./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-1.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_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/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_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/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_b680e690-5468-462e-9dd9-2969f93ddda0/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 22b4144b7005899e18ff8135fa52f12863f7106dbe1ddb808d25d8593c5f8fc4 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 09:33:37,008 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 09:33:37,010 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 09:33:37,063 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 09:33:37,064 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 09:33:37,065 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 09:33:37,067 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 09:33:37,069 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 09:33:37,072 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 09:33:37,073 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 09:33:37,074 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 09:33:37,075 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 09:33:37,076 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 09:33:37,085 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 09:33:37,086 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 09:33:37,088 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 09:33:37,089 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 09:33:37,090 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 09:33:37,092 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 09:33:37,095 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 09:33:37,097 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 09:33:37,098 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 09:33:37,100 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 09:33:37,101 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 09:33:37,105 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 09:33:37,106 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 09:33:37,106 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 09:33:37,107 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 09:33:37,108 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 09:33:37,109 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 09:33:37,110 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 09:33:37,111 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 09:33:37,111 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 09:33:37,112 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 09:33:37,114 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 09:33:37,114 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 09:33:37,115 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 09:33:37,115 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 09:33:37,116 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 09:33:37,117 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 09:33:37,118 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 09:33:37,123 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-09 09:33:37,147 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 09:33:37,147 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 09:33:37,148 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 09:33:37,148 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 09:33:37,149 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 09:33:37,149 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 09:33:37,150 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 09:33:37,150 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 09:33:37,150 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 09:33:37,150 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-09 09:33:37,150 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 09:33:37,151 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 09:33:37,151 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 09:33:37,151 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-09 09:33:37,151 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-09 09:33:37,152 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-09 09:33:37,152 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 09:33:37,152 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-09 09:33:37,152 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 09:33:37,152 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 09:33:37,153 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 09:33:37,153 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 09:33:37,153 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 09:33:37,153 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:33:37,154 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 09:33:37,154 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 09:33:37,154 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 09:33:37,154 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 09:33:37,155 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 09:33:37,155 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_b680e690-5468-462e-9dd9-2969f93ddda0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22b4144b7005899e18ff8135fa52f12863f7106dbe1ddb808d25d8593c5f8fc4 [2021-11-09 09:33:37,401 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 09:33:37,436 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 09:33:37,439 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 09:33:37,440 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 09:33:37,442 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 09:33:37,443 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-1.i [2021-11-09 09:33:37,525 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/data/477eb9de6/e1acb2a3b6f347169eda489437e0f543/FLAGa9cc0d089 [2021-11-09 09:33:38,092 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 09:33:38,093 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-1.i [2021-11-09 09:33:38,114 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/data/477eb9de6/e1acb2a3b6f347169eda489437e0f543/FLAGa9cc0d089 [2021-11-09 09:33:38,329 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/data/477eb9de6/e1acb2a3b6f347169eda489437e0f543 [2021-11-09 09:33:38,335 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 09:33:38,337 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-09 09:33:38,348 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 09:33:38,349 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 09:33:38,352 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 09:33:38,353 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:33:38" (1/1) ... [2021-11-09 09:33:38,354 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dd30b4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:33:38, skipping insertion in model container [2021-11-09 09:33:38,354 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:33:38" (1/1) ... [2021-11-09 09:33:38,364 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 09:33:38,431 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 09:33:38,996 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_b680e690-5468-462e-9dd9-2969f93ddda0/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-1.i[33021,33034] [2021-11-09 09:33:39,190 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_b680e690-5468-462e-9dd9-2969f93ddda0/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-1.i[44124,44137] [2021-11-09 09:33:39,192 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_b680e690-5468-462e-9dd9-2969f93ddda0/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-1.i[44245,44258] [2021-11-09 09:33:39,203 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:33:39,223 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-09 09:33:39,225 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1b2f3661 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:33:39, skipping insertion in model container [2021-11-09 09:33:39,225 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 09:33:39,226 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-11-09 09:33:39,231 INFO L168 Benchmark]: Toolchain (without parser) took 891.74 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 63.6 MB in the beginning and 98.4 MB in the end (delta: -34.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 16.1 GB. [2021-11-09 09:33:39,232 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 104.9 MB. Free memory was 82.1 MB in the beginning and 82.0 MB in the end (delta: 65.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 09:33:39,234 INFO L168 Benchmark]: CACSL2BoogieTranslator took 877.36 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 63.4 MB in the beginning and 98.4 MB in the end (delta: -35.0 MB). Peak memory consumption was 19.8 MB. Max. memory is 16.1 GB. [2021-11-09 09:33:39,237 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 104.9 MB. Free memory was 82.1 MB in the beginning and 82.0 MB in the end (delta: 65.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 877.36 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 63.4 MB in the beginning and 98.4 MB in the end (delta: -35.0 MB). Peak memory consumption was 19.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 716]: 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_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/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_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/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_b680e690-5468-462e-9dd9-2969f93ddda0/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 22b4144b7005899e18ff8135fa52f12863f7106dbe1ddb808d25d8593c5f8fc4 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 09:33:41,559 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 09:33:41,561 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 09:33:41,596 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 09:33:41,597 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 09:33:41,598 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 09:33:41,600 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 09:33:41,603 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 09:33:41,605 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 09:33:41,606 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 09:33:41,607 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 09:33:41,609 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 09:33:41,610 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 09:33:41,611 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 09:33:41,613 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 09:33:41,615 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 09:33:41,616 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 09:33:41,617 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 09:33:41,619 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 09:33:41,622 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 09:33:41,624 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 09:33:41,625 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 09:33:41,627 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 09:33:41,628 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 09:33:41,632 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 09:33:41,632 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 09:33:41,633 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 09:33:41,634 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 09:33:41,634 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 09:33:41,636 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 09:33:41,636 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 09:33:41,637 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 09:33:41,638 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 09:33:41,639 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 09:33:41,640 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 09:33:41,641 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 09:33:41,642 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 09:33:41,642 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 09:33:41,642 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 09:33:41,644 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 09:33:41,645 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 09:33:41,646 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-09 09:33:41,674 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 09:33:41,674 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 09:33:41,675 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 09:33:41,675 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 09:33:41,676 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 09:33:41,676 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 09:33:41,677 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 09:33:41,677 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 09:33:41,677 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 09:33:41,677 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-09 09:33:41,677 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 09:33:41,678 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 09:33:41,678 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 09:33:41,678 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-09 09:33:41,678 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-09 09:33:41,678 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-09 09:33:41,679 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 09:33:41,679 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-09 09:33:41,679 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-09 09:33:41,679 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-09 09:33:41,679 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 09:33:41,679 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 09:33:41,680 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 09:33:41,680 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 09:33:41,680 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 09:33:41,680 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:33:41,680 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 09:33:41,681 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 09:33:41,681 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-09 09:33:41,681 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-09 09:33:41,681 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 09:33:41,681 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-09 09:33:41,682 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_b680e690-5468-462e-9dd9-2969f93ddda0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22b4144b7005899e18ff8135fa52f12863f7106dbe1ddb808d25d8593c5f8fc4 [2021-11-09 09:33:42,066 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 09:33:42,098 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 09:33:42,101 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 09:33:42,102 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 09:33:42,104 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 09:33:42,105 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-1.i [2021-11-09 09:33:42,185 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/data/f31284d8e/0d24837d0203424991fb5276d8032f48/FLAGf33ec40e4 [2021-11-09 09:33:42,983 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 09:33:42,984 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-1.i [2021-11-09 09:33:43,012 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/data/f31284d8e/0d24837d0203424991fb5276d8032f48/FLAGf33ec40e4 [2021-11-09 09:33:43,159 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/data/f31284d8e/0d24837d0203424991fb5276d8032f48 [2021-11-09 09:33:43,161 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 09:33:43,163 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-09 09:33:43,165 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 09:33:43,165 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 09:33:43,185 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 09:33:43,186 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:33:43" (1/1) ... [2021-11-09 09:33:43,187 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e02d5ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:33:43, skipping insertion in model container [2021-11-09 09:33:43,188 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:33:43" (1/1) ... [2021-11-09 09:33:43,196 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 09:33:43,271 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 09:33:43,706 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_b680e690-5468-462e-9dd9-2969f93ddda0/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-1.i[33021,33034] [2021-11-09 09:33:43,867 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_b680e690-5468-462e-9dd9-2969f93ddda0/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-1.i[44124,44137] [2021-11-09 09:33:43,868 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_b680e690-5468-462e-9dd9-2969f93ddda0/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-1.i[44245,44258] [2021-11-09 09:33:43,879 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:33:43,903 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-09 09:33:43,921 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 09:33:43,954 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_b680e690-5468-462e-9dd9-2969f93ddda0/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-1.i[33021,33034] [2021-11-09 09:33:44,037 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_b680e690-5468-462e-9dd9-2969f93ddda0/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-1.i[44124,44137] [2021-11-09 09:33:44,038 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_b680e690-5468-462e-9dd9-2969f93ddda0/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-1.i[44245,44258] [2021-11-09 09:33:44,040 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:33:44,045 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 09:33:44,079 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_b680e690-5468-462e-9dd9-2969f93ddda0/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-1.i[33021,33034] [2021-11-09 09:33:44,171 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_b680e690-5468-462e-9dd9-2969f93ddda0/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-1.i[44124,44137] [2021-11-09 09:33:44,172 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_b680e690-5468-462e-9dd9-2969f93ddda0/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-1.i[44245,44258] [2021-11-09 09:33:44,174 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:33:44,242 INFO L208 MainTranslator]: Completed translation [2021-11-09 09:33:44,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:33:44 WrapperNode [2021-11-09 09:33:44,243 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 09:33:44,245 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 09:33:44,245 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 09:33:44,245 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 09:33:44,257 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:33:44" (1/1) ... [2021-11-09 09:33:44,258 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:33:44" (1/1) ... [2021-11-09 09:33:44,323 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:33:44" (1/1) ... [2021-11-09 09:33:44,334 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:33:44" (1/1) ... [2021-11-09 09:33:44,412 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:33:44" (1/1) ... [2021-11-09 09:33:44,427 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:33:44" (1/1) ... [2021-11-09 09:33:44,435 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:33:44" (1/1) ... [2021-11-09 09:33:44,451 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 09:33:44,452 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 09:33:44,452 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 09:33:44,452 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 09:33:44,453 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:33:44" (1/1) ... [2021-11-09 09:33:44,473 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:33:44,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:33:44,500 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 09:33:44,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 09:33:44,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-09 09:33:44,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 09:33:44,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-11-09 09:33:44,544 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-09 09:33:44,544 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-09 09:33:44,545 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-09 09:33:44,545 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-09 09:33:44,545 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-09 09:33:44,545 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-09 09:33:44,545 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-09 09:33:44,545 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-09 09:33:44,546 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-09 09:33:44,546 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-11-09 09:33:44,546 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-11-09 09:33:44,546 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-11-09 09:33:44,546 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-11-09 09:33:44,546 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-09 09:33:44,547 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-11-09 09:33:44,547 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-11-09 09:33:44,547 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-09 09:33:44,547 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-11-09 09:33:44,547 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-11-09 09:33:44,547 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-11-09 09:33:44,547 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-09 09:33:44,548 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-11-09 09:33:44,548 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-11-09 09:33:44,548 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-11-09 09:33:44,548 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-11-09 09:33:44,548 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-11-09 09:33:44,548 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-11-09 09:33:44,548 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-11-09 09:33:44,548 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-09 09:33:44,548 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-11-09 09:33:44,549 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-11-09 09:33:44,549 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-11-09 09:33:44,549 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-11-09 09:33:44,549 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-11-09 09:33:44,549 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-11-09 09:33:44,549 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-11-09 09:33:44,549 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-11-09 09:33:44,549 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-11-09 09:33:44,550 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-11-09 09:33:44,550 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-11-09 09:33:44,550 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-11-09 09:33:44,550 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-11-09 09:33:44,550 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-11-09 09:33:44,550 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-11-09 09:33:44,550 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-11-09 09:33:44,550 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-11-09 09:33:44,551 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-11-09 09:33:44,551 INFO L130 BoogieDeclarations]: Found specification of procedure ffsl [2021-11-09 09:33:44,551 INFO L130 BoogieDeclarations]: Found specification of procedure ffsll [2021-11-09 09:33:44,551 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-11-09 09:33:44,551 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-11-09 09:33:44,551 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp_l [2021-11-09 09:33:44,551 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp_l [2021-11-09 09:33:44,551 INFO L130 BoogieDeclarations]: Found specification of procedure explicit_bzero [2021-11-09 09:33:44,551 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-11-09 09:33:44,552 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-11-09 09:33:44,552 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-11-09 09:33:44,552 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-11-09 09:33:44,552 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-11-09 09:33:44,552 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-11-09 09:33:44,552 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-09 09:33:44,552 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-09 09:33:44,552 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-09 09:33:44,552 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-09 09:33:44,553 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-09 09:33:44,553 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-09 09:33:44,553 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-09 09:33:44,553 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-09 09:33:44,553 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-09 09:33:44,553 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-09 09:33:44,553 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-09 09:33:44,553 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-09 09:33:44,553 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-09 09:33:44,554 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-09 09:33:44,554 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-09 09:33:44,554 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-09 09:33:44,554 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-09 09:33:44,554 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-09 09:33:44,554 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-09 09:33:44,554 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-09 09:33:44,554 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-09 09:33:44,554 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-09 09:33:44,555 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-09 09:33:44,555 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-09 09:33:44,555 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-09 09:33:44,555 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-09 09:33:44,555 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-09 09:33:44,555 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-09 09:33:44,555 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-09 09:33:44,555 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-09 09:33:44,556 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-09 09:33:44,556 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-09 09:33:44,556 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-09 09:33:44,556 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-09 09:33:44,556 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-09 09:33:44,556 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-09 09:33:44,556 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-09 09:33:44,556 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-09 09:33:44,556 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-09 09:33:44,557 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-09 09:33:44,557 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-09 09:33:44,557 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-09 09:33:44,557 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-09 09:33:44,557 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-09 09:33:44,557 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-09 09:33:44,557 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-09 09:33:44,557 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-09 09:33:44,558 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-09 09:33:44,558 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-09 09:33:44,558 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-09 09:33:44,558 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-09 09:33:44,558 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-09 09:33:44,558 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-09 09:33:44,558 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-09 09:33:44,558 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-09 09:33:44,559 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-09 09:33:44,559 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-09 09:33:44,559 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-09 09:33:44,559 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-09 09:33:44,559 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-09 09:33:44,559 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-09 09:33:44,559 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-09 09:33:44,559 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-09 09:33:44,559 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-09 09:33:44,559 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-09 09:33:44,560 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-09 09:33:44,560 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-09 09:33:44,560 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-09 09:33:44,560 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-09 09:33:44,560 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-09 09:33:44,560 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-09 09:33:44,560 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-09 09:33:44,560 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-09 09:33:44,560 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-09 09:33:44,561 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-09 09:33:44,561 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-09 09:33:44,561 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-09 09:33:44,561 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-09 09:33:44,561 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-09 09:33:44,561 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-09 09:33:44,561 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-09 09:33:44,561 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-09 09:33:44,561 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-09 09:33:44,562 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-09 09:33:44,562 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-09 09:33:44,562 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-09 09:33:44,562 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-09 09:33:44,562 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-09 09:33:44,562 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-09 09:33:44,562 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-09 09:33:44,562 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-09 09:33:44,562 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-09 09:33:44,563 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-09 09:33:44,563 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-09 09:33:44,563 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-09 09:33:44,563 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-09 09:33:44,563 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-09 09:33:44,563 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-09 09:33:44,563 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-09 09:33:44,563 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-09 09:33:44,564 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-09 09:33:44,564 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-09 09:33:44,564 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-09 09:33:44,564 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-09 09:33:44,564 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-09 09:33:44,564 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-09 09:33:44,564 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-09 09:33:44,564 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-09 09:33:44,564 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-09 09:33:44,565 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-09 09:33:44,565 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-09 09:33:44,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 09:33:44,565 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-09 09:33:44,565 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-09 09:33:44,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-09 09:33:44,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-09 09:33:44,565 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-09 09:33:44,565 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-09 09:33:44,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-09 09:33:44,566 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-09 09:33:44,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-09 09:33:44,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-09 09:33:44,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-09 09:33:44,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-09 09:33:44,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 09:33:44,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-11-09 09:33:44,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-09 09:33:45,203 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-09 09:33:50,213 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 09:33:50,213 INFO L299 CfgBuilder]: Removed 63 assume(true) statements. [2021-11-09 09:33:50,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:33:50 BoogieIcfgContainer [2021-11-09 09:33:50,217 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 09:33:50,219 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 09:33:50,219 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 09:33:50,223 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 09:33:50,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 09:33:43" (1/3) ... [2021-11-09 09:33:50,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69408374 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:33:50, skipping insertion in model container [2021-11-09 09:33:50,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:33:44" (2/3) ... [2021-11-09 09:33:50,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69408374 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:33:50, skipping insertion in model container [2021-11-09 09:33:50,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:33:50" (3/3) ... [2021-11-09 09:33:50,226 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test7-1.i [2021-11-09 09:33:50,232 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 09:33:50,232 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 531 error locations. [2021-11-09 09:33:50,276 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 09:33:50,283 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 09:33:50,283 INFO L340 AbstractCegarLoop]: Starting to check reachability of 531 error locations. [2021-11-09 09:33:50,330 INFO L276 IsEmpty]: Start isEmpty. Operand has 1055 states, 519 states have (on average 2.2524084778420037) internal successors, (1169), 1046 states have internal predecessors, (1169), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-09 09:33:50,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-09 09:33:50,338 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:33:50,338 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:50,339 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 527 more)] === [2021-11-09 09:33:50,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:50,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1952023556, now seen corresponding path program 1 times [2021-11-09 09:33:50,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:33:50,357 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1587439580] [2021-11-09 09:33:50,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:50,359 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:33:50,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:33:50,365 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:33:50,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-09 09:33:50,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:50,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 09:33:50,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:33:50,725 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 09:33:50,754 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 09:33:50,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:33:50,805 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 09:33:50,806 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:33:50,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1587439580] [2021-11-09 09:33:50,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1587439580] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:50,807 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:50,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-09 09:33:50,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232881127] [2021-11-09 09:33:50,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:33:50,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:33:50,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:33:50,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:33:50,841 INFO L87 Difference]: Start difference. First operand has 1055 states, 519 states have (on average 2.2524084778420037) internal successors, (1169), 1046 states have internal predecessors, (1169), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:33:52,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:33:52,914 INFO L93 Difference]: Finished difference Result 1046 states and 1101 transitions. [2021-11-09 09:33:52,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:33:52,920 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-11-09 09:33:52,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:33:52,954 INFO L225 Difference]: With dead ends: 1046 [2021-11-09 09:33:52,955 INFO L226 Difference]: Without dead ends: 1043 [2021-11-09 09:33:52,959 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:33:52,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2021-11-09 09:33:53,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 1035. [2021-11-09 09:33:53,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1035 states, 517 states have (on average 2.09284332688588) internal successors, (1082), 1027 states have internal predecessors, (1082), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-09 09:33:53,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 1091 transitions. [2021-11-09 09:33:53,090 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 1091 transitions. Word has length 7 [2021-11-09 09:33:53,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:33:53,091 INFO L470 AbstractCegarLoop]: Abstraction has 1035 states and 1091 transitions. [2021-11-09 09:33:53,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:33:53,092 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 1091 transitions. [2021-11-09 09:33:53,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-09 09:33:53,092 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:33:53,092 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:53,115 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-09 09:33:53,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:33:53,315 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 527 more)] === [2021-11-09 09:33:53,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:53,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1952023557, now seen corresponding path program 1 times [2021-11-09 09:33:53,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:33:53,317 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1099481548] [2021-11-09 09:33:53,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:53,317 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:33:53,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:33:53,319 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:33:53,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-09 09:33:53,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:53,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 09:33:53,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:33:53,546 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 09:33:53,562 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 09:33:53,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:33:53,638 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 09:33:53,638 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:33:53,638 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1099481548] [2021-11-09 09:33:53,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1099481548] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:53,639 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:53,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-09 09:33:53,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623995510] [2021-11-09 09:33:53,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:33:53,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:33:53,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:33:53,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:33:53,642 INFO L87 Difference]: Start difference. First operand 1035 states and 1091 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:33:59,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:33:59,194 INFO L93 Difference]: Finished difference Result 1500 states and 1588 transitions. [2021-11-09 09:33:59,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:33:59,195 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-11-09 09:33:59,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:33:59,204 INFO L225 Difference]: With dead ends: 1500 [2021-11-09 09:33:59,205 INFO L226 Difference]: Without dead ends: 1500 [2021-11-09 09:33:59,206 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:33:59,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1500 states. [2021-11-09 09:33:59,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1500 to 1070. [2021-11-09 09:33:59,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1070 states, 561 states have (on average 2.06951871657754) internal successors, (1161), 1062 states have internal predecessors, (1161), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-09 09:33:59,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1070 states to 1070 states and 1170 transitions. [2021-11-09 09:33:59,246 INFO L78 Accepts]: Start accepts. Automaton has 1070 states and 1170 transitions. Word has length 7 [2021-11-09 09:33:59,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:33:59,246 INFO L470 AbstractCegarLoop]: Abstraction has 1070 states and 1170 transitions. [2021-11-09 09:33:59,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:33:59,247 INFO L276 IsEmpty]: Start isEmpty. Operand 1070 states and 1170 transitions. [2021-11-09 09:33:59,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-09 09:33:59,248 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:33:59,248 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:33:59,262 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-09 09:33:59,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:33:59,461 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr6REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 527 more)] === [2021-11-09 09:33:59,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:59,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1548729403, now seen corresponding path program 1 times [2021-11-09 09:33:59,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:33:59,463 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [912370455] [2021-11-09 09:33:59,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:59,463 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:33:59,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:33:59,464 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:33:59,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-09 09:33:59,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:59,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 09:33:59,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:33:59,739 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 09:33:59,754 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 09:33:59,755 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:33:59,795 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 09:33:59,796 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:33:59,802 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [912370455] [2021-11-09 09:33:59,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [912370455] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:59,803 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:59,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-09 09:33:59,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125814376] [2021-11-09 09:33:59,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:33:59,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:33:59,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:33:59,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:33:59,811 INFO L87 Difference]: Start difference. First operand 1070 states and 1170 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:34:02,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:34:02,096 INFO L93 Difference]: Finished difference Result 1400 states and 1525 transitions. [2021-11-09 09:34:02,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:34:02,097 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-11-09 09:34:02,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:34:02,105 INFO L225 Difference]: With dead ends: 1400 [2021-11-09 09:34:02,105 INFO L226 Difference]: Without dead ends: 1400 [2021-11-09 09:34:02,106 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:34:02,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1400 states. [2021-11-09 09:34:02,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1400 to 1023. [2021-11-09 09:34:02,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1023 states, 561 states have (on average 1.9803921568627452) internal successors, (1111), 1015 states have internal predecessors, (1111), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-09 09:34:02,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1120 transitions. [2021-11-09 09:34:02,139 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1120 transitions. Word has length 12 [2021-11-09 09:34:02,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:34:02,139 INFO L470 AbstractCegarLoop]: Abstraction has 1023 states and 1120 transitions. [2021-11-09 09:34:02,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:34:02,140 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1120 transitions. [2021-11-09 09:34:02,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-09 09:34:02,140 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:34:02,140 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:02,158 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-09 09:34:02,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:34:02,354 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr7REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 527 more)] === [2021-11-09 09:34:02,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:02,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1548729402, now seen corresponding path program 1 times [2021-11-09 09:34:02,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:34:02,356 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [698724967] [2021-11-09 09:34:02,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:02,356 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:34:02,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:34:02,357 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:34:02,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-09 09:34:02,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:02,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 09:34:02,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:34:02,593 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 09:34:02,646 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 09:34:02,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:34:02,772 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 09:34:02,772 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:34:02,772 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [698724967] [2021-11-09 09:34:02,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [698724967] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:02,773 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:02,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-09 09:34:02,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049405898] [2021-11-09 09:34:02,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:34:02,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:34:02,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:34:02,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:34:02,775 INFO L87 Difference]: Start difference. First operand 1023 states and 1120 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:34:07,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:34:07,716 INFO L93 Difference]: Finished difference Result 1444 states and 1533 transitions. [2021-11-09 09:34:07,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:34:07,717 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-11-09 09:34:07,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:34:07,725 INFO L225 Difference]: With dead ends: 1444 [2021-11-09 09:34:07,725 INFO L226 Difference]: Without dead ends: 1444 [2021-11-09 09:34:07,725 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:34:07,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1444 states. [2021-11-09 09:34:07,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1444 to 1013. [2021-11-09 09:34:07,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1013 states, 561 states have (on average 1.9572192513368984) internal successors, (1098), 1005 states have internal predecessors, (1098), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-09 09:34:07,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 1107 transitions. [2021-11-09 09:34:07,759 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 1107 transitions. Word has length 12 [2021-11-09 09:34:07,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:34:07,759 INFO L470 AbstractCegarLoop]: Abstraction has 1013 states and 1107 transitions. [2021-11-09 09:34:07,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:34:07,760 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 1107 transitions. [2021-11-09 09:34:07,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-09 09:34:07,761 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:34:07,761 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:07,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-09 09:34:07,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:34:07,973 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr526ASSERT_VIOLATIONMEMORY_LEAK === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 527 more)] === [2021-11-09 09:34:07,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:07,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1839245231, now seen corresponding path program 1 times [2021-11-09 09:34:07,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:34:07,974 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [426884822] [2021-11-09 09:34:07,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:07,974 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:34:07,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:34:07,976 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:34:07,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-09 09:34:08,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:08,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 09:34:08,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:34:08,303 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 09:34:08,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:34:08,398 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 09:34:08,398 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:34:08,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [426884822] [2021-11-09 09:34:08,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [426884822] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:08,401 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:08,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-09 09:34:08,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084975451] [2021-11-09 09:34:08,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:34:08,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:34:08,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:34:08,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:34:08,407 INFO L87 Difference]: Start difference. First operand 1013 states and 1107 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:34:09,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:34:09,260 INFO L93 Difference]: Finished difference Result 1460 states and 1586 transitions. [2021-11-09 09:34:09,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:34:09,262 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-11-09 09:34:09,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:34:09,269 INFO L225 Difference]: With dead ends: 1460 [2021-11-09 09:34:09,269 INFO L226 Difference]: Without dead ends: 1460 [2021-11-09 09:34:09,270 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:34:09,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1460 states. [2021-11-09 09:34:09,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1460 to 1250. [2021-11-09 09:34:09,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1250 states, 798 states have (on average 1.9411027568922306) internal successors, (1549), 1242 states have internal predecessors, (1549), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-09 09:34:09,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 1558 transitions. [2021-11-09 09:34:09,305 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 1558 transitions. Word has length 15 [2021-11-09 09:34:09,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:34:09,305 INFO L470 AbstractCegarLoop]: Abstraction has 1250 states and 1558 transitions. [2021-11-09 09:34:09,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:34:09,306 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 1558 transitions. [2021-11-09 09:34:09,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-09 09:34:09,306 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:34:09,307 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:34:09,322 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-09 09:34:09,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:34:09,521 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr529ENSURES_VIOLATIONMEMORY_LEAK === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 527 more)] === [2021-11-09 09:34:09,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:09,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1182027384, now seen corresponding path program 1 times [2021-11-09 09:34:09,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:34:09,522 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2085306610] [2021-11-09 09:34:09,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:09,522 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:34:09,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:34:09,524 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:34:09,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-09 09:34:09,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:09,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 09:34:09,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:34:09,820 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:34:09,821 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:34:09,821 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:34:09,891 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-09 09:34:09,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-09 09:34:09,967 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-09 09:34:09,968 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-11-09 09:34:10,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:10,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:34:10,102 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 09:34:10,103 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:34:10,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2085306610] [2021-11-09 09:34:10,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2085306610] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:10,103 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:10,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-09 09:34:10,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197195796] [2021-11-09 09:34:10,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 09:34:10,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:34:10,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 09:34:10,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-09 09:34:10,106 INFO L87 Difference]: Start difference. First operand 1250 states and 1558 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:34:11,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:34:11,816 INFO L93 Difference]: Finished difference Result 1606 states and 1973 transitions. [2021-11-09 09:34:11,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:34:11,816 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-11-09 09:34:11,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:34:11,826 INFO L225 Difference]: With dead ends: 1606 [2021-11-09 09:34:11,826 INFO L226 Difference]: Without dead ends: 1606 [2021-11-09 09:34:11,826 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-09 09:34:11,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1606 states. [2021-11-09 09:34:11,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1606 to 1249. [2021-11-09 09:34:11,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1249 states, 797 states have (on average 1.9410288582183186) internal successors, (1547), 1241 states have internal predecessors, (1547), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-09 09:34:11,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1249 states to 1249 states and 1556 transitions. [2021-11-09 09:34:11,862 INFO L78 Accepts]: Start accepts. Automaton has 1249 states and 1556 transitions. Word has length 16 [2021-11-09 09:34:11,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:34:11,862 INFO L470 AbstractCegarLoop]: Abstraction has 1249 states and 1556 transitions. [2021-11-09 09:34:11,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:34:11,863 INFO L276 IsEmpty]: Start isEmpty. Operand 1249 states and 1556 transitions. [2021-11-09 09:34:11,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-09 09:34:11,864 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:34:11,864 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] [2021-11-09 09:34:11,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-09 09:34:12,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:34:12,076 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr14REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 527 more)] === [2021-11-09 09:34:12,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:12,077 INFO L85 PathProgramCache]: Analyzing trace with hash 109421681, now seen corresponding path program 1 times [2021-11-09 09:34:12,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:34:12,077 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [118041153] [2021-11-09 09:34:12,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:12,078 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:34:12,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:34:12,080 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:34:12,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-09 09:34:12,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:12,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 09:34:12,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:34:12,412 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 09:34:12,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:34:12,479 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 09:34:12,479 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:34:12,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [118041153] [2021-11-09 09:34:12,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [118041153] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:12,480 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:12,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-09 09:34:12,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568770517] [2021-11-09 09:34:12,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:34:12,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:34:12,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:34:12,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:34:12,484 INFO L87 Difference]: Start difference. First operand 1249 states and 1556 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:34:12,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:34:12,523 INFO L93 Difference]: Finished difference Result 1189 states and 1470 transitions. [2021-11-09 09:34:12,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:34:12,524 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2021-11-09 09:34:12,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:34:12,531 INFO L225 Difference]: With dead ends: 1189 [2021-11-09 09:34:12,532 INFO L226 Difference]: Without dead ends: 1189 [2021-11-09 09:34:12,532 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:34:12,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1189 states. [2021-11-09 09:34:12,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1189 to 1189. [2021-11-09 09:34:12,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1189 states, 761 states have (on average 1.9198423127463864) internal successors, (1461), 1181 states have internal predecessors, (1461), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-09 09:34:12,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1189 states to 1189 states and 1470 transitions. [2021-11-09 09:34:12,578 INFO L78 Accepts]: Start accepts. Automaton has 1189 states and 1470 transitions. Word has length 22 [2021-11-09 09:34:12,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:34:12,578 INFO L470 AbstractCegarLoop]: Abstraction has 1189 states and 1470 transitions. [2021-11-09 09:34:12,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:34:12,579 INFO L276 IsEmpty]: Start isEmpty. Operand 1189 states and 1470 transitions. [2021-11-09 09:34:12,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-09 09:34:12,580 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:34:12,580 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] [2021-11-09 09:34:12,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-09 09:34:12,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:34:12,793 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr38REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 527 more)] === [2021-11-09 09:34:12,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:12,794 INFO L85 PathProgramCache]: Analyzing trace with hash 2075018155, now seen corresponding path program 1 times [2021-11-09 09:34:12,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:34:12,794 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [680889145] [2021-11-09 09:34:12,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:12,795 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:34:12,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:34:12,796 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:34:12,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-09 09:34:13,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:13,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 09:34:13,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:34:13,110 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 09:34:13,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:34:13,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:13,172 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:34:13,172 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [680889145] [2021-11-09 09:34:13,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [680889145] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:13,172 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:13,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-09 09:34:13,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027262140] [2021-11-09 09:34:13,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:34:13,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:34:13,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:34:13,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:34:13,174 INFO L87 Difference]: Start difference. First operand 1189 states and 1470 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:34:13,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:34:13,267 INFO L93 Difference]: Finished difference Result 1161 states and 1414 transitions. [2021-11-09 09:34:13,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:34:13,268 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2021-11-09 09:34:13,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:34:13,275 INFO L225 Difference]: With dead ends: 1161 [2021-11-09 09:34:13,275 INFO L226 Difference]: Without dead ends: 1161 [2021-11-09 09:34:13,275 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-09 09:34:13,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1161 states. [2021-11-09 09:34:13,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1161 to 1159. [2021-11-09 09:34:13,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1159 states, 745 states have (on average 1.8832214765100672) internal successors, (1403), 1151 states have internal predecessors, (1403), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-09 09:34:13,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1159 states to 1159 states and 1412 transitions. [2021-11-09 09:34:13,303 INFO L78 Accepts]: Start accepts. Automaton has 1159 states and 1412 transitions. Word has length 24 [2021-11-09 09:34:13,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:34:13,303 INFO L470 AbstractCegarLoop]: Abstraction has 1159 states and 1412 transitions. [2021-11-09 09:34:13,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:34:13,303 INFO L276 IsEmpty]: Start isEmpty. Operand 1159 states and 1412 transitions. [2021-11-09 09:34:13,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-09 09:34:13,305 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:34:13,305 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] [2021-11-09 09:34:13,322 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-09 09:34:13,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:34:13,517 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr52REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 527 more)] === [2021-11-09 09:34:13,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:13,518 INFO L85 PathProgramCache]: Analyzing trace with hash 755457081, now seen corresponding path program 1 times [2021-11-09 09:34:13,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:34:13,518 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1377619612] [2021-11-09 09:34:13,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:13,519 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:34:13,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:34:13,520 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:34:13,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-09 09:34:13,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:13,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 09:34:13,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:34:13,826 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 09:34:13,978 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 09:34:13,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:34:14,142 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 09:34:14,143 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:34:14,143 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1377619612] [2021-11-09 09:34:14,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1377619612] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:14,143 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:14,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-09 09:34:14,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292457668] [2021-11-09 09:34:14,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:34:14,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:34:14,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:34:14,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:34:14,149 INFO L87 Difference]: Start difference. First operand 1159 states and 1412 transitions. Second operand has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:34:16,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:34:16,437 INFO L93 Difference]: Finished difference Result 1622 states and 1995 transitions. [2021-11-09 09:34:16,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:34:16,440 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2021-11-09 09:34:16,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:34:16,450 INFO L225 Difference]: With dead ends: 1622 [2021-11-09 09:34:16,450 INFO L226 Difference]: Without dead ends: 1622 [2021-11-09 09:34:16,450 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:34:16,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1622 states. [2021-11-09 09:34:16,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1622 to 1155. [2021-11-09 09:34:16,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1155 states, 745 states have (on average 1.8724832214765101) internal successors, (1395), 1147 states have internal predecessors, (1395), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-09 09:34:16,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 1404 transitions. [2021-11-09 09:34:16,482 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 1404 transitions. Word has length 38 [2021-11-09 09:34:16,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:34:16,482 INFO L470 AbstractCegarLoop]: Abstraction has 1155 states and 1404 transitions. [2021-11-09 09:34:16,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:34:16,483 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 1404 transitions. [2021-11-09 09:34:16,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-09 09:34:16,484 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:34:16,485 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] [2021-11-09 09:34:16,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-09 09:34:16,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:34:16,699 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr53REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 527 more)] === [2021-11-09 09:34:16,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:16,699 INFO L85 PathProgramCache]: Analyzing trace with hash 755457082, now seen corresponding path program 1 times [2021-11-09 09:34:16,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:34:16,700 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [168863537] [2021-11-09 09:34:16,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:16,701 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:34:16,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:34:16,702 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:34:16,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-09 09:34:16,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:16,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 09:34:16,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:34:17,010 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 09:34:17,336 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 09:34:17,336 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:34:17,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:17,894 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:34:17,894 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [168863537] [2021-11-09 09:34:17,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [168863537] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:17,895 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:17,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-09 09:34:17,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852516577] [2021-11-09 09:34:17,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 09:34:17,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:34:17,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 09:34:17,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-09 09:34:17,896 INFO L87 Difference]: Start difference. First operand 1155 states and 1404 transitions. Second operand has 6 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:34:24,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:34:24,953 INFO L93 Difference]: Finished difference Result 1755 states and 2150 transitions. [2021-11-09 09:34:24,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 09:34:24,955 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2021-11-09 09:34:24,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:34:24,963 INFO L225 Difference]: With dead ends: 1755 [2021-11-09 09:34:24,963 INFO L226 Difference]: Without dead ends: 1755 [2021-11-09 09:34:24,964 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 72 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 09:34:24,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1755 states. [2021-11-09 09:34:24,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1755 to 1151. [2021-11-09 09:34:24,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1151 states, 745 states have (on average 1.861744966442953) internal successors, (1387), 1143 states have internal predecessors, (1387), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-09 09:34:24,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 1396 transitions. [2021-11-09 09:34:24,994 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 1396 transitions. Word has length 38 [2021-11-09 09:34:24,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:34:24,994 INFO L470 AbstractCegarLoop]: Abstraction has 1151 states and 1396 transitions. [2021-11-09 09:34:24,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:34:24,995 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 1396 transitions. [2021-11-09 09:34:24,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-09 09:34:24,996 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:34:24,997 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] [2021-11-09 09:34:25,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-09 09:34:25,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:34:25,209 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr71REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 527 more)] === [2021-11-09 09:34:25,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:25,209 INFO L85 PathProgramCache]: Analyzing trace with hash -81906696, now seen corresponding path program 1 times [2021-11-09 09:34:25,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:34:25,210 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1277459364] [2021-11-09 09:34:25,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:25,210 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:34:25,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:34:25,212 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:34:25,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-09 09:34:25,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:25,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 09:34:25,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:34:25,740 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 09:34:25,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:34:25,909 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 09:34:25,910 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:34:25,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1277459364] [2021-11-09 09:34:25,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1277459364] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:25,910 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:25,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-09 09:34:25,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764355376] [2021-11-09 09:34:25,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:34:25,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:34:25,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:34:25,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:34:25,914 INFO L87 Difference]: Start difference. First operand 1151 states and 1396 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:34:25,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:34:25,969 INFO L93 Difference]: Finished difference Result 1139 states and 1376 transitions. [2021-11-09 09:34:25,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:34:25,970 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 56 [2021-11-09 09:34:25,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:34:25,976 INFO L225 Difference]: With dead ends: 1139 [2021-11-09 09:34:25,976 INFO L226 Difference]: Without dead ends: 1139 [2021-11-09 09:34:25,977 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:34:25,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2021-11-09 09:34:25,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1139. [2021-11-09 09:34:25,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1139 states, 733 states have (on average 1.86493860845839) internal successors, (1367), 1131 states have internal predecessors, (1367), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-09 09:34:26,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1376 transitions. [2021-11-09 09:34:26,003 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1376 transitions. Word has length 56 [2021-11-09 09:34:26,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:34:26,004 INFO L470 AbstractCegarLoop]: Abstraction has 1139 states and 1376 transitions. [2021-11-09 09:34:26,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:34:26,004 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1376 transitions. [2021-11-09 09:34:26,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-09 09:34:26,006 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:34:26,006 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] [2021-11-09 09:34:26,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-09 09:34:26,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:34:26,219 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr71REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 527 more)] === [2021-11-09 09:34:26,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:26,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1472971204, now seen corresponding path program 1 times [2021-11-09 09:34:26,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:34:26,220 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [146313022] [2021-11-09 09:34:26,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:26,221 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:34:26,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:34:26,222 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:34:26,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-09 09:34:26,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:26,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-09 09:34:26,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:34:26,729 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 09:34:26,742 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 09:34:27,603 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-09 09:34:27,604 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 27 treesize of output 29 [2021-11-09 09:34:27,615 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-09 09:34:27,616 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 26 treesize of output 22 [2021-11-09 09:34:27,652 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 09:34:27,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:34:32,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:32,965 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:34:32,965 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [146313022] [2021-11-09 09:34:32,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [146313022] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:32,965 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:32,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-09 09:34:32,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97239210] [2021-11-09 09:34:32,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 09:34:32,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:34:32,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 09:34:32,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-09 09:34:32,967 INFO L87 Difference]: Start difference. First operand 1139 states and 1376 transitions. Second operand has 6 states, 5 states have (on average 23.4) internal successors, (117), 6 states have internal predecessors, (117), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:34:51,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:34:51,136 INFO L93 Difference]: Finished difference Result 2090 states and 2635 transitions. [2021-11-09 09:34:51,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 09:34:51,139 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 23.4) internal successors, (117), 6 states have internal predecessors, (117), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 64 [2021-11-09 09:34:51,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:34:51,147 INFO L225 Difference]: With dead ends: 2090 [2021-11-09 09:34:51,147 INFO L226 Difference]: Without dead ends: 2090 [2021-11-09 09:34:51,147 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 123 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 09:34:51,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2090 states. [2021-11-09 09:34:51,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2090 to 1101. [2021-11-09 09:34:51,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1101 states, 733 states have (on average 1.8130968622100956) internal successors, (1329), 1093 states have internal predecessors, (1329), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-09 09:34:51,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1101 states to 1101 states and 1338 transitions. [2021-11-09 09:34:51,182 INFO L78 Accepts]: Start accepts. Automaton has 1101 states and 1338 transitions. Word has length 64 [2021-11-09 09:34:51,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:34:51,183 INFO L470 AbstractCegarLoop]: Abstraction has 1101 states and 1338 transitions. [2021-11-09 09:34:51,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 23.4) internal successors, (117), 6 states have internal predecessors, (117), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:34:51,183 INFO L276 IsEmpty]: Start isEmpty. Operand 1101 states and 1338 transitions. [2021-11-09 09:34:51,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-09 09:34:51,190 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:34:51,191 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] [2021-11-09 09:34:51,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-09 09:34:51,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:34:51,405 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr76REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 527 more)] === [2021-11-09 09:34:51,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:51,406 INFO L85 PathProgramCache]: Analyzing trace with hash -2063415711, now seen corresponding path program 1 times [2021-11-09 09:34:51,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:34:51,407 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [212888355] [2021-11-09 09:34:51,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:51,407 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:34:51,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:34:51,408 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:34:51,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-09 09:34:51,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:51,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-09 09:34:51,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:34:52,013 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 09:34:52,041 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 09:34:52,080 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 09:34:52,093 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 09:34:52,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:34:52,254 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 09:34:52,254 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:34:52,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [212888355] [2021-11-09 09:34:52,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [212888355] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:52,254 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:52,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-09 09:34:52,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946437138] [2021-11-09 09:34:52,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:34:52,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:34:52,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:34:52,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:34:52,256 INFO L87 Difference]: Start difference. First operand 1101 states and 1338 transitions. Second operand has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:34:55,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:34:55,427 INFO L93 Difference]: Finished difference Result 1100 states and 1337 transitions. [2021-11-09 09:34:55,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 09:34:55,427 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2021-11-09 09:34:55,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:34:55,431 INFO L225 Difference]: With dead ends: 1100 [2021-11-09 09:34:55,432 INFO L226 Difference]: Without dead ends: 1100 [2021-11-09 09:34:55,432 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 131 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 09:34:55,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1100 states. [2021-11-09 09:34:55,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1100 to 1100. [2021-11-09 09:34:55,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1100 states, 733 states have (on average 1.8117326057298773) internal successors, (1328), 1092 states have internal predecessors, (1328), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-09 09:34:55,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1100 states to 1100 states and 1337 transitions. [2021-11-09 09:34:55,452 INFO L78 Accepts]: Start accepts. Automaton has 1100 states and 1337 transitions. Word has length 69 [2021-11-09 09:34:55,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:34:55,453 INFO L470 AbstractCegarLoop]: Abstraction has 1100 states and 1337 transitions. [2021-11-09 09:34:55,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:34:55,453 INFO L276 IsEmpty]: Start isEmpty. Operand 1100 states and 1337 transitions. [2021-11-09 09:34:55,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-09 09:34:55,454 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:34:55,454 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] [2021-11-09 09:34:55,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-09 09:34:55,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:34:55,668 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr77REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 527 more)] === [2021-11-09 09:34:55,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:34:55,669 INFO L85 PathProgramCache]: Analyzing trace with hash -2063415710, now seen corresponding path program 1 times [2021-11-09 09:34:55,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:34:55,669 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1036780591] [2021-11-09 09:34:55,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:34:55,669 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:34:55,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:34:55,670 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:34:55,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-09 09:34:56,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:34:56,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-09 09:34:56,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:34:56,291 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 09:34:56,324 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 09:34:56,334 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 09:34:56,406 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 09:34:56,411 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 09:34:56,433 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 09:34:56,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:34:56,814 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 09:34:56,814 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:34:56,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1036780591] [2021-11-09 09:34:56,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1036780591] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:56,814 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:56,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-09 09:34:56,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673666896] [2021-11-09 09:34:56,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 09:34:56,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:34:56,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 09:34:56,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-09 09:34:56,816 INFO L87 Difference]: Start difference. First operand 1100 states and 1337 transitions. Second operand has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 8 states have internal predecessors, (73), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:35:06,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:35:06,731 INFO L93 Difference]: Finished difference Result 1099 states and 1336 transitions. [2021-11-09 09:35:06,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 09:35:06,732 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 8 states have internal predecessors, (73), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2021-11-09 09:35:06,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:35:06,736 INFO L225 Difference]: With dead ends: 1099 [2021-11-09 09:35:06,736 INFO L226 Difference]: Without dead ends: 1099 [2021-11-09 09:35:06,737 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 131 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 09:35:06,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1099 states. [2021-11-09 09:35:06,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1099 to 1099. [2021-11-09 09:35:06,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1099 states, 732 states have (on average 1.8128415300546448) internal successors, (1327), 1091 states have internal predecessors, (1327), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-09 09:35:06,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 1336 transitions. [2021-11-09 09:35:06,755 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 1336 transitions. Word has length 69 [2021-11-09 09:35:06,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:35:06,755 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 1336 transitions. [2021-11-09 09:35:06,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 8 states have internal predecessors, (73), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:35:06,756 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 1336 transitions. [2021-11-09 09:35:06,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-09 09:35:06,757 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:35:06,757 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:35:06,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-09 09:35:06,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:35:06,971 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 527 more)] === [2021-11-09 09:35:06,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:35:06,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1040597000, now seen corresponding path program 1 times [2021-11-09 09:35:06,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:35:06,972 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [410588050] [2021-11-09 09:35:06,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:35:06,972 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:35:06,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:35:06,973 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:35:06,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-09 09:35:07,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:07,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 09:35:07,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:35:07,689 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 09:35:07,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:35:07,885 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 09:35:07,886 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:35:07,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [410588050] [2021-11-09 09:35:07,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [410588050] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:35:07,886 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:35:07,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-09 09:35:07,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817684811] [2021-11-09 09:35:07,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 09:35:07,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:35:07,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 09:35:07,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-09 09:35:07,888 INFO L87 Difference]: Start difference. First operand 1099 states and 1336 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 09:35:07,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:35:07,993 INFO L93 Difference]: Finished difference Result 1109 states and 1349 transitions. [2021-11-09 09:35:07,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 09:35:07,994 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 77 [2021-11-09 09:35:07,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:35:08,002 INFO L225 Difference]: With dead ends: 1109 [2021-11-09 09:35:08,002 INFO L226 Difference]: Without dead ends: 1109 [2021-11-09 09:35:08,002 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-09 09:35:08,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2021-11-09 09:35:08,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 1109. [2021-11-09 09:35:08,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1109 states, 740 states have (on average 1.8094594594594595) internal successors, (1339), 1100 states have internal predecessors, (1339), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-09 09:35:08,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1109 states to 1109 states and 1349 transitions. [2021-11-09 09:35:08,028 INFO L78 Accepts]: Start accepts. Automaton has 1109 states and 1349 transitions. Word has length 77 [2021-11-09 09:35:08,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:35:08,028 INFO L470 AbstractCegarLoop]: Abstraction has 1109 states and 1349 transitions. [2021-11-09 09:35:08,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 09:35:08,029 INFO L276 IsEmpty]: Start isEmpty. Operand 1109 states and 1349 transitions. [2021-11-09 09:35:08,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-09 09:35:08,030 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:35:08,030 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:35:08,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-09 09:35:08,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:35:08,244 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 527 more)] === [2021-11-09 09:35:08,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:35:08,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1778063432, now seen corresponding path program 1 times [2021-11-09 09:35:08,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:35:08,245 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1094219629] [2021-11-09 09:35:08,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:35:08,245 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:35:08,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:35:08,246 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:35:08,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-09 09:35:08,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:08,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 09:35:08,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:35:09,076 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 09:35:09,076 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:35:09,416 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 09:35:09,417 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:35:09,417 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1094219629] [2021-11-09 09:35:09,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1094219629] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 09:35:09,417 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:35:09,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-11-09 09:35:09,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074475147] [2021-11-09 09:35:09,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-09 09:35:09,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:35:09,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-09 09:35:09,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-09 09:35:09,419 INFO L87 Difference]: Start difference. First operand 1109 states and 1349 transitions. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 09:35:09,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:35:09,930 INFO L93 Difference]: Finished difference Result 1123 states and 1367 transitions. [2021-11-09 09:35:09,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-09 09:35:09,930 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 79 [2021-11-09 09:35:09,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:35:09,936 INFO L225 Difference]: With dead ends: 1123 [2021-11-09 09:35:09,936 INFO L226 Difference]: Without dead ends: 1119 [2021-11-09 09:35:09,936 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=193, Unknown=0, NotChecked=0, Total=306 [2021-11-09 09:35:09,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1119 states. [2021-11-09 09:35:09,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1119 to 1115. [2021-11-09 09:35:09,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1115 states, 746 states have (on average 1.8056300268096515) internal successors, (1347), 1106 states have internal predecessors, (1347), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-09 09:35:09,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 1357 transitions. [2021-11-09 09:35:09,956 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 1357 transitions. Word has length 79 [2021-11-09 09:35:09,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:35:09,957 INFO L470 AbstractCegarLoop]: Abstraction has 1115 states and 1357 transitions. [2021-11-09 09:35:09,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 09:35:09,957 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 1357 transitions. [2021-11-09 09:35:09,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-09 09:35:09,958 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:35:09,958 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:35:09,973 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-11-09 09:35:10,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:35:10,174 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 527 more)] === [2021-11-09 09:35:10,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:35:10,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1701419208, now seen corresponding path program 2 times [2021-11-09 09:35:10,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:35:10,175 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1905185892] [2021-11-09 09:35:10,175 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 09:35:10,175 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:35:10,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:35:10,176 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:35:10,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-09 09:35:10,915 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 09:35:10,915 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:35:10,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-09 09:35:10,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:35:11,198 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 09:35:11,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:35:11,763 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 09:35:11,763 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:35:11,763 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1905185892] [2021-11-09 09:35:11,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1905185892] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 09:35:11,763 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:35:11,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-11-09 09:35:11,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284950250] [2021-11-09 09:35:11,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-09 09:35:11,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:35:11,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-09 09:35:11,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-11-09 09:35:11,765 INFO L87 Difference]: Start difference. First operand 1115 states and 1357 transitions. Second operand has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 09:35:13,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:35:13,346 INFO L93 Difference]: Finished difference Result 1143 states and 1395 transitions. [2021-11-09 09:35:13,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-09 09:35:13,347 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 83 [2021-11-09 09:35:13,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:35:13,353 INFO L225 Difference]: With dead ends: 1143 [2021-11-09 09:35:13,353 INFO L226 Difference]: Without dead ends: 1139 [2021-11-09 09:35:13,354 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=457, Invalid=949, Unknown=0, NotChecked=0, Total=1406 [2021-11-09 09:35:13,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2021-11-09 09:35:13,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1127. [2021-11-09 09:35:13,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 758 states have (on average 1.7981530343007917) internal successors, (1363), 1118 states have internal predecessors, (1363), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-09 09:35:13,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 1373 transitions. [2021-11-09 09:35:13,392 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 1373 transitions. Word has length 83 [2021-11-09 09:35:13,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:35:13,392 INFO L470 AbstractCegarLoop]: Abstraction has 1127 states and 1373 transitions. [2021-11-09 09:35:13,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 09:35:13,393 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 1373 transitions. [2021-11-09 09:35:13,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-09 09:35:13,394 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:35:13,394 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:35:13,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-09 09:35:13,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:35:13,613 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 527 more)] === [2021-11-09 09:35:13,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:35:13,614 INFO L85 PathProgramCache]: Analyzing trace with hash 331995592, now seen corresponding path program 3 times [2021-11-09 09:35:13,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:35:13,614 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1859019932] [2021-11-09 09:35:13,614 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 09:35:13,614 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:35:13,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:35:13,615 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:35:13,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-09 09:35:14,930 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-09 09:35:14,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:35:14,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-09 09:35:14,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:35:15,508 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 09:35:15,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:35:17,542 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 09:35:17,542 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:35:17,542 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1859019932] [2021-11-09 09:35:17,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1859019932] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 09:35:17,543 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:35:17,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2021-11-09 09:35:17,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217277963] [2021-11-09 09:35:17,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-09 09:35:17,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:35:17,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-09 09:35:17,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2021-11-09 09:35:17,546 INFO L87 Difference]: Start difference. First operand 1127 states and 1373 transitions. Second operand has 34 states, 34 states have (on average 3.0294117647058822) internal successors, (103), 34 states have internal predecessors, (103), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 09:35:26,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:35:26,795 INFO L93 Difference]: Finished difference Result 1183 states and 1457 transitions. [2021-11-09 09:35:26,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-09 09:35:26,796 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.0294117647058822) internal successors, (103), 34 states have internal predecessors, (103), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 91 [2021-11-09 09:35:26,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:35:26,802 INFO L225 Difference]: With dead ends: 1183 [2021-11-09 09:35:26,802 INFO L226 Difference]: Without dead ends: 1177 [2021-11-09 09:35:26,804 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=1377, Invalid=2783, Unknown=0, NotChecked=0, Total=4160 [2021-11-09 09:35:26,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1177 states. [2021-11-09 09:35:26,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1177 to 1151. [2021-11-09 09:35:26,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1151 states, 782 states have (on average 1.7826086956521738) internal successors, (1394), 1142 states have internal predecessors, (1394), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-09 09:35:26,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 1404 transitions. [2021-11-09 09:35:26,837 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 1404 transitions. Word has length 91 [2021-11-09 09:35:26,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:35:26,838 INFO L470 AbstractCegarLoop]: Abstraction has 1151 states and 1404 transitions. [2021-11-09 09:35:26,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.0294117647058822) internal successors, (103), 34 states have internal predecessors, (103), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 09:35:26,838 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 1404 transitions. [2021-11-09 09:35:26,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-09 09:35:26,839 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:35:26,839 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:35:26,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-09 09:35:27,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:35:27,054 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 527 more)] === [2021-11-09 09:35:27,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:35:27,054 INFO L85 PathProgramCache]: Analyzing trace with hash -770221112, now seen corresponding path program 4 times [2021-11-09 09:35:27,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:35:27,055 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [718830546] [2021-11-09 09:35:27,055 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-09 09:35:27,055 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:35:27,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:35:27,056 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:35:27,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-09 09:35:27,939 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-09 09:35:27,939 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:35:27,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-09 09:35:27,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:35:29,285 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 09:35:29,286 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:35:33,815 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 09:35:33,815 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:35:33,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [718830546] [2021-11-09 09:35:33,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [718830546] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 09:35:33,816 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:35:33,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 66 [2021-11-09 09:35:33,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594553393] [2021-11-09 09:35:33,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-09 09:35:33,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:35:33,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-09 09:35:33,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1000, Invalid=3290, Unknown=0, NotChecked=0, Total=4290 [2021-11-09 09:35:33,819 INFO L87 Difference]: Start difference. First operand 1151 states and 1404 transitions. Second operand has 66 states, 66 states have (on average 2.0454545454545454) internal successors, (135), 66 states have internal predecessors, (135), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 09:35:49,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:35:49,114 INFO L93 Difference]: Finished difference Result 1243 states and 1524 transitions. [2021-11-09 09:35:49,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-11-09 09:35:49,115 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.0454545454545454) internal successors, (135), 66 states have internal predecessors, (135), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 107 [2021-11-09 09:35:49,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:35:49,124 INFO L225 Difference]: With dead ends: 1243 [2021-11-09 09:35:49,124 INFO L226 Difference]: Without dead ends: 1239 [2021-11-09 09:35:49,130 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2313 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=4503, Invalid=14679, Unknown=0, NotChecked=0, Total=19182 [2021-11-09 09:35:49,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2021-11-09 09:35:49,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 1181. [2021-11-09 09:35:49,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1181 states, 812 states have (on average 1.7733990147783252) internal successors, (1440), 1172 states have internal predecessors, (1440), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-09 09:35:49,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1181 states to 1181 states and 1450 transitions. [2021-11-09 09:35:49,177 INFO L78 Accepts]: Start accepts. Automaton has 1181 states and 1450 transitions. Word has length 107 [2021-11-09 09:35:49,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:35:49,178 INFO L470 AbstractCegarLoop]: Abstraction has 1181 states and 1450 transitions. [2021-11-09 09:35:49,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 2.0454545454545454) internal successors, (135), 66 states have internal predecessors, (135), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 09:35:49,178 INFO L276 IsEmpty]: Start isEmpty. Operand 1181 states and 1450 transitions. [2021-11-09 09:35:49,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-09 09:35:49,180 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:35:49,180 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:35:49,200 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-09 09:35:49,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:35:49,395 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 527 more)] === [2021-11-09 09:35:49,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:35:49,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1054827912, now seen corresponding path program 5 times [2021-11-09 09:35:49,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:35:49,397 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1492945474] [2021-11-09 09:35:49,397 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-09 09:35:49,397 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:35:49,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:35:49,398 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:35:49,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b680e690-5468-462e-9dd9-2969f93ddda0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-09 09:35:51,117 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2021-11-09 09:35:51,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:35:51,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-09 09:35:51,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:35:51,176 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 09:35:51,490 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-09 09:35:51,490 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 23 treesize of output 30 [2021-11-09 09:35:51,536 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 09:35:51,727 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 40 treesize of output 28