./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU --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 1447114af8a4b489e3ec713f117f7a92d9cc93e5175903910b61bfe512c41aed --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 23:07:45,970 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 23:07:45,974 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 23:07:46,029 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 23:07:46,030 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 23:07:46,032 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 23:07:46,034 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 23:07:46,038 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 23:07:46,041 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 23:07:46,042 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 23:07:46,044 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 23:07:46,046 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 23:07:46,046 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 23:07:46,048 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 23:07:46,050 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 23:07:46,052 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 23:07:46,053 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 23:07:46,055 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 23:07:46,058 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 23:07:46,061 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 23:07:46,064 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 23:07:46,066 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 23:07:46,068 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 23:07:46,069 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 23:07:46,074 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 23:07:46,076 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 23:07:46,077 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 23:07:46,078 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 23:07:46,079 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 23:07:46,080 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 23:07:46,080 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 23:07:46,082 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 23:07:46,083 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 23:07:46,084 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 23:07:46,085 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 23:07:46,086 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 23:07:46,091 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 23:07:46,092 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 23:07:46,093 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 23:07:46,095 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 23:07:46,095 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 23:07:46,097 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-02 23:07:46,141 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 23:07:46,141 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 23:07:46,142 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 23:07:46,142 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 23:07:46,143 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 23:07:46,143 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 23:07:46,143 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 23:07:46,144 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 23:07:46,144 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 23:07:46,144 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-02 23:07:46,144 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 23:07:46,145 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 23:07:46,145 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 23:07:46,145 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-02 23:07:46,145 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-02 23:07:46,145 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-02 23:07:46,146 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 23:07:46,146 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-02 23:07:46,146 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 23:07:46,146 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 23:07:46,147 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 23:07:46,147 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 23:07:46,147 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 23:07:46,147 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 23:07:46,147 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 23:07:46,148 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 23:07:46,148 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 23:07:46,148 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 23:07:46,148 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 23:07:46,149 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_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1447114af8a4b489e3ec713f117f7a92d9cc93e5175903910b61bfe512c41aed [2021-11-02 23:07:46,440 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 23:07:46,463 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 23:07:46,466 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 23:07:46,467 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 23:07:46,468 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 23:07:46,469 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-2.i [2021-11-02 23:07:46,576 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/data/0f64ce487/c87242fa6fab41c7af7205d659fcc31a/FLAG9bb705791 [2021-11-02 23:07:47,357 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 23:07:47,358 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-2.i [2021-11-02 23:07:47,388 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/data/0f64ce487/c87242fa6fab41c7af7205d659fcc31a/FLAG9bb705791 [2021-11-02 23:07:47,572 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/data/0f64ce487/c87242fa6fab41c7af7205d659fcc31a [2021-11-02 23:07:47,576 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 23:07:47,577 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-02 23:07:47,581 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 23:07:47,581 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 23:07:47,586 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 23:07:47,587 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:07:47" (1/1) ... [2021-11-02 23:07:47,589 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@689cd6f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:07:47, skipping insertion in model container [2021-11-02 23:07:47,589 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:07:47" (1/1) ... [2021-11-02 23:07:47,598 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 23:07:47,680 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 23:07:48,120 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_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-2.i[33021,33034] [2021-11-02 23:07:48,257 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 23:07:48,274 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) [2021-11-02 23:07:48,279 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@65654309 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:07:48, skipping insertion in model container [2021-11-02 23:07:48,280 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 23:07:48,281 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-11-02 23:07:48,284 INFO L168 Benchmark]: Toolchain (without parser) took 704.38 ms. Allocated memory is still 117.4 MB. Free memory was 82.7 MB in the beginning and 84.2 MB in the end (delta: -1.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-02 23:07:48,286 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 81.8 MB. Free memory is still 39.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 23:07:48,288 INFO L168 Benchmark]: CACSL2BoogieTranslator took 699.97 ms. Allocated memory is still 117.4 MB. Free memory was 82.5 MB in the beginning and 84.2 MB in the end (delta: -1.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-02 23:07:48,291 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 81.8 MB. Free memory is still 39.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 699.97 ms. Allocated memory is still 117.4 MB. Free memory was 82.5 MB in the beginning and 84.2 MB in the end (delta: -1.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 751]: 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_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU --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 1447114af8a4b489e3ec713f117f7a92d9cc93e5175903910b61bfe512c41aed --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 23:07:50,995 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 23:07:50,998 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 23:07:51,056 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 23:07:51,057 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 23:07:51,062 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 23:07:51,065 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 23:07:51,077 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 23:07:51,081 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 23:07:51,091 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 23:07:51,092 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 23:07:51,094 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 23:07:51,096 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 23:07:51,099 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 23:07:51,101 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 23:07:51,107 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 23:07:51,109 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 23:07:51,111 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 23:07:51,113 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 23:07:51,123 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 23:07:51,126 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 23:07:51,128 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 23:07:51,131 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 23:07:51,133 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 23:07:51,145 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 23:07:51,145 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 23:07:51,146 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 23:07:51,148 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 23:07:51,149 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 23:07:51,151 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 23:07:51,152 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 23:07:51,153 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 23:07:51,156 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 23:07:51,157 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 23:07:51,159 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 23:07:51,160 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 23:07:51,161 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 23:07:51,161 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 23:07:51,162 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 23:07:51,164 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 23:07:51,165 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 23:07:51,172 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-02 23:07:51,227 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 23:07:51,227 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 23:07:51,228 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 23:07:51,228 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 23:07:51,230 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 23:07:51,230 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 23:07:51,230 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 23:07:51,231 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 23:07:51,231 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 23:07:51,231 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-02 23:07:51,231 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 23:07:51,232 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 23:07:51,232 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 23:07:51,232 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-02 23:07:51,232 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-02 23:07:51,233 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-02 23:07:51,233 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 23:07:51,233 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-02 23:07:51,233 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-02 23:07:51,233 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-02 23:07:51,234 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 23:07:51,234 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 23:07:51,234 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 23:07:51,235 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 23:07:51,235 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 23:07:51,235 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 23:07:51,236 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 23:07:51,236 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 23:07:51,236 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-02 23:07:51,236 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-02 23:07:51,237 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 23:07:51,237 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-02 23:07:51,237 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_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1447114af8a4b489e3ec713f117f7a92d9cc93e5175903910b61bfe512c41aed [2021-11-02 23:07:51,670 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 23:07:51,701 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 23:07:51,704 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 23:07:51,706 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 23:07:51,707 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 23:07:51,708 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-2.i [2021-11-02 23:07:51,801 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/data/a9260050e/0fe6dd5380424d2ca8dd9c1920f7a9b2/FLAG6ffdcff0b [2021-11-02 23:07:52,630 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 23:07:52,631 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-2.i [2021-11-02 23:07:52,650 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/data/a9260050e/0fe6dd5380424d2ca8dd9c1920f7a9b2/FLAG6ffdcff0b [2021-11-02 23:07:52,818 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/data/a9260050e/0fe6dd5380424d2ca8dd9c1920f7a9b2 [2021-11-02 23:07:52,821 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 23:07:52,823 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-02 23:07:52,825 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 23:07:52,825 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 23:07:52,848 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 23:07:52,849 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:07:52" (1/1) ... [2021-11-02 23:07:52,850 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24ae37d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:07:52, skipping insertion in model container [2021-11-02 23:07:52,851 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:07:52" (1/1) ... [2021-11-02 23:07:52,859 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 23:07:52,943 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 23:07:53,407 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_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-2.i[33021,33034] [2021-11-02 23:07:53,588 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 23:07:53,614 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-02 23:07:53,640 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 23:07:53,682 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_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-2.i[33021,33034] [2021-11-02 23:07:53,758 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 23:07:53,787 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 23:07:53,827 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_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-2.i[33021,33034] [2021-11-02 23:07:53,887 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 23:07:53,945 INFO L208 MainTranslator]: Completed translation [2021-11-02 23:07:53,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:07:53 WrapperNode [2021-11-02 23:07:53,946 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 23:07:53,947 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 23:07:53,948 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 23:07:53,948 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 23:07:53,963 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:07:53" (1/1) ... [2021-11-02 23:07:53,963 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:07:53" (1/1) ... [2021-11-02 23:07:54,004 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:07:53" (1/1) ... [2021-11-02 23:07:54,005 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:07:53" (1/1) ... [2021-11-02 23:07:54,134 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:07:53" (1/1) ... [2021-11-02 23:07:54,148 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:07:53" (1/1) ... [2021-11-02 23:07:54,177 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:07:53" (1/1) ... [2021-11-02 23:07:54,194 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 23:07:54,195 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 23:07:54,195 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 23:07:54,195 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 23:07:54,202 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:07:53" (1/1) ... [2021-11-02 23:07:54,211 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 23:07:54,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:07:54,248 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 23:07:54,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 23:07:54,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-02 23:07:54,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 23:07:54,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-11-02 23:07:54,313 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-02 23:07:54,313 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-02 23:07:54,313 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-02 23:07:54,313 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-02 23:07:54,314 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-02 23:07:54,314 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-02 23:07:54,314 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-02 23:07:54,314 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2021-11-02 23:07:54,315 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-02 23:07:54,315 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-02 23:07:54,315 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-11-02 23:07:54,315 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-11-02 23:07:54,315 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-11-02 23:07:54,316 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-11-02 23:07:54,316 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-02 23:07:54,316 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-11-02 23:07:54,316 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-11-02 23:07:54,316 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-02 23:07:54,317 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-11-02 23:07:54,317 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-11-02 23:07:54,317 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-11-02 23:07:54,317 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-02 23:07:54,317 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-11-02 23:07:54,318 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-11-02 23:07:54,318 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-11-02 23:07:54,318 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-11-02 23:07:54,318 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-11-02 23:07:54,318 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-11-02 23:07:54,319 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-11-02 23:07:54,319 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-02 23:07:54,319 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-11-02 23:07:54,319 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-11-02 23:07:54,319 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-11-02 23:07:54,320 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-11-02 23:07:54,321 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-11-02 23:07:54,322 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-11-02 23:07:54,322 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-11-02 23:07:54,323 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-11-02 23:07:54,323 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-11-02 23:07:54,323 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-11-02 23:07:54,323 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-11-02 23:07:54,324 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-11-02 23:07:54,324 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-11-02 23:07:54,324 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-11-02 23:07:54,325 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-11-02 23:07:54,325 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-11-02 23:07:54,325 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-11-02 23:07:54,325 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-11-02 23:07:54,325 INFO L130 BoogieDeclarations]: Found specification of procedure ffsl [2021-11-02 23:07:54,326 INFO L130 BoogieDeclarations]: Found specification of procedure ffsll [2021-11-02 23:07:54,326 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-11-02 23:07:54,326 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-11-02 23:07:54,327 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp_l [2021-11-02 23:07:54,327 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp_l [2021-11-02 23:07:54,327 INFO L130 BoogieDeclarations]: Found specification of procedure explicit_bzero [2021-11-02 23:07:54,327 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-11-02 23:07:54,329 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-11-02 23:07:54,329 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-11-02 23:07:54,330 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-11-02 23:07:54,330 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-11-02 23:07:54,330 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-11-02 23:07:54,331 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-02 23:07:54,331 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-02 23:07:54,331 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-02 23:07:54,331 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-02 23:07:54,331 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-02 23:07:54,331 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-02 23:07:54,332 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-02 23:07:54,332 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-02 23:07:54,332 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-02 23:07:54,332 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-02 23:07:54,332 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-02 23:07:54,334 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-02 23:07:54,334 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-02 23:07:54,334 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-02 23:07:54,335 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-02 23:07:54,335 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-02 23:07:54,335 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-02 23:07:54,335 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-02 23:07:54,335 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-02 23:07:54,335 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-02 23:07:54,336 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-02 23:07:54,336 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-02 23:07:54,336 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-02 23:07:54,336 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-02 23:07:54,336 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-02 23:07:54,337 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-02 23:07:54,337 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-02 23:07:54,337 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-02 23:07:54,337 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-02 23:07:54,337 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-02 23:07:54,337 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-02 23:07:54,338 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-02 23:07:54,339 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-02 23:07:54,339 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-02 23:07:54,339 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-02 23:07:54,339 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-02 23:07:54,339 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-02 23:07:54,339 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-02 23:07:54,340 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-02 23:07:54,340 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-02 23:07:54,340 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-02 23:07:54,340 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-02 23:07:54,340 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-02 23:07:54,340 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-02 23:07:54,341 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-02 23:07:54,341 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-02 23:07:54,341 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-02 23:07:54,341 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-02 23:07:54,341 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-02 23:07:54,342 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-02 23:07:54,342 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-02 23:07:54,342 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-02 23:07:54,343 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-02 23:07:54,343 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-02 23:07:54,343 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-02 23:07:54,344 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-02 23:07:54,344 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-02 23:07:54,347 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-02 23:07:54,348 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-02 23:07:54,348 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-02 23:07:54,349 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-02 23:07:54,350 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-02 23:07:54,351 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-02 23:07:54,351 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-02 23:07:54,351 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-02 23:07:54,352 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-02 23:07:54,357 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-02 23:07:54,357 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-02 23:07:54,358 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-02 23:07:54,358 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-02 23:07:54,358 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-02 23:07:54,358 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-02 23:07:54,358 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-02 23:07:54,358 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-02 23:07:54,359 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-02 23:07:54,359 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-02 23:07:54,359 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-02 23:07:54,359 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-02 23:07:54,359 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-02 23:07:54,359 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-02 23:07:54,360 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-02 23:07:54,360 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-02 23:07:54,360 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-02 23:07:54,360 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-02 23:07:54,360 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-02 23:07:54,361 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-02 23:07:54,361 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-02 23:07:54,361 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-02 23:07:54,361 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-02 23:07:54,361 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-02 23:07:54,361 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-02 23:07:54,362 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-02 23:07:54,362 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-02 23:07:54,362 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-02 23:07:54,362 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-02 23:07:54,362 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-02 23:07:54,362 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-02 23:07:54,363 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-02 23:07:54,363 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-02 23:07:54,363 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-02 23:07:54,363 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-02 23:07:54,363 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-02 23:07:54,364 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-02 23:07:54,364 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-02 23:07:54,364 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-02 23:07:54,364 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-02 23:07:54,364 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-02 23:07:54,364 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-02 23:07:54,365 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-02 23:07:54,365 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-02 23:07:54,365 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-02 23:07:54,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 23:07:54,365 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-02 23:07:54,365 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2021-11-02 23:07:54,366 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-02 23:07:54,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 23:07:54,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-02 23:07:54,366 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-02 23:07:54,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 23:07:54,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 23:07:54,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-02 23:07:54,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 23:07:54,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-02 23:07:54,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-02 23:07:54,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-02 23:07:54,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 23:07:54,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-11-02 23:07:54,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-02 23:07:55,125 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-02 23:07:59,624 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 23:07:59,624 INFO L299 CfgBuilder]: Removed 40 assume(true) statements. [2021-11-02 23:07:59,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:07:59 BoogieIcfgContainer [2021-11-02 23:07:59,629 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 23:07:59,635 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 23:07:59,635 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 23:07:59,639 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 23:07:59,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 11:07:52" (1/3) ... [2021-11-02 23:07:59,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59e1a8fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:07:59, skipping insertion in model container [2021-11-02 23:07:59,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:07:53" (2/3) ... [2021-11-02 23:07:59,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59e1a8fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:07:59, skipping insertion in model container [2021-11-02 23:07:59,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:07:59" (3/3) ... [2021-11-02 23:07:59,645 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test1-2.i [2021-11-02 23:07:59,653 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 23:07:59,653 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 435 error locations. [2021-11-02 23:07:59,719 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 23:07:59,729 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 [2021-11-02 23:07:59,729 INFO L340 AbstractCegarLoop]: Starting to check reachability of 435 error locations. [2021-11-02 23:07:59,789 INFO L276 IsEmpty]: Start isEmpty. Operand has 875 states, 421 states have (on average 2.2470308788598574) internal successors, (946), 863 states have internal predecessors, (946), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-02 23:07:59,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-02 23:07:59,798 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:07:59,799 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:07:59,800 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 431 more)] === [2021-11-02 23:07:59,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:07:59,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1825169583, now seen corresponding path program 1 times [2021-11-02 23:07:59,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 23:07:59,822 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1900979823] [2021-11-02 23:07:59,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:07:59,823 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 23:07:59,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 23:07:59,827 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 23:07:59,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-02 23:08:00,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:08:00,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-02 23:08:00,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:08:00,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:08:00,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 23:08:00,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:08:00,295 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 23:08:00,296 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1900979823] [2021-11-02 23:08:00,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1900979823] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 23:08:00,297 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:08:00,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-02 23:08:00,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960519433] [2021-11-02 23:08:00,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 23:08:00,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 23:08:00,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 23:08:00,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 23:08:00,327 INFO L87 Difference]: Start difference. First operand has 875 states, 421 states have (on average 2.2470308788598574) internal successors, (946), 863 states have internal predecessors, (946), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 23:08:00,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:08:00,415 INFO L93 Difference]: Finished difference Result 866 states and 924 transitions. [2021-11-02 23:08:00,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 23:08:00,417 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-11-02 23:08:00,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:08:00,480 INFO L225 Difference]: With dead ends: 866 [2021-11-02 23:08:00,485 INFO L226 Difference]: Without dead ends: 863 [2021-11-02 23:08:00,487 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 23:08:00,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2021-11-02 23:08:00,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 863. [2021-11-02 23:08:00,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 863 states, 416 states have (on average 2.139423076923077) internal successors, (890), 852 states have internal predecessors, (890), 16 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-02 23:08:00,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 921 transitions. [2021-11-02 23:08:00,638 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 921 transitions. Word has length 9 [2021-11-02 23:08:00,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:08:00,639 INFO L470 AbstractCegarLoop]: Abstraction has 863 states and 921 transitions. [2021-11-02 23:08:00,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 23:08:00,643 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 921 transitions. [2021-11-02 23:08:00,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-02 23:08:00,644 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:08:00,645 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:08:00,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-02 23:08:00,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 23:08:00,860 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 431 more)] === [2021-11-02 23:08:00,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:08:00,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1825169645, now seen corresponding path program 1 times [2021-11-02 23:08:00,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 23:08:00,862 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1380803473] [2021-11-02 23:08:00,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:08:00,863 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 23:08:00,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 23:08:00,864 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 23:08:00,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-02 23:08:01,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:08:01,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-02 23:08:01,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:08:01,205 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 [2021-11-02 23:08:01,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:08:01,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 23:08:01,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:08:01,288 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 23:08:01,289 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1380803473] [2021-11-02 23:08:01,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1380803473] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 23:08:01,291 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:08:01,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-02 23:08:01,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275432397] [2021-11-02 23:08:01,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 23:08:01,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 23:08:01,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 23:08:01,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:08:01,297 INFO L87 Difference]: Start difference. First operand 863 states and 921 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 23:08:03,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:08:03,460 INFO L93 Difference]: Finished difference Result 821 states and 880 transitions. [2021-11-02 23:08:03,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 23:08:03,460 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-11-02 23:08:03,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:08:03,466 INFO L225 Difference]: With dead ends: 821 [2021-11-02 23:08:03,466 INFO L226 Difference]: Without dead ends: 821 [2021-11-02 23:08:03,467 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:08:03,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2021-11-02 23:08:03,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 814. [2021-11-02 23:08:03,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 814 states, 416 states have (on average 2.0216346153846154) internal successors, (841), 803 states have internal predecessors, (841), 16 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-02 23:08:03,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 872 transitions. [2021-11-02 23:08:03,501 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 872 transitions. Word has length 9 [2021-11-02 23:08:03,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:08:03,502 INFO L470 AbstractCegarLoop]: Abstraction has 814 states and 872 transitions. [2021-11-02 23:08:03,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 23:08:03,503 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 872 transitions. [2021-11-02 23:08:03,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-02 23:08:03,503 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:08:03,504 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:08:03,522 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-02 23:08:03,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 23:08:03,722 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr1REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 431 more)] === [2021-11-02 23:08:03,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:08:03,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1825169646, now seen corresponding path program 1 times [2021-11-02 23:08:03,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 23:08:03,724 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1071026254] [2021-11-02 23:08:03,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:08:03,724 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 23:08:03,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 23:08:03,726 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 23:08:03,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-02 23:08:03,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:08:03,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 23:08:03,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:08:04,040 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 [2021-11-02 23:08:04,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:08:04,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 23:08:04,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:08:04,198 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 23:08:04,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1071026254] [2021-11-02 23:08:04,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1071026254] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 23:08:04,199 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:08:04,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-02 23:08:04,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136529846] [2021-11-02 23:08:04,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 23:08:04,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 23:08:04,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 23:08:04,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 23:08:04,209 INFO L87 Difference]: Start difference. First operand 814 states and 872 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 23:08:08,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:08:08,435 INFO L93 Difference]: Finished difference Result 887 states and 949 transitions. [2021-11-02 23:08:08,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 23:08:08,436 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-11-02 23:08:08,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:08:08,442 INFO L225 Difference]: With dead ends: 887 [2021-11-02 23:08:08,442 INFO L226 Difference]: Without dead ends: 887 [2021-11-02 23:08:08,443 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 23:08:08,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2021-11-02 23:08:08,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 836. [2021-11-02 23:08:08,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 836 states, 448 states have (on average 2.002232142857143) internal successors, (897), 825 states have internal predecessors, (897), 16 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-02 23:08:08,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 928 transitions. [2021-11-02 23:08:08,487 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 928 transitions. Word has length 9 [2021-11-02 23:08:08,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:08:08,487 INFO L470 AbstractCegarLoop]: Abstraction has 836 states and 928 transitions. [2021-11-02 23:08:08,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 23:08:08,488 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 928 transitions. [2021-11-02 23:08:08,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-02 23:08:08,488 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:08:08,488 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:08:08,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-02 23:08:08,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 23:08:08,689 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr322REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 431 more)] === [2021-11-02 23:08:08,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:08:08,690 INFO L85 PathProgramCache]: Analyzing trace with hash 746504661, now seen corresponding path program 1 times [2021-11-02 23:08:08,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 23:08:08,690 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [739931431] [2021-11-02 23:08:08,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:08:08,691 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 23:08:08,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 23:08:08,692 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 23:08:08,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-02 23:08:08,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:08:08,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-02 23:08:08,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:08:08,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:08:08,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 23:08:08,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:08:08,992 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 23:08:08,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [739931431] [2021-11-02 23:08:08,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [739931431] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 23:08:08,993 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:08:08,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-02 23:08:08,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752640137] [2021-11-02 23:08:08,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 23:08:08,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 23:08:08,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 23:08:08,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 23:08:08,995 INFO L87 Difference]: Start difference. First operand 836 states and 928 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 23:08:09,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:08:09,138 INFO L93 Difference]: Finished difference Result 1418 states and 1571 transitions. [2021-11-02 23:08:09,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 23:08:09,139 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-11-02 23:08:09,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:08:09,150 INFO L225 Difference]: With dead ends: 1418 [2021-11-02 23:08:09,150 INFO L226 Difference]: Without dead ends: 1418 [2021-11-02 23:08:09,150 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 23:08:09,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1418 states. [2021-11-02 23:08:09,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1418 to 1158. [2021-11-02 23:08:09,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1158 states, 770 states have (on average 1.9922077922077923) internal successors, (1534), 1144 states have internal predecessors, (1534), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 9 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-02 23:08:09,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1158 states to 1158 states and 1571 transitions. [2021-11-02 23:08:09,200 INFO L78 Accepts]: Start accepts. Automaton has 1158 states and 1571 transitions. Word has length 10 [2021-11-02 23:08:09,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:08:09,200 INFO L470 AbstractCegarLoop]: Abstraction has 1158 states and 1571 transitions. [2021-11-02 23:08:09,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 23:08:09,201 INFO L276 IsEmpty]: Start isEmpty. Operand 1158 states and 1571 transitions. [2021-11-02 23:08:09,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-02 23:08:09,201 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:08:09,202 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:08:09,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-02 23:08:09,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 23:08:09,415 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr4REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 431 more)] === [2021-11-02 23:08:09,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:08:09,416 INFO L85 PathProgramCache]: Analyzing trace with hash 500174839, now seen corresponding path program 1 times [2021-11-02 23:08:09,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 23:08:09,416 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [139229954] [2021-11-02 23:08:09,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:08:09,417 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 23:08:09,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 23:08:09,417 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 23:08:09,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-02 23:08:09,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:08:09,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-02 23:08:09,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:08:09,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:08:09,642 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 23:08:09,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:08:09,695 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 23:08:09,696 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [139229954] [2021-11-02 23:08:09,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [139229954] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 23:08:09,696 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:08:09,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-02 23:08:09,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110226182] [2021-11-02 23:08:09,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 23:08:09,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 23:08:09,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 23:08:09,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 23:08:09,698 INFO L87 Difference]: Start difference. First operand 1158 states and 1571 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 23:08:09,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:08:09,754 INFO L93 Difference]: Finished difference Result 1098 states and 1485 transitions. [2021-11-02 23:08:09,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 23:08:09,755 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-11-02 23:08:09,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:08:09,766 INFO L225 Difference]: With dead ends: 1098 [2021-11-02 23:08:09,766 INFO L226 Difference]: Without dead ends: 1098 [2021-11-02 23:08:09,766 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 23:08:09,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1098 states. [2021-11-02 23:08:09,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1098 to 1098. [2021-11-02 23:08:09,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1098 states, 734 states have (on average 1.9727520435967303) internal successors, (1448), 1084 states have internal predecessors, (1448), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 9 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-02 23:08:09,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1098 states to 1098 states and 1485 transitions. [2021-11-02 23:08:09,820 INFO L78 Accepts]: Start accepts. Automaton has 1098 states and 1485 transitions. Word has length 15 [2021-11-02 23:08:09,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:08:09,820 INFO L470 AbstractCegarLoop]: Abstraction has 1098 states and 1485 transitions. [2021-11-02 23:08:09,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 23:08:09,821 INFO L276 IsEmpty]: Start isEmpty. Operand 1098 states and 1485 transitions. [2021-11-02 23:08:09,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-02 23:08:09,822 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:08:09,822 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:08:09,835 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-02 23:08:10,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 23:08:10,037 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr28REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 431 more)] === [2021-11-02 23:08:10,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:08:10,037 INFO L85 PathProgramCache]: Analyzing trace with hash -368317551, now seen corresponding path program 1 times [2021-11-02 23:08:10,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 23:08:10,038 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1687423371] [2021-11-02 23:08:10,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:08:10,038 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 23:08:10,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 23:08:10,040 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 23:08:10,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-02 23:08:10,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:08:10,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 23:08:10,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:08:10,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:08:10,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 23:08:10,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:08:10,412 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 23:08:10,412 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1687423371] [2021-11-02 23:08:10,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1687423371] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 23:08:10,412 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:08:10,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-02 23:08:10,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158779824] [2021-11-02 23:08:10,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 23:08:10,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 23:08:10,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 23:08:10,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 23:08:10,414 INFO L87 Difference]: Start difference. First operand 1098 states and 1485 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 23:08:10,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:08:10,534 INFO L93 Difference]: Finished difference Result 1070 states and 1429 transitions. [2021-11-02 23:08:10,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 23:08:10,536 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-11-02 23:08:10,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:08:10,544 INFO L225 Difference]: With dead ends: 1070 [2021-11-02 23:08:10,545 INFO L226 Difference]: Without dead ends: 1070 [2021-11-02 23:08:10,545 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-02 23:08:10,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1070 states. [2021-11-02 23:08:10,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1070 to 1068. [2021-11-02 23:08:10,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1068 states, 718 states have (on average 1.935933147632312) internal successors, (1390), 1054 states have internal predecessors, (1390), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 9 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-02 23:08:10,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1427 transitions. [2021-11-02 23:08:10,581 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1427 transitions. Word has length 17 [2021-11-02 23:08:10,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:08:10,582 INFO L470 AbstractCegarLoop]: Abstraction has 1068 states and 1427 transitions. [2021-11-02 23:08:10,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 23:08:10,582 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1427 transitions. [2021-11-02 23:08:10,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-02 23:08:10,583 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:08:10,584 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:08:10,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-02 23:08:10,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 23:08:10,802 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr42REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 431 more)] === [2021-11-02 23:08:10,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:08:10,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1057027393, now seen corresponding path program 1 times [2021-11-02 23:08:10,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 23:08:10,804 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1624354200] [2021-11-02 23:08:10,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:08:10,804 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 23:08:10,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 23:08:10,805 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 23:08:10,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-02 23:08:11,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:08:11,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 23:08:11,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:08:11,093 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 [2021-11-02 23:08:11,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:08:11,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 23:08:11,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:08:11,351 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 23:08:11,351 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1624354200] [2021-11-02 23:08:11,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1624354200] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 23:08:11,352 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:08:11,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-02 23:08:11,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505853551] [2021-11-02 23:08:11,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 23:08:11,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 23:08:11,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 23:08:11,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 23:08:11,353 INFO L87 Difference]: Start difference. First operand 1068 states and 1427 transitions. Second operand has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 23:08:13,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:08:13,766 INFO L93 Difference]: Finished difference Result 1280 states and 1647 transitions. [2021-11-02 23:08:13,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 23:08:13,767 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2021-11-02 23:08:13,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:08:13,776 INFO L225 Difference]: With dead ends: 1280 [2021-11-02 23:08:13,776 INFO L226 Difference]: Without dead ends: 1280 [2021-11-02 23:08:13,777 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 23:08:13,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1280 states. [2021-11-02 23:08:13,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1280 to 1064. [2021-11-02 23:08:13,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1064 states, 718 states have (on average 1.924791086350975) internal successors, (1382), 1050 states have internal predecessors, (1382), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 9 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-02 23:08:13,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1064 states to 1064 states and 1419 transitions. [2021-11-02 23:08:13,815 INFO L78 Accepts]: Start accepts. Automaton has 1064 states and 1419 transitions. Word has length 31 [2021-11-02 23:08:13,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:08:13,816 INFO L470 AbstractCegarLoop]: Abstraction has 1064 states and 1419 transitions. [2021-11-02 23:08:13,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 23:08:13,816 INFO L276 IsEmpty]: Start isEmpty. Operand 1064 states and 1419 transitions. [2021-11-02 23:08:13,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-02 23:08:13,817 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:08:13,818 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:08:13,830 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-11-02 23:08:14,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 23:08:14,032 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr43REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 431 more)] === [2021-11-02 23:08:14,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:08:14,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1057027392, now seen corresponding path program 1 times [2021-11-02 23:08:14,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 23:08:14,033 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1587423845] [2021-11-02 23:08:14,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:08:14,033 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 23:08:14,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 23:08:14,034 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 23:08:14,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-02 23:08:14,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:08:14,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-02 23:08:14,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:08:14,294 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 [2021-11-02 23:08:14,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:08:14,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 23:08:15,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:08:15,165 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 23:08:15,166 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1587423845] [2021-11-02 23:08:15,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1587423845] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 23:08:15,166 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:08:15,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-02 23:08:15,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547014528] [2021-11-02 23:08:15,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 23:08:15,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 23:08:15,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 23:08:15,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-02 23:08:15,168 INFO L87 Difference]: Start difference. First operand 1064 states and 1419 transitions. Second operand has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 23:08:21,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:08:21,760 INFO L93 Difference]: Finished difference Result 1343 states and 1682 transitions. [2021-11-02 23:08:21,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 23:08:21,761 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2021-11-02 23:08:21,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:08:21,770 INFO L225 Difference]: With dead ends: 1343 [2021-11-02 23:08:21,771 INFO L226 Difference]: Without dead ends: 1343 [2021-11-02 23:08:21,771 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-02 23:08:21,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1343 states. [2021-11-02 23:08:21,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1343 to 1060. [2021-11-02 23:08:21,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1060 states, 718 states have (on average 1.9136490250696379) internal successors, (1374), 1046 states have internal predecessors, (1374), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 9 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-02 23:08:21,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1060 states to 1060 states and 1411 transitions. [2021-11-02 23:08:21,810 INFO L78 Accepts]: Start accepts. Automaton has 1060 states and 1411 transitions. Word has length 31 [2021-11-02 23:08:21,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:08:21,811 INFO L470 AbstractCegarLoop]: Abstraction has 1060 states and 1411 transitions. [2021-11-02 23:08:21,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 23:08:21,811 INFO L276 IsEmpty]: Start isEmpty. Operand 1060 states and 1411 transitions. [2021-11-02 23:08:21,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-02 23:08:21,813 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:08:21,813 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:08:21,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-02 23:08:22,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 23:08:22,027 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr107REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 431 more)] === [2021-11-02 23:08:22,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:08:22,027 INFO L85 PathProgramCache]: Analyzing trace with hash -3085405, now seen corresponding path program 1 times [2021-11-02 23:08:22,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 23:08:22,027 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1436036357] [2021-11-02 23:08:22,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:08:22,028 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 23:08:22,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 23:08:22,029 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 23:08:22,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-02 23:08:22,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:08:22,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 23:08:22,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:08:22,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:08:22,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 23:08:22,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:08:22,604 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 23:08:22,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1436036357] [2021-11-02 23:08:22,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1436036357] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 23:08:22,604 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:08:22,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-02 23:08:22,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934499390] [2021-11-02 23:08:22,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 23:08:22,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 23:08:22,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 23:08:22,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 23:08:22,606 INFO L87 Difference]: Start difference. First operand 1060 states and 1411 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 23:08:22,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:08:22,687 INFO L93 Difference]: Finished difference Result 1048 states and 1391 transitions. [2021-11-02 23:08:22,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 23:08:22,688 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 46 [2021-11-02 23:08:22,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:08:22,697 INFO L225 Difference]: With dead ends: 1048 [2021-11-02 23:08:22,697 INFO L226 Difference]: Without dead ends: 1048 [2021-11-02 23:08:22,698 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 23:08:22,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2021-11-02 23:08:22,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 1048. [2021-11-02 23:08:22,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1048 states, 706 states have (on average 1.9178470254957507) internal successors, (1354), 1034 states have internal predecessors, (1354), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 9 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-02 23:08:22,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1048 states to 1048 states and 1391 transitions. [2021-11-02 23:08:22,730 INFO L78 Accepts]: Start accepts. Automaton has 1048 states and 1391 transitions. Word has length 46 [2021-11-02 23:08:22,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:08:22,732 INFO L470 AbstractCegarLoop]: Abstraction has 1048 states and 1391 transitions. [2021-11-02 23:08:22,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 23:08:22,732 INFO L276 IsEmpty]: Start isEmpty. Operand 1048 states and 1391 transitions. [2021-11-02 23:08:22,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-02 23:08:22,740 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:08:22,741 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:08:22,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-02 23:08:22,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 23:08:22,954 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr107REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 431 more)] === [2021-11-02 23:08:22,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:08:22,955 INFO L85 PathProgramCache]: Analyzing trace with hash 851935191, now seen corresponding path program 1 times [2021-11-02 23:08:22,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 23:08:22,956 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1659180874] [2021-11-02 23:08:22,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:08:22,956 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 23:08:22,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 23:08:22,957 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 23:08:23,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-02 23:08:23,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:08:23,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 23:08:23,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:08:23,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:08:23,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 23:08:24,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:08:24,250 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 23:08:24,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1659180874] [2021-11-02 23:08:24,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1659180874] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 23:08:24,251 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:08:24,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-02 23:08:24,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828221482] [2021-11-02 23:08:24,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 23:08:24,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 23:08:24,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 23:08:24,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:08:24,252 INFO L87 Difference]: Start difference. First operand 1048 states and 1391 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 23:08:24,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:08:24,462 INFO L93 Difference]: Finished difference Result 1193 states and 1490 transitions. [2021-11-02 23:08:24,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 23:08:24,463 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2021-11-02 23:08:24,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:08:24,469 INFO L225 Difference]: With dead ends: 1193 [2021-11-02 23:08:24,469 INFO L226 Difference]: Without dead ends: 1193 [2021-11-02 23:08:24,470 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:08:24,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1193 states. [2021-11-02 23:08:24,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1193 to 998. [2021-11-02 23:08:24,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 998 states, 656 states have (on average 1.9039634146341464) internal successors, (1249), 984 states have internal predecessors, (1249), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 9 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-02 23:08:24,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 998 states to 998 states and 1286 transitions. [2021-11-02 23:08:24,496 INFO L78 Accepts]: Start accepts. Automaton has 998 states and 1286 transitions. Word has length 54 [2021-11-02 23:08:24,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:08:24,497 INFO L470 AbstractCegarLoop]: Abstraction has 998 states and 1286 transitions. [2021-11-02 23:08:24,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 23:08:24,497 INFO L276 IsEmpty]: Start isEmpty. Operand 998 states and 1286 transitions. [2021-11-02 23:08:24,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-02 23:08:24,498 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:08:24,498 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:08:24,526 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-02 23:08:24,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 23:08:24,711 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr61REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 431 more)] === [2021-11-02 23:08:24,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:08:24,712 INFO L85 PathProgramCache]: Analyzing trace with hash 932147498, now seen corresponding path program 1 times [2021-11-02 23:08:24,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 23:08:24,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1501001411] [2021-11-02 23:08:24,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:08:24,713 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 23:08:24,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 23:08:24,714 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 23:08:24,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-02 23:08:25,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:08:25,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-02 23:08:25,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:08:25,387 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 [2021-11-02 23:08:25,398 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 [2021-11-02 23:08:26,249 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-02 23:08:26,249 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 27 [2021-11-02 23:08:26,260 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-02 23:08:26,261 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 20 [2021-11-02 23:08:26,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:08:26,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 23:08:33,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:08:33,559 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 23:08:33,560 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1501001411] [2021-11-02 23:08:33,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1501001411] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 23:08:33,560 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:08:33,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-02 23:08:33,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921460349] [2021-11-02 23:08:33,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 23:08:33,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 23:08:33,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 23:08:33,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=15, Unknown=2, NotChecked=0, Total=30 [2021-11-02 23:08:33,562 INFO L87 Difference]: Start difference. First operand 998 states and 1286 transitions. Second operand has 6 states, 5 states have (on average 21.0) internal successors, (105), 6 states have internal predecessors, (105), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 23:08:45,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:08:45,035 INFO L93 Difference]: Finished difference Result 973 states and 1224 transitions. [2021-11-02 23:08:45,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 23:08:45,036 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 21.0) internal successors, (105), 6 states have internal predecessors, (105), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2021-11-02 23:08:45,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:08:45,043 INFO L225 Difference]: With dead ends: 973 [2021-11-02 23:08:45,043 INFO L226 Difference]: Without dead ends: 973 [2021-11-02 23:08:45,043 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=26, Invalid=27, Unknown=3, NotChecked=0, Total=56 [2021-11-02 23:08:45,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2021-11-02 23:08:45,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 928. [2021-11-02 23:08:45,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 928 states, 624 states have (on average 1.7740384615384615) internal successors, (1107), 914 states have internal predecessors, (1107), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 9 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-02 23:08:45,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 928 states to 928 states and 1144 transitions. [2021-11-02 23:08:45,072 INFO L78 Accepts]: Start accepts. Automaton has 928 states and 1144 transitions. Word has length 57 [2021-11-02 23:08:45,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:08:45,073 INFO L470 AbstractCegarLoop]: Abstraction has 928 states and 1144 transitions. [2021-11-02 23:08:45,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 21.0) internal successors, (105), 6 states have internal predecessors, (105), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 23:08:45,073 INFO L276 IsEmpty]: Start isEmpty. Operand 928 states and 1144 transitions. [2021-11-02 23:08:45,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-02 23:08:45,074 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:08:45,075 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:08:45,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-02 23:08:45,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 23:08:45,292 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr66REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 431 more)] === [2021-11-02 23:08:45,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:08:45,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1475291946, now seen corresponding path program 1 times [2021-11-02 23:08:45,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 23:08:45,294 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1920656790] [2021-11-02 23:08:45,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:08:45,294 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 23:08:45,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 23:08:45,297 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 23:08:45,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-02 23:08:45,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:08:45,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-02 23:08:45,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:08:46,004 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-02 23:08:46,025 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 [2021-11-02 23:08:46,071 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 [2021-11-02 23:08:46,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:08:46,087 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 23:08:46,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:08:46,268 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 23:08:46,268 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1920656790] [2021-11-02 23:08:46,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1920656790] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 23:08:46,269 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:08:46,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-02 23:08:46,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895073353] [2021-11-02 23:08:46,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 23:08:46,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 23:08:46,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 23:08:46,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 23:08:46,271 INFO L87 Difference]: Start difference. First operand 928 states and 1144 transitions. Second operand has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 23:08:49,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:08:49,442 INFO L93 Difference]: Finished difference Result 927 states and 1142 transitions. [2021-11-02 23:08:49,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 23:08:49,443 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 62 [2021-11-02 23:08:49,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:08:49,447 INFO L225 Difference]: With dead ends: 927 [2021-11-02 23:08:49,447 INFO L226 Difference]: Without dead ends: 927 [2021-11-02 23:08:49,448 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 117 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-02 23:08:49,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2021-11-02 23:08:49,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 927. [2021-11-02 23:08:49,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 927 states, 624 states have (on average 1.7708333333333333) internal successors, (1105), 913 states have internal predecessors, (1105), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 9 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-02 23:08:49,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 927 states to 927 states and 1142 transitions. [2021-11-02 23:08:49,474 INFO L78 Accepts]: Start accepts. Automaton has 927 states and 1142 transitions. Word has length 62 [2021-11-02 23:08:49,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:08:49,475 INFO L470 AbstractCegarLoop]: Abstraction has 927 states and 1142 transitions. [2021-11-02 23:08:49,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 23:08:49,476 INFO L276 IsEmpty]: Start isEmpty. Operand 927 states and 1142 transitions. [2021-11-02 23:08:49,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-02 23:08:49,476 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:08:49,477 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:08:49,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-02 23:08:49,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 23:08:49,694 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr67REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 431 more)] === [2021-11-02 23:08:49,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:08:49,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1475291947, now seen corresponding path program 1 times [2021-11-02 23:08:49,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 23:08:49,696 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [711040900] [2021-11-02 23:08:49,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:08:49,696 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 23:08:49,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 23:08:49,697 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 23:08:49,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-02 23:08:50,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:08:50,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-02 23:08:50,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:08:50,551 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 [2021-11-02 23:08:50,592 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 [2021-11-02 23:08:50,613 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 [2021-11-02 23:08:50,694 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 [2021-11-02 23:08:50,701 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 [2021-11-02 23:08:50,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:08:50,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 23:08:51,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:08:51,129 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 23:08:51,129 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [711040900] [2021-11-02 23:08:51,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [711040900] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 23:08:51,129 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:08:51,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-02 23:08:51,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299156232] [2021-11-02 23:08:51,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 23:08:51,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 23:08:51,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 23:08:51,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-02 23:08:51,131 INFO L87 Difference]: Start difference. First operand 927 states and 1142 transitions. Second operand has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 23:08:59,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:08:59,807 INFO L93 Difference]: Finished difference Result 926 states and 1140 transitions. [2021-11-02 23:08:59,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 23:08:59,808 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 62 [2021-11-02 23:08:59,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:08:59,813 INFO L225 Difference]: With dead ends: 926 [2021-11-02 23:08:59,813 INFO L226 Difference]: Without dead ends: 926 [2021-11-02 23:08:59,814 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-02 23:08:59,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2021-11-02 23:08:59,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 926. [2021-11-02 23:08:59,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 926 states, 622 states have (on average 1.7733118971061093) internal successors, (1103), 912 states have internal predecessors, (1103), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 9 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-02 23:08:59,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1140 transitions. [2021-11-02 23:08:59,838 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1140 transitions. Word has length 62 [2021-11-02 23:08:59,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:08:59,838 INFO L470 AbstractCegarLoop]: Abstraction has 926 states and 1140 transitions. [2021-11-02 23:08:59,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 23:08:59,839 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1140 transitions. [2021-11-02 23:08:59,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-02 23:08:59,840 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:08:59,840 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:08:59,857 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-02 23:09:00,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 23:09:00,054 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 431 more)] === [2021-11-02 23:09:00,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:09:00,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1969893937, now seen corresponding path program 1 times [2021-11-02 23:09:00,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 23:09:00,056 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1893358860] [2021-11-02 23:09:00,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:09:00,056 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 23:09:00,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 23:09:00,058 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 23:09:00,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-02 23:09:00,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:09:00,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 23:09:00,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:09:00,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:09:00,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 23:09:01,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:09:01,236 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 23:09:01,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1893358860] [2021-11-02 23:09:01,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1893358860] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 23:09:01,237 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:09:01,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-02 23:09:01,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346329193] [2021-11-02 23:09:01,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 23:09:01,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 23:09:01,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 23:09:01,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-02 23:09:01,239 INFO L87 Difference]: Start difference. First operand 926 states and 1140 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-02 23:09:01,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:09:01,398 INFO L93 Difference]: Finished difference Result 936 states and 1154 transitions. [2021-11-02 23:09:01,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 23:09:01,400 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 70 [2021-11-02 23:09:01,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:09:01,408 INFO L225 Difference]: With dead ends: 936 [2021-11-02 23:09:01,408 INFO L226 Difference]: Without dead ends: 936 [2021-11-02 23:09:01,408 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-02 23:09:01,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 936 states. [2021-11-02 23:09:01,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 936 to 936. [2021-11-02 23:09:01,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 936 states, 630 states have (on average 1.7698412698412698) internal successors, (1115), 921 states have internal predecessors, (1115), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (20), 9 states have call predecessors, (20), 18 states have call successors, (20) [2021-11-02 23:09:01,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 936 states to 936 states and 1154 transitions. [2021-11-02 23:09:01,436 INFO L78 Accepts]: Start accepts. Automaton has 936 states and 1154 transitions. Word has length 70 [2021-11-02 23:09:01,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:09:01,436 INFO L470 AbstractCegarLoop]: Abstraction has 936 states and 1154 transitions. [2021-11-02 23:09:01,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-02 23:09:01,437 INFO L276 IsEmpty]: Start isEmpty. Operand 936 states and 1154 transitions. [2021-11-02 23:09:01,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-02 23:09:01,438 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:09:01,438 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:09:01,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-02 23:09:01,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 23:09:01,655 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 431 more)] === [2021-11-02 23:09:01,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:09:01,655 INFO L85 PathProgramCache]: Analyzing trace with hash -350118799, now seen corresponding path program 1 times [2021-11-02 23:09:01,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 23:09:01,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2112589938] [2021-11-02 23:09:01,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:09:01,657 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 23:09:01,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 23:09:01,672 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 23:09:01,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-02 23:09:02,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:09:02,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-02 23:09:02,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:09:02,708 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:09:02,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 23:09:03,019 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:09:03,019 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 23:09:03,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2112589938] [2021-11-02 23:09:03,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2112589938] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 23:09:03,020 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:09:03,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-11-02 23:09:03,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541919910] [2021-11-02 23:09:03,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 23:09:03,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 23:09:03,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 23:09:03,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-02 23:09:03,022 INFO L87 Difference]: Start difference. First operand 936 states and 1154 transitions. Second operand has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-02 23:09:03,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:09:03,548 INFO L93 Difference]: Finished difference Result 950 states and 1174 transitions. [2021-11-02 23:09:03,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-02 23:09:03,549 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 72 [2021-11-02 23:09:03,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:09:03,554 INFO L225 Difference]: With dead ends: 950 [2021-11-02 23:09:03,555 INFO L226 Difference]: Without dead ends: 946 [2021-11-02 23:09:03,555 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=193, Unknown=0, NotChecked=0, Total=306 [2021-11-02 23:09:03,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states. [2021-11-02 23:09:03,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 942. [2021-11-02 23:09:03,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 942 states, 636 states have (on average 1.7657232704402517) internal successors, (1123), 927 states have internal predecessors, (1123), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (20), 9 states have call predecessors, (20), 18 states have call successors, (20) [2021-11-02 23:09:03,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 1162 transitions. [2021-11-02 23:09:03,583 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 1162 transitions. Word has length 72 [2021-11-02 23:09:03,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:09:03,584 INFO L470 AbstractCegarLoop]: Abstraction has 942 states and 1162 transitions. [2021-11-02 23:09:03,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-02 23:09:03,590 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 1162 transitions. [2021-11-02 23:09:03,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-02 23:09:03,591 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:09:03,592 INFO L513 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:09:03,609 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-02 23:09:03,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 23:09:03,806 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 431 more)] === [2021-11-02 23:09:03,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:09:03,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1814020337, now seen corresponding path program 2 times [2021-11-02 23:09:03,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 23:09:03,808 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [972260516] [2021-11-02 23:09:03,808 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 23:09:03,808 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 23:09:03,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 23:09:03,810 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 23:09:03,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-02 23:09:04,758 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 23:09:04,758 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:09:04,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-02 23:09:04,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:09:05,079 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:09:05,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 23:09:05,817 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:09:05,817 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 23:09:05,817 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [972260516] [2021-11-02 23:09:05,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [972260516] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 23:09:05,818 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:09:05,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-11-02 23:09:05,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917050602] [2021-11-02 23:09:05,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-02 23:09:05,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 23:09:05,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-02 23:09:05,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-11-02 23:09:05,819 INFO L87 Difference]: Start difference. First operand 942 states and 1162 transitions. Second operand has 18 states, 18 states have (on average 4.444444444444445) internal successors, (80), 18 states have internal predecessors, (80), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-02 23:09:07,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:09:07,599 INFO L93 Difference]: Finished difference Result 970 states and 1206 transitions. [2021-11-02 23:09:07,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-02 23:09:07,601 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.444444444444445) internal successors, (80), 18 states have internal predecessors, (80), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 76 [2021-11-02 23:09:07,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:09:07,608 INFO L225 Difference]: With dead ends: 970 [2021-11-02 23:09:07,608 INFO L226 Difference]: Without dead ends: 966 [2021-11-02 23:09:07,609 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=457, Invalid=949, Unknown=0, NotChecked=0, Total=1406 [2021-11-02 23:09:07,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2021-11-02 23:09:07,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 954. [2021-11-02 23:09:07,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 954 states, 648 states have (on average 1.757716049382716) internal successors, (1139), 939 states have internal predecessors, (1139), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (20), 9 states have call predecessors, (20), 18 states have call successors, (20) [2021-11-02 23:09:07,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 954 states to 954 states and 1178 transitions. [2021-11-02 23:09:07,636 INFO L78 Accepts]: Start accepts. Automaton has 954 states and 1178 transitions. Word has length 76 [2021-11-02 23:09:07,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:09:07,636 INFO L470 AbstractCegarLoop]: Abstraction has 954 states and 1178 transitions. [2021-11-02 23:09:07,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.444444444444445) internal successors, (80), 18 states have internal predecessors, (80), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-02 23:09:07,637 INFO L276 IsEmpty]: Start isEmpty. Operand 954 states and 1178 transitions. [2021-11-02 23:09:07,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-02 23:09:07,637 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:09:07,638 INFO L513 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:09:07,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-02 23:09:07,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 23:09:07,857 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 431 more)] === [2021-11-02 23:09:07,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:09:07,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1521923599, now seen corresponding path program 3 times [2021-11-02 23:09:07,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 23:09:07,859 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1133382293] [2021-11-02 23:09:07,859 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 23:09:07,859 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 23:09:07,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 23:09:07,860 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 23:09:07,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-02 23:09:09,142 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-02 23:09:09,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:09:09,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-02 23:09:09,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:09:09,782 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:09:09,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 23:09:11,628 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:09:11,629 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 23:09:11,629 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1133382293] [2021-11-02 23:09:11,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1133382293] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 23:09:11,629 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:09:11,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2021-11-02 23:09:11,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116407555] [2021-11-02 23:09:11,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-02 23:09:11,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 23:09:11,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-02 23:09:11,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2021-11-02 23:09:11,633 INFO L87 Difference]: Start difference. First operand 954 states and 1178 transitions. Second operand has 34 states, 34 states have (on average 2.823529411764706) internal successors, (96), 34 states have internal predecessors, (96), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-02 23:09:20,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:09:20,331 INFO L93 Difference]: Finished difference Result 1010 states and 1270 transitions. [2021-11-02 23:09:20,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-11-02 23:09:20,333 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.823529411764706) internal successors, (96), 34 states have internal predecessors, (96), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 84 [2021-11-02 23:09:20,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:09:20,339 INFO L225 Difference]: With dead ends: 1010 [2021-11-02 23:09:20,339 INFO L226 Difference]: Without dead ends: 1006 [2021-11-02 23:09:20,342 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 596 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=1817, Invalid=4189, Unknown=0, NotChecked=0, Total=6006 [2021-11-02 23:09:20,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2021-11-02 23:09:20,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 978. [2021-11-02 23:09:20,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 978 states, 672 states have (on average 1.7425595238095237) internal successors, (1171), 963 states have internal predecessors, (1171), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (20), 9 states have call predecessors, (20), 18 states have call successors, (20) [2021-11-02 23:09:20,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1210 transitions. [2021-11-02 23:09:20,404 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1210 transitions. Word has length 84 [2021-11-02 23:09:20,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:09:20,405 INFO L470 AbstractCegarLoop]: Abstraction has 978 states and 1210 transitions. [2021-11-02 23:09:20,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.823529411764706) internal successors, (96), 34 states have internal predecessors, (96), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-02 23:09:20,405 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1210 transitions. [2021-11-02 23:09:20,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-02 23:09:20,406 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:09:20,407 INFO L513 BasicCegarLoop]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:09:20,434 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-02 23:09:20,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 23:09:20,626 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 431 more)] === [2021-11-02 23:09:20,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:09:20,627 INFO L85 PathProgramCache]: Analyzing trace with hash -204383247, now seen corresponding path program 4 times [2021-11-02 23:09:20,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 23:09:20,628 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1959151141] [2021-11-02 23:09:20,628 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 23:09:20,628 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 23:09:20,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 23:09:20,630 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 23:09:20,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-02 23:09:21,392 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 23:09:21,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:09:21,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-02 23:09:21,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:09:22,855 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:09:22,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 23:09:28,237 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:09:28,238 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 23:09:28,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1959151141] [2021-11-02 23:09:28,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1959151141] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 23:09:28,238 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:09:28,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 66 [2021-11-02 23:09:28,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786386683] [2021-11-02 23:09:28,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-02 23:09:28,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 23:09:28,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-02 23:09:28,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1000, Invalid=3290, Unknown=0, NotChecked=0, Total=4290 [2021-11-02 23:09:28,243 INFO L87 Difference]: Start difference. First operand 978 states and 1210 transitions. Second operand has 66 states, 66 states have (on average 1.9393939393939394) internal successors, (128), 66 states have internal predecessors, (128), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-02 23:09:46,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:09:46,421 INFO L93 Difference]: Finished difference Result 1072 states and 1362 transitions. [2021-11-02 23:09:46,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2021-11-02 23:09:46,423 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 1.9393939393939394) internal successors, (128), 66 states have internal predecessors, (128), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 100 [2021-11-02 23:09:46,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:09:46,431 INFO L225 Difference]: With dead ends: 1072 [2021-11-02 23:09:46,431 INFO L226 Difference]: Without dead ends: 1068 [2021-11-02 23:09:46,439 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2373 ImplicationChecksByTransitivity, 13.9s TimeCoverageRelationStatistics Valid=4552, Invalid=14908, Unknown=0, NotChecked=0, Total=19460 [2021-11-02 23:09:46,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2021-11-02 23:09:46,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 1008. [2021-11-02 23:09:46,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1008 states, 702 states have (on average 1.7336182336182335) internal successors, (1217), 993 states have internal predecessors, (1217), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (20), 9 states have call predecessors, (20), 18 states have call successors, (20) [2021-11-02 23:09:46,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1008 states to 1008 states and 1256 transitions. [2021-11-02 23:09:46,471 INFO L78 Accepts]: Start accepts. Automaton has 1008 states and 1256 transitions. Word has length 100 [2021-11-02 23:09:46,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:09:46,471 INFO L470 AbstractCegarLoop]: Abstraction has 1008 states and 1256 transitions. [2021-11-02 23:09:46,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 1.9393939393939394) internal successors, (128), 66 states have internal predecessors, (128), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-02 23:09:46,472 INFO L276 IsEmpty]: Start isEmpty. Operand 1008 states and 1256 transitions. [2021-11-02 23:09:46,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-02 23:09:46,473 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:09:46,473 INFO L513 BasicCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:09:46,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-02 23:09:46,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 23:09:46,693 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 431 more)] === [2021-11-02 23:09:46,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:09:46,694 INFO L85 PathProgramCache]: Analyzing trace with hash -335256655, now seen corresponding path program 5 times [2021-11-02 23:09:46,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 23:09:46,695 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [820127236] [2021-11-02 23:09:46,695 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 23:09:46,695 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 23:09:46,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 23:09:46,697 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 23:09:46,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0eaaa09-06ec-4f90-97d2-3c0d3f94ce7c/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-02 23:09:48,523 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2021-11-02 23:09:48,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:09:48,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-02 23:09:48,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:09:48,599 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-02 23:09:48,929 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-02 23:09:48,930 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 [2021-11-02 23:09:49,002 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 [2021-11-02 23:09:49,294 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 45 treesize of output 33