, real_freeErr1ASSERT_VIOLATIONMEMORY_FREE (and 630 more)] === [2021-11-07 07:32:36,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:32:36,988 INFO L85 PathProgramCache]: Analyzing trace with hash -454983861, now seen corresponding path program 1 times [2021-11-07 07:32:36,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:32:36,989 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [403877386] [2021-11-07 07:32:36,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:32:36,989 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:32:36,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:32:36,990 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:32:36,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-07 07:32:37,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:32:37,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 07:32:37,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:32:38,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:38,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:32:38,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:38,349 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:32:38,349 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [403877386] [2021-11-07 07:32:38,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [403877386] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:32:38,349 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:32:38,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2021-11-07 07:32:38,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464194710] [2021-11-07 07:32:38,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 07:32:38,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:32:38,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 07:32:38,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-07 07:32:38,351 INFO L87 Difference]: Start difference. First operand 1822 states and 2433 transitions. Second operand has 8 states, 8 states have (on average 8.875) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-07 07:32:38,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:32:38,601 INFO L93 Difference]: Finished difference Result 1838 states and 2449 transitions. [2021-11-07 07:32:38,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 07:32:38,602 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 76 [2021-11-07 07:32:38,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:32:38,615 INFO L225 Difference]: With dead ends: 1838 [2021-11-07 07:32:38,615 INFO L226 Difference]: Without dead ends: 1838 [2021-11-07 07:32:38,615 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-07 07:32:38,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1838 states. [2021-11-07 07:32:38,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1838 to 1829. [2021-11-07 07:32:38,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1829 states, 1265 states have (on average 1.8671936758893282) internal successors, (2362), 1776 states have internal predecessors, (2362), 40 states have call successors, (40), 20 states have call predecessors, (40), 15 states have return successors, (39), 34 states have call predecessors, (39), 39 states have call successors, (39) [2021-11-07 07:32:38,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1829 states to 1829 states and 2441 transitions. [2021-11-07 07:32:38,686 INFO L78 Accepts]: Start accepts. Automaton has 1829 states and 2441 transitions. Word has length 76 [2021-11-07 07:32:38,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:32:38,686 INFO L470 AbstractCegarLoop]: Abstraction has 1829 states and 2441 transitions. [2021-11-07 07:32:38,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-07 07:32:38,687 INFO L276 IsEmpty]: Start isEmpty. Operand 1829 states and 2441 transitions. [2021-11-07 07:32:38,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-07 07:32:38,688 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:32:38,688 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:32:38,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-07 07:32:38,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:32:38,906 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr70REQUIRES_VIOLATION === [alt_bzeroErr0REQUIRES_VIOLATION, alt_bzeroErr1REQUIRES_VIOLATION, real_freeErr0ASSERT_VIOLATIONMEMORY_FREE, real_freeErr1ASSERT_VIOLATIONMEMORY_FREE (and 630 more)] === [2021-11-07 07:32:38,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:32:38,906 INFO L85 PathProgramCache]: Analyzing trace with hash -509863037, now seen corresponding path program 1 times [2021-11-07 07:32:38,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:32:38,907 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [328670542] [2021-11-07 07:32:38,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:32:38,907 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:32:38,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:32:38,908 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:32:38,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-07 07:32:39,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:32:39,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 07:32:39,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:32:40,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:40,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:32:40,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:40,901 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:32:40,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [328670542] [2021-11-07 07:32:40,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [328670542] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:32:40,901 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:32:40,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2021-11-07 07:32:40,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029513645] [2021-11-07 07:32:40,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 07:32:40,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:32:40,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 07:32:40,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 07:32:40,904 INFO L87 Difference]: Start difference. First operand 1829 states and 2441 transitions. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 7 states have internal predecessors, (77), 2 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-07 07:32:41,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:32:41,708 INFO L93 Difference]: Finished difference Result 1873 states and 2492 transitions. [2021-11-07 07:32:41,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 07:32:41,710 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 7 states have internal predecessors, (77), 2 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 76 [2021-11-07 07:32:41,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:32:41,715 INFO L225 Difference]: With dead ends: 1873 [2021-11-07 07:32:41,715 INFO L226 Difference]: Without dead ends: 1873 [2021-11-07 07:32:41,716 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-11-07 07:32:41,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1873 states. [2021-11-07 07:32:41,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1873 to 1832. [2021-11-07 07:32:41,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1832 states, 1267 states have (on average 1.8658247829518548) internal successors, (2364), 1778 states have internal predecessors, (2364), 40 states have call successors, (40), 20 states have call predecessors, (40), 16 states have return successors, (41), 34 states have call predecessors, (41), 39 states have call successors, (41) [2021-11-07 07:32:41,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1832 states to 1832 states and 2445 transitions. [2021-11-07 07:32:41,769 INFO L78 Accepts]: Start accepts. Automaton has 1832 states and 2445 transitions. Word has length 76 [2021-11-07 07:32:41,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:32:41,769 INFO L470 AbstractCegarLoop]: Abstraction has 1832 states and 2445 transitions. [2021-11-07 07:32:41,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 7 states have internal predecessors, (77), 2 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-07 07:32:41,770 INFO L276 IsEmpty]: Start isEmpty. Operand 1832 states and 2445 transitions. [2021-11-07 07:32:41,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-07 07:32:41,778 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:32:41,778 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:32:41,806 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-07 07:32:41,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:32:41,994 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr70REQUIRES_VIOLATION === [alt_bzeroErr0REQUIRES_VIOLATION, alt_bzeroErr1REQUIRES_VIOLATION, real_freeErr0ASSERT_VIOLATIONMEMORY_FREE, real_freeErr1ASSERT_VIOLATIONMEMORY_FREE (and 630 more)] === [2021-11-07 07:32:41,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:32:41,995 INFO L85 PathProgramCache]: Analyzing trace with hash -2094137395, now seen corresponding path program 1 times [2021-11-07 07:32:41,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:32:41,996 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [263666919] [2021-11-07 07:32:41,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:32:41,996 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:32:41,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:32:41,998 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:32:42,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-07 07:32:43,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:32:43,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 07:32:43,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:32:43,129 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 [2021-11-07 07:32:43,610 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-07 07:32:43,611 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 16 treesize of output 21 [2021-11-07 07:32:43,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:43,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:32:44,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:44,318 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:32:44,318 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [263666919] [2021-11-07 07:32:44,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [263666919] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:32:44,319 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:32:44,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [] total 7 [2021-11-07 07:32:44,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891461435] [2021-11-07 07:32:44,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 07:32:44,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:32:44,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 07:32:44,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-07 07:32:44,321 INFO L87 Difference]: Start difference. First operand 1832 states and 2445 transitions. Second operand has 8 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 4 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-07 07:35:38,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:35:38,547 INFO L93 Difference]: Finished difference Result 3462 states and 4494 transitions. [2021-11-07 07:35:38,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-07 07:35:38,548 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 4 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 81 [2021-11-07 07:35:38,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:35:38,556 INFO L225 Difference]: With dead ends: 3462 [2021-11-07 07:35:38,556 INFO L226 Difference]: Without dead ends: 3462 [2021-11-07 07:35:38,557 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 152 SyntacticMatches, 5 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-11-07 07:35:38,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3462 states. [2021-11-07 07:35:38,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3462 to 1833. [2021-11-07 07:35:38,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1833 states, 1270 states have (on average 1.8614173228346456) internal successors, (2364), 1778 states have internal predecessors, (2364), 40 states have call successors, (40), 21 states have call predecessors, (40), 17 states have return successors, (41), 34 states have call predecessors, (41), 39 states have call successors, (41) [2021-11-07 07:35:38,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1833 states to 1833 states and 2445 transitions. [2021-11-07 07:35:38,602 INFO L78 Accepts]: Start accepts. Automaton has 1833 states and 2445 transitions. Word has length 81 [2021-11-07 07:35:38,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:35:38,603 INFO L470 AbstractCegarLoop]: Abstraction has 1833 states and 2445 transitions. [2021-11-07 07:35:38,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 4 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-07 07:35:38,603 INFO L276 IsEmpty]: Start isEmpty. Operand 1833 states and 2445 transitions. [2021-11-07 07:35:38,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-07 07:35:38,604 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:35:38,605 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:35:38,630 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-07 07:35:38,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:35:38,825 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr71REQUIRES_VIOLATION === [alt_bzeroErr0REQUIRES_VIOLATION, alt_bzeroErr1REQUIRES_VIOLATION, real_freeErr0ASSERT_VIOLATIONMEMORY_FREE, real_freeErr1ASSERT_VIOLATIONMEMORY_FREE (and 630 more)] === [2021-11-07 07:35:38,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:35:38,826 INFO L85 PathProgramCache]: Analyzing trace with hash -2094137394, now seen corresponding path program 1 times [2021-11-07 07:35:38,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:35:38,827 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [328767723] [2021-11-07 07:35:38,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:35:38,827 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:35:38,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:35:38,829 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:35:38,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f01814a2-0f89-4613-b7f5-4adb4e06f641/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-07 07:35:40,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:35:40,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-07 07:35:40,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:35:40,085 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 [2021-11-07 07:35:40,102 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 [2021-11-07 07:35:43,476 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-07 07:35:43,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 31 [2021-11-07 07:35:43,491 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-07 07:35:43,491 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 23 treesize of output 23 [2021-11-07 07:35:43,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:35:43,552 INFO L328 TraceCheckSpWp]: Computing backward predicates...