./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX --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 7770ba1119c1ebb05279b2f71af570d7d6521032dfc344bf6d89fc60d99335e2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 10:39:24,000 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 10:39:24,002 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 10:39:24,035 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 10:39:24,035 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 10:39:24,037 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 10:39:24,039 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 10:39:24,041 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 10:39:24,044 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 10:39:24,045 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 10:39:24,046 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 10:39:24,048 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 10:39:24,048 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 10:39:24,050 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 10:39:24,051 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 10:39:24,053 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 10:39:24,054 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 10:39:24,056 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 10:39:24,058 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 10:39:24,061 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 10:39:24,063 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 10:39:24,067 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 10:39:24,069 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 10:39:24,070 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 10:39:24,075 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 10:39:24,081 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 10:39:24,082 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 10:39:24,083 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 10:39:24,085 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 10:39:24,086 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 10:39:24,088 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 10:39:24,089 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 10:39:24,091 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 10:39:24,093 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 10:39:24,094 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 10:39:24,095 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 10:39:24,096 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 10:39:24,096 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 10:39:24,096 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 10:39:24,097 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 10:39:24,098 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 10:39:24,099 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-09 10:39:24,148 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 10:39:24,154 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 10:39:24,155 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 10:39:24,155 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 10:39:24,163 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 10:39:24,167 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 10:39:24,167 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 10:39:24,168 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 10:39:24,168 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 10:39:24,168 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-09 10:39:24,170 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 10:39:24,170 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 10:39:24,171 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 10:39:24,171 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-09 10:39:24,171 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-09 10:39:24,172 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-09 10:39:24,172 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 10:39:24,172 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-09 10:39:24,172 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 10:39:24,173 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 10:39:24,173 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 10:39:24,173 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 10:39:24,173 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 10:39:24,174 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 10:39:24,174 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 10:39:24,174 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 10:39:24,174 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 10:39:24,175 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 10:39:24,175 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 10:39:24,175 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_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7770ba1119c1ebb05279b2f71af570d7d6521032dfc344bf6d89fc60d99335e2 [2021-11-09 10:39:24,452 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 10:39:24,476 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 10:39:24,479 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 10:39:24,481 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 10:39:24,482 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 10:39:24,483 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-2.i [2021-11-09 10:39:24,563 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/data/4c58a5b22/f41ce3411eff45619cc170e18e233414/FLAGfedf166f7 [2021-11-09 10:39:25,192 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 10:39:25,193 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-2.i [2021-11-09 10:39:25,225 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/data/4c58a5b22/f41ce3411eff45619cc170e18e233414/FLAGfedf166f7 [2021-11-09 10:39:25,435 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/data/4c58a5b22/f41ce3411eff45619cc170e18e233414 [2021-11-09 10:39:25,438 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 10:39:25,439 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-09 10:39:25,455 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 10:39:25,455 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 10:39:25,458 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 10:39:25,459 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:39:25" (1/1) ... [2021-11-09 10:39:25,460 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34a7fc77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:39:25, skipping insertion in model container [2021-11-09 10:39:25,461 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:39:25" (1/1) ... [2021-11-09 10:39:25,468 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 10:39:25,560 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 10:39:26,187 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_e3209f0a-1e30-4e7e-8642-780055fdad40/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-2.i[33021,33034] [2021-11-09 10:39:26,332 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_e3209f0a-1e30-4e7e-8642-780055fdad40/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-2.i[49681,49694] [2021-11-09 10:39:26,351 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 10:39:26,362 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) [2021-11-09 10:39:26,363 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@605f5923 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:39:26, skipping insertion in model container [2021-11-09 10:39:26,363 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 10:39:26,364 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-11-09 10:39:26,366 INFO L168 Benchmark]: Toolchain (without parser) took 925.60 ms. Allocated memory is still 115.3 MB. Free memory was 81.2 MB in the beginning and 75.2 MB in the end (delta: 6.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-09 10:39:26,367 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 115.3 MB. Free memory was 67.2 MB in the beginning and 67.1 MB in the end (delta: 63.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 10:39:26,368 INFO L168 Benchmark]: CACSL2BoogieTranslator took 908.84 ms. Allocated memory is still 115.3 MB. Free memory was 80.9 MB in the beginning and 75.2 MB in the end (delta: 5.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-09 10:39:26,371 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 115.3 MB. Free memory was 67.2 MB in the beginning and 67.1 MB in the end (delta: 63.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 908.84 ms. Allocated memory is still 115.3 MB. Free memory was 80.9 MB in the beginning and 75.2 MB in the end (delta: 5.7 MB). Peak memory consumption was 8.4 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_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX --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 7770ba1119c1ebb05279b2f71af570d7d6521032dfc344bf6d89fc60d99335e2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 10:39:28,870 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 10:39:28,874 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 10:39:28,952 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 10:39:28,953 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 10:39:28,958 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 10:39:28,960 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 10:39:28,967 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 10:39:28,970 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 10:39:28,977 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 10:39:28,979 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 10:39:28,981 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 10:39:28,982 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 10:39:28,985 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 10:39:28,987 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 10:39:28,993 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 10:39:28,995 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 10:39:28,996 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 10:39:28,999 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 10:39:29,008 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 10:39:29,010 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 10:39:29,012 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 10:39:29,014 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 10:39:29,017 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 10:39:29,027 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 10:39:29,028 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 10:39:29,029 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 10:39:29,031 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 10:39:29,032 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 10:39:29,033 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 10:39:29,034 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 10:39:29,035 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 10:39:29,038 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 10:39:29,039 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 10:39:29,040 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 10:39:29,041 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 10:39:29,042 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 10:39:29,043 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 10:39:29,043 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 10:39:29,045 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 10:39:29,046 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 10:39:29,048 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-09 10:39:29,096 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 10:39:29,096 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 10:39:29,097 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 10:39:29,097 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 10:39:29,100 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 10:39:29,100 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 10:39:29,101 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 10:39:29,101 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 10:39:29,101 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 10:39:29,101 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-09 10:39:29,103 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 10:39:29,103 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 10:39:29,103 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 10:39:29,104 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-09 10:39:29,104 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-09 10:39:29,104 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-09 10:39:29,104 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 10:39:29,105 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-09 10:39:29,105 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-09 10:39:29,105 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-09 10:39:29,105 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 10:39:29,106 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 10:39:29,106 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 10:39:29,106 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 10:39:29,107 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 10:39:29,107 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 10:39:29,108 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 10:39:29,108 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 10:39:29,108 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-09 10:39:29,108 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-09 10:39:29,109 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 10:39:29,109 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-09 10:39:29,109 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_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7770ba1119c1ebb05279b2f71af570d7d6521032dfc344bf6d89fc60d99335e2 [2021-11-09 10:39:29,631 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 10:39:29,672 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 10:39:29,675 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 10:39:29,676 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 10:39:29,677 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 10:39:29,680 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-2.i [2021-11-09 10:39:29,766 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/data/fa99f811a/ae251262a3b243bcbcc0f7c5eaca79a3/FLAGcbaf54152 [2021-11-09 10:39:30,536 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 10:39:30,537 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-2.i [2021-11-09 10:39:30,559 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/data/fa99f811a/ae251262a3b243bcbcc0f7c5eaca79a3/FLAGcbaf54152 [2021-11-09 10:39:30,645 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/data/fa99f811a/ae251262a3b243bcbcc0f7c5eaca79a3 [2021-11-09 10:39:30,648 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 10:39:30,649 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-09 10:39:30,651 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 10:39:30,651 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 10:39:30,662 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 10:39:30,663 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:39:30" (1/1) ... [2021-11-09 10:39:30,665 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a0a6804 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:39:30, skipping insertion in model container [2021-11-09 10:39:30,665 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:39:30" (1/1) ... [2021-11-09 10:39:30,674 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 10:39:30,766 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 10:39:31,351 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_e3209f0a-1e30-4e7e-8642-780055fdad40/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-2.i[33021,33034] [2021-11-09 10:39:31,613 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_e3209f0a-1e30-4e7e-8642-780055fdad40/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-2.i[49681,49694] [2021-11-09 10:39:31,650 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 10:39:31,665 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-09 10:39:31,691 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 10:39:31,722 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_e3209f0a-1e30-4e7e-8642-780055fdad40/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-2.i[33021,33034] [2021-11-09 10:39:31,879 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_e3209f0a-1e30-4e7e-8642-780055fdad40/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-2.i[49681,49694] [2021-11-09 10:39:31,895 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 10:39:31,906 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 10:39:31,955 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_e3209f0a-1e30-4e7e-8642-780055fdad40/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-2.i[33021,33034] [2021-11-09 10:39:32,054 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_e3209f0a-1e30-4e7e-8642-780055fdad40/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-2.i[49681,49694] [2021-11-09 10:39:32,064 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 10:39:32,131 INFO L208 MainTranslator]: Completed translation [2021-11-09 10:39:32,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:39:32 WrapperNode [2021-11-09 10:39:32,132 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 10:39:32,133 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 10:39:32,134 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 10:39:32,134 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 10:39:32,146 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:39:32" (1/1) ... [2021-11-09 10:39:32,146 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:39:32" (1/1) ... [2021-11-09 10:39:32,221 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:39:32" (1/1) ... [2021-11-09 10:39:32,222 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:39:32" (1/1) ... [2021-11-09 10:39:32,347 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:39:32" (1/1) ... [2021-11-09 10:39:32,377 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:39:32" (1/1) ... [2021-11-09 10:39:32,388 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:39:32" (1/1) ... [2021-11-09 10:39:32,408 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 10:39:32,417 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 10:39:32,417 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 10:39:32,417 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 10:39:32,418 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:39:32" (1/1) ... [2021-11-09 10:39:32,442 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 10:39:32,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:39:32,484 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 10:39:32,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 10:39:32,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-09 10:39:32,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 10:39:32,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-11-09 10:39:32,540 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-09 10:39:32,540 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-09 10:39:32,540 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-09 10:39:32,540 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-09 10:39:32,540 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-09 10:39:32,540 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-09 10:39:32,540 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-09 10:39:32,541 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2021-11-09 10:39:32,541 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-09 10:39:32,541 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-09 10:39:32,541 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-11-09 10:39:32,541 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-11-09 10:39:32,542 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-11-09 10:39:32,542 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-11-09 10:39:32,542 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-09 10:39:32,542 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-11-09 10:39:32,542 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-11-09 10:39:32,542 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-09 10:39:32,542 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-11-09 10:39:32,543 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-11-09 10:39:32,543 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-11-09 10:39:32,543 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-09 10:39:32,543 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-11-09 10:39:32,543 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-11-09 10:39:32,543 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-11-09 10:39:32,543 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-11-09 10:39:32,544 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-11-09 10:39:32,544 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-11-09 10:39:32,544 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-11-09 10:39:32,544 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-09 10:39:32,544 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-11-09 10:39:32,544 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-11-09 10:39:32,544 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-11-09 10:39:32,545 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-11-09 10:39:32,545 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-11-09 10:39:32,545 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-11-09 10:39:32,545 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-11-09 10:39:32,545 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-11-09 10:39:32,545 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-11-09 10:39:32,545 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-11-09 10:39:32,545 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-11-09 10:39:32,546 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-11-09 10:39:32,546 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-11-09 10:39:32,546 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-11-09 10:39:32,546 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-11-09 10:39:32,546 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-11-09 10:39:32,547 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-11-09 10:39:32,547 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-11-09 10:39:32,547 INFO L130 BoogieDeclarations]: Found specification of procedure ffsl [2021-11-09 10:39:32,547 INFO L130 BoogieDeclarations]: Found specification of procedure ffsll [2021-11-09 10:39:32,547 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-11-09 10:39:32,548 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-11-09 10:39:32,548 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp_l [2021-11-09 10:39:32,549 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp_l [2021-11-09 10:39:32,549 INFO L130 BoogieDeclarations]: Found specification of procedure explicit_bzero [2021-11-09 10:39:32,550 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-11-09 10:39:32,551 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-11-09 10:39:32,551 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-11-09 10:39:32,551 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-11-09 10:39:32,552 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-11-09 10:39:32,552 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-11-09 10:39:32,552 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-09 10:39:32,552 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-09 10:39:32,552 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-09 10:39:32,553 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-09 10:39:32,553 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-09 10:39:32,553 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-09 10:39:32,553 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-09 10:39:32,553 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-09 10:39:32,553 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-09 10:39:32,554 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-09 10:39:32,554 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-09 10:39:32,555 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-09 10:39:32,555 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-09 10:39:32,555 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-09 10:39:32,555 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-09 10:39:32,555 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-09 10:39:32,555 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-09 10:39:32,555 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-09 10:39:32,555 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-09 10:39:32,556 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-09 10:39:32,556 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-09 10:39:32,556 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-09 10:39:32,556 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-09 10:39:32,556 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-09 10:39:32,556 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-09 10:39:32,556 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-09 10:39:32,556 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-09 10:39:32,557 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-09 10:39:32,557 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-09 10:39:32,557 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-09 10:39:32,557 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-09 10:39:32,558 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-09 10:39:32,558 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-09 10:39:32,558 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-09 10:39:32,558 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-09 10:39:32,558 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-09 10:39:32,558 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-09 10:39:32,558 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-09 10:39:32,558 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-09 10:39:32,559 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-09 10:39:32,559 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-09 10:39:32,559 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-09 10:39:32,559 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-09 10:39:32,559 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-09 10:39:32,559 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-09 10:39:32,560 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-09 10:39:32,560 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-09 10:39:32,560 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-09 10:39:32,560 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-09 10:39:32,560 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-09 10:39:32,561 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-09 10:39:32,561 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-09 10:39:32,561 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-09 10:39:32,562 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-09 10:39:32,565 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-09 10:39:32,565 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-09 10:39:32,565 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-09 10:39:32,565 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-09 10:39:32,566 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-09 10:39:32,567 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-09 10:39:32,567 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-09 10:39:32,567 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-09 10:39:32,568 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-09 10:39:32,574 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-09 10:39:32,574 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-09 10:39:32,574 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-09 10:39:32,574 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-09 10:39:32,574 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-09 10:39:32,574 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-09 10:39:32,574 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-09 10:39:32,575 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-09 10:39:32,575 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-09 10:39:32,575 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-09 10:39:32,575 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-09 10:39:32,575 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-09 10:39:32,575 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-09 10:39:32,575 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-09 10:39:32,575 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-09 10:39:32,576 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-09 10:39:32,576 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-09 10:39:32,576 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-09 10:39:32,576 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-09 10:39:32,576 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-09 10:39:32,576 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-09 10:39:32,576 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-09 10:39:32,576 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-09 10:39:32,577 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-09 10:39:32,577 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-09 10:39:32,577 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-09 10:39:32,577 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-09 10:39:32,577 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-09 10:39:32,577 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-09 10:39:32,577 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-09 10:39:32,577 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-09 10:39:32,578 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-09 10:39:32,578 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-09 10:39:32,578 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-09 10:39:32,578 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-09 10:39:32,578 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-09 10:39:32,578 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-09 10:39:32,578 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-09 10:39:32,578 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-09 10:39:32,579 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-09 10:39:32,579 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-09 10:39:32,579 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-09 10:39:32,579 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-09 10:39:32,579 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-09 10:39:32,579 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-09 10:39:32,579 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-09 10:39:32,579 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-09 10:39:32,580 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-09 10:39:32,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 10:39:32,580 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-09 10:39:32,580 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2021-11-09 10:39:32,580 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-09 10:39:32,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-09 10:39:32,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-09 10:39:32,580 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-09 10:39:32,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-09 10:39:32,581 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-09 10:39:32,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-09 10:39:32,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-09 10:39:32,581 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-09 10:39:32,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-09 10:39:32,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-09 10:39:32,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 10:39:32,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-11-09 10:39:32,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-09 10:39:33,406 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-09 10:39:41,793 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 10:39:41,793 INFO L299 CfgBuilder]: Removed 92 assume(true) statements. [2021-11-09 10:39:41,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:39:41 BoogieIcfgContainer [2021-11-09 10:39:41,799 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 10:39:41,801 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 10:39:41,802 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 10:39:41,805 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 10:39:41,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:39:30" (1/3) ... [2021-11-09 10:39:41,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66b6a1c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:39:41, skipping insertion in model container [2021-11-09 10:39:41,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:39:32" (2/3) ... [2021-11-09 10:39:41,807 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66b6a1c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:39:41, skipping insertion in model container [2021-11-09 10:39:41,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:39:41" (3/3) ... [2021-11-09 10:39:41,809 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test5-2.i [2021-11-09 10:39:41,816 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 10:39:41,816 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 834 error locations. [2021-11-09 10:39:41,872 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 10:39:41,880 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 [2021-11-09 10:39:41,880 INFO L340 AbstractCegarLoop]: Starting to check reachability of 834 error locations. [2021-11-09 10:39:41,945 INFO L276 IsEmpty]: Start isEmpty. Operand has 1663 states, 815 states have (on average 2.245398773006135) internal successors, (1830), 1648 states have internal predecessors, (1830), 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) [2021-11-09 10:39:41,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-09 10:39:41,954 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:39:41,955 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:39:41,956 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 830 more)] === [2021-11-09 10:39:41,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:39:41,962 INFO L85 PathProgramCache]: Analyzing trace with hash -17023004, now seen corresponding path program 1 times [2021-11-09 10:39:41,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:39:41,977 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [894342335] [2021-11-09 10:39:41,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:39:41,979 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:39:41,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:39:41,983 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:39:42,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-09 10:39:42,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:39:42,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-09 10:39:42,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:39:42,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:39:42,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:39:42,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:39:42,474 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:39:42,474 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [894342335] [2021-11-09 10:39:42,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [894342335] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 10:39:42,475 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:39:42,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-09 10:39:42,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492411772] [2021-11-09 10:39:42,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-09 10:39:42,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:39:42,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-09 10:39:42,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 10:39:42,504 INFO L87 Difference]: Start difference. First operand has 1663 states, 815 states have (on average 2.245398773006135) internal successors, (1830), 1648 states have internal predecessors, (1830), 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) [2021-11-09 10:39:42,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:39:42,616 INFO L93 Difference]: Finished difference Result 1645 states and 1739 transitions. [2021-11-09 10:39:42,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-09 10:39:42,618 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 [2021-11-09 10:39:42,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:39:42,656 INFO L225 Difference]: With dead ends: 1645 [2021-11-09 10:39:42,656 INFO L226 Difference]: Without dead ends: 1642 [2021-11-09 10:39:42,658 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 [2021-11-09 10:39:42,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1642 states. [2021-11-09 10:39:42,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1642 to 1642. [2021-11-09 10:39:42,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1642 states, 806 states have (on average 2.120347394540943) internal successors, (1709), 1628 states have internal predecessors, (1709), 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) [2021-11-09 10:39:42,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1642 states to 1642 states and 1736 transitions. [2021-11-09 10:39:42,860 INFO L78 Accepts]: Start accepts. Automaton has 1642 states and 1736 transitions. Word has length 9 [2021-11-09 10:39:42,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:39:42,861 INFO L470 AbstractCegarLoop]: Abstraction has 1642 states and 1736 transitions. [2021-11-09 10:39:42,861 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) [2021-11-09 10:39:42,862 INFO L276 IsEmpty]: Start isEmpty. Operand 1642 states and 1736 transitions. [2021-11-09 10:39:42,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-09 10:39:42,863 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:39:42,863 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:39:42,881 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-09 10:39:43,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:39:43,077 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 830 more)] === [2021-11-09 10:39:43,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:39:43,079 INFO L85 PathProgramCache]: Analyzing trace with hash -17022942, now seen corresponding path program 1 times [2021-11-09 10:39:43,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:39:43,080 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [890572945] [2021-11-09 10:39:43,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:39:43,081 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:39:43,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:39:43,082 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:39:43,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-09 10:39:43,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:39:43,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 10:39:43,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:39:43,510 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 [2021-11-09 10:39:43,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:39:43,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:39:43,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:39:43,578 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:39:43,578 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [890572945] [2021-11-09 10:39:43,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [890572945] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 10:39:43,579 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:39:43,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-09 10:39:43,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488464414] [2021-11-09 10:39:43,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:39:43,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:39:43,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:39:43,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:39:43,582 INFO L87 Difference]: Start difference. First operand 1642 states and 1736 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) [2021-11-09 10:39:47,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:39:47,812 INFO L93 Difference]: Finished difference Result 1887 states and 2015 transitions. [2021-11-09 10:39:47,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:39:47,813 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 [2021-11-09 10:39:47,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:39:47,827 INFO L225 Difference]: With dead ends: 1887 [2021-11-09 10:39:47,827 INFO L226 Difference]: Without dead ends: 1887 [2021-11-09 10:39:47,828 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 [2021-11-09 10:39:47,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1887 states. [2021-11-09 10:39:47,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1887 to 1627. [2021-11-09 10:39:47,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1627 states, 882 states have (on average 1.9875283446712018) internal successors, (1753), 1613 states have internal predecessors, (1753), 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) [2021-11-09 10:39:47,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1627 states to 1627 states and 1780 transitions. [2021-11-09 10:39:47,893 INFO L78 Accepts]: Start accepts. Automaton has 1627 states and 1780 transitions. Word has length 9 [2021-11-09 10:39:47,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:39:47,893 INFO L470 AbstractCegarLoop]: Abstraction has 1627 states and 1780 transitions. [2021-11-09 10:39:47,894 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) [2021-11-09 10:39:47,895 INFO L276 IsEmpty]: Start isEmpty. Operand 1627 states and 1780 transitions. [2021-11-09 10:39:47,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-09 10:39:47,895 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:39:47,896 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:39:47,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-09 10:39:48,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:39:48,110 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr1REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 830 more)] === [2021-11-09 10:39:48,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:39:48,110 INFO L85 PathProgramCache]: Analyzing trace with hash -17022941, now seen corresponding path program 1 times [2021-11-09 10:39:48,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:39:48,111 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [89442849] [2021-11-09 10:39:48,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:39:48,111 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:39:48,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:39:48,115 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:39:48,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-09 10:39:48,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:39:48,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 10:39:48,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:39:48,378 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 [2021-11-09 10:39:48,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:39:48,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:39:48,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:39:48,524 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:39:48,524 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [89442849] [2021-11-09 10:39:48,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [89442849] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 10:39:48,525 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:39:48,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-09 10:39:48,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329560808] [2021-11-09 10:39:48,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:39:48,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:39:48,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:39:48,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:39:48,538 INFO L87 Difference]: Start difference. First operand 1627 states and 1780 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) [2021-11-09 10:39:56,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:39:56,365 INFO L93 Difference]: Finished difference Result 2187 states and 2382 transitions. [2021-11-09 10:39:56,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 10:39:56,366 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 [2021-11-09 10:39:56,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:39:56,379 INFO L225 Difference]: With dead ends: 2187 [2021-11-09 10:39:56,379 INFO L226 Difference]: Without dead ends: 2187 [2021-11-09 10:39:56,382 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 [2021-11-09 10:39:56,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2187 states. [2021-11-09 10:39:56,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2187 to 1783. [2021-11-09 10:39:56,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1783 states, 1048 states have (on average 1.9646946564885497) internal successors, (2059), 1769 states have internal predecessors, (2059), 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) [2021-11-09 10:39:56,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1783 states to 1783 states and 2086 transitions. [2021-11-09 10:39:56,440 INFO L78 Accepts]: Start accepts. Automaton has 1783 states and 2086 transitions. Word has length 9 [2021-11-09 10:39:56,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:39:56,440 INFO L470 AbstractCegarLoop]: Abstraction has 1783 states and 2086 transitions. [2021-11-09 10:39:56,441 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) [2021-11-09 10:39:56,441 INFO L276 IsEmpty]: Start isEmpty. Operand 1783 states and 2086 transitions. [2021-11-09 10:39:56,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-09 10:39:56,441 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:39:56,442 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:39:56,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-09 10:39:56,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:39:56,656 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr640REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 830 more)] === [2021-11-09 10:39:56,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:39:56,657 INFO L85 PathProgramCache]: Analyzing trace with hash -526023829, now seen corresponding path program 1 times [2021-11-09 10:39:56,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:39:56,658 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1907292836] [2021-11-09 10:39:56,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:39:56,658 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:39:56,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:39:56,660 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:39:56,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-09 10:39:56,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:39:56,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 10:39:56,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:39:56,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:39:56,908 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:39:56,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:39:56,951 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:39:56,951 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1907292836] [2021-11-09 10:39:56,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1907292836] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 10:39:56,952 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:39:56,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-09 10:39:56,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17399643] [2021-11-09 10:39:56,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:39:56,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:39:56,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:39:56,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:39:56,956 INFO L87 Difference]: Start difference. First operand 1783 states and 2086 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) [2021-11-09 10:39:57,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:39:57,191 INFO L93 Difference]: Finished difference Result 3334 states and 3920 transitions. [2021-11-09 10:39:57,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 10:39:57,192 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 [2021-11-09 10:39:57,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:39:57,212 INFO L225 Difference]: With dead ends: 3334 [2021-11-09 10:39:57,212 INFO L226 Difference]: Without dead ends: 3334 [2021-11-09 10:39:57,213 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 [2021-11-09 10:39:57,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3334 states. [2021-11-09 10:39:57,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3334 to 2717. [2021-11-09 10:39:57,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2717 states, 1981 states have (on average 1.9575971731448762) internal successors, (3878), 2696 states have internal predecessors, (3878), 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) [2021-11-09 10:39:57,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2717 states to 2717 states and 3919 transitions. [2021-11-09 10:39:57,301 INFO L78 Accepts]: Start accepts. Automaton has 2717 states and 3919 transitions. Word has length 10 [2021-11-09 10:39:57,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:39:57,301 INFO L470 AbstractCegarLoop]: Abstraction has 2717 states and 3919 transitions. [2021-11-09 10:39:57,301 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) [2021-11-09 10:39:57,301 INFO L276 IsEmpty]: Start isEmpty. Operand 2717 states and 3919 transitions. [2021-11-09 10:39:57,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-09 10:39:57,302 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:39:57,302 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:39:57,322 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-09 10:39:57,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:39:57,514 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr4REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 830 more)] === [2021-11-09 10:39:57,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:39:57,514 INFO L85 PathProgramCache]: Analyzing trace with hash -247252948, now seen corresponding path program 1 times [2021-11-09 10:39:57,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:39:57,515 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [184441303] [2021-11-09 10:39:57,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:39:57,515 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:39:57,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:39:57,517 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:39:57,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-09 10:39:57,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:39:57,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 10:39:57,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:39:57,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:39:57,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:39:57,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:39:57,854 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:39:57,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [184441303] [2021-11-09 10:39:57,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [184441303] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 10:39:57,855 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:39:57,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-09 10:39:57,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903933748] [2021-11-09 10:39:57,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:39:57,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:39:57,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:39:57,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:39:57,857 INFO L87 Difference]: Start difference. First operand 2717 states and 3919 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) [2021-11-09 10:39:57,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:39:57,902 INFO L93 Difference]: Finished difference Result 2657 states and 3833 transitions. [2021-11-09 10:39:57,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:39:57,902 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 [2021-11-09 10:39:57,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:39:57,920 INFO L225 Difference]: With dead ends: 2657 [2021-11-09 10:39:57,920 INFO L226 Difference]: Without dead ends: 2657 [2021-11-09 10:39:57,920 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 [2021-11-09 10:39:57,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2657 states. [2021-11-09 10:39:57,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2657 to 2657. [2021-11-09 10:39:57,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2657 states, 1945 states have (on average 1.9496143958868895) internal successors, (3792), 2636 states have internal predecessors, (3792), 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) [2021-11-09 10:39:57,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2657 states to 2657 states and 3833 transitions. [2021-11-09 10:39:57,995 INFO L78 Accepts]: Start accepts. Automaton has 2657 states and 3833 transitions. Word has length 15 [2021-11-09 10:39:57,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:39:57,996 INFO L470 AbstractCegarLoop]: Abstraction has 2657 states and 3833 transitions. [2021-11-09 10:39:58,000 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) [2021-11-09 10:39:58,000 INFO L276 IsEmpty]: Start isEmpty. Operand 2657 states and 3833 transitions. [2021-11-09 10:39:58,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-09 10:39:58,001 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:39:58,001 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:39:58,018 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-09 10:39:58,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:39:58,214 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr29REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 830 more)] === [2021-11-09 10:39:58,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:39:58,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1386883385, now seen corresponding path program 1 times [2021-11-09 10:39:58,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:39:58,215 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [60634903] [2021-11-09 10:39:58,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:39:58,215 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:39:58,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:39:58,218 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:39:58,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-09 10:39:58,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:39:58,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 10:39:58,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:39:58,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:39:58,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:39:58,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:39:58,548 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:39:58,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [60634903] [2021-11-09 10:39:58,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [60634903] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 10:39:58,548 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:39:58,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-09 10:39:58,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317331037] [2021-11-09 10:39:58,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 10:39:58,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:39:58,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 10:39:58,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:39:58,550 INFO L87 Difference]: Start difference. First operand 2657 states and 3833 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) [2021-11-09 10:39:58,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:39:58,667 INFO L93 Difference]: Finished difference Result 2629 states and 3777 transitions. [2021-11-09 10:39:58,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 10:39:58,668 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 [2021-11-09 10:39:58,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:39:58,684 INFO L225 Difference]: With dead ends: 2629 [2021-11-09 10:39:58,685 INFO L226 Difference]: Without dead ends: 2629 [2021-11-09 10:39:58,685 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 [2021-11-09 10:39:58,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2629 states. [2021-11-09 10:39:58,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2629 to 2627. [2021-11-09 10:39:58,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2627 states, 1929 states have (on average 1.935717988595127) internal successors, (3734), 2606 states have internal predecessors, (3734), 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) [2021-11-09 10:39:58,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2627 states to 2627 states and 3775 transitions. [2021-11-09 10:39:58,771 INFO L78 Accepts]: Start accepts. Automaton has 2627 states and 3775 transitions. Word has length 17 [2021-11-09 10:39:58,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:39:58,772 INFO L470 AbstractCegarLoop]: Abstraction has 2627 states and 3775 transitions. [2021-11-09 10:39:58,772 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) [2021-11-09 10:39:58,772 INFO L276 IsEmpty]: Start isEmpty. Operand 2627 states and 3775 transitions. [2021-11-09 10:39:58,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-09 10:39:58,774 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:39:58,774 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] [2021-11-09 10:39:58,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-09 10:39:58,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:39:58,994 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr42REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 830 more)] === [2021-11-09 10:39:58,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:39:58,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1000557300, now seen corresponding path program 1 times [2021-11-09 10:39:58,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:39:58,996 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [283120884] [2021-11-09 10:39:58,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:39:58,996 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:39:58,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:39:58,997 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:39:59,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-09 10:39:59,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:39:59,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 10:39:59,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:39:59,312 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 [2021-11-09 10:39:59,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:39:59,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:39:59,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:39:59,556 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:39:59,556 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [283120884] [2021-11-09 10:39:59,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [283120884] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 10:39:59,556 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:39:59,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-09 10:39:59,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117435488] [2021-11-09 10:39:59,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:39:59,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:39:59,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:39:59,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:39:59,558 INFO L87 Difference]: Start difference. First operand 2627 states and 3775 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) [2021-11-09 10:40:04,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:40:04,060 INFO L93 Difference]: Finished difference Result 4072 states and 5650 transitions. [2021-11-09 10:40:04,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 10:40:04,061 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 [2021-11-09 10:40:04,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:40:04,084 INFO L225 Difference]: With dead ends: 4072 [2021-11-09 10:40:04,084 INFO L226 Difference]: Without dead ends: 4072 [2021-11-09 10:40:04,085 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 [2021-11-09 10:40:04,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4072 states. [2021-11-09 10:40:04,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4072 to 2623. [2021-11-09 10:40:04,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2623 states, 1929 states have (on average 1.931570762052877) internal successors, (3726), 2602 states have internal predecessors, (3726), 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) [2021-11-09 10:40:04,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2623 states to 2623 states and 3767 transitions. [2021-11-09 10:40:04,186 INFO L78 Accepts]: Start accepts. Automaton has 2623 states and 3767 transitions. Word has length 31 [2021-11-09 10:40:04,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:40:04,186 INFO L470 AbstractCegarLoop]: Abstraction has 2623 states and 3767 transitions. [2021-11-09 10:40:04,187 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) [2021-11-09 10:40:04,187 INFO L276 IsEmpty]: Start isEmpty. Operand 2623 states and 3767 transitions. [2021-11-09 10:40:04,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-09 10:40:04,188 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:40:04,188 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] [2021-11-09 10:40:04,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-09 10:40:04,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:40:04,403 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr43REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 830 more)] === [2021-11-09 10:40:04,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:40:04,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1000557301, now seen corresponding path program 1 times [2021-11-09 10:40:04,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:40:04,404 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2067112762] [2021-11-09 10:40:04,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:40:04,404 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:40:04,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:40:04,405 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:40:04,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-09 10:40:04,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:40:04,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 10:40:04,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:40:04,656 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 [2021-11-09 10:40:04,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:40:04,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:40:05,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:40:05,376 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:40:05,376 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2067112762] [2021-11-09 10:40:05,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2067112762] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 10:40:05,377 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:40:05,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-09 10:40:05,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227565644] [2021-11-09 10:40:05,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 10:40:05,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:40:05,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 10:40:05,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-09 10:40:05,378 INFO L87 Difference]: Start difference. First operand 2623 states and 3767 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) [2021-11-09 10:40:16,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:40:16,690 INFO L93 Difference]: Finished difference Result 3387 states and 4564 transitions. [2021-11-09 10:40:16,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 10:40:16,691 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 [2021-11-09 10:40:16,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:40:16,706 INFO L225 Difference]: With dead ends: 3387 [2021-11-09 10:40:16,706 INFO L226 Difference]: Without dead ends: 3387 [2021-11-09 10:40:16,707 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 [2021-11-09 10:40:16,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3387 states. [2021-11-09 10:40:16,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3387 to 2619. [2021-11-09 10:40:16,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2619 states, 1929 states have (on average 1.9274235355106273) internal successors, (3718), 2598 states have internal predecessors, (3718), 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) [2021-11-09 10:40:16,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2619 states to 2619 states and 3759 transitions. [2021-11-09 10:40:16,766 INFO L78 Accepts]: Start accepts. Automaton has 2619 states and 3759 transitions. Word has length 31 [2021-11-09 10:40:16,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:40:16,766 INFO L470 AbstractCegarLoop]: Abstraction has 2619 states and 3759 transitions. [2021-11-09 10:40:16,767 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) [2021-11-09 10:40:16,767 INFO L276 IsEmpty]: Start isEmpty. Operand 2619 states and 3759 transitions. [2021-11-09 10:40:16,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-09 10:40:16,768 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:40:16,769 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] [2021-11-09 10:40:16,789 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-09 10:40:16,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:40:16,982 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr107REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 830 more)] === [2021-11-09 10:40:16,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:40:16,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1312441104, now seen corresponding path program 1 times [2021-11-09 10:40:16,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:40:16,982 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [627322307] [2021-11-09 10:40:16,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:40:16,983 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:40:16,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:40:16,983 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:40:16,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-09 10:40:17,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:40:17,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 10:40:17,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:40:17,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:40:17,419 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:40:17,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:40:17,580 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:40:17,580 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [627322307] [2021-11-09 10:40:17,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [627322307] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 10:40:17,580 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:40:17,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-09 10:40:17,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559696453] [2021-11-09 10:40:17,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:40:17,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:40:17,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:40:17,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:40:17,582 INFO L87 Difference]: Start difference. First operand 2619 states and 3759 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) [2021-11-09 10:40:17,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:40:17,662 INFO L93 Difference]: Finished difference Result 2607 states and 3739 transitions. [2021-11-09 10:40:17,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 10:40:17,663 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 [2021-11-09 10:40:17,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:40:17,687 INFO L225 Difference]: With dead ends: 2607 [2021-11-09 10:40:17,687 INFO L226 Difference]: Without dead ends: 2607 [2021-11-09 10:40:17,687 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 [2021-11-09 10:40:17,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2607 states. [2021-11-09 10:40:17,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2607 to 2607. [2021-11-09 10:40:17,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2607 states, 1917 states have (on average 1.92905581637976) internal successors, (3698), 2586 states have internal predecessors, (3698), 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) [2021-11-09 10:40:17,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2607 states to 2607 states and 3739 transitions. [2021-11-09 10:40:17,742 INFO L78 Accepts]: Start accepts. Automaton has 2607 states and 3739 transitions. Word has length 46 [2021-11-09 10:40:17,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:40:17,743 INFO L470 AbstractCegarLoop]: Abstraction has 2607 states and 3739 transitions. [2021-11-09 10:40:17,743 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) [2021-11-09 10:40:17,743 INFO L276 IsEmpty]: Start isEmpty. Operand 2607 states and 3739 transitions. [2021-11-09 10:40:17,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-09 10:40:17,751 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:40:17,751 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] [2021-11-09 10:40:17,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-09 10:40:17,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:40:17,964 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr107REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 830 more)] === [2021-11-09 10:40:17,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:40:17,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1817426652, now seen corresponding path program 1 times [2021-11-09 10:40:17,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:40:17,966 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [558417740] [2021-11-09 10:40:17,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:40:17,966 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:40:17,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:40:17,967 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:40:17,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-09 10:40:18,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:40:18,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 10:40:18,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:40:18,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:40:18,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:40:19,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:40:19,359 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:40:19,359 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [558417740] [2021-11-09 10:40:19,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [558417740] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 10:40:19,360 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:40:19,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-09 10:40:19,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462312358] [2021-11-09 10:40:19,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:40:19,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:40:19,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:40:19,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:40:19,362 INFO L87 Difference]: Start difference. First operand 2607 states and 3739 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) [2021-11-09 10:40:19,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:40:19,598 INFO L93 Difference]: Finished difference Result 2618 states and 3588 transitions. [2021-11-09 10:40:19,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:40:19,599 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 [2021-11-09 10:40:19,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:40:19,608 INFO L225 Difference]: With dead ends: 2618 [2021-11-09 10:40:19,609 INFO L226 Difference]: Without dead ends: 2618 [2021-11-09 10:40:19,609 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 [2021-11-09 10:40:19,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2618 states. [2021-11-09 10:40:19,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2618 to 2423. [2021-11-09 10:40:19,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2423 states, 1733 states have (on average 1.9290248124639353) internal successors, (3343), 2402 states have internal predecessors, (3343), 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) [2021-11-09 10:40:19,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2423 states to 2423 states and 3384 transitions. [2021-11-09 10:40:19,659 INFO L78 Accepts]: Start accepts. Automaton has 2423 states and 3384 transitions. Word has length 54 [2021-11-09 10:40:19,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:40:19,660 INFO L470 AbstractCegarLoop]: Abstraction has 2423 states and 3384 transitions. [2021-11-09 10:40:19,660 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) [2021-11-09 10:40:19,660 INFO L276 IsEmpty]: Start isEmpty. Operand 2423 states and 3384 transitions. [2021-11-09 10:40:19,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-09 10:40:19,661 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:40:19,661 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] [2021-11-09 10:40:19,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-09 10:40:19,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:40:19,892 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr61REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 830 more)] === [2021-11-09 10:40:19,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:40:19,893 INFO L85 PathProgramCache]: Analyzing trace with hash -707061665, now seen corresponding path program 1 times [2021-11-09 10:40:19,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:40:19,894 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1492516281] [2021-11-09 10:40:19,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:40:19,894 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:40:19,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:40:19,896 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:40:19,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-09 10:40:20,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:40:20,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-09 10:40:20,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:40:20,620 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 [2021-11-09 10:40:20,630 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 [2021-11-09 10:40:21,437 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-09 10:40:21,437 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 27 [2021-11-09 10:40:21,445 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-09 10:40:21,446 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 20 [2021-11-09 10:40:21,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:40:21,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:40:26,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:40:26,519 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:40:26,519 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1492516281] [2021-11-09 10:40:26,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1492516281] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 10:40:26,520 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:40:26,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-09 10:40:26,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227211089] [2021-11-09 10:40:26,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 10:40:26,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:40:26,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 10:40:26,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-09 10:40:26,522 INFO L87 Difference]: Start difference. First operand 2423 states and 3384 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) [2021-11-09 10:40:51,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:40:51,684 INFO L93 Difference]: Finished difference Result 4043 states and 5520 transitions. [2021-11-09 10:40:51,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 10:40:51,686 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 [2021-11-09 10:40:51,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:40:51,697 INFO L225 Difference]: With dead ends: 4043 [2021-11-09 10:40:51,697 INFO L226 Difference]: Without dead ends: 4043 [2021-11-09 10:40:51,697 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 [2021-11-09 10:40:51,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4043 states. [2021-11-09 10:40:51,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4043 to 2563. [2021-11-09 10:40:51,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2563 states, 1911 states have (on average 1.8833071690214547) internal successors, (3599), 2536 states have internal predecessors, (3599), 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) [2021-11-09 10:40:51,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2563 states to 2563 states and 3652 transitions. [2021-11-09 10:40:51,761 INFO L78 Accepts]: Start accepts. Automaton has 2563 states and 3652 transitions. Word has length 57 [2021-11-09 10:40:51,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:40:51,761 INFO L470 AbstractCegarLoop]: Abstraction has 2563 states and 3652 transitions. [2021-11-09 10:40:51,762 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) [2021-11-09 10:40:51,762 INFO L276 IsEmpty]: Start isEmpty. Operand 2563 states and 3652 transitions. [2021-11-09 10:40:51,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-09 10:40:51,763 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:40:51,763 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] [2021-11-09 10:40:51,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-09 10:40:51,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:40:51,979 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr66REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 830 more)] === [2021-11-09 10:40:51,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:40:51,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1116726391, now seen corresponding path program 1 times [2021-11-09 10:40:51,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:40:51,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [87248211] [2021-11-09 10:40:51,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:40:51,981 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:40:51,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:40:51,984 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:40:52,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-09 10:40:52,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:40:52,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-09 10:40:52,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:40:52,689 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 [2021-11-09 10:40:52,704 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 [2021-11-09 10:40:52,751 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 [2021-11-09 10:40:52,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:40:52,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:40:52,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:40:52,927 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:40:52,927 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [87248211] [2021-11-09 10:40:52,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [87248211] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 10:40:52,928 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:40:52,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-09 10:40:52,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406515772] [2021-11-09 10:40:52,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 10:40:52,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:40:52,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 10:40:52,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:40:52,930 INFO L87 Difference]: Start difference. First operand 2563 states and 3652 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) [2021-11-09 10:40:58,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:40:58,416 INFO L93 Difference]: Finished difference Result 2562 states and 3650 transitions. [2021-11-09 10:40:58,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 10:40:58,417 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 [2021-11-09 10:40:58,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:40:58,423 INFO L225 Difference]: With dead ends: 2562 [2021-11-09 10:40:58,423 INFO L226 Difference]: Without dead ends: 2562 [2021-11-09 10:40:58,424 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 117 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-09 10:40:58,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2562 states. [2021-11-09 10:40:58,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2562 to 2562. [2021-11-09 10:40:58,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2562 states, 1911 states have (on average 1.8822605965463108) internal successors, (3597), 2535 states have internal predecessors, (3597), 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) [2021-11-09 10:40:58,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2562 states to 2562 states and 3650 transitions. [2021-11-09 10:40:58,466 INFO L78 Accepts]: Start accepts. Automaton has 2562 states and 3650 transitions. Word has length 62 [2021-11-09 10:40:58,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:40:58,470 INFO L470 AbstractCegarLoop]: Abstraction has 2562 states and 3650 transitions. [2021-11-09 10:40:58,471 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) [2021-11-09 10:40:58,471 INFO L276 IsEmpty]: Start isEmpty. Operand 2562 states and 3650 transitions. [2021-11-09 10:40:58,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-09 10:40:58,472 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:40:58,472 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] [2021-11-09 10:40:58,494 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-09 10:40:58,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:40:58,687 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr67REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 830 more)] === [2021-11-09 10:40:58,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:40:58,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1116726392, now seen corresponding path program 1 times [2021-11-09 10:40:58,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:40:58,688 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1781326475] [2021-11-09 10:40:58,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:40:58,688 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:40:58,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:40:58,689 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:40:58,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-09 10:40:59,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:40:59,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-09 10:40:59,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:40:59,356 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 [2021-11-09 10:40:59,390 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 [2021-11-09 10:40:59,407 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 [2021-11-09 10:40:59,486 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 [2021-11-09 10:40:59,490 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 [2021-11-09 10:40:59,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:40:59,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:40:59,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:40:59,845 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:40:59,846 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1781326475] [2021-11-09 10:40:59,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1781326475] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 10:40:59,846 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:40:59,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-09 10:40:59,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489922873] [2021-11-09 10:40:59,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 10:40:59,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:40:59,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 10:40:59,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-09 10:40:59,847 INFO L87 Difference]: Start difference. First operand 2562 states and 3650 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) [2021-11-09 10:41:16,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:41:16,463 INFO L93 Difference]: Finished difference Result 2561 states and 3648 transitions. [2021-11-09 10:41:16,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 10:41:16,465 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 [2021-11-09 10:41:16,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:41:16,472 INFO L225 Difference]: With dead ends: 2561 [2021-11-09 10:41:16,472 INFO L226 Difference]: Without dead ends: 2561 [2021-11-09 10:41:16,472 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 [2021-11-09 10:41:16,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2561 states. [2021-11-09 10:41:16,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2561 to 2561. [2021-11-09 10:41:16,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2561 states, 1909 states have (on average 1.8831849135673127) internal successors, (3595), 2534 states have internal predecessors, (3595), 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) [2021-11-09 10:41:16,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2561 states to 2561 states and 3648 transitions. [2021-11-09 10:41:16,508 INFO L78 Accepts]: Start accepts. Automaton has 2561 states and 3648 transitions. Word has length 62 [2021-11-09 10:41:16,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:41:16,508 INFO L470 AbstractCegarLoop]: Abstraction has 2561 states and 3648 transitions. [2021-11-09 10:41:16,509 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) [2021-11-09 10:41:16,509 INFO L276 IsEmpty]: Start isEmpty. Operand 2561 states and 3648 transitions. [2021-11-09 10:41:16,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-09 10:41:16,510 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:41:16,510 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] [2021-11-09 10:41:16,525 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-11-09 10:41:16,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:41:16,725 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 830 more)] === [2021-11-09 10:41:16,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:41:16,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1880694946, now seen corresponding path program 1 times [2021-11-09 10:41:16,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:41:16,726 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [687018596] [2021-11-09 10:41:16,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:41:16,726 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:41:16,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:41:16,729 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:41:16,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-09 10:41:17,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:41:17,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 10:41:17,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:41:17,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:17,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:41:17,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:17,605 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:41:17,605 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [687018596] [2021-11-09 10:41:17,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [687018596] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 10:41:17,606 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:41:17,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-09 10:41:17,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608290741] [2021-11-09 10:41:17,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 10:41:17,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:41:17,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 10:41:17,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-09 10:41:17,607 INFO L87 Difference]: Start difference. First operand 2561 states and 3648 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) [2021-11-09 10:41:17,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:41:17,749 INFO L93 Difference]: Finished difference Result 2571 states and 3666 transitions. [2021-11-09 10:41:17,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 10:41:17,750 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 [2021-11-09 10:41:17,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:41:17,757 INFO L225 Difference]: With dead ends: 2571 [2021-11-09 10:41:17,757 INFO L226 Difference]: Without dead ends: 2571 [2021-11-09 10:41:17,758 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 [2021-11-09 10:41:17,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2571 states. [2021-11-09 10:41:17,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2571 to 2571. [2021-11-09 10:41:17,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2571 states, 1917 states have (on average 1.881585811163276) internal successors, (3607), 2543 states have internal predecessors, (3607), 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) [2021-11-09 10:41:17,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2571 states to 2571 states and 3666 transitions. [2021-11-09 10:41:17,799 INFO L78 Accepts]: Start accepts. Automaton has 2571 states and 3666 transitions. Word has length 70 [2021-11-09 10:41:17,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:41:17,800 INFO L470 AbstractCegarLoop]: Abstraction has 2571 states and 3666 transitions. [2021-11-09 10:41:17,800 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) [2021-11-09 10:41:17,800 INFO L276 IsEmpty]: Start isEmpty. Operand 2571 states and 3666 transitions. [2021-11-09 10:41:17,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-09 10:41:17,801 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:41:17,801 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] [2021-11-09 10:41:17,832 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-11-09 10:41:18,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:41:18,014 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 830 more)] === [2021-11-09 10:41:18,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:41:18,015 INFO L85 PathProgramCache]: Analyzing trace with hash -208281762, now seen corresponding path program 1 times [2021-11-09 10:41:18,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:41:18,015 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [37177733] [2021-11-09 10:41:18,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:41:18,015 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:41:18,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:41:18,016 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:41:18,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-09 10:41:18,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:41:18,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 10:41:18,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:41:18,774 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:18,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:41:19,056 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:19,056 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:41:19,056 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [37177733] [2021-11-09 10:41:19,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [37177733] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 10:41:19,057 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:41:19,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-11-09 10:41:19,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685374668] [2021-11-09 10:41:19,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-09 10:41:19,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:41:19,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-09 10:41:19,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-09 10:41:19,058 INFO L87 Difference]: Start difference. First operand 2571 states and 3666 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) [2021-11-09 10:41:19,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:41:19,646 INFO L93 Difference]: Finished difference Result 2585 states and 3694 transitions. [2021-11-09 10:41:19,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-09 10:41:19,659 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 [2021-11-09 10:41:19,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:41:19,667 INFO L225 Difference]: With dead ends: 2585 [2021-11-09 10:41:19,667 INFO L226 Difference]: Without dead ends: 2581 [2021-11-09 10:41:19,668 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 [2021-11-09 10:41:19,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2581 states. [2021-11-09 10:41:19,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2581 to 2577. [2021-11-09 10:41:19,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2577 states, 1923 states have (on average 1.8798751950078003) internal successors, (3615), 2549 states have internal predecessors, (3615), 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) [2021-11-09 10:41:19,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2577 states to 2577 states and 3674 transitions. [2021-11-09 10:41:19,720 INFO L78 Accepts]: Start accepts. Automaton has 2577 states and 3674 transitions. Word has length 72 [2021-11-09 10:41:19,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:41:19,720 INFO L470 AbstractCegarLoop]: Abstraction has 2577 states and 3674 transitions. [2021-11-09 10:41:19,721 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) [2021-11-09 10:41:19,721 INFO L276 IsEmpty]: Start isEmpty. Operand 2577 states and 3674 transitions. [2021-11-09 10:41:19,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-09 10:41:19,722 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:41:19,722 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] [2021-11-09 10:41:19,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-09 10:41:19,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:41:19,937 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 830 more)] === [2021-11-09 10:41:19,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:41:19,938 INFO L85 PathProgramCache]: Analyzing trace with hash 464772958, now seen corresponding path program 2 times [2021-11-09 10:41:19,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:41:19,939 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2110057418] [2021-11-09 10:41:19,939 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 10:41:19,939 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:41:19,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:41:19,940 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:41:20,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-09 10:41:20,920 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 10:41:20,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:41:20,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-09 10:41:20,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:41:21,238 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:21,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:41:21,786 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:21,787 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:41:21,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2110057418] [2021-11-09 10:41:21,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2110057418] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 10:41:21,787 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:41:21,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-11-09 10:41:21,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590609984] [2021-11-09 10:41:21,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-09 10:41:21,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:41:21,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-09 10:41:21,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-11-09 10:41:21,788 INFO L87 Difference]: Start difference. First operand 2577 states and 3674 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) [2021-11-09 10:41:23,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:41:23,801 INFO L93 Difference]: Finished difference Result 2605 states and 3742 transitions. [2021-11-09 10:41:23,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-09 10:41:23,802 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 [2021-11-09 10:41:23,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:41:23,809 INFO L225 Difference]: With dead ends: 2605 [2021-11-09 10:41:23,809 INFO L226 Difference]: Without dead ends: 2601 [2021-11-09 10:41:23,810 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=457, Invalid=949, Unknown=0, NotChecked=0, Total=1406 [2021-11-09 10:41:23,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2601 states. [2021-11-09 10:41:23,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2601 to 2589. [2021-11-09 10:41:23,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2589 states, 1935 states have (on average 1.8764857881136952) internal successors, (3631), 2561 states have internal predecessors, (3631), 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) [2021-11-09 10:41:23,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2589 states to 2589 states and 3690 transitions. [2021-11-09 10:41:23,863 INFO L78 Accepts]: Start accepts. Automaton has 2589 states and 3690 transitions. Word has length 76 [2021-11-09 10:41:23,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:41:23,864 INFO L470 AbstractCegarLoop]: Abstraction has 2589 states and 3690 transitions. [2021-11-09 10:41:23,864 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) [2021-11-09 10:41:23,864 INFO L276 IsEmpty]: Start isEmpty. Operand 2589 states and 3690 transitions. [2021-11-09 10:41:23,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-09 10:41:23,865 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:41:23,866 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] [2021-11-09 10:41:23,890 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-09 10:41:24,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:41:24,087 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 830 more)] === [2021-11-09 10:41:24,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:41:24,087 INFO L85 PathProgramCache]: Analyzing trace with hash 787472222, now seen corresponding path program 3 times [2021-11-09 10:41:24,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:41:24,088 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [140476835] [2021-11-09 10:41:24,088 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 10:41:24,089 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:41:24,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:41:24,090 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:41:24,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-09 10:41:25,521 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-09 10:41:25,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:41:25,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-09 10:41:25,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:41:26,136 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:26,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:41:28,117 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:28,118 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:41:28,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [140476835] [2021-11-09 10:41:28,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [140476835] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 10:41:28,118 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:41:28,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2021-11-09 10:41:28,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231196800] [2021-11-09 10:41:28,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-09 10:41:28,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:41:28,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-09 10:41:28,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2021-11-09 10:41:28,120 INFO L87 Difference]: Start difference. First operand 2589 states and 3690 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) [2021-11-09 10:41:38,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:41:38,304 INFO L93 Difference]: Finished difference Result 2645 states and 3874 transitions. [2021-11-09 10:41:38,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-09 10:41:38,305 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 [2021-11-09 10:41:38,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:41:38,312 INFO L225 Difference]: With dead ends: 2645 [2021-11-09 10:41:38,313 INFO L226 Difference]: Without dead ends: 2639 [2021-11-09 10:41:38,315 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=1377, Invalid=2783, Unknown=0, NotChecked=0, Total=4160 [2021-11-09 10:41:38,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2639 states. [2021-11-09 10:41:38,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2639 to 2613. [2021-11-09 10:41:38,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2613 states, 1959 states have (on average 1.869321082184788) internal successors, (3662), 2585 states have internal predecessors, (3662), 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) [2021-11-09 10:41:38,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2613 states to 2613 states and 3721 transitions. [2021-11-09 10:41:38,369 INFO L78 Accepts]: Start accepts. Automaton has 2613 states and 3721 transitions. Word has length 84 [2021-11-09 10:41:38,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:41:38,369 INFO L470 AbstractCegarLoop]: Abstraction has 2613 states and 3721 transitions. [2021-11-09 10:41:38,370 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) [2021-11-09 10:41:38,370 INFO L276 IsEmpty]: Start isEmpty. Operand 2613 states and 3721 transitions. [2021-11-09 10:41:38,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-09 10:41:38,371 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:41:38,371 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] [2021-11-09 10:41:38,396 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-11-09 10:41:38,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:41:38,586 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 830 more)] === [2021-11-09 10:41:38,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:41:38,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1634197342, now seen corresponding path program 4 times [2021-11-09 10:41:38,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:41:38,588 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1102111072] [2021-11-09 10:41:38,588 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-09 10:41:38,588 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:41:38,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:41:38,589 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:41:38,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-09 10:41:39,444 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-09 10:41:39,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:41:39,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-09 10:41:39,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:41:40,890 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:40,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:41:45,605 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:41:45,606 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:41:45,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1102111072] [2021-11-09 10:41:45,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1102111072] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 10:41:45,606 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:41:45,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 66 [2021-11-09 10:41:45,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910987291] [2021-11-09 10:41:45,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-09 10:41:45,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:41:45,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-09 10:41:45,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1000, Invalid=3290, Unknown=0, NotChecked=0, Total=4290 [2021-11-09 10:41:45,611 INFO L87 Difference]: Start difference. First operand 2613 states and 3721 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) [2021-11-09 10:42:04,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:42:04,688 INFO L93 Difference]: Finished difference Result 2705 states and 3986 transitions. [2021-11-09 10:42:04,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-11-09 10:42:04,689 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 [2021-11-09 10:42:04,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:42:04,719 INFO L225 Difference]: With dead ends: 2705 [2021-11-09 10:42:04,719 INFO L226 Difference]: Without dead ends: 2701 [2021-11-09 10:42:04,726 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2313 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=4503, Invalid=14679, Unknown=0, NotChecked=0, Total=19182 [2021-11-09 10:42:04,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2701 states. [2021-11-09 10:42:04,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2701 to 2643. [2021-11-09 10:42:04,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2643 states, 1989 states have (on average 1.8642533936651584) internal successors, (3708), 2615 states have internal predecessors, (3708), 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) [2021-11-09 10:42:04,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2643 states to 2643 states and 3767 transitions. [2021-11-09 10:42:04,788 INFO L78 Accepts]: Start accepts. Automaton has 2643 states and 3767 transitions. Word has length 100 [2021-11-09 10:42:04,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:42:04,788 INFO L470 AbstractCegarLoop]: Abstraction has 2643 states and 3767 transitions. [2021-11-09 10:42:04,789 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) [2021-11-09 10:42:04,789 INFO L276 IsEmpty]: Start isEmpty. Operand 2643 states and 3767 transitions. [2021-11-09 10:42:04,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-09 10:42:04,790 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:42:04,790 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] [2021-11-09 10:42:04,812 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-09 10:42:05,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:42:05,009 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 830 more)] === [2021-11-09 10:42:05,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:42:05,010 INFO L85 PathProgramCache]: Analyzing trace with hash -894378146, now seen corresponding path program 5 times [2021-11-09 10:42:05,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:42:05,011 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [56512544] [2021-11-09 10:42:05,011 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-09 10:42:05,011 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:42:05,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:42:05,013 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:42:05,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3209f0a-1e30-4e7e-8642-780055fdad40/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-09 10:42:06,869 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2021-11-09 10:42:06,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:42:06,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-09 10:42:06,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:42:06,970 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 [2021-11-09 10:42:07,279 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-09 10:42:07,279 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 21 treesize of output 28 [2021-11-09 10:42:07,340 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 [2021-11-09 10:42:07,544 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 44 treesize of output 32 [2021-11-09 10:52:48,923 WARN L207 SmtUtils]: Spent 5.29 s on a formula simplification that was a NOOP. DAG size: 82