./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-3.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_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/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_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/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_b74a9876-1854-44cf-b2de-891be99f040f/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 5b724500cddd07446974ec59df8ac86aa980f4ff713324fa73d397377235cbe2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 08:42:41,047 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 08:42:41,050 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 08:42:41,085 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 08:42:41,086 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 08:42:41,087 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 08:42:41,089 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 08:42:41,092 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 08:42:41,094 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 08:42:41,101 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 08:42:41,102 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 08:42:41,105 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 08:42:41,105 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 08:42:41,108 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 08:42:41,112 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 08:42:41,115 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 08:42:41,117 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 08:42:41,119 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 08:42:41,124 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 08:42:41,132 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 08:42:41,133 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 08:42:41,135 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 08:42:41,136 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 08:42:41,137 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 08:42:41,141 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 08:42:41,141 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 08:42:41,141 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 08:42:41,142 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 08:42:41,143 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 08:42:41,144 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 08:42:41,145 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 08:42:41,146 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 08:42:41,147 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 08:42:41,147 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 08:42:41,149 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 08:42:41,149 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 08:42:41,150 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 08:42:41,150 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 08:42:41,150 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 08:42:41,151 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 08:42:41,152 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 08:42:41,153 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-07 08:42:41,177 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 08:42:41,178 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 08:42:41,178 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 08:42:41,178 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 08:42:41,179 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 08:42:41,180 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 08:42:41,180 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 08:42:41,180 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 08:42:41,180 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 08:42:41,180 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 08:42:41,181 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 08:42:41,181 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 08:42:41,181 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 08:42:41,181 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-07 08:42:41,181 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-07 08:42:41,182 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-07 08:42:41,182 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 08:42:41,182 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 08:42:41,182 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 08:42:41,182 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 08:42:41,183 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 08:42:41,183 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 08:42:41,183 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 08:42:41,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:42:41,183 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 08:42:41,184 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 08:42:41,184 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 08:42:41,184 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 08:42:41,184 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 08:42:41,184 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_b74a9876-1854-44cf-b2de-891be99f040f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b724500cddd07446974ec59df8ac86aa980f4ff713324fa73d397377235cbe2 [2021-11-07 08:42:41,434 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 08:42:41,456 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 08:42:41,459 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 08:42:41,460 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 08:42:41,461 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 08:42:41,462 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-3.i [2021-11-07 08:42:41,562 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/data/ca1d1bae9/fa742abfda0c4661adc6a6d512af83d7/FLAG26652cf6f [2021-11-07 08:42:42,251 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 08:42:42,254 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-3.i [2021-11-07 08:42:42,286 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/data/ca1d1bae9/fa742abfda0c4661adc6a6d512af83d7/FLAG26652cf6f [2021-11-07 08:42:42,415 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/data/ca1d1bae9/fa742abfda0c4661adc6a6d512af83d7 [2021-11-07 08:42:42,417 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 08:42:42,419 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-07 08:42:42,420 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 08:42:42,421 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 08:42:42,425 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 08:42:42,426 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:42:42" (1/1) ... [2021-11-07 08:42:42,427 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d733fb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:42, skipping insertion in model container [2021-11-07 08:42:42,428 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:42:42" (1/1) ... [2021-11-07 08:42:42,435 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 08:42:42,508 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 08:42:42,980 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_b74a9876-1854-44cf-b2de-891be99f040f/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-3.i[33021,33034] [2021-11-07 08:42:43,141 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_b74a9876-1854-44cf-b2de-891be99f040f/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-3.i[49681,49694] [2021-11-07 08:42:43,204 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:42:43,223 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 08:42:43,223 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7840cc56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:43, skipping insertion in model container [2021-11-07 08:42:43,224 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 08:42:43,224 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-11-07 08:42:43,227 INFO L168 Benchmark]: Toolchain (without parser) took 806.54 ms. Allocated memory is still 117.4 MB. Free memory was 79.6 MB in the beginning and 78.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 08:42:43,229 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 117.4 MB. Free memory was 91.7 MB in the beginning and 91.7 MB in the end (delta: 27.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 08:42:43,230 INFO L168 Benchmark]: CACSL2BoogieTranslator took 803.63 ms. Allocated memory is still 117.4 MB. Free memory was 79.3 MB in the beginning and 78.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 08:42:43,232 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 117.4 MB. Free memory was 91.7 MB in the beginning and 91.7 MB in the end (delta: 27.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 803.63 ms. Allocated memory is still 117.4 MB. Free memory was 79.3 MB in the beginning and 78.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 737]: 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_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/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_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/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_b74a9876-1854-44cf-b2de-891be99f040f/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 5b724500cddd07446974ec59df8ac86aa980f4ff713324fa73d397377235cbe2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 08:42:45,703 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 08:42:45,707 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 08:42:45,751 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 08:42:45,751 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 08:42:45,753 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 08:42:45,755 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 08:42:45,757 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 08:42:45,760 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 08:42:45,761 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 08:42:45,762 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 08:42:45,764 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 08:42:45,765 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 08:42:45,766 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 08:42:45,768 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 08:42:45,769 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 08:42:45,771 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 08:42:45,772 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 08:42:45,775 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 08:42:45,777 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 08:42:45,780 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 08:42:45,781 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 08:42:45,783 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 08:42:45,784 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 08:42:45,788 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 08:42:45,789 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 08:42:45,789 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 08:42:45,790 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 08:42:45,791 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 08:42:45,801 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 08:42:45,802 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 08:42:45,803 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 08:42:45,804 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 08:42:45,805 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 08:42:45,807 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 08:42:45,808 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 08:42:45,810 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 08:42:45,810 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 08:42:45,811 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 08:42:45,812 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 08:42:45,814 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 08:42:45,815 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-07 08:42:45,862 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 08:42:45,865 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 08:42:45,865 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 08:42:45,866 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 08:42:45,868 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 08:42:45,868 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 08:42:45,868 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 08:42:45,869 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 08:42:45,869 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 08:42:45,869 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 08:42:45,870 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 08:42:45,871 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 08:42:45,871 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 08:42:45,871 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-07 08:42:45,871 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-07 08:42:45,872 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-07 08:42:45,872 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 08:42:45,872 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 08:42:45,872 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 08:42:45,873 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 08:42:45,873 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 08:42:45,873 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 08:42:45,873 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 08:42:45,874 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 08:42:45,874 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 08:42:45,874 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:42:45,874 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 08:42:45,875 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 08:42:45,875 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-07 08:42:45,875 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 08:42:45,876 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 08:42:45,876 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 08:42:45,876 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_b74a9876-1854-44cf-b2de-891be99f040f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b724500cddd07446974ec59df8ac86aa980f4ff713324fa73d397377235cbe2 [2021-11-07 08:42:46,298 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 08:42:46,329 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 08:42:46,334 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 08:42:46,336 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 08:42:46,337 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 08:42:46,338 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-3.i [2021-11-07 08:42:46,422 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/data/422939371/06e87a65906141789aa265b26bdf733e/FLAGd80efa3ba [2021-11-07 08:42:47,088 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 08:42:47,092 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-3.i [2021-11-07 08:42:47,121 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/data/422939371/06e87a65906141789aa265b26bdf733e/FLAGd80efa3ba [2021-11-07 08:42:47,300 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/data/422939371/06e87a65906141789aa265b26bdf733e [2021-11-07 08:42:47,303 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 08:42:47,304 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-07 08:42:47,306 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 08:42:47,306 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 08:42:47,313 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 08:42:47,314 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:42:47" (1/1) ... [2021-11-07 08:42:47,315 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20cd69e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:47, skipping insertion in model container [2021-11-07 08:42:47,315 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:42:47" (1/1) ... [2021-11-07 08:42:47,322 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 08:42:47,388 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 08:42:47,846 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_b74a9876-1854-44cf-b2de-891be99f040f/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-3.i[33021,33034] [2021-11-07 08:42:48,080 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_b74a9876-1854-44cf-b2de-891be99f040f/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-3.i[49681,49694] [2021-11-07 08:42:48,103 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:42:48,115 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 08:42:48,152 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 08:42:48,193 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_b74a9876-1854-44cf-b2de-891be99f040f/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-3.i[33021,33034] [2021-11-07 08:42:48,322 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_b74a9876-1854-44cf-b2de-891be99f040f/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-3.i[49681,49694] [2021-11-07 08:42:48,356 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:42:48,364 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 08:42:48,412 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_b74a9876-1854-44cf-b2de-891be99f040f/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-3.i[33021,33034] [2021-11-07 08:42:48,493 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_b74a9876-1854-44cf-b2de-891be99f040f/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-3.i[49681,49694] [2021-11-07 08:42:48,507 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:42:48,562 INFO L208 MainTranslator]: Completed translation [2021-11-07 08:42:48,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:48 WrapperNode [2021-11-07 08:42:48,563 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 08:42:48,564 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 08:42:48,565 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 08:42:48,565 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 08:42:48,579 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:48" (1/1) ... [2021-11-07 08:42:48,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:48" (1/1) ... [2021-11-07 08:42:48,650 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:48" (1/1) ... [2021-11-07 08:42:48,651 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:48" (1/1) ... [2021-11-07 08:42:48,792 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:48" (1/1) ... [2021-11-07 08:42:48,837 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:48" (1/1) ... [2021-11-07 08:42:48,847 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:48" (1/1) ... [2021-11-07 08:42:48,872 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 08:42:48,873 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 08:42:48,874 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 08:42:48,874 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 08:42:48,876 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:48" (1/1) ... [2021-11-07 08:42:48,883 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:42:48,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:42:48,909 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 08:42:48,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 08:42:48,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-07 08:42:49,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 08:42:49,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-11-07 08:42:49,000 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-07 08:42:49,000 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-07 08:42:49,000 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-07 08:42:49,001 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-07 08:42:49,001 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-07 08:42:49,001 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-07 08:42:49,001 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-07 08:42:49,001 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2021-11-07 08:42:49,002 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-07 08:42:49,002 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-07 08:42:49,002 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-11-07 08:42:49,002 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-11-07 08:42:49,002 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-11-07 08:42:49,003 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-11-07 08:42:49,003 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-07 08:42:49,003 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-11-07 08:42:49,003 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-11-07 08:42:49,003 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-07 08:42:49,004 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-11-07 08:42:49,004 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-11-07 08:42:49,004 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-11-07 08:42:49,004 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-07 08:42:49,004 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-11-07 08:42:49,005 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-11-07 08:42:49,005 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-11-07 08:42:49,005 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-11-07 08:42:49,005 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-11-07 08:42:49,005 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-11-07 08:42:49,005 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-11-07 08:42:49,006 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-07 08:42:49,006 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-11-07 08:42:49,007 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-11-07 08:42:49,007 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-11-07 08:42:49,008 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-11-07 08:42:49,008 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-11-07 08:42:49,008 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-11-07 08:42:49,008 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-11-07 08:42:49,009 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-11-07 08:42:49,009 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-11-07 08:42:49,009 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-11-07 08:42:49,009 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-11-07 08:42:49,010 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-11-07 08:42:49,010 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-11-07 08:42:49,010 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-11-07 08:42:49,010 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-11-07 08:42:49,010 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-11-07 08:42:49,010 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-11-07 08:42:49,011 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-11-07 08:42:49,011 INFO L130 BoogieDeclarations]: Found specification of procedure ffsl [2021-11-07 08:42:49,011 INFO L130 BoogieDeclarations]: Found specification of procedure ffsll [2021-11-07 08:42:49,011 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-11-07 08:42:49,012 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-11-07 08:42:49,012 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp_l [2021-11-07 08:42:49,013 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp_l [2021-11-07 08:42:49,013 INFO L130 BoogieDeclarations]: Found specification of procedure explicit_bzero [2021-11-07 08:42:49,014 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-11-07 08:42:49,014 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-11-07 08:42:49,015 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-11-07 08:42:49,015 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-11-07 08:42:49,015 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-11-07 08:42:49,015 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-11-07 08:42:49,016 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-07 08:42:49,016 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-07 08:42:49,016 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-07 08:42:49,016 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-07 08:42:49,016 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-07 08:42:49,017 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-07 08:42:49,017 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-07 08:42:49,017 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-07 08:42:49,017 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-07 08:42:49,018 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-07 08:42:49,018 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-07 08:42:49,018 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-07 08:42:49,019 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-07 08:42:49,019 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-07 08:42:49,019 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-07 08:42:49,019 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-07 08:42:49,019 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-07 08:42:49,020 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-07 08:42:49,020 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-07 08:42:49,020 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-07 08:42:49,020 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-07 08:42:49,020 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-07 08:42:49,020 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-07 08:42:49,021 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-07 08:42:49,021 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-07 08:42:49,021 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-07 08:42:49,021 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-07 08:42:49,021 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-07 08:42:49,021 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-07 08:42:49,022 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-07 08:42:49,022 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-07 08:42:49,022 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-07 08:42:49,023 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-07 08:42:49,023 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-07 08:42:49,023 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-07 08:42:49,023 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-07 08:42:49,023 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-07 08:42:49,024 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-07 08:42:49,024 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-07 08:42:49,024 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-07 08:42:49,024 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-07 08:42:49,024 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-07 08:42:49,024 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-07 08:42:49,025 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-07 08:42:49,025 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-07 08:42:49,025 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-07 08:42:49,025 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-07 08:42:49,026 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-07 08:42:49,026 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-07 08:42:49,026 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-07 08:42:49,026 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-07 08:42:49,027 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-07 08:42:49,027 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-07 08:42:49,028 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-07 08:42:49,031 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-07 08:42:49,032 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-07 08:42:49,032 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-07 08:42:49,032 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-07 08:42:49,033 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-07 08:42:49,034 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-07 08:42:49,034 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-07 08:42:49,034 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-07 08:42:49,034 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-07 08:42:49,041 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-07 08:42:49,041 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-07 08:42:49,041 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-07 08:42:49,041 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-07 08:42:49,041 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-07 08:42:49,042 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-07 08:42:49,042 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-07 08:42:49,042 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-07 08:42:49,042 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-07 08:42:49,042 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-07 08:42:49,043 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-07 08:42:49,043 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-07 08:42:49,043 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-07 08:42:49,043 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-07 08:42:49,043 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-07 08:42:49,043 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-07 08:42:49,043 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-07 08:42:49,044 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-07 08:42:49,044 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-07 08:42:49,044 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-07 08:42:49,044 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-07 08:42:49,044 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-07 08:42:49,044 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-07 08:42:49,045 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-07 08:42:49,045 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-07 08:42:49,045 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-07 08:42:49,045 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-07 08:42:49,045 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-07 08:42:49,045 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-07 08:42:49,045 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-07 08:42:49,046 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-07 08:42:49,046 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-07 08:42:49,046 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-07 08:42:49,046 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-07 08:42:49,046 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-07 08:42:49,046 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-07 08:42:49,047 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-07 08:42:49,047 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-07 08:42:49,047 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-07 08:42:49,047 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-07 08:42:49,047 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-07 08:42:49,047 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-07 08:42:49,048 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-07 08:42:49,048 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-07 08:42:49,048 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-07 08:42:49,048 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-07 08:42:49,049 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-07 08:42:49,049 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-07 08:42:49,049 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 08:42:49,049 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-07 08:42:49,049 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2021-11-07 08:42:49,049 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-07 08:42:49,050 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 08:42:49,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 08:42:49,050 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 08:42:49,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 08:42:49,050 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 08:42:49,050 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-07 08:42:49,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 08:42:49,051 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 08:42:49,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-07 08:42:49,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 08:42:49,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 08:42:49,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-11-07 08:42:49,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 08:42:49,709 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 08:42:58,028 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 08:42:58,028 INFO L299 CfgBuilder]: Removed 100 assume(true) statements. [2021-11-07 08:42:58,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:42:58 BoogieIcfgContainer [2021-11-07 08:42:58,034 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 08:42:58,037 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 08:42:58,037 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 08:42:58,040 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 08:42:58,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:42:47" (1/3) ... [2021-11-07 08:42:58,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41c34486 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:42:58, skipping insertion in model container [2021-11-07 08:42:58,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:48" (2/3) ... [2021-11-07 08:42:58,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41c34486 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:42:58, skipping insertion in model container [2021-11-07 08:42:58,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:42:58" (3/3) ... [2021-11-07 08:42:58,048 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_BER_test5-3.i [2021-11-07 08:42:58,054 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 08:42:58,055 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 932 error locations. [2021-11-07 08:42:58,121 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 08:42:58,132 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 08:42:58,132 INFO L340 AbstractCegarLoop]: Starting to check reachability of 932 error locations. [2021-11-07 08:42:58,195 INFO L276 IsEmpty]: Start isEmpty. Operand has 1841 states, 895 states have (on average 2.2614525139664803) internal successors, (2024), 1826 states have internal predecessors, (2024), 14 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 10 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-07 08:42:58,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-07 08:42:58,202 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:42:58,203 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:42:58,204 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-07 08:42:58,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:42:58,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1371675552, now seen corresponding path program 1 times [2021-11-07 08:42:58,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:42:58,222 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1560686213] [2021-11-07 08:42:58,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:42:58,224 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:42:58,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 08:42:58,230 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:42:58,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 08:42:58,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:42:58,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 08:42:58,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:42:58,591 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 08:42:58,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:42:58,636 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 08:42:58,637 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:42:58,637 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1560686213] [2021-11-07 08:42:58,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1560686213] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 08:42:58,638 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:42:58,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 08:42:58,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409803555] [2021-11-07 08:42:58,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 08:42:58,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:42:58,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 08:42:58,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 08:42:58,669 INFO L87 Difference]: Start difference. First operand has 1841 states, 895 states have (on average 2.2614525139664803) internal successors, (2024), 1826 states have internal predecessors, (2024), 14 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 10 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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 08:42:58,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:42:58,812 INFO L93 Difference]: Finished difference Result 1823 states and 1925 transitions. [2021-11-07 08:42:58,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 08:42:58,813 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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 9 [2021-11-07 08:42:58,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:42:58,853 INFO L225 Difference]: With dead ends: 1823 [2021-11-07 08:42:58,853 INFO L226 Difference]: Without dead ends: 1820 [2021-11-07 08:42:58,854 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 08:42:58,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1820 states. [2021-11-07 08:42:59,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1820 to 1820. [2021-11-07 08:42:59,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1820 states, 886 states have (on average 2.13882618510158) internal successors, (1895), 1806 states have internal predecessors, (1895), 14 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 9 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-07 08:42:59,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1820 states to 1820 states and 1922 transitions. [2021-11-07 08:42:59,067 INFO L78 Accepts]: Start accepts. Automaton has 1820 states and 1922 transitions. Word has length 9 [2021-11-07 08:42:59,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:42:59,068 INFO L470 AbstractCegarLoop]: Abstraction has 1820 states and 1922 transitions. [2021-11-07 08:42:59,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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 08:42:59,069 INFO L276 IsEmpty]: Start isEmpty. Operand 1820 states and 1922 transitions. [2021-11-07 08:42:59,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-07 08:42:59,070 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:42:59,070 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:42:59,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 08:42:59,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 08:42:59,284 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-07 08:42:59,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:42:59,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1371675490, now seen corresponding path program 1 times [2021-11-07 08:42:59,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:42:59,286 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [5553657] [2021-11-07 08:42:59,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:42:59,287 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:42:59,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 08:42:59,288 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:42:59,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 08:42:59,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:42:59,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 08:42:59,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:42:59,679 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 08:42:59,711 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 08:42:59,711 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:42:59,779 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 08:42:59,780 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:42:59,780 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [5553657] [2021-11-07 08:42:59,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [5553657] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 08:42:59,781 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:42:59,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 08:42:59,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550931071] [2021-11-07 08:42:59,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:42:59,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:42:59,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:42:59,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:42:59,784 INFO L87 Difference]: Start difference. First operand 1820 states and 1922 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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 08:43:04,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:43:04,050 INFO L93 Difference]: Finished difference Result 2065 states and 2201 transitions. [2021-11-07 08:43:04,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:43:04,051 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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 9 [2021-11-07 08:43:04,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:43:04,064 INFO L225 Difference]: With dead ends: 2065 [2021-11-07 08:43:04,064 INFO L226 Difference]: Without dead ends: 2065 [2021-11-07 08:43:04,065 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 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 08:43:04,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2065 states. [2021-11-07 08:43:04,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2065 to 1805. [2021-11-07 08:43:04,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1805 states, 962 states have (on average 2.0155925155925156) internal successors, (1939), 1791 states have internal predecessors, (1939), 14 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 9 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-07 08:43:04,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1805 states to 1805 states and 1966 transitions. [2021-11-07 08:43:04,130 INFO L78 Accepts]: Start accepts. Automaton has 1805 states and 1966 transitions. Word has length 9 [2021-11-07 08:43:04,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:43:04,131 INFO L470 AbstractCegarLoop]: Abstraction has 1805 states and 1966 transitions. [2021-11-07 08:43:04,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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 08:43:04,132 INFO L276 IsEmpty]: Start isEmpty. Operand 1805 states and 1966 transitions. [2021-11-07 08:43:04,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-07 08:43:04,133 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:43:04,133 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:43:04,150 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 08:43:04,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 08:43:04,346 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr1REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-07 08:43:04,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:43:04,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1371675489, now seen corresponding path program 1 times [2021-11-07 08:43:04,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:43:04,349 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [894616758] [2021-11-07 08:43:04,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:43:04,349 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:43:04,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 08:43:04,351 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:43:04,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 08:43:04,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:43:04,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 08:43:04,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:43:04,660 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 08:43:04,693 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 08:43:04,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:43:04,781 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 08:43:04,782 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:43:04,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [894616758] [2021-11-07 08:43:04,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [894616758] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 08:43:04,783 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:43:04,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-07 08:43:04,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334290022] [2021-11-07 08:43:04,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:43:04,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:43:04,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:43:04,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:43:04,795 INFO L87 Difference]: Start difference. First operand 1805 states and 1966 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 08:43:12,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:43:12,793 INFO L93 Difference]: Finished difference Result 2365 states and 2568 transitions. [2021-11-07 08:43:12,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:43:12,794 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-11-07 08:43:12,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:43:12,810 INFO L225 Difference]: With dead ends: 2365 [2021-11-07 08:43:12,810 INFO L226 Difference]: Without dead ends: 2365 [2021-11-07 08:43:12,811 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 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 08:43:12,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2365 states. [2021-11-07 08:43:12,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2365 to 1961. [2021-11-07 08:43:12,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1961 states, 1128 states have (on average 1.9902482269503545) internal successors, (2245), 1947 states have internal predecessors, (2245), 14 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 9 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-07 08:43:12,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1961 states to 1961 states and 2272 transitions. [2021-11-07 08:43:12,903 INFO L78 Accepts]: Start accepts. Automaton has 1961 states and 2272 transitions. Word has length 9 [2021-11-07 08:43:12,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:43:12,913 INFO L470 AbstractCegarLoop]: Abstraction has 1961 states and 2272 transitions. [2021-11-07 08:43:12,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 08:43:12,914 INFO L276 IsEmpty]: Start isEmpty. Operand 1961 states and 2272 transitions. [2021-11-07 08:43:12,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-07 08:43:12,914 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:43:12,915 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:43:12,930 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 08:43:13,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 08:43:13,130 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr640REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-07 08:43:13,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:43:13,132 INFO L85 PathProgramCache]: Analyzing trace with hash 429420143, now seen corresponding path program 1 times [2021-11-07 08:43:13,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:43:13,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1092609385] [2021-11-07 08:43:13,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:43:13,133 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:43:13,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 08:43:13,134 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:43:13,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 08:43:13,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:43:13,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 08:43:13,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:43:13,411 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 08:43:13,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:43:13,454 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 08:43:13,455 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:43:13,455 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1092609385] [2021-11-07 08:43:13,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1092609385] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 08:43:13,455 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:43:13,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 08:43:13,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118578422] [2021-11-07 08:43:13,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:43:13,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:43:13,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:43:13,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:43:13,457 INFO L87 Difference]: Start difference. First operand 1961 states and 2272 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 08:43:13,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:43:13,670 INFO L93 Difference]: Finished difference Result 3512 states and 4106 transitions. [2021-11-07 08:43:13,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:43:13,671 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-11-07 08:43:13,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:43:13,691 INFO L225 Difference]: With dead ends: 3512 [2021-11-07 08:43:13,691 INFO L226 Difference]: Without dead ends: 3512 [2021-11-07 08:43:13,692 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 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 08:43:13,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3512 states. [2021-11-07 08:43:13,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3512 to 2895. [2021-11-07 08:43:13,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2895 states, 2061 states have (on average 1.9718583212032994) internal successors, (4064), 2874 states have internal predecessors, (4064), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 16 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-07 08:43:13,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2895 states to 2895 states and 4105 transitions. [2021-11-07 08:43:13,789 INFO L78 Accepts]: Start accepts. Automaton has 2895 states and 4105 transitions. Word has length 10 [2021-11-07 08:43:13,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:43:13,789 INFO L470 AbstractCegarLoop]: Abstraction has 2895 states and 4105 transitions. [2021-11-07 08:43:13,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 08:43:13,789 INFO L276 IsEmpty]: Start isEmpty. Operand 2895 states and 4105 transitions. [2021-11-07 08:43:13,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-07 08:43:13,790 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:43:13,790 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:43:13,806 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 08:43:14,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 08:43:14,008 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr4REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-07 08:43:14,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:43:14,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1992388696, now seen corresponding path program 1 times [2021-11-07 08:43:14,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:43:14,009 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1614856572] [2021-11-07 08:43:14,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:43:14,009 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:43:14,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 08:43:14,010 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:43:14,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 08:43:14,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:43:14,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 08:43:14,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:43:14,298 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 08:43:14,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:43:14,346 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 08:43:14,346 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:43:14,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1614856572] [2021-11-07 08:43:14,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1614856572] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 08:43:14,347 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:43:14,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 08:43:14,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775447294] [2021-11-07 08:43:14,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:43:14,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:43:14,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:43:14,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:43:14,349 INFO L87 Difference]: Start difference. First operand 2895 states and 4105 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 08:43:14,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:43:14,433 INFO L93 Difference]: Finished difference Result 2835 states and 4019 transitions. [2021-11-07 08:43:14,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:43:14,434 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-11-07 08:43:14,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:43:14,452 INFO L225 Difference]: With dead ends: 2835 [2021-11-07 08:43:14,452 INFO L226 Difference]: Without dead ends: 2835 [2021-11-07 08:43:14,453 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 27 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 08:43:14,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2835 states. [2021-11-07 08:43:14,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2835 to 2835. [2021-11-07 08:43:14,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2835 states, 2025 states have (on average 1.9644444444444444) internal successors, (3978), 2814 states have internal predecessors, (3978), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 16 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-07 08:43:14,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2835 states to 2835 states and 4019 transitions. [2021-11-07 08:43:14,535 INFO L78 Accepts]: Start accepts. Automaton has 2835 states and 4019 transitions. Word has length 15 [2021-11-07 08:43:14,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:43:14,536 INFO L470 AbstractCegarLoop]: Abstraction has 2835 states and 4019 transitions. [2021-11-07 08:43:14,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 08:43:14,536 INFO L276 IsEmpty]: Start isEmpty. Operand 2835 states and 4019 transitions. [2021-11-07 08:43:14,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-07 08:43:14,537 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:43:14,537 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 08:43:14,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 08:43:14,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 08:43:14,755 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr29REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-07 08:43:14,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:43:14,756 INFO L85 PathProgramCache]: Analyzing trace with hash 869875523, now seen corresponding path program 1 times [2021-11-07 08:43:14,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:43:14,757 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [233071906] [2021-11-07 08:43:14,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:43:14,758 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:43:14,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 08:43:14,759 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:43:14,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 08:43:15,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:43:15,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 08:43:15,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:43:15,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:43:15,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:43:15,164 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 08:43:15,165 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:43:15,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [233071906] [2021-11-07 08:43:15,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [233071906] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 08:43:15,165 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:43:15,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 08:43:15,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622211549] [2021-11-07 08:43:15,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 08:43:15,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:43:15,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 08:43:15,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:43:15,167 INFO L87 Difference]: Start difference. First operand 2835 states and 4019 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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 08:43:15,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:43:15,314 INFO L93 Difference]: Finished difference Result 2807 states and 3963 transitions. [2021-11-07 08:43:15,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:43:15,315 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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 17 [2021-11-07 08:43:15,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:43:15,335 INFO L225 Difference]: With dead ends: 2807 [2021-11-07 08:43:15,335 INFO L226 Difference]: Without dead ends: 2807 [2021-11-07 08:43:15,335 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 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 08:43:15,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2807 states. [2021-11-07 08:43:15,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2807 to 2805. [2021-11-07 08:43:15,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2805 states, 2009 states have (on average 1.951219512195122) internal successors, (3920), 2784 states have internal predecessors, (3920), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 16 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-07 08:43:15,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2805 states to 2805 states and 3961 transitions. [2021-11-07 08:43:15,426 INFO L78 Accepts]: Start accepts. Automaton has 2805 states and 3961 transitions. Word has length 17 [2021-11-07 08:43:15,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:43:15,427 INFO L470 AbstractCegarLoop]: Abstraction has 2805 states and 3961 transitions. [2021-11-07 08:43:15,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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 08:43:15,428 INFO L276 IsEmpty]: Start isEmpty. Operand 2805 states and 3961 transitions. [2021-11-07 08:43:15,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-07 08:43:15,430 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:43:15,430 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] [2021-11-07 08:43:15,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 08:43:15,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 08:43:15,644 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr42REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-07 08:43:15,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:43:15,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1247292016, now seen corresponding path program 1 times [2021-11-07 08:43:15,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:43:15,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1765478116] [2021-11-07 08:43:15,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:43:15,646 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:43:15,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 08:43:15,646 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:43:15,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 08:43:15,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:43:15,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 08:43:15,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:43:15,982 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 08:43:16,115 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 08:43:16,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:43:16,253 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 08:43:16,253 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:43:16,253 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1765478116] [2021-11-07 08:43:16,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1765478116] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 08:43:16,253 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:43:16,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 08:43:16,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772197173] [2021-11-07 08:43:16,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:43:16,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:43:16,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:43:16,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:43:16,256 INFO L87 Difference]: Start difference. First operand 2805 states and 3961 transitions. Second operand has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 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 08:43:21,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:43:21,872 INFO L93 Difference]: Finished difference Result 4419 states and 6013 transitions. [2021-11-07 08:43:21,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 08:43:21,873 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 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 31 [2021-11-07 08:43:21,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:43:21,897 INFO L225 Difference]: With dead ends: 4419 [2021-11-07 08:43:21,897 INFO L226 Difference]: Without dead ends: 4419 [2021-11-07 08:43:21,897 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:43:21,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4419 states. [2021-11-07 08:43:21,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4419 to 2801. [2021-11-07 08:43:22,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2801 states, 2009 states have (on average 1.947237431557989) internal successors, (3912), 2780 states have internal predecessors, (3912), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 16 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-07 08:43:22,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2801 states to 2801 states and 3953 transitions. [2021-11-07 08:43:22,008 INFO L78 Accepts]: Start accepts. Automaton has 2801 states and 3953 transitions. Word has length 31 [2021-11-07 08:43:22,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:43:22,008 INFO L470 AbstractCegarLoop]: Abstraction has 2801 states and 3953 transitions. [2021-11-07 08:43:22,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 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 08:43:22,009 INFO L276 IsEmpty]: Start isEmpty. Operand 2801 states and 3953 transitions. [2021-11-07 08:43:22,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-07 08:43:22,010 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:43:22,010 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] [2021-11-07 08:43:22,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 08:43:22,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 08:43:22,226 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr43REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-07 08:43:22,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:43:22,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1247292017, now seen corresponding path program 1 times [2021-11-07 08:43:22,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:43:22,227 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [84823443] [2021-11-07 08:43:22,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:43:22,227 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:43:22,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 08:43:22,229 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:43:22,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 08:43:22,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:43:22,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 08:43:22,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:43:22,500 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 08:43:22,791 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 08:43:22,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:43:23,301 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 08:43:23,301 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:43:23,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [84823443] [2021-11-07 08:43:23,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [84823443] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 08:43:23,302 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:43:23,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-07 08:43:23,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762165335] [2021-11-07 08:43:23,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 08:43:23,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:43:23,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 08:43:23,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 08:43:23,304 INFO L87 Difference]: Start difference. First operand 2801 states and 3953 transitions. Second operand has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 08:43:36,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:43:36,623 INFO L93 Difference]: Finished difference Result 3743 states and 4936 transitions. [2021-11-07 08:43:36,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 08:43:36,625 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2021-11-07 08:43:36,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:43:36,645 INFO L225 Difference]: With dead ends: 3743 [2021-11-07 08:43:36,645 INFO L226 Difference]: Without dead ends: 3743 [2021-11-07 08:43:36,646 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 08:43:36,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3743 states. [2021-11-07 08:43:36,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3743 to 2797. [2021-11-07 08:43:36,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2797 states, 2009 states have (on average 1.943255350920856) internal successors, (3904), 2776 states have internal predecessors, (3904), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 16 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-07 08:43:36,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2797 states to 2797 states and 3945 transitions. [2021-11-07 08:43:36,721 INFO L78 Accepts]: Start accepts. Automaton has 2797 states and 3945 transitions. Word has length 31 [2021-11-07 08:43:36,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:43:36,722 INFO L470 AbstractCegarLoop]: Abstraction has 2797 states and 3945 transitions. [2021-11-07 08:43:36,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 08:43:36,722 INFO L276 IsEmpty]: Start isEmpty. Operand 2797 states and 3945 transitions. [2021-11-07 08:43:36,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-07 08:43:36,724 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:43:36,724 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] [2021-11-07 08:43:36,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 08:43:36,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 08:43:36,939 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr107REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-07 08:43:36,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:43:36,939 INFO L85 PathProgramCache]: Analyzing trace with hash 931034612, now seen corresponding path program 1 times [2021-11-07 08:43:36,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:43:36,940 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1422757986] [2021-11-07 08:43:36,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:43:36,940 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:43:36,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 08:43:36,941 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:43:36,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 08:43:37,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:43:37,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 08:43:37,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:43:37,460 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 08:43:37,461 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:43:37,629 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 08:43:37,629 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:43:37,629 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1422757986] [2021-11-07 08:43:37,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1422757986] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 08:43:37,630 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:43:37,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 08:43:37,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228029535] [2021-11-07 08:43:37,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:43:37,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:43:37,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:43:37,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:43:37,632 INFO L87 Difference]: Start difference. First operand 2797 states and 3945 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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 08:43:37,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:43:37,713 INFO L93 Difference]: Finished difference Result 2785 states and 3925 transitions. [2021-11-07 08:43:37,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:43:37,714 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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 46 [2021-11-07 08:43:37,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:43:37,738 INFO L225 Difference]: With dead ends: 2785 [2021-11-07 08:43:37,738 INFO L226 Difference]: Without dead ends: 2785 [2021-11-07 08:43:37,739 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 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 08:43:37,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2785 states. [2021-11-07 08:43:37,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2785 to 2785. [2021-11-07 08:43:37,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2785 states, 1997 states have (on average 1.944917376064096) internal successors, (3884), 2764 states have internal predecessors, (3884), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 16 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-07 08:43:37,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2785 states to 2785 states and 3925 transitions. [2021-11-07 08:43:37,800 INFO L78 Accepts]: Start accepts. Automaton has 2785 states and 3925 transitions. Word has length 46 [2021-11-07 08:43:37,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:43:37,800 INFO L470 AbstractCegarLoop]: Abstraction has 2785 states and 3925 transitions. [2021-11-07 08:43:37,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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 08:43:37,800 INFO L276 IsEmpty]: Start isEmpty. Operand 2785 states and 3925 transitions. [2021-11-07 08:43:37,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-07 08:43:37,809 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:43:37,809 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] [2021-11-07 08:43:37,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 08:43:38,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 08:43:38,024 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr107REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-07 08:43:38,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:43:38,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1498564056, now seen corresponding path program 1 times [2021-11-07 08:43:38,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:43:38,026 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1407446236] [2021-11-07 08:43:38,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:43:38,026 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:43:38,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 08:43:38,027 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:43:38,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 08:43:38,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:43:38,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 08:43:38,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:43:38,934 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 08:43:38,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:43:39,349 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 08:43:39,349 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:43:39,349 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1407446236] [2021-11-07 08:43:39,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1407446236] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 08:43:39,350 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:43:39,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 08:43:39,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868558383] [2021-11-07 08:43:39,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:43:39,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:43:39,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:43:39,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:43:39,351 INFO L87 Difference]: Start difference. First operand 2785 states and 3925 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 08:43:39,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:43:39,622 INFO L93 Difference]: Finished difference Result 2974 states and 3960 transitions. [2021-11-07 08:43:39,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:43:39,624 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 54 [2021-11-07 08:43:39,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:43:39,635 INFO L225 Difference]: With dead ends: 2974 [2021-11-07 08:43:39,636 INFO L226 Difference]: Without dead ends: 2974 [2021-11-07 08:43:39,636 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 106 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 08:43:39,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2974 states. [2021-11-07 08:43:39,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2974 to 2601. [2021-11-07 08:43:39,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2601 states, 1813 states have (on average 1.9464975179260893) internal successors, (3529), 2580 states have internal predecessors, (3529), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 16 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-07 08:43:39,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2601 states to 2601 states and 3570 transitions. [2021-11-07 08:43:39,692 INFO L78 Accepts]: Start accepts. Automaton has 2601 states and 3570 transitions. Word has length 54 [2021-11-07 08:43:39,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:43:39,693 INFO L470 AbstractCegarLoop]: Abstraction has 2601 states and 3570 transitions. [2021-11-07 08:43:39,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 08:43:39,693 INFO L276 IsEmpty]: Start isEmpty. Operand 2601 states and 3570 transitions. [2021-11-07 08:43:39,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-07 08:43:39,694 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:43:39,694 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] [2021-11-07 08:43:39,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 08:43:39,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 08:43:39,911 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr61REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-07 08:43:39,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:43:39,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1939122981, now seen corresponding path program 1 times [2021-11-07 08:43:39,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:43:39,913 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1912457387] [2021-11-07 08:43:39,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:43:39,913 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:43:39,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 08:43:39,914 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:43:39,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 08:43:40,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:43:40,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 08:43:40,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:43:40,546 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 08:43:40,552 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 08:43:41,263 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-07 08:43:41,263 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 28 treesize of output 30 [2021-11-07 08:43:41,271 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-07 08:43:41,271 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 23 [2021-11-07 08:43:41,316 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 08:43:41,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:43:46,346 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 08:43:46,346 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:43:46,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1912457387] [2021-11-07 08:43:46,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1912457387] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 08:43:46,347 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:43:46,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-07 08:43:46,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414302549] [2021-11-07 08:43:46,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 08:43:46,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:43:46,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 08:43:46,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-07 08:43:46,349 INFO L87 Difference]: Start difference. First operand 2601 states and 3570 transitions. Second operand has 6 states, 5 states have (on average 21.0) internal successors, (105), 6 states have internal predecessors, (105), 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 08:44:13,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:44:13,012 INFO L93 Difference]: Finished difference Result 4221 states and 5706 transitions. [2021-11-07 08:44:13,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 08:44:13,014 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 21.0) internal successors, (105), 6 states have internal predecessors, (105), 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 57 [2021-11-07 08:44:13,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:44:13,025 INFO L225 Difference]: With dead ends: 4221 [2021-11-07 08:44:13,025 INFO L226 Difference]: Without dead ends: 4221 [2021-11-07 08:44:13,026 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=26, Invalid=28, Unknown=2, NotChecked=0, Total=56 [2021-11-07 08:44:13,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4221 states. [2021-11-07 08:44:13,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4221 to 2741. [2021-11-07 08:44:13,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2741 states, 1991 states have (on average 1.9010547463586138) internal successors, (3785), 2714 states have internal predecessors, (3785), 27 states have call successors, (27), 5 states have call predecessors, (27), 4 states have return successors, (26), 22 states have call predecessors, (26), 26 states have call successors, (26) [2021-11-07 08:44:13,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2741 states to 2741 states and 3838 transitions. [2021-11-07 08:44:13,085 INFO L78 Accepts]: Start accepts. Automaton has 2741 states and 3838 transitions. Word has length 57 [2021-11-07 08:44:13,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:44:13,085 INFO L470 AbstractCegarLoop]: Abstraction has 2741 states and 3838 transitions. [2021-11-07 08:44:13,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 21.0) internal successors, (105), 6 states have internal predecessors, (105), 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 08:44:13,086 INFO L276 IsEmpty]: Start isEmpty. Operand 2741 states and 3838 transitions. [2021-11-07 08:44:13,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-07 08:44:13,087 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:44:13,087 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 08:44:13,106 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 08:44:13,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 08:44:13,303 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr66REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-07 08:44:13,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:44:13,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1549669755, now seen corresponding path program 1 times [2021-11-07 08:44:13,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:44:13,304 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [172044850] [2021-11-07 08:44:13,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:44:13,304 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:44:13,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 08:44:13,305 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:44:13,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 08:44:13,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:44:13,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 08:44:13,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:44:13,927 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 08:44:13,945 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2021-11-07 08:44:13,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-07 08:44:14,010 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 08:44:14,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:44:14,176 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 08:44:14,176 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:44:14,176 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [172044850] [2021-11-07 08:44:14,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [172044850] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 08:44:14,177 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:44:14,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 08:44:14,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234146353] [2021-11-07 08:44:14,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 08:44:14,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:44:14,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 08:44:14,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:44:14,178 INFO L87 Difference]: Start difference. First operand 2741 states and 3838 transitions. Second operand has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 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 08:44:20,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:44:20,336 INFO L93 Difference]: Finished difference Result 2740 states and 3836 transitions. [2021-11-07 08:44:20,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 08:44:20,336 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 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 62 [2021-11-07 08:44:20,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:44:20,343 INFO L225 Difference]: With dead ends: 2740 [2021-11-07 08:44:20,343 INFO L226 Difference]: Without dead ends: 2740 [2021-11-07 08:44:20,343 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 118 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-07 08:44:20,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2740 states. [2021-11-07 08:44:20,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2740 to 2740. [2021-11-07 08:44:20,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2740 states, 1991 states have (on average 1.9000502260170768) internal successors, (3783), 2713 states have internal predecessors, (3783), 27 states have call successors, (27), 5 states have call predecessors, (27), 4 states have return successors, (26), 22 states have call predecessors, (26), 26 states have call successors, (26) [2021-11-07 08:44:20,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2740 states to 2740 states and 3836 transitions. [2021-11-07 08:44:20,414 INFO L78 Accepts]: Start accepts. Automaton has 2740 states and 3836 transitions. Word has length 62 [2021-11-07 08:44:20,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:44:20,415 INFO L470 AbstractCegarLoop]: Abstraction has 2740 states and 3836 transitions. [2021-11-07 08:44:20,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 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 08:44:20,416 INFO L276 IsEmpty]: Start isEmpty. Operand 2740 states and 3836 transitions. [2021-11-07 08:44:20,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-07 08:44:20,417 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:44:20,417 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 08:44:20,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-07 08:44:20,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 08:44:20,632 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr67REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-07 08:44:20,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:44:20,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1549669756, now seen corresponding path program 1 times [2021-11-07 08:44:20,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:44:20,634 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1016911690] [2021-11-07 08:44:20,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:44:20,634 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:44:20,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 08:44:20,635 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:44:20,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 08:44:21,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:44:21,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 08:44:21,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:44:21,348 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 08:44:21,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-07 08:44:21,406 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-07 08:44:21,493 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-11-07 08:44:21,497 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-07 08:44:21,524 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 08:44:21,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:44:21,893 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 08:44:21,894 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:44:21,894 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1016911690] [2021-11-07 08:44:21,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1016911690] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 08:44:21,894 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:44:21,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-07 08:44:21,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151784206] [2021-11-07 08:44:21,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 08:44:21,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:44:21,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 08:44:21,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 08:44:21,896 INFO L87 Difference]: Start difference. First operand 2740 states and 3836 transitions. Second operand has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 08:44:39,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:44:39,410 INFO L93 Difference]: Finished difference Result 2739 states and 3834 transitions. [2021-11-07 08:44:39,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 08:44:39,420 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 62 [2021-11-07 08:44:39,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:44:39,429 INFO L225 Difference]: With dead ends: 2739 [2021-11-07 08:44:39,430 INFO L226 Difference]: Without dead ends: 2739 [2021-11-07 08:44:39,430 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-07 08:44:39,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2739 states. [2021-11-07 08:44:39,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2739 to 2739. [2021-11-07 08:44:39,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2739 states, 1989 states have (on average 1.9009552538964303) internal successors, (3781), 2712 states have internal predecessors, (3781), 27 states have call successors, (27), 5 states have call predecessors, (27), 4 states have return successors, (26), 22 states have call predecessors, (26), 26 states have call successors, (26) [2021-11-07 08:44:39,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2739 states to 2739 states and 3834 transitions. [2021-11-07 08:44:39,484 INFO L78 Accepts]: Start accepts. Automaton has 2739 states and 3834 transitions. Word has length 62 [2021-11-07 08:44:39,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:44:39,484 INFO L470 AbstractCegarLoop]: Abstraction has 2739 states and 3834 transitions. [2021-11-07 08:44:39,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 08:44:39,485 INFO L276 IsEmpty]: Start isEmpty. Operand 2739 states and 3834 transitions. [2021-11-07 08:44:39,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-07 08:44:39,485 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:44:39,486 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 08:44:39,509 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 08:44:39,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 08:44:39,701 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-07 08:44:39,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:44:39,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1507172066, now seen corresponding path program 1 times [2021-11-07 08:44:39,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:44:39,703 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1784431535] [2021-11-07 08:44:39,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:44:39,703 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:44:39,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 08:44:39,704 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:44:39,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-07 08:44:40,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:44:40,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 08:44:40,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:44:40,463 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 08:44:40,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:44:40,641 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 08:44:40,641 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:44:40,641 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1784431535] [2021-11-07 08:44:40,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1784431535] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 08:44:40,642 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:44:40,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 08:44:40,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540458874] [2021-11-07 08:44:40,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 08:44:40,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:44:40,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 08:44:40,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 08:44:40,644 INFO L87 Difference]: Start difference. First operand 2739 states and 3834 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-07 08:44:40,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:44:40,790 INFO L93 Difference]: Finished difference Result 2749 states and 3852 transitions. [2021-11-07 08:44:40,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 08:44:40,796 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 70 [2021-11-07 08:44:40,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:44:40,806 INFO L225 Difference]: With dead ends: 2749 [2021-11-07 08:44:40,806 INFO L226 Difference]: Without dead ends: 2749 [2021-11-07 08:44:40,807 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-07 08:44:40,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2749 states. [2021-11-07 08:44:40,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2749 to 2749. [2021-11-07 08:44:40,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2749 states, 1997 states have (on average 1.899349023535303) internal successors, (3793), 2721 states have internal predecessors, (3793), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (32), 22 states have call predecessors, (32), 26 states have call successors, (32) [2021-11-07 08:44:40,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2749 states to 2749 states and 3852 transitions. [2021-11-07 08:44:40,869 INFO L78 Accepts]: Start accepts. Automaton has 2749 states and 3852 transitions. Word has length 70 [2021-11-07 08:44:40,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:44:40,870 INFO L470 AbstractCegarLoop]: Abstraction has 2749 states and 3852 transitions. [2021-11-07 08:44:40,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-07 08:44:40,870 INFO L276 IsEmpty]: Start isEmpty. Operand 2749 states and 3852 transitions. [2021-11-07 08:44:40,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-07 08:44:40,871 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:44:40,871 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:44:40,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-07 08:44:41,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 08:44:41,087 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-07 08:44:41,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:44:41,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1329602274, now seen corresponding path program 1 times [2021-11-07 08:44:41,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:44:41,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [72358854] [2021-11-07 08:44:41,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:44:41,089 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:44:41,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 08:44:41,090 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:44:41,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 08:44:41,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:44:41,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 08:44:41,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:44:41,886 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:44:41,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:44:42,165 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:44:42,166 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:44:42,166 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [72358854] [2021-11-07 08:44:42,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [72358854] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 08:44:42,166 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:44:42,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-11-07 08:44:42,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796617462] [2021-11-07 08:44:42,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 08:44:42,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:44:42,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 08:44:42,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-07 08:44:42,168 INFO L87 Difference]: Start difference. First operand 2749 states and 3852 transitions. Second operand has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-07 08:44:42,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:44:42,733 INFO L93 Difference]: Finished difference Result 2763 states and 3880 transitions. [2021-11-07 08:44:42,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-07 08:44:42,733 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 72 [2021-11-07 08:44:42,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:44:42,741 INFO L225 Difference]: With dead ends: 2763 [2021-11-07 08:44:42,741 INFO L226 Difference]: Without dead ends: 2759 [2021-11-07 08:44:42,741 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=193, Unknown=0, NotChecked=0, Total=306 [2021-11-07 08:44:42,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2759 states. [2021-11-07 08:44:42,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2759 to 2755. [2021-11-07 08:44:42,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2755 states, 2003 states have (on average 1.8976535197204194) internal successors, (3801), 2727 states have internal predecessors, (3801), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (32), 22 states have call predecessors, (32), 26 states have call successors, (32) [2021-11-07 08:44:42,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2755 states to 2755 states and 3860 transitions. [2021-11-07 08:44:42,789 INFO L78 Accepts]: Start accepts. Automaton has 2755 states and 3860 transitions. Word has length 72 [2021-11-07 08:44:42,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:44:42,790 INFO L470 AbstractCegarLoop]: Abstraction has 2755 states and 3860 transitions. [2021-11-07 08:44:42,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-07 08:44:42,790 INFO L276 IsEmpty]: Start isEmpty. Operand 2755 states and 3860 transitions. [2021-11-07 08:44:42,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-07 08:44:42,791 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:44:42,791 INFO L513 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:44:42,814 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-07 08:44:43,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 08:44:43,007 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-07 08:44:43,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:44:43,008 INFO L85 PathProgramCache]: Analyzing trace with hash -801825054, now seen corresponding path program 2 times [2021-11-07 08:44:43,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:44:43,009 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [202795754] [2021-11-07 08:44:43,009 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 08:44:43,009 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:44:43,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 08:44:43,011 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:44:43,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-07 08:44:43,809 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 08:44:43,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:44:43,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 08:44:43,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:44:44,131 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:44:44,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:44:44,742 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:44:44,742 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:44:44,742 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [202795754] [2021-11-07 08:44:44,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [202795754] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 08:44:44,743 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:44:44,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-11-07 08:44:44,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994886253] [2021-11-07 08:44:44,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-07 08:44:44,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:44:44,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-07 08:44:44,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-11-07 08:44:44,744 INFO L87 Difference]: Start difference. First operand 2755 states and 3860 transitions. Second operand has 18 states, 18 states have (on average 4.444444444444445) internal successors, (80), 18 states have internal predecessors, (80), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-07 08:44:46,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:44:46,651 INFO L93 Difference]: Finished difference Result 2783 states and 3928 transitions. [2021-11-07 08:44:46,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-07 08:44:46,654 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.444444444444445) internal successors, (80), 18 states have internal predecessors, (80), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 76 [2021-11-07 08:44:46,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:44:46,662 INFO L225 Difference]: With dead ends: 2783 [2021-11-07 08:44:46,662 INFO L226 Difference]: Without dead ends: 2779 [2021-11-07 08:44:46,663 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=457, Invalid=949, Unknown=0, NotChecked=0, Total=1406 [2021-11-07 08:44:46,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2779 states. [2021-11-07 08:44:46,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2779 to 2767. [2021-11-07 08:44:46,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2767 states, 2015 states have (on average 1.8942928039702234) internal successors, (3817), 2739 states have internal predecessors, (3817), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (32), 22 states have call predecessors, (32), 26 states have call successors, (32) [2021-11-07 08:44:46,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2767 states to 2767 states and 3876 transitions. [2021-11-07 08:44:46,717 INFO L78 Accepts]: Start accepts. Automaton has 2767 states and 3876 transitions. Word has length 76 [2021-11-07 08:44:46,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:44:46,717 INFO L470 AbstractCegarLoop]: Abstraction has 2767 states and 3876 transitions. [2021-11-07 08:44:46,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.444444444444445) internal successors, (80), 18 states have internal predecessors, (80), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-07 08:44:46,718 INFO L276 IsEmpty]: Start isEmpty. Operand 2767 states and 3876 transitions. [2021-11-07 08:44:46,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-07 08:44:46,719 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:44:46,719 INFO L513 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:44:46,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-07 08:44:46,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 08:44:46,942 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-07 08:44:46,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:44:46,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1969283358, now seen corresponding path program 3 times [2021-11-07 08:44:46,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:44:46,943 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [275509725] [2021-11-07 08:44:46,943 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 08:44:46,943 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:44:46,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 08:44:46,945 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:44:46,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-07 08:44:48,382 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-07 08:44:48,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:44:48,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-07 08:44:48,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:44:49,056 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:44:49,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:44:51,021 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:44:51,021 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:44:51,021 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [275509725] [2021-11-07 08:44:51,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [275509725] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 08:44:51,021 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:44:51,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2021-11-07 08:44:51,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137024228] [2021-11-07 08:44:51,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-07 08:44:51,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:44:51,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-07 08:44:51,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2021-11-07 08:44:51,023 INFO L87 Difference]: Start difference. First operand 2767 states and 3876 transitions. Second operand has 34 states, 34 states have (on average 2.823529411764706) internal successors, (96), 34 states have internal predecessors, (96), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-07 08:45:02,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:45:02,223 INFO L93 Difference]: Finished difference Result 2823 states and 4060 transitions. [2021-11-07 08:45:02,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-07 08:45:02,224 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.823529411764706) internal successors, (96), 34 states have internal predecessors, (96), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 84 [2021-11-07 08:45:02,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:45:02,232 INFO L225 Difference]: With dead ends: 2823 [2021-11-07 08:45:02,232 INFO L226 Difference]: Without dead ends: 2817 [2021-11-07 08:45:02,235 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=1377, Invalid=2783, Unknown=0, NotChecked=0, Total=4160 [2021-11-07 08:45:02,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2817 states. [2021-11-07 08:45:02,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2817 to 2791. [2021-11-07 08:45:02,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2791 states, 2039 states have (on average 1.8871996076508093) internal successors, (3848), 2763 states have internal predecessors, (3848), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (32), 22 states have call predecessors, (32), 26 states have call successors, (32) [2021-11-07 08:45:02,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2791 states to 2791 states and 3907 transitions. [2021-11-07 08:45:02,296 INFO L78 Accepts]: Start accepts. Automaton has 2791 states and 3907 transitions. Word has length 84 [2021-11-07 08:45:02,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:45:02,297 INFO L470 AbstractCegarLoop]: Abstraction has 2791 states and 3907 transitions. [2021-11-07 08:45:02,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.823529411764706) internal successors, (96), 34 states have internal predecessors, (96), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-07 08:45:02,297 INFO L276 IsEmpty]: Start isEmpty. Operand 2791 states and 3907 transitions. [2021-11-07 08:45:02,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-07 08:45:02,298 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:45:02,298 INFO L513 BasicCegarLoop]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:45:02,319 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-11-07 08:45:02,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 08:45:02,520 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-07 08:45:02,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:45:02,520 INFO L85 PathProgramCache]: Analyzing trace with hash -512549150, now seen corresponding path program 4 times [2021-11-07 08:45:02,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:45:02,522 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [919895246] [2021-11-07 08:45:02,522 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 08:45:02,522 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:45:02,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 08:45:02,523 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:45:02,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-07 08:45:03,460 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 08:45:03,460 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:45:03,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-07 08:45:03,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:45:04,915 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:45:04,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:45:09,729 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:45:09,729 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:45:09,729 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [919895246] [2021-11-07 08:45:09,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [919895246] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 08:45:09,729 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:45:09,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 66 [2021-11-07 08:45:09,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941141867] [2021-11-07 08:45:09,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-07 08:45:09,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:45:09,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-07 08:45:09,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1000, Invalid=3290, Unknown=0, NotChecked=0, Total=4290 [2021-11-07 08:45:09,734 INFO L87 Difference]: Start difference. First operand 2791 states and 3907 transitions. Second operand has 66 states, 66 states have (on average 1.9393939393939394) internal successors, (128), 66 states have internal predecessors, (128), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-07 08:45:29,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:45:29,176 INFO L93 Difference]: Finished difference Result 2883 states and 4172 transitions. [2021-11-07 08:45:29,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-11-07 08:45:29,177 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 1.9393939393939394) internal successors, (128), 66 states have internal predecessors, (128), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 100 [2021-11-07 08:45:29,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:45:29,188 INFO L225 Difference]: With dead ends: 2883 [2021-11-07 08:45:29,188 INFO L226 Difference]: Without dead ends: 2879 [2021-11-07 08:45:29,196 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2313 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=4503, Invalid=14679, Unknown=0, NotChecked=0, Total=19182 [2021-11-07 08:45:29,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2879 states. [2021-11-07 08:45:29,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2879 to 2821. [2021-11-07 08:45:29,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2821 states, 2069 states have (on average 1.8820686321894635) internal successors, (3894), 2793 states have internal predecessors, (3894), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (32), 22 states have call predecessors, (32), 26 states have call successors, (32) [2021-11-07 08:45:29,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2821 states to 2821 states and 3953 transitions. [2021-11-07 08:45:29,284 INFO L78 Accepts]: Start accepts. Automaton has 2821 states and 3953 transitions. Word has length 100 [2021-11-07 08:45:29,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:45:29,284 INFO L470 AbstractCegarLoop]: Abstraction has 2821 states and 3953 transitions. [2021-11-07 08:45:29,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 1.9393939393939394) internal successors, (128), 66 states have internal predecessors, (128), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-07 08:45:29,285 INFO L276 IsEmpty]: Start isEmpty. Operand 2821 states and 3953 transitions. [2021-11-07 08:45:29,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-07 08:45:29,286 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:45:29,286 INFO L513 BasicCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:45:29,304 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-07 08:45:29,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 08:45:29,504 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 928 more)] === [2021-11-07 08:45:29,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:45:29,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1331912990, now seen corresponding path program 5 times [2021-11-07 08:45:29,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:45:29,507 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [520346230] [2021-11-07 08:45:29,507 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 08:45:29,507 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:45:29,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 08:45:29,508 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:45:29,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b74a9876-1854-44cf-b2de-891be99f040f/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-07 08:45:31,318 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2021-11-07 08:45:31,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:45:31,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-07 08:45:31,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:45:31,374 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 08:45:31,623 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-07 08:45:31,623 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 27 [2021-11-07 08:45:31,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-11-07 08:45:31,978 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 30